Journal articles on the topic 'Impact on Wetlands'
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1
Xu, Ting, Baisha Weng, Denghua Yan, Kun Wang, Xiangnan Li, Wuxia Bi, Meng Li, Xiangjun Cheng, and Yinxue Liu. "Wetlands of International Importance: Status, Threats, and Future Protection." International Journal of Environmental Research and Public Health 16, no. 10 (May 22, 2019): 1818. http://dx.doi.org/10.3390/ijerph16101818.
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The 2303 Wetlands of International Importance distribute unevenly in different continents. Europe owns the largest number of sites, while Africa has the largest area of sites. More than half of the sites are affected by three or four impact factors (55%). The most significant impact factors are pollution (54%), biological resources use (53%), natural system modification (53%), and agriculture and aquaculture (42%). The main affected objects are land area and environment of the wetlands, occurred in 75% and 69% of the sites, respectively. The types most affected by land area occupation are river wetlands and lake wetlands, the types with the greatest impact on environment are marine/coastal wetlands and river wetlands, the type with the greatest impact on biodiversity is river wetlands, the types most affected by water resources regulation are marsh wetlands and river wetlands, and the types most affected by climate change are lake wetlands and marine/coastal wetlands. About one-third of the wetland sites have been artificially reconstructed. However, it is found that the proportions of natural wetland sites not affected or affected by only one factor are generally higher than that of wetland sites both containing natural wetlands and human-made wetlands, while the proportions of wetland sites both containing natural wetlands and human-made wetlands affected by three or four factors are generally higher than that of natural wetland sites. Wetland sites in the UK and Ireland are least affected among all countries. Wetland management plans in different regions still have large space for improvement, especially in Africa and Asia. The protection and restoration of global wetlands can be carried out in five aspects, including management and policy, monitoring, restoration, knowledge, and funding.
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Zuo, Jin, and Qin Yan. "Recycling Inter-Feed Relationship between Wetlands’ Protective Using and Eco-Town Construction." Advanced Materials Research 361-363 (October 2011): 1085–90. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.1085.
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As the wetlands has decreased and degenerated badly due to human’s excessive use, it becomes to be a hotspot in international academe’s forefield to resume and rebuild wetlands. Simply opposing protection to using can effectively ease up the stress of wetland’s degradation in a short term, but is disadvantageous to wetland’s sustainable development. This article takes Tianjin Qilihai wetland as example, aiming at its existing problems, sums up two kinds of infection genes – exterior representation and interior motivation, and intensively analyzes the sticking point from three aspects – economic, acknowledgement and mechanism. It suggests that basing on the idea of accretion and co-prosperity, we can divide wetland area into three zone – core zone, buffer zone and experimental zone, and then let the interior dispersive inhabitants and production activities move out to the intensively constructed eco-town. Thus we can make scientific use of wetland’s economical value and promote circumjacent industries’ transformation. Moreover, by the recycling use of water on a model of source separation combined with wetland classification, the quantity of regenerated water would reach 18.25 million cubic meters. By the Low Impact Development (LID) strategies in the control and use of rainfall and flood, the quantity of rainwater for use would reach 8.62 million cubic meters per year. In this way, the wetlands’ ecological conservation would obtain regurgitation-feeding, the construction of eco-town would be organically combined with protection and using of wetlands, and an effective system of wetlands’ sustainable development and using would be established.
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Rode, Sanjay Jayawant. "An Impact of Rapid Urbanization on Wetlands Destruction in Mumbai Metropolitan Region." International Journal of Sustainable Economies Management 9, no. 4 (October 2020): 1–27. http://dx.doi.org/10.4018/ijsem.2020100101.
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Wetlands are playing an important role in sustaining human health and wellbeing. They support food production, water treatment and water supply, flood control, fishing, recreation, and wildlife habitat. But wetland areas are shrinking very fast all over the world due to the rapid growth of urbanisation. In devepoing countries, the destruction of the wetlands is widely observed. In India, the wetlands area, size, and number are declinging very fast due to population growth and urbanisation. Mumbai Metropolitan Region is not an exception to this phenomenon. The wetland area is significantly declining in all suburbs of region over the period of time. State government should come out with future plans, legislation, and co-ordination among various bodies and NGOs to protect wetlands in region. The protection and scientific conservation of wetlands will improve wetlands-related services and health of the people in the region.
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Imdad, Kashif, and Agha Mansoor Khan. "Impact of Global Warming on Wetlands: A Case Study of Lucknow District." SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 9, no. 01 (June 25, 2017): 25–29. http://dx.doi.org/10.18090/samriddhi.v9i01.8334.
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Wetlands are one of most productive environments and provide a wide variety of benefits. They are important repositories of biodiversity and play a critical role in the health, livelihood and economic prospects for the nearby rural population. Wetlands are under imminent threat by nature in form of global warming and by civilization in form of encroachments and reclamation of wetlands for farming and settlement. Along Indo-Gangetic plain wetlands have receded more than half of its size in last 50 years. Present paper attempts to analyse impact of climate change on wetlands of Lucknow. Methodology included analysis of temporal mapping of wetlands using Survey of India topographical maps (SOI) and satellite data, climatic data of area and ground verification for encroachment impacts. Results indicate that wetland of Lucknow are receding with exponential rate attributing to Global Warming, encroachment by human for settlement and agricultural activities.
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Pinder, Kieran C., M. Catherine Eimers, and Shaun A. Watmough. "Impact of wetland disturbance on phosphorus loadings to lakes." Canadian Journal of Fisheries and Aquatic Sciences 71, no. 11 (November 2014): 1695–703. http://dx.doi.org/10.1139/cjfas-2014-0143.
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Total phosphorus (TP) concentrations have declined in many lakes and streams across south-central Ontario, Canada, over the past three decades, and changes have been most pronounced in wetland-dominated catchments. In this study, long-term (1980–2007) patterns in TP concentrations in streams were assessed at four wetland-dominated catchments that drain into Dickie Lake (DE) in south-central Ontario. Two of the subcatchments (DE5 and DE6) have particularly large wetland components (31%–34% of catchment area), and these wetlands are characterized by numerous standing dead trees and many young live trees (18–27 years old). These two streams exhibited large peaks in TP and potassium (K) export in the early 1980s. In contrast, TP and K export from DE8 and DE10 (wetland cover 19%–20%) were relatively flat over the entire record (1980–2007), and field surveys indicated negligible standing dead biomass in these wetlands and a relatively healthy, mixed-age tree community. The coincidence of high TP and K concentrations in the DE5 and DE6 streams as well as evidence of a disturbance event in their wetlands during the early 1980s suggest that disturbance events (e.g., flooding) that lead to wetland tree mortality may contribute to patterns in surface water TP observed in this region.
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Im, Ran-Young, Taekyu Kim, Chung-Yeol Baek, Chang-Su Lee, Song-Hyun Kim, Jung-Hwan Lee, Ji Yoon Kim, and Gea-Jae Joo. "The influence of surrounding land cover on wetland habitat conditions: a case study of inland wetlands in South Korea." PeerJ 8 (May 18, 2020): e9101. http://dx.doi.org/10.7717/peerj.9101.
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Wetland ecosystems have been globally degraded and lost due to rapid urbanization and climate change. An assessment of national scale inventory, including wetland types and conditions, is urgently required to understand the big picture of endangered wetlands, such as where they are and how they look like. We analyzed the spatial patterns of each inland wetland type (brackish wetland was included) in South Korea and the relative importance of land cover categories on wetland conditions. The wetlands were grouped into four dominant types (riverine, lake, mountain, and human-made) according to their topography. Riverine wetlands constituted the largest area (71.3%). The relative ratio of wetlands in a well-conserved condition (i.e., “A” rank) was highest in riverine wetlands (23.8%), followed by mountain wetlands (22.1%). The higher proportion of grasslands was related to a better condition ranking, but the increasing bareland area had a negative impact on wetland conditions. We also found that wetlands located near wetland protected areas tend to be in a better condition compared to remote sites. Our results further support the importance of the condition of surrounding areas for wetland conservation.
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Yousaf, Anum, Noreen Khalid, Muhammad Aqeel, Ali Noman, Nayab Naeem, Wajiha Sarfraz, Ujala Ejaz, Zonaira Qaiser, and Arifa Khalid. "Nitrogen Dynamics in Wetland Systems and Its Impact on Biodiversity." Nitrogen 2, no. 2 (May 1, 2021): 196–217. http://dx.doi.org/10.3390/nitrogen2020013.
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Wetlands are viable sinks for nitrate and have also been identified as a source of nitrous oxide, a product of two microbially regulated processes: nitrification and denitrification. Anthropogenic expansion of nitrogen is a leading cause of the eutrophication of water bodies and may also contribute to the deterioration of the ozone layer in the stratosphere. Wetlands ameliorate the quality of water percolating through them, by retaining nutrients and sequestering carbon, and simultaneously enhancing the flora and fauna diversity of these landscapes. Among the many services these wetlands provide, they also alleviate nitrate pollution by attenuating reactive nitrogen from agricultural drainage and ensure the effective reclamation of the wastewater. The literature regarding the viability of wetlands suggests a linear relationship between the removal of nitrogen and its loading rate, thereby suggesting a potential loss of nitrogen removal capacity due to the loss of wetland area. This review discusses the nitrogen removal mechanisms in existing wetlands along with the environmental variables affecting the optimum performance and management of these wetlands, in terms of greenhouse gas retention and biodiversity. Conservation of these wetlands should be contemplated to maintain the world-wide nitrogen cycle and diminish the negative repercussions of surplus nitrogen loading.
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Reed, Denise J. "Hydrology of temperate wetlands." Progress in Physical Geography: Earth and Environment 17, no. 1 (March 1993): 20–31. http://dx.doi.org/10.1177/030913339301700102.
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The importance of wetlands as habitats for a variety of fauna and as areas with specialized vegetation, as well as their economic importance in many areas, is now widely recognized. Hydrology is important to the function of wetland systems and fundamental to the definition and delimitation of wetland areas. The ability of various vegetation species to withstand various degrees of flooding or flooded soils is a main characteristic of all wetlands, and recent studies have indicated that such adaptations result in a zonation of species within wetlands. However, competition between species may be more important in determining zonation in tidal marshes. The impact of human alterations to natural hydrology on wetland function can be severe and pristine wetlands remain in only a few areas.
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Prochaska, Abigail, Annette Watson, Timothy Callahan, and Kendra Stewart. "Lowcountry Landowners’ Wetlands Knowledge and Perceptions and the Impacts of Land Management Actions on Isolated Wetlands." Journal of South Carolina Water Resources 8, no. 2 (2021): 15–28. http://dx.doi.org/10.34068/jscwr/08.02.05.
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The South Carolina Lowcountry has an abundance of geographically isolated wetlands (GIWs), which provide important water cycling functions and biogeochemical processing services, and which are habitat for rare and threatened plants and animals. Isolated wetlands are not well protected in a regulatory or legal sense in the United States, including South Carolina, leaving them vulnerable to land use change pressures from rapid growth and in-migration. This project investigated how private landowners in rural areas near Charleston, South Carolina, perceive wetlands and their general knowledge about wetlands using semistructured interviews and site visits. Landowners’ observed and self-reported management and use activities were documented and analyzed for impacts to isolated wetland hydrology and amphibian habitat quality. Most landowners had positive perceptions of wetlands, were somewhat knowledgeable about wetland functions, and were conducting land use activities that could possibly affect the hydrology and negatively impact the habitat quality of the isolated wetlands on their property. Many landowners exhibited a disconnect between the perceived impacts of their management and use activities and the impacts observed in this study. While these private landowners do not seem to be threatening the hydrology of GIWs in this area, the impacts to habitat quality are still concerning. Landowner education programming is recommended, which would link common management activities to impacts on isolated wetlands. Furthermore, policy and land use zoning changes would encourage the protection of isolated wetlands in this region.
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Chen, Chen, Jiajun Feng, Changyou Wang, Longjiang Mao, and Yuanzhi Zhang. "Satellite-Based Monitoring of Coastal Wetlands in Yancheng, Jiangsu Province, China." Journal of Marine Science and Engineering 10, no. 6 (June 17, 2022): 829. http://dx.doi.org/10.3390/jmse10060829.
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The dynamic process of the wetland can reflect its impact on the environment, and finding a balance point supporting harmonious coexistence between man and nature has become an issue of increasing concern. On the basis of previous studies that have focused on local coastal wetlands, the temporal and spatial changes and driving forces of wetlands in the Yancheng coastal area from 1991 to 2021 were analyzed over a larger area. According to the study findings: (1) The results of the study of the Yancheng coastal wetland with a larger scope differed significantly from findings resulting from a study of coastal wetland only. This difference was mainly reflected in the relatively stable situation of wetland ecology as a whole, while the changes in local surface features were more significant. (2) Natural wetlands were transformed into artificial wetlands and non-wetland types, and artificial wetlands were transformed into non-wetland types; additionally, reverse transformations and internal transformations of surface features also took place. For instance, the saltpan was transformed into mudflats (86.26 km2), and some mudflats into herbaceous vegetation (193.47 km2). (3) When analyzing the impact intensity of human activities on the Yancheng wetland, it was found that this factor has experienced a process of first rising and then falling. The index was 0.650, 0.653, 0.664, 0.661, and 0.641 in 1991, 2000, 2008, 2016, and 2021, respectively. (4) Lastly, an analysis of factors driving wetland change revealed that human factors were the most critical reasons for wetland landscape change. Our work can play a reference and inspiration role in the monitoring and protection of similar coastal wetlands.
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PYROVETSI, MYRTO, and GEORGE DAOUTOPOULOS. "Contrasts in conservation attitudes and agricultural practices between farmers operating in wetlands and a plain in Macedonia, Greece." Environmental Conservation 24, no. 1 (March 1997): 76–82. http://dx.doi.org/10.1017/s037689299700012x.
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Conservation projects around the world have been impeded by conflicting land uses. In Greece, although agriculture is considered to have significant impacts on wetlands and adversely to have affected conservation, the attitudes of Greek farmers to wetlands and conservation have not been assessed. Data on demographic variables of farm operators, characteristics of the farming operation, irrigation practices, attitudes towards environment and the wetland resources, knowledge on the impact of agriculture on the local environment and opinions on the Common Agricultural Policy reform, were collected through a survey using personal interviews from a random sample of 196 farmers operating in two wetlands, Lakes Mikri Prespa and Kerkini (Ramsar sites), and 141 farmers operating in a plain, in Macedonia, northern Greece.Analysis of the data revealed that farmers practise crop and stock agriculture more intensively in wetlands than in the plain, and exploit wetland resources excessively. Hunting, fishing and wood harvesting are practised, and lake water is used intensively for irrigation by both groups of farmers, with no care for loss of the resources. Alternative methods of irrigation for improving efficiency of water use or alleviating hydrological pressures on the wetlands are not considered. Sustainability of agriculture is at risk as present practices result in impoverished soils, salinization of the fields and waste of water resources. Wetland farmers seemed to have a more negative attitude toward the wetland resources and seemed to be more ignorant of conservation issues or the impact of their practices on the environment than plain farmers. Moreover, their awareness and willingness to adopt an environmentally-friendly type of farming was very low.
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Li, Zhaobin, Lei Ma, Dongmei Gou, Qianqian Hong, Leungkam Fai, and Bo Xiong. "The Impact of Urban Development on Wetland Conservation." Sustainability 14, no. 21 (October 24, 2022): 13747. http://dx.doi.org/10.3390/su142113747.
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Wetland is an integrated ecosystem which includes ecosystems such as hydrology, soil, vegetation, and biological environments. At present, the urbanization rate of China’s national economic development process is rapidly increasing, and by the end of 2021, the urbanization rate of China’s resident population will be 64.72%. This paper analyzes the hydrological effects of urbanization, the impact of water resources, climate change, and biodiversity on wetland ecosystems, and also analyzes the role of wetlands on the ecological environment, especially in terms of ecological and cultural values. The economic and social benefits of the whole society are also analyzed. The ecological and social benefits of urban wetlands have made their conservation and sustainable development increasingly important worldwide. Based on the current situation of China’s urban wetland protection and restoration, we put forward countermeasures and suggestions for China’s urban wetland protection. This is conducive to promoting the sustainable development of the urban wetland ecosystem, promoting the operation of the market, realizing the optimal allocation of ecological resources, improving the benefits of ecological environmental protection, and promoting the coordinated development of the ecological environment. This paper provides a reference for the better development of wetland conservation under urbanization development conditions.
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Wu, Yuxuan, Yi Xi, Maoyuan Feng, and Shushi Peng. "Wetlands Cool Land Surface Temperature in Tropical Regions but Warm in Boreal Regions." Remote Sensing 13, no. 8 (April 8, 2021): 1439. http://dx.doi.org/10.3390/rs13081439.
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Wetlands play a critical role in global hydrological and biogeochemical cycles. Regulating the regional climate is one of the most important ecosystem services of natural wetlands. However, the impact of wetlands on local temperature on the global scale and the attribution is still unclear. This study utilizes the satellite-based products (land surface temperature (LST), albedo, and evapotranspiration (ET)) to evaluate the difference in LST between wetlands and their adjacent landcover types and the possible drivers. Here we show that on average for the whole year, wetlands have a cooling effect in tropical regions, but have a warming effect in boreal regions. The impacts of wetlands on LST show great seasonality in the boreal regions; i.e., the wetlands have a warming effect in winter but a cooling effect in summer. The difference in albedo and ET between wetlands and the other landcover types only interprets 30% of temporal variation of the difference in LST. Due to the large water storage in wetlands, the ground heat flux (G) may interpret the rest of the impact, absorbing energy in summer and releasing energy in winter in wetlands, which has often been neglected in previous studies. Our results indicate that it is critical to comprehensively consider the effects of wetland restoration in different regions to realize potential climatic benefits in the future.
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Masanyu, Julius, and Joseph Oonyu. "Effects of Wetland Policy on Conservation and Household Incomes in Kabale District, Uganda." Uganda Journal of Agricultural Sciences 21, no. 1 (September 30, 2022): 13–23. http://dx.doi.org/10.4314/ujas.v21i1.2.
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This study aimed at establishing why wetland degradation persists in Uganda despite Ramsar and other wetland policy interventions. The objectives were to assess local peoples’ attitudes towards wetlands; assess the level of illegal activities in wetlands; and assess the contribution of wetland management programs and projects to household incomes. We used a cross-sectional mixed methods design and targeted 120 respondents, including residents and opinion leaders in KabaleDistrict. The study showed that fifty three percent of the respondents perceived wetlands favourably. Fifty seven percent of the respondents reported illegal activities of burning followed by hunting at 20%. Twenty two percent did not get any monetary income from wetlands while 43 percent reported getting between shillings 10,000-100,000 annually. Only 12 percent reported getting above 1 million shillings. Illegal activities persisted because of land shortage and being desperate due to lack of other alternatives. In Kabale District, only Nyamuriro wetland project, covering Ikumba and Muko sub counties, implemented wetland restoration. We concluded that the wetland policy has had little impact on household incomes and illegal activities in wetlands. We recommended continuous sensitisation.
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Kim, Seong-Ki, Jong-Hak Yun, Gea-Jae Joo, and Jong-Yun Choi. "Hydrological Characteristics and Trophic Status as Dominant Drivers of Rotifer Community Composition in Artificially Created Riverine Wetlands." Animals 12, no. 4 (February 13, 2022): 461. http://dx.doi.org/10.3390/ani12040461.
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Hydrological characteristics of freshwater ecosystems are powerful determinants of the distribution of biological communities and changes in environmental factors. This study identified relationships between the wetland environment, rotifer community, and hydrological factors for 48 wetlands, to determine their impact on wetland conservation and management. Different hydrological factors produced different wetland environments, which influenced the rotifer community composition. The wetlands with “poor” “in/outflow function” and “shore stability” levels showed high conductivity, turbidity, depth, and concentrations of total nitrogen, total phosphorus, and chlorophyll a. In contrast, the dissolved oxygen levels and velocity were the highest in wetlands with “good” in/outflow function and shore stability variables. The nutritional status of each wetland affected the composition of the rotifer community. Some genera (Keratella, Brachionus, Anuraeopsis, Trichocerca, and Philodina) were found in wetlands with high concentrations of total nitrogen, total phosphorus, and chlorophyll a, and high turbidity and depth. In contrast, Ascomorpha and Ploesoma were found in wetlands with high dissolved oxygen levels and flow velocity. High densities of Lepadella, Lecane, and Testudinella were found in wetlands completely covered by macrophytes. The rotifer community distribution can be used to understand the trophic, current functional, and environmental status of wetlands.
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Parvez, Md Taskin, and ABM Mohsin. "Expansion of aquaculture threatens the existence of wetlands in Bangladesh." Journal of Fisheries 10, no. 2 (August 19, 2022): 102208. http://dx.doi.org/10.17017/j.fish.449.
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Despite positive role of aquaculture in food production, the practice may impact the environment negatively and it is difficult to quantify the loss. In this study, we assessed land use changes in four important wetlands (Hardoho Beel, Angrar Beel, Shaoil Beel and Gopalpur Beel) of Bangladesh through analysis of historical satellite images (1990 – 2020) to show how expansion of aquaculture activities threatens the existence of freshwater wetlands. Since 1990, the water area of all four wetlands decreased significantly over time (all p < 0.001). Mean yearly loss of 47.9 ± 79.3 ha, 99.2 ± 185.5 ha, 51.2 ± 61.9 ha and 2.6 ± 4.7 ha were recorded for Hardoho Beel, Angrar Beel, Shaoil Beel and Gopalpur Beel respectively. A decreasing trend in wetland area was recorded in all wetlands, primarily due to excavation of aquaculture ponds. In 2020, aquaculture ponds represented 72% of the core wetland areas. Two wetlands (Hardoho and Gopalpur) were almost totally lost and converted to aquaculture ponds and agricultural lands. This study concludes that the existence of freshwater wetlands in Bangladesh is at stake and recommends further studies to determine its impacts on people's livelihood and biodiversity.
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Volik, Olena, Matthew Elmes, Richard Petrone, Eric Kessel, Adam Green, Danielle Cobbaert, and Jonathan Price. "Wetlands in the Athabasca Oil Sands Region: the nexus between wetland hydrological function and resource extraction." Environmental Reviews 28, no. 3 (September 2020): 246–61. http://dx.doi.org/10.1139/er-2019-0040.
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Oil sands development within the Athabasca Oil Sands Region (AOSR) has accelerated in recent decades, causing alteration to natural ecosystems including wetlands that perform many vital ecosystem functions such as water and carbon storage. These wetlands comprise more than half of the landscape, and their distribution and local hydrology are the result of interactions among a subhumid climate, topography, and spatially heterogeneous surficial and bedrock geology. Since hydrology plays a fundamental role in wetland ecological functioning and determines wetland sensitivity to human disturbances, the characterization of anthropogenic impacts on wetland hydrology in the AOSR is necessary to assess wetland resilience and to improve current best management practices. As such, this paper reviews the impacts of oil sands development and related disturbances including infrastructure construction, gravel extraction, and land clearing on wetland function in the AOSR. Hydrologic disturbances in wetlands in the AOSR include changes to soil hydrophysical properties that control water table position, the interruption of recharge–discharge patterns, and alteration of micrometeorological conditions; these in turn govern wetland ecological structure and wetland ecosystem processes (e.g., evapotranspiration, nutrient cycling). Given that anthropogenic disturbance can affect natural wetland succession, long-term hydrological monitoring is crucial for predicting the response of these ecosystems to varying levels of human impact.
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Dang, Yongcai, Hongshi He, Dandan Zhao, Michael Sunde, and Haibo Du. "Quantifying the Relative Importance of Climate Change and Human Activities on Selected Wetland Ecosystems in China." Sustainability 12, no. 3 (January 26, 2020): 912. http://dx.doi.org/10.3390/su12030912.
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Climate change and human activities are important factors driving changes in wetland ecosystems. It is therefore crucial to quantitatively characterize the relative importance of these stressors in wetlands. Previous such analyses have generally not distinguished between wetland types, or have focused on individual wetland types. In this study, three representative wetland areas of the upper, middle and lower reaches of the Heilongjiang River Basin (HRB) were selected as the study area. An object-based classification was used with Landsat TM data to extract the spatial distribution of wetland in 1990, 2000 and 2010. We then quantified the relative importance of climate change and human activities on the wetlands by using the R package “relaimpo” package. The results indicated that: (1) the effects of human activities on wetland changes were greater (contribution rate of 63.57%) than climate change in the HRB. Specifically, there were differences in the relative importance of climate change and human activities for wetlands in different regions. Wetlands of the upper reaches were more affected by climate change, while wetlands in the middle and lower reaches were more affected by human activities; (2) climate change had a greater impact (contribution rate of 65.72%) on low intensity wetland loss, while human activities had a greater impact on moderate and severe intensity wetland loss, with respective contribution rates of 57.22% and 70.35%; (3) climate change had a larger effect on the shrub and forested wetland changes, with respective contribution rates of 58.33% and 52.58%. However, human activities had a larger effect on herbaceous wetland changes, with a contribution rate of 72.28%. Our study provides a useful framework for wetland assessment and management, and could be a useful tool for developing wetland utilization and protection approaches, particularly in sensitive environments in mid- and high-latitude areas.
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Cavlovic, Dragana, Dragica Obratov-Petkovic, Mirjana Ocokoljic, and Vladimir Djurdjevic. "Climate change impact on wetland forest plants of SNR Zasavica." Bulletin of the Faculty of Forestry, no. 105 (2012): 17–34. http://dx.doi.org/10.2298/gsf1205017c.
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Wetlands are among the most vulnerable habitats on the planet. Very complex forest ecosystems are also parts of wetlands. Research and analysis of forest vegetation elements, leads to a conclusion about ecological conditions of wetlands. The aim of the paper is detail forest vegetation study, and analyzing the impact of climate changes on wetland forest vegetations of the strict protection area at the SNR Zasavica Ramsar site. Field research was carried out by using Braun-Blanquet?s Zurich-Montpelier school method. Phytogeographical elements and life forms of plants were determined subsequently, in order to get indicator values of wetland plants. Coupled Regional Climate Model (CRCM), EBU-POM was used for the climate simulations. Exact climatic variables for the site were determined by downscaling method. Climatic variables reference values were taken for the period of 1961-1990, and climate change simulations for the period 2071-2100 (A1B and A2). Indicator values of forest plants taken into consideration were humidity and temperature; therefore, ecological optimums were determined in scales of humidity and temperature. Regional Climate Model shows that there will be a long and intensive dry period in the future, with high temperatures from April till October. Continental winter will be more humid, with higher precipitation, especially in February. Based on the analysis of results it was concluded that wetlands are transitional habitats, also very variable and therefore vulnerable to changes. The changes may lead to the extinction of some plant species.
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Singh, Manudeo, and Rajiv Sinha. "Integrating Hydrological Connectivity in a Process–Response Framework for Restoration and Monitoring Prioritisation of Floodplain Wetlands in the Ramganga Basin, India." Water 14, no. 21 (November 3, 2022): 3520. http://dx.doi.org/10.3390/w14213520.
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Floodplain wetlands are critical for sustaining various ecological and hydrological functions in a riverine environment. Severe anthropogenic alterations and human occupation of floodplains have threatened these wetlands in several parts of the world. A major handicap in designing sustainable restoration and monitoring strategies for these wetlands is the lack of scientific process-based understanding and information on the basin-scale controls of their degradation. Here, we offer a novel approach to integrate the connectivity of the wetlands with the surrounding landscape along with other attributes such as stream density, hydrometeorological parameters, and groundwater dynamics to explain their degradation and then to prioritise them for restoration and monitoring. We hypothesise that the best possible connectivity scenario for the existence of a wetland would be if (a) the wetland has a high connectivity with its upslope area, and (b) the wetland has a low connectivity with its downslope region. The first condition ensures the flow of water into the wetland and the second condition allows longer water residence time in the wetland. Accordingly, we define four connectivity-based wetland health scenarios—good, no impact, bad, and worst. We have implemented the proposed method in 3226 wetlands in the Ramganga Basin in north India. Further, we have applied specific selection criteria, such as distance from the nearest stream and stream density, to prioritise the wetlands for restoration and monitoring. We conclude that the connectivity analysis offers a quick process-based assessment of wetlands’ health status and serves as an important criterion to prioritise the wetlands for developing appropriate management strategies.
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Toroitich, Caleb, Mugwima Njuguna, and Dennis Karanja. "Effects of urban wetland patch pattern on the biodiversity of aquatic birds in Nairobi, Kenya." Journal of Agriculture, Science and Technology 21, no. 1 (April 26, 2022): 83–109. http://dx.doi.org/10.4314/jagst.v21i1.8.
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Urban wetlands are ubiquitous landscape elements that affect the spatial pattern and functions of cities. Despite being rich and important habitats for a variety of birds, they are continually being isolated or lost. Isolation and loss negatively impact on the integrity of the urban landscape pattern and compromises on biophilic planning and development. Since urbanization is a continuous cultural process, it is important to investigate how its impacts, which are invariably in conflict with nature, would portend for aquatic bird communities in urban areas. This study sought to determine the variability and relationship between the structural patch pattern of palustrine wetlands in Nairobi and the species richness and abundance of aquatic birds in these wetlands. From a population of 300 wetlands, this study used heterogeneous sampling to identify and investigate 31 palustrine wetlands spread across the city of Nairobi. For each of these wetlands, a variety of landscape metrics were calculated and the species diversity of aquatic birds was quantified. Multiple regression analysis was performed in IBM SPSS Statistics 21 to determine the relationships between wetland patch pattern and wetland biodiversity. The study found that patch pattern significantly affects aquatic bird biodiversity, R² = .516, F (7, 23) = 3.498, p < .05. It was also found that the characteristics of the wetland neighbourhood significantly affected aquatic bird biodiversity, R² = .301, F (3, 27) = 3.867, p < .05. This study highlights the need to mainstream, plan, and design for the conservation and monitoring of spatial patterns and biodiversity of palustrine wetlands in urban landscapes. In doing so, biophilic cities are created, bio-systemic urban infrastructure is generated, human wellbeing is enhanced, and urban wetland ecosystem services are valued.
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Pandey, P., D. N. Shah, and R. D. Tachamo-Shah. "Impact of invasive alien plant species on aquatic biodiversity of Koshi Tappu Wetlands : Ramsar Site, Nepal." Banko Janakari 30, no. 2 (December 17, 2020): 48–58. http://dx.doi.org/10.3126/banko.v30i2.33478.
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Koshi Tappu Wetlands play a significant role in the conservation of many rare and endangered species of flora and fauna. However, this wetland is threatened by several natural and anthropogenic stressors; among others, invasion by invasive species is the most serious problem. The objective of this study was to prepare an inventory list of wetlands, categorize the wetlands based on the coverage of alien species, identify the problematic aquatic invasive plant species, and assess their impact on water quality and aquatic biodiversity (fish and macroinvertebrates). This study was conducted in winter and spring seasons of 2018. Composite water samples were collected from the wetlands with different covers of invasive species. Macroinvertebrate samples were collected using hand net of 500µm mesh following the habitat specific sampling approach, and fishes were sampled using Cast Net. The analysis of water quality parameters, macroinvertebrates and fishes were performed for different levels of invasion. Altogether, 66 wetlands were documented in the Buffer Zone located in the east of eastern embankment of the KTWR. Out of the total 66 wetlands, 33.33% were found to be non-invaded while 66.67% were found to be invaded by the invasive macrophytes. The invaded wetlands were further subdivided into abundant 'A' (>75% coverage), common 'C' (50-75% coverage) frequent 'F' (25-50%coverage), occasional 'O' (5-25% coverage), and rare 'R' (1-5% coverage) which were found to have occupied 19.69%, 16.67%, 12.12%, 13.63% and 4.50%, respectively, of the invaded wetlands (66.61%). The most problematic invasive species were found to be Eichhornia crassipes and Ipomoea carnea. The dissolved oxygen (DO) decreased while the total alkalinity and free CO2 increased significantly with the increased coverage of invasive macrophytes. The macroinvertebrate diversity was observed high in common and abundant coverage, but the fish diversity was high in the frequent coverage of invasive species. The taxa compositions shifted from “Decapoda” and “Ephemeroptera” to “Odonata” and “Mollusca” in none to abundant coverage of invasive species. The findings of this research are expected to help wetland managers and related stakeholders to understand the level of impact of different coverage of invasive species on wetlands, help to develop the conservation strategy and action plans to mitigate the spread of these invasive species, and wise use of wetlands.
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Adeeyo, Adeyemi O., Stanley S. Ndlovu, Linda M. Ngwagwe, Mulalo Mudau, Mercy A. Alabi, and Joshua N. Edokpayi. "Wetland Resources in South Africa: Threats and Metadata Study." Resources 11, no. 6 (June 3, 2022): 54. http://dx.doi.org/10.3390/resources11060054.
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Wetlands are important ecosystems with physical and economic benefits. However, many reports confirm the drastic loss of wetlands due to urbanisation and anthropogenic activities in many parts of the world. This study focused on the present-day state of wetlands in the Republic of South Africa. A meta-analysis was performed to elucidate the distribution and level of protection of selected wetlands. The classification of existing wetlands and the threat against wetlands were reported. Wetlands in South Africa are grossly endangered by human pollution, developmental activities, and invasive plants. From data obtained, about 47.89% of reported wetlands have a low level of protection and are thus susceptible to threats. The South African Department of Environmental Affairs protects most of the wetlands (28.17%) in the country. Major weaknesses identified for wetland degradation are the ignorance of people about the benefits of wetlands and the weak implementation of frameworks and policies that currently exist. The impact of legislations and policies on the preservation of wetlands is presented as well as the need for community education on environmental degradation. Therefore, the current state of several wetlands calls for urgent attention, and there is need for a strengthening of existing laws and policies in order to prevent wetland damage and extinction.
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Xie, Jing, Yeran Sun, Xiao Liu, Zhi Ding, and Ming Lu. "Human Activities Introduced Degenerations of Wetlands (1975–2013) across the Sanjiang Plain North of the Wandashan Mountain, China." Land 10, no. 12 (December 9, 2021): 1361. http://dx.doi.org/10.3390/land10121361.
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Human-induced dramatic loss and fragmentation of wetlands need further understanding through historical backtracking analysis at a geographical landscape scale. In this study, we investigated time-series wetlands maps from 1975, 1983, 1989, 2000, 2006, and 2013 derived from Landsat images based on the object-oriented classification of wetlands across the Sanjiang Plain north of the Wandashan Mountains. The spatial and temporal changes in the wetlands that occurred at different time periods and the Euclidean distances between artificial land-use types and natural land-cover areas were evaluated for their impact. Our results showed that wetland was the dominant landscape in 1975; however, arable land became the main land coverage in 2013 owing to severe changes in agricultural development over the past decades. The closer to arable land, the greater the wetland loss during the entire investigated period; agriculture activities were the dominant driving force for the degradation of wetlands based on landscape changes; secondary was the rapid expansion in building land use (i.e., human settlement, transportation, and establishment of irrigation canals). More specifically, the rapid loss of wetland areas over 1975–2000 was mainly owing to extensive agricultural reclamation. The mitigated loss of wetland areas over 2000–2013 was because of the protection and restored implementation of wetlands under governmental policies. The wetlands of the study area suffered severe human disturbance, and our analysis may help explain the loss process of wetlands, but more effective management and administration is still needed to address the issues around the balance between agricultural production and wetland protection for further sustainable development.
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Mitsch, W. J. "Applying science to conservation and restoration of the world's wetlands." Water Science and Technology 51, no. 8 (April 1, 2005): 13–26. http://dx.doi.org/10.2166/wst.2005.0215.
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The world has an estimated 7 to 9 million km2 of wetlands which can be defined through their hydrology, physiochemical environment, and biota. Many human cultures have lived in harmony with wetland environments for centuries. Many others have not, resulting in drainage or severe impact of wetlands throughout the world. Conservation of wetlands needs to be a priority for the cultural and ecological values they provide. But a more optimistic note is that large-scale restoration and re-creation of wetlands and riverine systems is beginning to happen throughout the world through ecological engineering. Examples of large-scale wetland restoration projects are presented for Delaware Bay, the Skjern River (Denmark), Florida Everglades, Louisiana Delta, the Mississippi River Basin, and the Mesopotamian Marshlands of Iraq.
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Marlow, Clayton, and Sarah Summerford. "Impact of Irrigation Cessation on Wetland Communities within the Elk Ranch, Grand Teton National Park, Moose, Wyoming." UW National Parks Service Research Station Annual Reports 30 (January 1, 2006): 46–50. http://dx.doi.org/10.13001/uwnpsrc.2006.3643.
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Riparian ecology research in Arizona and California has documented the likelihood of a subsurface linkage between irrigation, especially flood-irrigation, and riparian function (Smith et al. 1989; Stromberg et al. 1996). Initial groundwater monitoring results from rural New Mexico indicate water tables rose 1 to 2m after the onset of field irrigation and subsurface flow paths towards the Rio Grande River developed soon after (Fernald et al. 2008). Results from a study of wetlands in southeastern Wyoming suggest that declining flood-irrigation levels would lead to a reduction in the total area of wetlands and related areas of wetland vegetation types in the Laramie Basin (Peck and Lovvorm 2001). Stringham et al. (1998) have reported further evidence for a linkage between irrigation and riparian function. These Oregon researchers noted lower water temperatures in stream reaches receiving subsurface return flows from irrigated hayfields than similar reaches flowing through non-irrigated lands. This information is timely because Grand Teton National Park (GTNP) managers have begun an evaluation of historic irrigation operations within the Park and are endeavoring to learn how cessation of flood irrigation will affect Park wetlands. The historically irrigated hayfields at the Elk Ranch provide an opportunity to address the Park Service's informational needs through identification of vegetation composition, soil physical characteristics and groundwater patterns associated with irrigated and naturally occurring wetlands. Successful description of patterns unique to natural wetlands will provide an avenue for predicting which Park wetlands would remain functional should irrigation efforts be brought to a close. Development of criteria for identifying naturally occurring wetlands could also serve as a basis for identifying areas for wetland mitigation and rehabilitation elsewhere in GTNP and the mountain valleys of the Northern Rocky Mountains.
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Mohammed, Ibrahim, Ayalew Wondie, and Minwyelet Mengist. "The environmental quality and macroinvertebrate community structures of wetlands found in the Lake Tana Watershed, Ethiopia." Journal of the Cameroon Academy of Sciences 17, no. 3 (May 25, 2022): 183–203. http://dx.doi.org/10.4314/jcas.v17i3.1.
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The present study was conducted to assess the environmental quality status and macroinvertebrate community structures of wetlands using macroinvertebrates as bioindicators. A multimetric biotic index approach was used for the study. The findings revealed 3,367 macroinvertebrates belonging to 37 families. The percentages of Ephemeroptera, Odonata, and Tricoptera (%EOT), percent Diptera, percent filterercollectors, the ratio of Ephemeroptera, Plecoptera, and Trichoptera to Chironomid (EPT/C), the Biological Monitoring Working Party Score, and the Shannon–Wiener diversity index were all significantly related to human disturbance and could be used to assess water quality. Based on the macroinvertebrate index, human disturbance had a significant impact on Shesher wetland, a relatively lower impact on Avaji and Yitamot, and a moderate impact on Chimba, while Dena and Wonjeta had good habitat quality. Their water quality was very poor, poor, moderate, and very good, in that order. Farming, leather tanning, waste dumping, and effluent discharges were responsible for the poor habitat quality of impacted wetlands. Therefore, unless managed properly, human disturbance activities in the wetlands catchment were threatening macroinvertebrates and the wetlands ecosystem. Hence, implementation of catchment-based management together with continuous health status monitoring and a standalone wetland policy should be established.
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Ling, Zhen, Ju Rui Yang, and Zhe Nai Lu. "Research on the Effect of Sewage Concentration on Treatment Efficiency of Constructed Wetlands." Advanced Materials Research 356-360 (October 2011): 1510–15. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1510.
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By changing the surface flow(SF) and subsurface flow (SSF)constructed wetlands inflow water total nitrogen (TN) concentrations, with 6 plant species (purple leaf canna, water onion, water hyacinth, water celery, calamus, reed) in comparative experiments, comparative analysis of the 6 different SF and SSF constructed wetlands treatment rate with the variation of the concentration obtained in the 6 different plant SF and SSF constructed wetlands, the optimal concentration theory, theory of optimal removal rate, the actual optimal concentration, the actual optimal removal rate and TN maximum daily processing load. The results showed that: in the 6 different plant of SF and SSF constructed wetlands for TN removal efficiency decreased as the concentration increased, different plant, different levels of treatment rate reduction, and removal value of SSF was lower than SF. Purple leaf canna removal reduced the minimum, SF processing rate decreased 17.07%, SSF dropped 15.94%; Reed removal rate decreased obviously, the SF processing rate decreased 20.86%, SSF dropped 18.2%. Meanwhile, according to the result of the experiment, the maximum TN daily remove quantity in the six species of plants of SF constructed wetland was 547.20 g•m-2•d-1;in SSF constructed wetland was 577.60 g•m-2•d-1. Wetland as an efficient, low consumption of new sewage treatment technology has been widely accepted, especially in total nitrogen (TN) in the application phase for the people attention. Study found that of nitrogen removal efficiency of constructed wetlands and external factors, a wetland substrate, plant species, microbes, sewage load, residence time, nitrogen in sewage and water distribution methods[1]. For the wastewater load on the removal of wetlands, Zhou Yaohua so that low concentration of domestic sewage (20% water) on the ground flora as a whole more effective than a higher concentration of the decontamination wastewater (100% effluent) better overall removal [2]. Cui Fang water residence time in the study of the impact of decontamination capability of wetlands that the reed wetland water CODcr, TP, NH3-N concentration had little effect on the removal, and TN concentrations had a significant effect on the removal, removal of only 27% [3], Yuan Donghai and others that wetlands on the initial concentration of pollutants in wastewater have certain requirements, low pollution case, the constructed wetland was better; higher concentration of pollutants cases, the purification efficiency dropped [4]. Effluent decontamination effect on the wetland will have some impact, at present, domestic and international research to a single species of plants, mainly a single type of wetland, considering the different plants, different types of comparative study of wetlands was less. By changing SF and SSF constructed wetlands, inflow water TN concentrations, with 6 plant speciesin comparative experiments, comparative analysis of the 6 different plants of SF and SSF constructed wetlands treatment rate with the variation of the concentration obtained in 6 different plant SF and SSF constructed wetlands, the optimal concentration theory, theory of optimal removal rate, the actual optimal concentration, optimal removal rate and the actual TN maximum daily processing load, optimizing the hydraulic conditions of wetlands. Research on the promotion of artificial wetland technology, further development of eco-environmental rehabilitation has a certain significance
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Li, Xia, Chandana Mitra, Luke Marzen, and Qichun Yang. "Spatial and Temporal Patterns of Wetland Cover Changes in East Kolkata Wetlands, India from 1972 to 2011." International Journal of Applied Geospatial Research 7, no. 2 (April 2016): 1–13. http://dx.doi.org/10.4018/ijagr.2016040101.
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Land use and land cover change has a slow but prolonged impact on various aspects of environment on local, regional and global scales. In developing countries especially population pressure and food demand have compelled conversion of wetlands to built-up and agricultural lands. One such unique example is the East Kolkata Wetlands (EKWs) located on the eastern fringes of Kolkata City in India where such land cover change is very intense and rapid. In this study, wetland conversions in EKWs from 1972 to 2011 were analyzed with four Landsat images using the Geographic Object-Based Image Analysis (GeOBIA) and a post-classification comparison. Results suggested that wetland areas decreased by 17.9 percent during the study period. The western part of the wetlands saw the maximum conversion of wetlands to built-up areas with time, whereas the east and south experienced more of wetlands to agricultural and other land conversions
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Wienhold, Carol E., and A. G. van der Valk. "The impact of duration of drainage on the seed banks of northern prairie wetlands." Canadian Journal of Botany 67, no. 6 (June 1, 1989): 1878–84. http://dx.doi.org/10.1139/b89-238.
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To determine the potential role of seed banks in the restoration of drained wetlands, the seed banks of 30 extant and 52 drained and cultivated prairie potholes were sampled in Iowa, Minnesota, and North Dakota; the potholes had been drained between 5 and 70 years ago. The midsummer vegetation of most of these potholes was also sampled. The number of species in the seed bank of a pothole declined from a mean of 12.3 in extant potholes to 7.5, 5.4, 5.0, 7.4, 3.2, and 2.1 in potholes drained up to 5, 10, 20, 30, 40, and 70 years ago, respectively. The mean total seed density of extant potholes was 3600 seeds/m2. It increased to 7000 seeds/m2 up to 5 years after drainage, but then declined rapidly to 1400, 1200, 600, 300, and 160 after up to 10, 20, 30, 40, and 70 years after drainage. Changes in both species richness and seed density with increasing duration of drainage varied from state to state. About 60% of the species present in the seed banks of extant or recently drained wetlands were not detected in wetlands that had been drained for more than 20 years. Vegetation surveys of extant and drained wetlands indicated that as many or more wetland species not detected in the seed bank were present in the vegetation, as there were wetland species in the seed bank.
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Habegger, Rachel A., and Jordan M. Marshall. "Relationships between algal biomass and diversity with stream size and adjacent land use." Fine Focus 1, no. 1 (December 1, 2014): 20–28. http://dx.doi.org/10.33043/ff.1.1.20-28.
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Land use adjacent to waterways, such as development or agriculture, alters hydrological patterns leading to increases in runoff and nutrient input. Forests and wetlands, as natural land cover types, reduce water movement and allow infiltration into soil. We measured algal biomass and diversity in order to quantify the influence neighboring land cover types have on streams in Northeastern Indiana. In the study area, cultivated crops were the dominant land cover type, with open development and deciduous forest following. Emergent wetland area had the greatest influence on algal biomass, with increases in wetland area decreasing biomass. However, open development, low intensity development, grassland, shrub, and forested wetlands added to increases in biomass. Conversely, forested wetlands reduced algal richness, while open development and pastures increased richness. Because open development (i.e. dominated by turf grass, lawns, parks, golf courses) was the second most common land cover type and positively influenced both algal biomass and richness, management of those properties will likely have direct impact on nutrient flow into streams. Additionally, adding functional wetlands dominated by emergent herbaceous plants will directly impact future algal biomass.
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Mostafa, H., S. Attia, and Z. Feisal. "A strategy for Lakes ecological restoration by integrated constructed wetlands, Case study: lake Qaroun, Egypt." IOP Conference Series: Earth and Environmental Science 1113, no. 1 (December 1, 2022): 012008. http://dx.doi.org/10.1088/1755-1315/1113/1/012008.
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Abstract Wetlands have a significant impact on healing degraded ecosystems and restoring environmental balance for their broad range of benefits. Lakes are considered a type of wetlands combining terrestrial and aquatic ecosystems, it is important to restore lakes wetlands to regain the ecological services provided by these systems, which might have been severely altered from human pressure, pollution and urban development. This paper investigates the concept of ecological restoration of Lake Qaroun wetlands proposing an ecological restoration strategy to enhance the current situation of site by using integrated constructed wetlands. The research conducts a literature review of wetlands restoration concept and the values of integrated constructed wetland as a restoration approach, besides showcasing several case studies of lake restoration plans than choosing two similar case studies with same the environmental challenges to determine the efficiency range of their restoration plans and their physical impact on site. Lake Qaroun previous development plans and the current situation were reviewed to determine the factors of success or failure. The proposed strategy of ecological restoration using integrated constructed wetlands combines an extensive management /monitoring program supported by governance inclusion and public participation, to be further implemented to achieve a better impact and a successful restoration process.
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Zhang, Yanqin, Xianli You, Shanjun Huang, Minhua Wang, and Jianwen Dong. "Knowledge Atlas on the Relationship between Water Management and Constructed Wetlands—A Bibliometric Analysis Based on CiteSpace." Sustainability 14, no. 14 (July 6, 2022): 8288. http://dx.doi.org/10.3390/su14148288.
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Water management is a crucial resource conservation challenge that mankind faces, and encouraging the creation of manmade wetlands with the goal of achieving long-term water management is the key to long-term urban development. To summarise and analyse the status of the research on the relationship between water management and constructed wetlands, this paper makes use of the advantages of the bibliometric visualization of CiteSpace to generate country/region maps and author-collaboration maps, and to analyse research hotspots and research dynamics by using keywords and literature co-citations based on 1248 pieces of related literature in the core collection in the Web of Science (WoS) database. The existing research shows that the research content and methods in the field of constructed-wetland and water-management research are constantly being enriched and deepened, including the research methods frequently used in constructed wetlands in water management and in the research content under concern, the functions and roles of constructed wetlands, the relevant measurement indicators of the purification impact of constructed wetlands on water bodies, and the types of water bodies treated by constructed wetlands in water management. We summarise the impact pathways of constructed wetlands on water management, as well as the impact factors of constructed wetlands under water-management objectives, by analysing the future concerns in the research field to provide references for research.
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Zhang, Bo, Zhenguo Niu, Dongqi Zhang, and Xuanlin Huo. "Dynamic Changes and Driving Forces of Alpine Wetlands on the Qinghai–Tibetan Plateau Based on Long-Term Time Series Satellite Data: A Case Study in the Gansu Maqu Wetlands." Remote Sensing 14, no. 17 (August 24, 2022): 4147. http://dx.doi.org/10.3390/rs14174147.
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The Qinghai–Tibet Plateau (QTP), also known as the Third Pole of the Earth, is sensitive to climate change, and it has become a hotspot area for research. As a typical natural ecosystem on the QTP, alpine wetlands are particularly sensitive to climate change. The identification of different types of alpine wetland and analysis of changes in their distributions and areas are the most direct indicators for characterizing the impact of climate change on wetlands. To understand the dynamic change process of the alpine wetlands in the QTP and their responses to climate change, the Maqu wetlands, located at the source of the Three Rivers in the eastern part of the QTP, was taken as an example; the Google Earth Engine (GEE) remote sensing cloud platform and long-term dense Landsat time series data from 1990 to 2020 were used to map the annual wetland classification and to analyze the evolution characteristics of the wetlands and their driving forces. The results revealed that (1) based on dense Landsat time series data, different alpine wetland types can be effectively distinguished, including swamp, swamp meadow, and wet meadow. (2) From 1990 to 2020, the area of the Maqu wetlands exhibited an overall fluctuating decrease, with the total area decreasing by about 23.35%, among which the swamp area decreased the most (by 27.15%). The overall type of change was from wet to dry. All of the types of wetlands were concentrated between 3400 and 3600 m above sea level, and the reduction in the wetland area was concentrated on slopes < 3°, with the greatest loss of wetland area occurring on shady slopes. (3) The driving forces of the changes in the wetlands were predominantly temperature and precipitation, and the greatest correlation was between the total wetland area and the growing season temperature. The results of this study provide valuable information for the conservation of alpine wetlands.
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Fu, Yunmei, Yanhui Dong, Yueqing Xie, Zhifang Xu, and Liheng Wang. "Impacts of Regional Groundwater Flow and River Fluctuation on Floodplain Wetlands in the Middle Reach of the Yellow River." Water 12, no. 7 (July 6, 2020): 1922. http://dx.doi.org/10.3390/w12071922.
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Floodplain wetlands are of great importance in the entire river and floodplain ecosystems. Understanding the hydrological processes of floodplain wetlands is fundamental to study the changes in wetlands caused by climate change and human activities. In this study, floodplain wetlands along the middle reach of the Yellow River were selected as a study area. The hydrological processes and the interactions between the river and the underlying aquifer were investigated by combining remote sensing, hydraulic monitoring, and numerical modeling. Wetland areas from 2014 to 2019 were extracted from Landsat 8 remote sensing images, and their correlation with the river runoff was analyzed. The results indicate that the river flow had a limited impact on the wetland size and so did groundwater levels, due to the strong reliance of wetland vegetation on water levels. Based on hydrological and hydrogeological conditions, a surface water–groundwater coupled numerical model was established. The comparison and correlation analysis between the monitored groundwater head and the simulated river stage also show that river flow did not play a first-order role in controlling the groundwater levels of wetlands in the study area. The simulation results also suggest that it is the regional groundwater flow that mainly sustains shallow groundwater of floodplain wetlands in the study area. The floodplain wetland of the study area was dynamic zones between the regional groundwater and river, the contrasting pattern of hydrological regimes on both banks of the Yellow River was due to a combination of regional groundwater flow and topography.
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Gell, P. A., C. M. Finlayson, and N. C. Davidson. "Understanding change in the ecological character of Ramsar wetlands: perspectives from a deeper time – synthesis." Marine and Freshwater Research 67, no. 6 (2016): 869. http://dx.doi.org/10.1071/mf16075.
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The Convention for Wetlands was signed in 1971 as part of a global measure to mitigate the loss and degradation of the world’s wetlands. Signatory nations nominate wetlands as internationally important and commit to maintaining their ‘ecological character’. In many cases the character that has been maintained was that occurring at the time of nomination with scant attention to the variability and change that occurs over longer periods. Palaeoclimate and palaeoecological research now reveals a diverse array of conditions in wetlands in the past and attests that any recently identified condition may be transient. The research further reveals the considerable magnitude and antiquity of the impact of people on wetlands. Hence the site description used by wetland managers would benefit from the provision of a longer-term perspective of change. The changing state of wetlands provides a dilemma for wetland managers. In response, a workshop on understanding change in wetlands was held in Queenscliff, Australia, in November 2013 to draw together perspectives of change from neo- and palaeoecological sources to enable the formulation of new pathways of assessment to better accommodate the dynamic nature of wetlands. A synthesis of the information provided at the workshop is provided in this paper.
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Ji, Wei. "REMOTELY-SENSED URBAN WET-LANDSCAPES: AN INDICATOR OF COUPLED EFFECTS OF HUMAN IMPACT AND CLIMATE CHANGE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B8 (June 23, 2016): 915–18. http://dx.doi.org/10.5194/isprs-archives-xli-b8-915-2016.
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This study proposes the concept of urban wet-landscapes (loosely-defined wetlands) as against dry-landscapes (mainly impervious surfaces). The study is to examine whether the dynamics of urban wet-landscapes is a sensitive indicator of the coupled effects of the two major driving forces of urban landscape change – human built-up impact and climate (precipitation) variation. Using a series of satellite images, the study was conducted in the Kansas City metropolitan area of the United States. A rule-based classification algorithm was developed to identify fine-scale, hidden wetlands that could not be appropriately detected based on their spectral differentiability by a traditional image classification. The spatial analyses of wetland changes were implemented at the scales of metropolitan, watershed, and sub-watershed as well as based on the size of surface water bodies in order to reveal urban wetland change trends in relation to the driving forces. The study identified that wet-landscape dynamics varied in trend and magnitude from the metropolitan, watersheds, to sub-watersheds. The study also found that increased precipitation in the region in the past decades swelled larger wetlands in particular while smaller wetlands decreased mainly due to human development activities. These findings suggest that wet-landscapes, as against the dry-landscapes, can be a more effective indicator of the coupled effects of human impact and climate change.
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Ji, Wei. "REMOTELY-SENSED URBAN WET-LANDSCAPES: AN INDICATOR OF COUPLED EFFECTS OF HUMAN IMPACT AND CLIMATE CHANGE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B8 (June 23, 2016): 915–18. http://dx.doi.org/10.5194/isprsarchives-xli-b8-915-2016.
Full textAbstract:
This study proposes the concept of urban wet-landscapes (loosely-defined wetlands) as against dry-landscapes (mainly impervious surfaces). The study is to examine whether the dynamics of urban wet-landscapes is a sensitive indicator of the coupled effects of the two major driving forces of urban landscape change – human built-up impact and climate (precipitation) variation. Using a series of satellite images, the study was conducted in the Kansas City metropolitan area of the United States. A rule-based classification algorithm was developed to identify fine-scale, hidden wetlands that could not be appropriately detected based on their spectral differentiability by a traditional image classification. The spatial analyses of wetland changes were implemented at the scales of metropolitan, watershed, and sub-watershed as well as based on the size of surface water bodies in order to reveal urban wetland change trends in relation to the driving forces. The study identified that wet-landscape dynamics varied in trend and magnitude from the metropolitan, watersheds, to sub-watersheds. The study also found that increased precipitation in the region in the past decades swelled larger wetlands in particular while smaller wetlands decreased mainly due to human development activities. These findings suggest that wet-landscapes, as against the dry-landscapes, can be a more effective indicator of the coupled effects of human impact and climate change.
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Maas, Carly M., William P. Anderson, and Kristan Cockerill. "Managing Stormwater by Accident: A Conceptual Study." Water 13, no. 11 (May 26, 2021): 1492. http://dx.doi.org/10.3390/w13111492.
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Stormwater-driven road salt is a chronic and acute issue for streams in cold, urban environments. One promising approach for reducing the impact of road salt contamination in streams and adjacent aquifers is to allow “accidental wetlands” to flourish in urban areas. These wetlands form naturally as a byproduct of human activities. In this study, we quantified the ability of an accidental wetland in northwestern North Carolina, USA, to reduce the timing and peak concentration of road salt in a stream. Monitoring suggests that flow and transport processes through the wetland reduce peak concentrations and delay their arrival at the adjacent stream. We expand these findings with numerical simulations that model multiple meltwater and summer storm event scenarios. The model output demonstrates that small accidental wetland systems can reduce peak salinities by 94% and delay the arrival of saltwater pulses by 45 days. Our findings indicate that accidental wetlands improve stream water quality and they may also reduce peak temperatures during temperature surges in urban streams. Furthermore, because they find their own niche, accidental wetlands may be more effective than some intentionally constructed wetlands, and provide opportunities to explore managing stormwater by letting nature take its course.
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Desta, Mare Addis, Gete Zeleke, William A. Payne, and Wubneh Belete Abebe. "Impact of Rice Expansion on Traditional Wetland Management in the Tropical Highlands of Ethiopia." Agriculture 12, no. 7 (July 19, 2022): 1055. http://dx.doi.org/10.3390/agriculture12071055.
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Despite the fact that rice was only recently brought to Ethiopia, the Ethiopian government has dubbed it the “millennium crop” because of its importance as a food security crop, as well as a source of revenue and job possibilities. Rice production is being practiced on wetland areas and floodplains; however, no attention has been given to the sustainability of these wetlands, or to the integration of different previous indigenous activities, such as livestock rearing and farming of different crops in the area. This study aims to investigate the impact of rice expansion on traditional wetland management in the Fogera floodplain wetlands of the Lake Tana basin. Data were generated via interviews and the application of GIS and remote sensing. The survey questionnaire was administered to 385 rice-producing farmers. The respondents (87%) confirmed that increases in the price of rice encouraged them to shift from the cultivation of conventional crops to rice farming. Subsequently, between the years 1973 and 2014, wetland areas have been reduced from 3114 ha to 1060 ha, accompanied by a high rate of expansion in rice production in the area. Major activities being pursued in the wetlands of the study area do not consider environmental impacts. As a result, the diverse ecosystem services available in the past have been compromised through time. Sense of ownership of wetland resources and their benefit shall be communicated to reduce abusive utilization. Therefore, the policies, strategies, and development activities implementation need to consider environmental issues in rice production enhancement endeavors.
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Ali Baig, M. H., M. Sultan, M. Riaz Khan, L. Zhang, M. Kozlova, N. Abbas Malik, and S. Wang. "WETLAND CHANGE DETECTION IN PROTECTED AND UNPROTECTED INDUS COASTAL AND INLAND DELTA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W7 (September 14, 2017): 1495–501. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w7-1495-2017.
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Worth of wetland sites lies in their ecological importance. They enhance ecosystem via provision of ecological services like improving water quality, groundwater infiltration, flood risk reduction and biodiversity regulation. Like other parts of the world Pakistan is also facing wetlands degradation. Ecological and economic significance of wetlands was recognized officially in 1971 as Pakistan became signatory of Ramsar wetland convention. Wetlands provide habitat to species of ecological and economic importance. Despite being recognized for international importance, Ramsar figures state that almost half of Pakistan’s wetlands are at moderate or prominent level threat. Wetlands ecosystems are deteriorating at a rapid rate, if uncontrolled this trend may lead to substantial losses. Therefore, management of these resources demands regular monitoring. Present study is dedicated to assessing levels of change overtime in three distinct types of wetlands in Pakistan i.e. Indus delta a coastal wetland, Uchhali complex an inland wetland which are both protected sites while another site Nurri Lagoon which is not sheltered under any category of protected areas. Remotely sensed data has remarkable applications in change detection. Multitemporal Landsat images were used to map changes occurring from 2006 to 2016. Results reveal that wetland area has considerably decreased for all types. Both protected sites have experienced degradation though impact is comparatively lesser than unprotected Nurri lagoon. Significance of protection strategies cannot be denied, it is recommended that mere declaration of a site protected area is not sufficient. It is equally important to control non-point pollutants and ensuring the compliance of conservation strategy.
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Taillardat, Pierre, Benjamin S. Thompson, Michelle Garneau, Karelle Trottier, and Daniel A. Friess. "Climate change mitigation potential of wetlands and the cost-effectiveness of their restoration." Interface Focus 10, no. 5 (August 14, 2020): 20190129. http://dx.doi.org/10.1098/rsfs.2019.0129.
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The cost-effective mitigation of climate change through nature-based carbon dioxide removal strategies has gained substantial policy attention. Inland and coastal wetlands (specifically boreal, temperate and tropical peatlands; tundra; floodplains; freshwater marshes; saltmarshes; and mangroves) are among the most efficient natural long-term carbon sinks. Yet, they also release methane (CH 4 ) that can offset the carbon they sequester. Here, we conducted a meta-analysis on wetland carbon dynamics to (i) determine their impact on climate using different metrics and time horizons, (ii) investigate the cost-effectiveness of wetland restoration for climate change mitigation, and (iii) discuss their suitability for inclusion in climate policy as negative emission technologies. Depending on metrics, a wetland can simultaneously be a net carbon sink (i.e. boreal and temperate peatlands net ecosystem carbon budget = −28.1 ± 19.13 gC m −2 y −1 ) but have a net warming effect on climate at the 100 years time-scale (i.e. boreal and temperate peatland sustained global warming potential = 298.2 ± 100.6 gCO 2 eq −1 m −2 y −1 ). This situation creates ambivalence regarding the effect of wetlands on global temperature. Moreover, our review reveals high heterogeneity among the (limited number of) studies that document wetland carbon budgets. We demonstrate that most coastal and inland wetlands have a net cooling effect as of today. This is explained by the limited CH 4 emissions that undisturbed coastal wetlands produce, and the long-term carbon sequestration performed by older inland wetlands as opposed to the short lifetime of CH 4 in the atmosphere. Analysis of wetland restoration costs relative to the amount of carbon they can sequester revealed that restoration is more cost-effective in coastal wetlands such as mangroves (US$1800 ton C −1 ) compared with inland wetlands (US$4200–49 200 ton C −1 ). We advise that for inland wetlands, priority should be given to conservation rather than restoration; while for coastal wetlands, both conservation and restoration may be effective techniques for climate change mitigation.
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Sun, Fanglin, and Richard T. Carson. "Coastal wetlands reduce property damage during tropical cyclones." Proceedings of the National Academy of Sciences 117, no. 11 (March 2, 2020): 5719–25. http://dx.doi.org/10.1073/pnas.1915169117.
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Coastal wetlands dampen the impact of storm surge and strong winds. Studies on the economic valuation of this protective service provided by wetland ecosystems are, however, rare. Here, we analyze property damage caused by 88 tropical storms and hurricanes hitting the United States between 1996 and 2016 and show that counties with more wetland coverage experienced significantly less property damage. The expected economic value of the protective effects of wetlands varies widely across coastal US counties with an average value of about $1.8 million/km2per year and a median value of $91,000/km2. Wetlands confer relatively more protection against weaker storms and in states with weaker building codes. Recent wetland losses are estimated to have increased property damage from Hurricane Irma by $430 million. Our results suggest the importance of considering both natural and human factors in coastal zone defense policy.
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Mangan, Tehmina, and Heman D. Lohano. "Impact of Nature-based Tourism on Earnings of Local People: Evidence from Keenjhar Lake in Pakistan." Pakistan Development Review 54, no. 4I-II (December 1, 2015): 963–76. http://dx.doi.org/10.30541/v54i4i-iipp.963-976.
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Nature-based tourism is the fastest growing part of tourism [Kuenzi and McNeely (2008)]. Wetland areas including lakes are an important source of nature-based tourism as tourists like their scenic views and enjoy doing different activities including swimming, canoeing, diving and learning about nature [van der Duim and Henkens (2007)]. Wetlands are amongst the most important ecosystems on Earth and provide numerous goods and services including recreational services [Mitsch and Gosselink (2007)]. Increasing demand for nature-based tourism has raised the importance of wetlands
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Finlayson, C. Max, S. Fennessy, P. Grillas, and R. Kumar. "Commemorating the 50th anniversary of the Ramsar Convention on Wetlands." Marine and Freshwater Research 73, no. 10 (September 14, 2022): i—v. http://dx.doi.org/10.1071/mf22161.
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This issue of Marine and Freshwater Research celebrates 50 years of the Ramsar Convention on Wetlands, which was signed in 1971. It contains papers that describe the development of the Convention and its implementation, including the listing of wetlands of international importance and maintenance of their ecological character. The latter is a fundamental issue for wetland management as illustrated in papers that address a range of management issues, including the impact of climate change, and approaches for building awareness about their values, and concludes with a forward view for potentially reframing human–wetland relationships.
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Waly, Marwa M., Slobodan B. Mickovski, Craig Thomson, and Kingsley Amadi. "Impact of Implementing Constructed Wetlands on Supporting the Sustainable Development Goals." Land 11, no. 11 (November 2, 2022): 1963. http://dx.doi.org/10.3390/land11111963.
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The United Nations Sustainable Development Goals’ (UN SDGs) action call promotes worldwide social, environmental, and economic prosperity. Each country developed a local plan to achieve the SDGs’ objectives and targets. The UN presents an annual global SDG progress report, based on an international indicator framework and regional available data. Wetland ecosystems contribute to the SDGs; however, more research is required to evaluate wetlands’ impact on sustainable development. This study investigates how implementing constructed wetlands (CW) at a local scale can contribute to achieving and promoting the SDGs with application in Kuwait. A preliminary design of a constructed wetlands wastewater treatment system is proposed alongside a local scoring framework based on regional information to assess the future projection of the SDGs in Kuwait. Overall, CW implementation plans contributed positively to improving the level of achievement of SDG 2: Zero Hunger, SDG 3: Good Health, SDG 6: Clean Water, SDG 7: Affordable and Clean Energy, and SDG 15: Life on Land. The analysis also highlights synergies that need to be considered for integrated environmental governance and enhanced policy coherence for Kuwait’s sustainable development management.
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Dallyn, Sherree. "Managing Risks to Wetlands Through Low Impact Response Methods and Ecological Approaches." International Oil Spill Conference Proceedings 2017, no. 1 (May 1, 2017): 000431. http://dx.doi.org/10.7901/2169-3358-2017.1.000431.
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Canada's petroleum hydrocarbon pipeline network extends for approximately 830,000 kilometres1. These pipelines carry a variety of refined and non-refined products including, natural gas liquids, heavy oil, synthetic oil, diluent, produced water, etc. With over 14%2 of Canada consisting of wetlands, the potential for pipeline releases to significantly impact these important ecosystems is considerable. Containment, recovery and remediation of wetlands is very complex. Historically, these ecosystems were drained, excavated and then sometimes backfilled, or hydraulically altered to accommodate water recovery and disposal. SWAT Consulting Inc. employs a number of low impact technologies, practices and strategies to contain and recover spilled fluids from wetlands using Net Environmental Benefit Analysis (NEBA) as a tool for restoration and or enhancement while balancing the ecological integrity of the wetland system. SWAT's low impact objectives focus on environmental integrity throughout every aspect of the release, from response to recovery and restoration. After determining the unique components to each wetland ecosystem, SWAT customizes low impact techniques to access the site, contain the spill, remove contaminants and restore the ecosystem. SWAT has implemented numerous low impact spill response, recovery and remediation techniques throughout North America. In this presentation, SWAT presents various case studies from spills into different types of wetlands. In these case studies, the contaminants of concern were contained and removed from the ecosystems using these low impact methods without sacrificing ecological integrity. We will discuss methods to access targeted recovery points, in-situ biodegradable containment systems, focused recovery based on examining contaminant interaction with specific environmental components and enhanced bioremediation applications. By comparing laboratory verified data, electromagnetic surveys and other assessment information from these ecosystems, SWAT will demonstrate a drastic reduction in contaminants, and an overall regeneration and restoration of function in these ecosystems.
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Chandler, Houston C., J. Checo Colón-Gaud, Thomas A. Gorman, Khalil Carson, and Carola A. Haas. "Does long-term fire suppression impact leaf litter breakdown and aquatic invertebrate colonization in pine flatwoods wetlands?" PeerJ 9 (November 29, 2021): e12534. http://dx.doi.org/10.7717/peerj.12534.
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Ephemeral wetlands are commonly embedded within pine uplands of the southeastern United States. These wetlands support diverse communities but have often been degraded by a lack of growing-season fires that historically maintained the vegetation structure. In the absence of fire, wetlands develop a dense mid-story of woody vegetation that increases canopy cover and decreases the amount of herbaceous vegetation. To understand how reduced fire frequency impacts wetland processes, we measured leaf litter breakdown rates and invertebrate communities using three common plant species (Longleaf Pine (Pinus palustris), Pineland Threeawn Grass (Aristida stricta), and Black Gum (Nyssa sylvatica)) that occur in pine flatwoods wetlands located on Eglin Air Force Base, Florida. We also tested whether or not the overall habitat type within a wetland (fire maintained or fire suppressed) affected these processes. We placed leaf packs containing 15.0 g of dried leaf litter from each species in both fire-maintained and fire-suppressed sections of three wetlands, removing them after 103–104 days submerged in the wetland. The amount of leaf litter remaining at the end of the study varied across species (N. sylvatica = 7.97 ± 0.17 g, A. stricta = 11.84 ± 0.06 g, and P. palustris = 11.37 ± 0.07 g (mean ± SE)) and was greater in fire-maintained habitat (leaf type: F2,45 = 437.2, P < 0.001; habitat type: F1,45 = 4.6, P = 0.037). We identified an average of 260 ± 33.5 (SE) invertebrates per leaf pack (range: 19–1,283), and the most abundant taxonomic groups were Cladocera, Isopoda, Acariformes, and Diptera. Invertebrate relative abundance varied significantly among litter species (approximately 39.9 ± 9.4 invertebrates per gram of leaf litter remaining in N. sylvatica leaf packs, 27.2 ± 5.3 invertebrates per gram of A. stricta, and 14.6 ± 3.1 invertebrates per gram of P. palustris (mean ± SE)) but not habitat type. However, both habitat (pseudo-F1,49 = 4.30, P = 0.003) and leaf litter type (pseudo-F2,49 = 3.62, P = 0.001) had a significant effect on invertebrate community composition. Finally, this work was part of ongoing projects focusing on the conservation of the critically imperiled Reticulated Flatwoods Salamander (Ambystoma bishopi), which breeds exclusively in pine flatwoods wetlands, and we examined the results as they relate to potential prey items for larval flatwoods salamanders. Overall, our results suggest that the vegetation changes associated with a lack of growing-season fires can impact both invertebrate communities and leaf litter breakdown.
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Frau, Diego, Brendan J. Moran, Felicity Arengo, Patricia Marconi, Yamila Battauz, Celeste Mora, Ramiro Manzo, Gisela Mayora, and David F. Boutt. "Hydroclimatological Patterns and Limnological Characteristics of Unique Wetland Systems on the Argentine High Andean Plateau." Hydrology 8, no. 4 (November 3, 2021): 164. http://dx.doi.org/10.3390/hydrology8040164.
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High-elevation wetlands in South America are not well described despite their high sensitivity to human impact and unique biodiversity. We describe the hydroclimatological and limnological characteristics of 21 wetlands on the High Andean Plateau of Argentina, synthesizing information gathered over ten years (2010–2020). We collected physical-chemical, phytoplankton, and zooplankton data and counted flamingos in each wetland. We also conducted an extensive analysis of climatic patterns and hydrological responses since 1985. These wetlands are shallow, with a wide range of salinity (from fresh to brine), mostly alkaline, and are dominated by carbonate and gypsum deposits and sodium-chloride waters. They tend to have high nutrient concentrations. Plankton shows a low species richness and moderate to high dominance of taxa. Flamingos are highly dependent on the presence of Bacillariophyta, which appears to be positively linked to silica and soluble reactive phosphorus availability. Climatic conditions show a strong region-wide increase in average air temperature since the mid-1980s and a decrease in precipitation between 1985–1999 and 2000–2020. These high-elevation wetlands are fundamentally sensitive systems; therefore, having baseline information becomes imperative to understanding the impact of climatic changes and other human perturbations. This work attempts to advance the body of scientific knowledge of these unique wetland systems.
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Shi, Sixue, Yu Chang, Yuehui Li, Yuanman Hu, Miao Liu, Jun Ma, Zaiping Xiong, Ding Wen, Binglun Li, and Tingshuang Zhang. "Using Time Series Optical and SAR Data to Assess the Impact of Historical Wetland Change on Current Wetland in Zhenlai County, Jilin Province, China." Remote Sensing 13, no. 22 (November 10, 2021): 4514. http://dx.doi.org/10.3390/rs13224514.
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Wetlands, as the most essential ecosystem, are degraded throughout the world. Wetlands in Zhenlai county, with the Momoge National Nature Reserve, which was included on the Ramsar list, have degraded by nearly 30%. Wetland degradation is a long-term continuous process with annual or interannual changes in water area, water level, or vegetation presence and growth. Therefore, it requires sufficiently frequent and high-spatial-resolution data to represent its dynamics. This study mapped yearly land-use maps with 30-m resolution from 1985 to 2018 using Landsat data in Google Earth Engine (GEE) to explore the wetland degradation process and mapped 12-day interval land-use maps with 15-m resolution using the Sentinel-1B and Sentinel-2 data in GEE and other assistant platforms to study the characteristics of wetland dynamics in 2018. Four sets of maps were generated using Sentinel-1B (S1), Sentinel-2 (S2), the combination of Sentinel-1B and Sentinel-2 (S12), and S12 with multitemporal remote sensing (S12’). All of the classifications were performed in the Random Forest Classification (RFC) method using remote sensing indicators. The results indicate that S12’ was the most accurate. Then, the impact of the historic land-use degradation process on current wetland change dynamics was discussed. Stable, degradation, and restoration periods were identified according to the annual changes in wetlands. The degraded, stable, restored, and vulnerable zones were assessed based on the transformation characteristics among wetlands and other land-use types. The impact of historical land-use trajectories on wetland change characteristics nowadays is diverse in land-use types and distributions, and the ecological environment quality is the comprehensive result of the effect of historical land-use trajectories and the amount of rainfall and receding water from paddy fields. This study offers a new method to map high-spatiotemporal-resolution land-use (S12’) and addresses the relationship between historic wetland change characteristics and its status quo. The findings are also applicable to wetland research in other regions. This study could provide more detailed scientific guidance for wetland managers by quickly detecting wetland changes at a finer spatiotemporal resolution.