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Добірка наукової літератури з теми "Wetland"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 8 листопада 2024

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Статті в журналах з теми "Wetland"

Berninger, Kati, Jari Koskiaho, and Sirkka Tattari. "Constructed wetlands in Finnish agricultural environments: balancing between effective water protection, multi-functionality and socio-economy / Małe sztuczne zbiorniki wodne w krajobrazie rolniczym Finlandii: ochrona jakości wody na tle wielozadaniowych funkcji tych zbiorników i aspektów socjalno-ekonomicznych." Journal of Water and Land Development 17, no. 1 (December 1, 2012): 19–29. http://dx.doi.org/10.2478/v10025-012-0029-5.

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Abstract This case study summarizes the current knowledge in Finland on the efficiency of constructed wetlands to improve water quality at the same time providing multiple benefits. The efficiency is highly dependent on the wetland’s relative size compared to the upstream catchment area, and on the amount of agricultural land in the upstream catchment. The case study analyses the incentives designed to motivate landowners to construct wetlands in Finland such as the non-productive investment support and the agri-environment payment support for wetland management. Farmers think that the support system is heavy and bureaucratic, and thus the target number of new constructed wetlands is far from being met. Individual projects have been more successful in wetland construction than the official support system. General wetland plans drafted for hotspot areas is an example of enabling factors and strict eligibility rules form one of the barriers of wetland construction identified in this case study. In spite of the criticism of the current wetland incentives, a support system for wetland construction is needed. One option would be to give regional authorities more freedom to select priority areas according to e.g. River Basin Management Plans.

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Higgins, James, and Michael Maclean. "Technical Note — The Use of a Very Large Constructed Sub-Surface Flow Wetland to Treat Glycol-Contaminated Stormwater from Aircraft De-Icing Operations." Water Quality Research Journal 37, no. 4 (November 1, 2002): 785–92. http://dx.doi.org/10.2166/wqrj.2002.053.

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Abstract All of the pollutants found in stormwater runoff at airports, including surface and aircraft de-icing/anti-icing glycols, can be treated and removed to low levels in well-designed sub-surface flow (SSF) constructed wetland systems. There are two common forms of constructed wetlands used for pollution control: those where water flows over the surface among wetland plants (free water surface or marsh type wetlands); and SSF types where the wastewater flows below the normally dry surface of a gravel substrate in which the wetland plants grow. SSF wetlands have no open water to attract waterfowl and are particularly suitable for use at airports. Of the glycol used at Edmonton International Airport (EIA), 80 to 90% eventually entered surface runoff. Edmonton International Airport's operator, the Edmonton Regional Airports Authority (Edmonton Airports) evaluated a number of glycol management options, including constructed wetlands. As a result, a very large SSF wetland system was installed to handle glycol-contaminated stormwater. This paper reviews results of a feasibility study carried out to define design parameters and scale up kinetics for this wetland system, the detailed design that resulted, the SSF wetland's construction, and the start-up of the Edmonton facilities in August of 2000. It also compares the Edmonton wetland system with a similar facility at Heathrow Airport in the United Kingdom.

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Peng, Yan Dong, and Jing Yue Wang. "Study on the Loss and Degradation and Sustainable Development Countermeasures of the Coastal Wetlands in Qinhuangdao." Applied Mechanics and Materials 361-363 (August 2013): 1016–19. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.1016.

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Qinhuangdao coastal wetland is the distribution of China's most representative of the sandy coastal wetlands, and its main wetland types are sandy coast wetland, rocky coast wetland, estuarine wetland, lake wetland, shallow sea wetland and artificial wetland. Under the influence of natural factors and human factors, coastal wetlands degradation constantly. Land reclamation, city and port development, pollution, coastal erosion and excessive use of coastal biologic resource are considered as the main factors to the degradation of the coastal wetlands. Based on the analysis the main factors contributing to the loss and degradation of the coastal wetlands and the characteristics of wetland degradation, sustainable development countermeasures are suggested in this paper.

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Gil-Márquez, José Manuel, Bartolomé Andreo, and Matías Mudarra. "Comparative Analysis of Runoff and Evaporation Assessment Methods to Evaluate Wetland–Groundwater Interaction in Mediterranean Evaporitic-Karst Aquatic Ecosystem." Water 13, no. 11 (May 25, 2021): 1482. http://dx.doi.org/10.3390/w13111482.

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This work compares the applicability of several free-surface evaporation and runoff equations in simulating water level variations of small Mediterranean wetlands. The Amarga and Jarales wetland are two pilot sites with an evaporite-karst genesis located in southern Spain. The water level was continuously recorded in both wetlands, and exhaustive weather monitoring was performed. The combined datasets have permitted quantification of the surficial elements of their water budget (precipitation, runoff, and evaporation). Several campaigns of groundwater level measurements were also done to characterize the direction of groundwater flows. The morphometrical analysis of the Jarales wetland was accurately performed based on a LiDAR dataset. A total of 225 limnimetric simulations of the Jarales (90) and Amarga (135) wetlands were performed, combining different evaporation and runoff equations. During the study period, the curve number method, coupled with the Penman equation, reached the Jarales wetland’s best calibrations. The Vardavas–Fountoulakis modification of the Penman model fit better with the Amarga wetland record. The obtained results permit specification of the water budget of both wetlands during several years and confirm that the groundwater–surface water relationship affects the wetland hydric dynamic to different degrees. Nonetheless, the limnimetric models were calibrated for a short period, including dry years, making it necessary to extend the control period longer and validate the models under different hydroclimatic conditions. Finally, the differences between wetland functioning are explained in a conceptual hydrological model that can be useful for wetland conservation and management of related aquatic ecosystems. The understanding of the origin and fate of water in wetlands permits assessment of how future scenarios would affect hydric functioning and suggests adequate conservation measurements.

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Boutilier, Leah, Rob Jamieson, Robert Gordon, and Craig Lake. "Transport of Lithium Tracer and E. coli in Agricultural Wastewater Treatment Wetlands." Water Quality Research Journal 43, no. 2-3 (May 1, 2008): 137–44. http://dx.doi.org/10.2166/wqrj.2008.017.

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Abstract Agricultural waste must be managed effectively to protect surface and groundwater resources, as well as human health. Constructed wetlands can provide a low-cost environmentally acceptable method for the treatment of agricultural wastewater. An ionic tracer (Lithium chloride [LiCl]) and a biotracer (a naladixic acid-resistant strain of Escherichia coli) were injected into six pilot-scale constructed wetlands treating dairy wastewater: three surface-flow (SF) wetlands and three subsurfaceflow (SSF) wetlands. Each wetland was 3.9-m long and 1.7-m wide. Residence time distribution functions were calculated for each wetland to investigate the hydraulic behaviour of each system during winter and summer conditions. During the summer study, the mean residence times for SF wetlands 2, 4, and 6 were 12, 16, and 14 days, respectively, while the mean residence time for SSF wetlands 1, 3, and 5 were 23, 18, and 22 days, respectively. The longitudinal dispersion coefficients were in the order of 10-6 m2 s-1 for each wetland during the summer and winter. The mean residence time for SF wetlands 2, 4, and 6 during the winter study were 8, 10, and 10 days, respectively, while the mean residence time for SSF wetlands 1, 3, and 5 were 8, 9, and 10 days, respectively. E. coli effluent peaks often occurred prior to Li peaks, suggesting that bacteria may be motile within the wetland environment. This study suggests that dispersion is an important mass transport process in both SF and SSF wetlands. Long-term operation of SF and SSF treatment wetlands may cause reduced retention times and treatment efficiency due to organic matter accumulation and channelling. Cold winter temperatures may also increase the survival of bacteria within treatment wetland systems, decreasing the wetland's ability to reduce bacteria concentrations during the winter months.

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King, Andrew C., Cynthia A. Mitchell, and Tony Howes. "Hydraulic tracer studies in a pilot scale subsurface flow constructed wetland." Water Science and Technology 35, no. 5 (March 1, 1997): 189–96. http://dx.doi.org/10.2166/wst.1997.0195.

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Current design procedures for Subsurface Flow (SSF) Wetlands are based on the simplifying assumptions of plug flow and first order decay of pollutants. These design procedures do yield functional wetlands but result in over-design and inadequate descriptions of the pollutant removal mechanisms which occur within them. Even though these deficiencies are often noted, few authors have attempted to improve modelling of either flow or pollutant removal in such systems. Consequently the Oxley Creek Wetland, a pilot scale SSF wetland designed to enable rigorous monitoring, has recently been constructed in Brisbane, Australia. Tracer studies have been carried out in order to determine the hydraulics of this wetland prior to commissioning it with settled sewage. The tracer studies will continue during the wetland's commissioning and operational phases. These studies will improve our understanding of the hydraulics of newly built SSF wetlands and the changes brought on by operational factors such as biological films and wetland plant root structures. Results to date indicate that the flow through the gravel beds is not uniform and cannot be adequately modelled by a single parameter, plug flow with dispersion, model. We have developed a multiparameter model, incorporating four plug flow reactors, which provides a better approximation of our experimental data. With further development this model will allow improvements to current SSF wetland design procedures and operational strategies, and will underpin investigations into the pollutant removal mechanisms at the Oxley Creek Wetland.

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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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Li, Yangli, Gaoyuan Wang, Tian Chen, and Erli Zeng. "Spatial Planning Strategies for Wetlands Based on a Multimethod Approach: The Example of Tianjin in China." Water 15, no. 19 (September 25, 2023): 3356. http://dx.doi.org/10.3390/w15193356.

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Wetlands form a crucial component of ecosystems, and wetland restoration serves as an effective strategy for promoting sustainable urban development. Spatial support is essential for wetland restoration, meaning that research on wetland spatial planning is of considerable importance. Existing studies on wetland spatial planning primarily focus on the analysis of wetland spatial distribution characteristics, with limited exploration of wetland spatial relationships. This paper aims to explore the potential of utilizing both spatial distribution characteristics and spatial relationships to identify wetland spatial issues, thereby facilitating the formulation of wetland spatial planning strategies. Using Tianjin City as a case study, this research applies nearest neighbor analysis, the geographic concentration index, the Gini index, and kernel density analysis to identify the spatial distribution characteristics of wetlands in Tianjin. Additionally, spatial autocorrelation analysis and connectivity analysis are employed to identify the interrelationships among wetlands in Tianjin. Based on the results derived from the analysis of spatial distribution characteristics and spatial relationships, wetland spatial planning strategies are proposed. The effectiveness of these strategies is validated using methods that consider both spatial distribution characteristics and spatial relationships. The findings reveal that, although wetlands in Tianjin are widely distributed, large wetland patches are primarily concentrated in areas with abundant water resources, while the six districts within the city have few or no large patches of wetlands. The spatial distribution of wetlands is highly uneven, exhibiting patterns of high–high aggregation and low–low aggregation. The number of connecting paths between wetland patches is relatively low, indicating a generally low overall connectivity. While medium-sized and larger wetland patches maintain the connectivity of existing wetlands in Tianjin, small wetlands that serve as stepping stones are lacking. Following the implementation of planning strategies, there would be an increase in the wetland area in Tianjin, accompanied by significant improvements in the spatial distribution pattern and spatial relationships of the wetlands.

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Guo, Ziliang, Weiwei Liu, Manyin Zhang, Yuguang Zhang, and Xiaoyu Li. "Transforming the wetland conservation system in China." Marine and Freshwater Research 71, no. 11 (2020): 1469. http://dx.doi.org/10.1071/mf19383.

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Wetland conservation has gradually improved worldwide. In situ conservation is effective in protecting valuable wetlands. Here, we review the expansion, reformation and problems associated with wetland conservation in China. The wetland conservation system in China comprises a wetland protected area network (nature reserves, wetland parks, urban wetland parks, aquatic germplasm reserves and special marine reserves) and a wetland grading system. Following rapid expansion, national wetland protected areas cover 4.78% of the country. At the same time, a wetland grading system that categorises the importance of wetlands has expanded to 13 provinces. However, reforming wetlands, including improving the role of wetlands, adjusting departmental responsibility, reforming conservation systems and implementing comprehensive wetland conservation regimes, is somewhat arduous and complicated at present. Although these changes have contributed to wetland conservation in China, the wetland conservation system still faces considerable problems because of a lack of uniform and efficient regulations. Management functions and spatial scope overlap in different systems, and there is a disconnect between resource management and law enforcement. A unified legal system and wetland identity cards should be established, with stronger law enforcement. Synergy between wetland conservation systems should improve, innovative wetland conservation mechanisms should be used and better coordination among different protection systems is needed.

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Mitchell, Todd. "Native Uses of Wetlands and Natural Resources Planning: The Swinomish Indian Tribal Community's Wetlands Cultural Assessment." Practicing Anthropology 27, no. 1 (January 1, 2005): 11–14. http://dx.doi.org/10.17730/praa.27.1.0m16543050n28544.

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Wetlands are defined based upon the presence of three essential characteristics: hydrophytic vegetation; hydric soils; and wetland hydrology. Wetland inventory and wetland habitat assessments are conducted in areas where wetlands need to be identified and ranked for regulatory protection measures. Typically the following methods are used: 1) identify wetlands through existing resources and produce a preliminary wetland inventory, 2) field verify wetlands, 3) assess wetland functions and values, and 4) develop watershed ranking. In order to evaluate and assess the relative importance or level to which a wetland performs a specific function, a functional assessment of the field-verified wetlands is conducted. Detailed scientific knowledge of wetland functions, sometimes known as functions and values, is often limited, so that evaluations of the functions of individual wetlands are qualitative and largely dependent upon professional judgment. Wetland functional valuations are still an evolving science. Therefore, better methods for valuations are being researched but until such methods are in general use by the scientific research community, the current and possibly inaccurate methods are in use.

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Дисертації з теми "Wetland"

Lin, Wai-tung. "Created wetlands in Shing Mun River, Sha Tin." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25950861.

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Johnson, Patricia Ann. "The status of freshwater compensatory wetland migration in Washington State." Online pdf file accessible through the World Wide Web, 2004. http://archives.evergreen.edu/masterstheses/Accession86-10MES/Johnson_PAMESThesis2004.pdf.

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Balcombe, Collins K. "An evaluation of vegetation and wildlife communities in mitigation and natural wetlands of West Virginia." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2857.

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Thesis (M.S.)--West Virginia University, 2003.
Title from document title page. Document formatted into pages; contains xx, 417 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references.

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Krzys, Bethaney L. "Remote identification of wetlands in Mahoning and Trumbull County, Ohio." [Kent, Ohio] : Kent State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1227650462.

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Thesis (M.A.)--Kent State University, 2008.
Title from PDF t.p. (viewed Dec. 22, 2009). Advisor: Mandy Munro-Stasiuk. Keywords: remote sensing, wetland, wetland identification, GIS. Includes bibliographical references (p. 158-161).

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Holt, Courtney R. Folkerts Debbie R. "A floristic study of Weaver Creek Wetland, Santa Rosa County, Florida." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Biological_Sciences/Thesis/Holt_Courtney_38.pdf.

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Ryan, Christopher R. "Geotechnical investigation of Montrose wetland site." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3723.

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Thesis (M.S.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains xii, 191 p. : ill. (some col.), maps (some col.). Vita. Includes abstract. Includes bibliographical references (p. 117-119).

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Sherrill, Ursula Rose. "The restoration of wetland functions at the Rio Bosque Wetlands Park in El Paso, Texas, USA." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2007. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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Alsfeld, Amy J. "The effects of amendments and landscape position on the biotic community of constructed depressional wetlands." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 118 p, 2007. http://proquest.umi.com/pqdlink?did=1251902791&Fmt=7&clientId=79356&RQT=309&VName=PQD.

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Chan, Chung-san. "The future of the Deep Bay Wetlands, Hong Kong /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18735927.

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Clouston, Elizabeth M. "Linking the ecological and economic values of wetlands a case study of the wetlands of Moreton Bay /." Connect to this title online, 2002. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030828.140330/.

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Книги з теми "Wetland"

Garbisch, Edgar W. Highways & wetlands: Compensating wetland losses. Washington, D.C: U.S. Dept. of Transportation, Federal Highway Administration, Offices of Research & Development, 1986.

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Garbisch, Edgar W. Highways & wetlands: Compensating wetland losses. Washington, D.C: U.S. Dept. of Transportation, Federal Highway Administration, Offices of Research & Development, 1986.

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Garbisch, Edgar W. Highways & wetlands: Compensating wetland losses. Washington, D.C: U.S. Dept. of Transportation, Federal Highway Administration, Offices of Research & Development, 1986.

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Garbisch, Edgar W. Highways & wetlands: Compensating wetland losses. Washington, D.C: U.S. Dept. of Transportation, Federal Highway Administration, Offices of Research & Development, 1986.

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Garbisch, Edgar W. Highways & wetlands: Compensating wetland losses. Washington, D.C: U.S. Dept. of Transportation, Federal Highway Administration, Offices of Research & Development, 1986.

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Zinn, Jeffrey A. Wetland issues. [Washington, D.C.]: Congressional Research Service, Library of Congress, 2003.

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Claudia, Copeland, and Library of Congress. Congressional Research Service., eds. Wetland issues. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1997.

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Zinn, Jeffrey A. Wetland issues. [Washington, D.C.]: Congressional Research Service, Library of Congress, 2000.

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VanDeWalle, Terry J. Evaluation of the Iowa Department of Transportation's compensatory wetland mitigation program. [Ames, Iowa: Iowa Dept. of Transportation], 2004.

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Group, Malaysian Wetland Working, ed. Malaysian wetland directory. Kuala Lumpur, (Malaysia): Dept. of Wildlife and National Parks, Peninsular Malaysia, 1987.

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Частини книг з теми "Wetland"

Vest, Josh L., David A. Haukos, Neal D. Niemuth, Casey M. Setash, James H. Gammonley, James H. Devries, and David K. Dahlgren. "Waterfowl and Wetland Birds." In Rangeland Wildlife Ecology and Conservation, 417–69. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34037-6_13.

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AbstractThe future of wetland bird habitat and populations is intrinsically connected with the conservation of rangelands in North America. Many rangeland watersheds are source drainage for some of the highest functioning extant wetlands. The Central and Pacific Flyways have significant overlap with available rangelands in western North America. Within these flyways, the importance of rangeland management has become increasingly recognized by those involved in wetland bird conservation. Within the array of wetland bird species, seasonal habitat needs are highly variable. During the breeding period, nest survival is one of the most important drivers of population growth for many wetland bird species and rangelands often provide quality nesting cover. Throughout spring and fall, rangeland wetlands provide key forage resources that support energetic demands needed for migration. In some areas, stock ponds developed for livestock water provide migration stopover and wintering habitat, especially in times of water scarcity. In the Intermountain West, drought combined with water demands from agriculture and human population growth are likely headed to an ecological tipping point for wetland birds and their habitat in the region. In the Prairie Pothole Region, conversion of rangeland and draining of wetlands for increased crop production remains a significant conservation issue for wetland birds and other wildlife. In landscapes dominated by agricultural production, rangelands provide some of the highest value ecosystem services, including water quality and wetland function. Recent research has shown livestock grazing, if managed properly, is compatible and at times beneficial to wetland bird habitat needs. Either directly, or indirectly, wetland bird populations and their habitat needs are supported by healthy rangelands. In the future, rangeland and wetland bird managers will benefit from increased collaboration to aid in meeting ultimate conservation objectives.

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Kiker, Clyde F., and Gary D. Lynne. "Wetland Values and Valuing Wetlands." In Ecology and Management of Tidal MarshesA Model from the Gulf of Mexico, 259–76. Boca Raton: CRC Press, 2024. http://dx.doi.org/10.1201/9781003579113-11.

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Butt, Maryam Akram, Muhammad Zafar, Mushtaq Ahmed, Shabnum Shaheen, and Shazia Sultana. "Wetland and Wetland Plants." In Wetland Plants, 1–15. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69258-2_1.

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Tatu, Ketan S., and James T. Anderson. "Wetland Creation: A Strategy for Mitigating Wetland Loss by Restoring Wetlands to Landscapes." In Wetland Science, 491–500. New Delhi: Springer India, 2017. http://dx.doi.org/10.1007/978-81-322-3715-0_25.

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Tatu, Ketan S., and James T. Anderson. "An Introduction to Wetland Science and South Asian Wetlands." In Wetland Science, 3–30. New Delhi: Springer India, 2017. http://dx.doi.org/10.1007/978-81-322-3715-0_1.

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Butt, Maryam Akram, Muhammad Zafar, Mushtaq Ahmed, Shabnum Shaheen, and Shazia Sultana. "Types of Wetland and Wetland Plants." In Wetland Plants, 35–54. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69258-2_3.

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Dini, John, and Umesh Bahadur. "South Africa’s National Wetland Rehabilitation Programme: Working for Wetlands." In The Wetland Book, 1–7. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-007-6172-8_145-2.

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Clewley, Daniel. "Remote Sensing of Wetland Types: Arctic and Boreal Wetlands." In The Wetland Book, 1–7. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-007-6172-8_312-2.

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Dini, John A., and Umesh Bahadur. "South Africa’s National Wetland Rehabilitation Programme: Working for Wetlands." In The Wetland Book, 691–97. Dordrecht: Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-90-481-9659-3_145.

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Clewley, Daniel. "Remote Sensing of Wetland Types: Arctic and Boreal Wetlands." In The Wetland Book, 1635–40. Dordrecht: Springer Netherlands, 2018. http://dx.doi.org/10.1007/978-90-481-9659-3_312.

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Тези доповідей конференцій з теми "Wetland"

Lian, Zheng, Yu Liu, Jin-Zhong Li, and Zheng-Long Jiang. "Spatial Distribution of Wetland Plants of Saltmarsh Wetlands and its Dem Dependence—Taking Yancheng Wetland in China as an Example." In IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium, 5512–15. IEEE, 2024. http://dx.doi.org/10.1109/igarss53475.2024.10640771.

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Anokye, Matilda, Mulham Fawakherji, and Leila Hashemi-Beni. "Flood Resilience Through Advanced Wetland Prediction." In IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium, 5516–20. IEEE, 2024. http://dx.doi.org/10.1109/igarss53475.2024.10641585.

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Smrekar, Aleš, and Katarina Polajnar Horvat. "IMPLEMENTING PARTICIPATORY GOVERNANCE IN WETLAND MANAGEMENT: THE SEČOVLJE SALINA NATURE PARK, SLOVENIA." In Book of Abstracts and Contributed Papers, 49–50. Geographical Institute "Jovan Cvijić" SASA, 2024. http://dx.doi.org/10.46793/csge5.30as.

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Wetlands are dynamic ecosystems with significant ecological, social, and economic importance, often facing degradation due to human activities. The study introduces the concept of a Wetland Contract, a voluntary agreement aimed at ensuring sustainable wetland management through stakeholder participation. The Sečovlje Salina Nature Park serves as a case study to demonstrate this approach. The study follows a structured methodology comprising two main stages: preparation and implementation. The preparation stage includes analyzing the regulatory framework, describing the pilot area, and conducting a stakeholder analysis. The implementation stage involves organizing Territorial Labs, scenario planning, and developing the Wetland Contract. The Territorial Labs were public meetings designed to establish participatory governance, adapted to an online format due to the COVID-19 pandemic. The project targeted around 200 potential stakeholders in the hinterland of Sečovlje Salina Nature Park, with 34 participating in the Territorial Labs and 16 signing the Memorandum of Understanding (MoU). The MoU, a less binding form of the Wetland Contract, focused on systematic cross-sectoral participation to address conflicts between stakeholders with varying interests. The study highlighted the importance of stakeholder education and engagement, revealing that many stakeholders had limited knowledge and experience with inclusive governance processes. The study encountered challenges such as stakeholder unfamiliarity with the Wetland Contract concept and limited digital access, which excluded some groups from participation. Despite these obstacles, the participatory approach successfully facilitated dialogue and cooperation among stakeholders, demonstrating potential for broader applications in wetland governance. The study concludes that the Wetland Contract method, implemented through a participatory and inclusive approach, can effectively enhance wetland management. The Sečovlje Salina Nature Park case study illustrates the method’s potential to reconcile environmental protection with economic and social interests. The methodology’s adaptability to different contexts and its emphasis on stakeholder involvement make it a promising model for wetland governance in various regions.

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GRINBERGA, Linda, and Ainis LAGZDINS. "NUTRIENT RETENTION IN SURFACE FLOW CONSTRUCTED WETLAND IN AGRICULTURAL LAND IN LATVIA." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.179.

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The research site consists of a pilot-scale surface flow constructed wetland at the farm Mezaciruli located in Zalenieki County, Jelgava Region, in the middle part of Latvia. The constructed wetland was installed in June 2014 to improve water quality in agricultural catchment and examine nutrient retention at the constructed wetland receiving surface and drainage runoff. The constructed wetland’s surface area of 0.37 ha corresponds to 0.5 % of the total catchment area. During the observation period of 32 months (2014-2017) water quality parameters such as total suspended solids (TSS), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), total nitrogen (TN), orthophosphate-phosphorus (PO4-P), and total phosphorus (TP) were monitored twice a month using a grab sample approach. Retention efficiency for monitored water quality parameters was calculated based on their concentrations at the inlet and outlet. The monitoring results obtained during this study showed a reduction within the constructed wetland for all examined parameters. The concentrations of NO3-N, NH4-N and TN were reduced on average by 13 %, 15 % and 16 %, respectively. PO4-P and TP concentrations were reduced on average by 38 % and 36 %, respectively. Total suspended solids were reduced by 31% at the outlet of the constructed wetland. However, in some cases, an increase in nutrient concentrations in water leaving the constructed wetland was observed. Therefore, there is a need for further research to investigate causes of such increase.

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Das, Nirupam, and Surabhi Mehrotra. "Wetlands in Urban Contexts: A Case of Bhoj Wetland." In IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2021. http://dx.doi.org/10.1109/igarss47720.2021.9554693.

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Shahkhali, Seyede Mohadese Hatami, Shahram Sharifi Hashjin, Farzane Nasiri Jan Agha, and Habib Mahmoodi Chenari. "Factors Affecting Land Use Change Around the Anzali Wetland and the Challenges Ahead." In 3rd International Congress on Engineering and Life Science. Prensip Publishing, 2023. http://dx.doi.org/10.61326/icelis.2023.3.

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Changes in land use and destruction of natural covers lead to disturbances in the ecosystem and a decrease in biodiversity. In recent years, climate change, agricultural, industrial, and tourism activities, land use changes around the wetland, and the occurrence of eutrophication phenomena have brought this valuable ecosystem to the brink of destruction. The Anzali wetland complex is located near the city of Bandar Anzali in Guilan province in northern Iran, along the southern coast of the Caspian Sea. The aim of this study is to identify and monitor changes in land use over the past two decades, as well as to determine and analyze the influential factors on land use changes around the Anzali wetland in order to develop management plans to reduce the negative effects of land use changes by providing logical solutions to prevent economic, social, environmental, and livelihood damages in this area. In this study, by preparing a land use map of a 20-year period of the study area and modeling land use and cover changes in the Anzali wetland basin, effective parameters in land use changes were identified, analyzed, and introduced. This study has depicted land use changes from 2000 to 2020. The images are classified into agricultural lands, wetlands, forests, water bodies, residential areas, and barren lands. Landsat images from 2000, 2008, and 2020 were used. The outputs of the processing are LULC images, which show the extent of land use changes based on the information obtained from these images. The results of the spatial image comparison show that in the period of 2000-2020, wetland areas have changed by -29.3%, grasslands by 37.4%, agricultural lands by 15%, residential lands by 183%, forests by 40.1%, water bodies by -28.4%, and barren lands by 15.1%. Finally, the villages around the wetland, which have undergone the most changes, were identified.

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Vargova, Alena, and Marian Vertal. "From the wetland to the wetland roof." In 14TH CONFERENCE OF CIVIL AND ENVIRONMENTAL ENGINEERING FOR PHD STUDENTS AND YOUNG SCIENTISTS: YOUNG SCIENTIST 2022 (YS22). AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0158698.

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FU, Dong, Cheng-Duan WANG, Xin-Lie FU, and Xia WAN. "A new constructed wetland —vertical hybrid constructed wetland." In 2016 International Workshop on Material Science and Environmental Engineering (IWMSEE2016). WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789813143401_0041.

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Zhang, Ning, and Weihao Wang. "Investigation of Water pH in Calcasieu Lake Area Using Regional Scale Hydrodynamic Models." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69208.

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In Southwest Louisiana, the Calcasieu Lake and surrounding water systems are the major fresh water sources to the nearby coastal wetlands and agricultural areas. There are two national wide life refuges located in both east and west sides of Calcasieu Lake. Both refuges are covered by coastal wetlands. The health of the wetland vegetation is essential to the wetland losses in the area. One of the major problems related to the health of marshes is the nutrient deficiency. In addition, the surface water system is a possible source for agriculture use that requires sufficient nutrient components in water. Understanding the transport and distribution of various nutrients in the coastal water system is very important to the above-mentioned issues. In this study, a regional scale hydrodynamic model was utilized to simulate the hydrodynamics, salinity transport and sediment transport in this major water system in Southwest Louisiana. The pH distribution in water is a good indication of many nutrient components, such as phosphorous, and is essential to understand the nutrient distributions in the target area. A pH calculation procedure was implemented in the model to determine pH values based on the salinity and other water properties. The model results can be used to indicate the dynamic change of nutrient distributions and the areas of nutrient deficiency.

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Dudel, Ernst Gert, Carsten Brackhage, Claudia Clemens, Holger Dienemann, Martin Mkandawire, Joachim Rotsche, and Arndt Weiske. "Principles and Limitations for Natural Attenuation of Radionuclides in Former Uranium Mining and Milling Sites." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1260.

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Abstract Development of a self-sustainable remediation process seems to require an approach that uses the entire ecosystem functions. Selected effects have been documented in four case studies both in forests and wetlands: I) In the course of vegetation and soil development on experimental plots forested since 1963, concentration of RNs was reduced from >1000 Bq/kg to <200 Bq/kg in the top soil due to dilution by accumulation of organic carbon; II) in the stem wood of spruce and alder as few as 13–54 mg U/ha had been fixed; III) wetland compartments acted as strong sinks (> 1000 Bq/kg in organic matter); IV) water quality below a natural wetland — working as a filter within an uranium mineralisation hot spot in Malawi (SE-Africa) (> 2000 Bq/kg soil) — demonstrated no difference to a reference brook within the catchment.

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Звіти організацій з теми "Wetland"

Stimmel, Elisabeth, Peter Goodwin, and Diane Menuz. Updated Wetland Mapping in Cache County. Utah Geological Survey, May 2022. http://dx.doi.org/10.34191/c-133.

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The Utah Geological Survey (UGS) recently updated wetland mapping in Cache County to provide accurate spatial data for responsible urban growth and resource management. The updated mapping identifies wetlands, waterbodies, and riparian areas as part of the National Wetland Inventory (NWI) dataset and includes new, more detailed information. The updated mapping can be viewed on the NWI Wetlands Mapper or the Utah Wetlands Mapper (see Additional Resources).

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Goodwin, Peter, and Rebecca Molinari. Cache Valley Wetland Mapping: Supplemental Report. Utah Geological Survey, July 2022. http://dx.doi.org/10.34191/ofr-744.

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This report summarizes a recently completed mapping project in Cache County that had three components: mapping wetland and riparian areas to update National Wetland Inventory (NWI) mapping; applying additional Landscape Position, Landform, Water Flow path, and Waterbody Type (LLWW) attributes to enhance utility and information provided by the new mapping; and developing landscape-scale models identifying likely functions provided by wetlands across the entire project area. The project area and extent of the mapping effort covers 533,000 acres of the county and includes the entire Cache Valley as well as parts of the Blacksmith Fork, Logan River, and High Creek watersheds in the Bear River Range. The project area includes most wetland areas in Cache County and the wetlands most likely affected by agricultural and urban development.

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Berkowitz, Jacob. Quantifying functional increases across a large-scale wetland restoration chronosequence. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41500.

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Over 300,000 ha of forested wetlands have undergone restoration within the Mississippi Alluvial Valley region. Restored forest successional stage varies, providing opportunities to document wetland functional increases across a large-scale restoration chronosequence using the Hydrogeomorphic (HGM) approach. Results from >600 restored study sites spanning a 25-year chronosequence indicate that: 1) wetland functional assessment variables increased toward reference conditions; 2) restored wetlands generally follow expected recovery trajectories; and 3) wetland functions display significant improvements across the restoration chronosequence. A functional lag between restored areas and mature reference wetlands persists in most instances. However, a subset of restored sites have attained mature reference wetland conditions in areas approaching or exceeding tree diameter and canopy closure thresholds. Study results highlight the importance of site selection and the benefits of evaluating a suite of wetland functions in order to identify appropriate restoration success milestones and design monitoring programs. For example, wetland functions associated with detention of precipitation (a largely physical process) rapidly increased under post restoration conditions, while improvements in wetland habitat functions (associated with forest establishment and maturation) required additional time. As the wetland science community transitions towards larger scale restoration efforts, effectively quantifying restoration functional improvements will become increasingly important.

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McBride, Wendy, Dave Kesonie, Emily Thorn, Dave Kesonie, Wendy McBride, and Emily Thorn. Spring wetland flora inventory?Curecanti National Recreation Area: Survey report. National Park Service, 2024. http://dx.doi.org/10.36967/2305289.

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This report provides the results from the 2021 spring wetland flora inventory at Curecanti National Recreation Area. In total, seven National Park Service units within the Northern Colorado Plateau Network determined the need to evaluate and map spring and wetland condition based on the presence/absence of perennial obligate and facultative wetland plant species known to occur in the parks. Mapping spring and wetland areas for each park provides a baseline measure of areas sensitive to drying that can be used to monitor change over time. The overall objective of the project was to establish a baseline for the area and condition of wetlands, seeps, and springs to provide supporting evidence for any future claims of impairment resulting from groundwater management actions. Survey results at Curecanti National Recreation Area identified and inventoried springs and wetlands at 11 of 27 surveyed sites. Additionally, seven Neversink cottonwood gallery survey sites were visited, with associated wetlands mapped and wetland vegetation sampled. This report summarizes the results at these 18 total sites, including spring type identification, dominant herbaceous plant species present, average plant cover, wildlife sign frequency and observation, and wetland feature map figures.

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McBride, Wendy, Dave Tacheeni Kesonie, Emily Thorn, Wendy McBride, Dave Tacheeni Kesonie, and Emily Thorn. Spring wetland flora inventory?Colorado National Monument survey report. National Park Service, 2024. http://dx.doi.org/10.36967/2305615.

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This report provides the results from the 2021 spring wetland flora inventory at Colorado National Monument. In total, seven National Park Service units within the Northern Colorado Plateau Network determined the need to evaluate and map spring and wetland condition based on the presence/absence of perennial obligate and facultative wetland plant species known to occur in the parks. Mapping spring and wetland areas for each park provides a baseline measure of areas sensitive to drying that can be used to monitor change over time. The overall objective of the project was to establish a baseline for the area and condition of wetlands, seeps, and springs to provide supporting evidence for any future claims of impairment resulting from groundwater management actions. Survey results at Colorado National Monument identified and inventoried springs and wetlands at 14 of 17 surveyed sites. This report summarizes the results at these 14 sites, including spring type identification, dominant herbaceous plant species present, average plant cover, wildlife sign frequency and observation, and wetland feature map figures.

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Keller, Adrienne Blair, and Stephen Dwight Handler. Carbon in non-forested wetlands of the Midwest and Eastern United States: a primer. [Houghton, Michigan]: USDA Northern Forests Climate Hub, August 2024. http://dx.doi.org/10.32747/2024.8633527.ch.

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Wetlands make up a small percentage of total land area in the United States, but they store a disproportionate amount of carbon largely due to their unique hydrology. Wetlands of the Midwest and Eastern regions are comprised of both mineral soil wetlands and organic soil wetlands (peatlands) and store a significant proportion of all wetland carbon in the contiguous United States. This primer provides a basic summary of how carbon is stored and moves through these wetlands and how climate change and management may interact with site conditions to alter wetland carbon cycling

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McBride, Wendy, Dave Kesonie, and Emily Thorne. Spring wetland flora inventory ? Bryce Canyon National Park: Survey report. National Park Service, 2024. http://dx.doi.org/10.36967/2303819.

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This report provides the results from the 2021 and 2022 spring wetland flora inventory at Bryce Canyon National Park. In total, seven National Park Service units within the Northern Colorado Plateau Network determined the need to evaluate and map spring and wetland condition based on the presence/absence of perennial obligate and facultative wetland plant species known to occur in the parks. Mapping spring and wetland areas for each park provides a baseline measure of areas sensitive to drying that can be used to monitor change over time. The overall objective of the project was to establish a baseline for the area and condition of wetlands, seeps, and springs to provide supporting evidence for any future claims of impairment resulting from groundwater management actions. Survey results at Bryce Canyon National Park identified and inventoried springs and wetlands at 13 of 20 survey sites. This report summarizes the results at these 13 sites, including spring type identification, dominant herbaceous plant species present, average plant cover, wildlife sign frequency and observation, and wetland feature map figures.

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Styles, Richard, David W. Perkey, S. Jarrell Smith, Duncan B. Bryant, Joseph Z. Gailani, and Brandon M. Boyd. Hydrodynamics of a recently restored coastal wetland : Hamilton Wetlands, California. Engineer Research and Development Center (U.S.), July 2020. http://dx.doi.org/10.21079/11681/37313.

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Pociask, Geoffrey, Brian Wilm, Kimberly Burkwald, Audra Noyes, and Julie Nieset. Results of IDOT Wetland Mitigation Needs Assessment. Illinois Center for Transportation, February 2024. http://dx.doi.org/10.36501/0197-9191/24-003.

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The Illinois Department of Transportation is required to provide mitigation for impacts to wetlands and streams under Section 404 of the federal Clean Water Act and the Illinois Interagency Wetlands Policy Act of 1989, regulations that protect the function and integrity of wetland and stream water quality and wildlife habitat. These regulations are enforced by the US Army Corps of Engineers at the federal level and by the Illinois Department of Natural Resources at the state level. Permits are issued on the condition that compensatory mitigation for those impacts will be provided by the permittee prior to or concurrent with a particular project. As a frequent permittee, IDOT faces various challenges in meeting compliance with wetland and stream regulations. If these challenges are not met on schedule, construction projects may be delayed. The principal challenge is identifying and executing an appropriate approach to obtaining compensatory mitigation credits to offset wetland and stream impacts in advance of projects. Under this principal challenge, there are external factors that involve regulatory agencies and commercial mitigation credit vendors and internal factors that can be addressed through IDOT policy development and implementation. IDOT requested this special project to examine these factors, obtain feedback from other state departments of transportation regarding their compensatory mitigation programs, and to assess overall challenges to providing timely wetland and stream mitigation as well as potential solutions to address these challenges.

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Berkowitz, Jacob, Gabrielle David, and Kyle Gordon. Technical guide for the development, evaluation, and modification of wetland rapid assessment methods for the Corps Regulatory Program. Engineer Research and Development Center (U.S.), April 2023. http://dx.doi.org/10.21079/11681/46932.

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The US Army Corps of Engineers (Corps) Regulatory Program considers the loss (decrease) and gain (improvement) of wetland functions as part of Clean Water Act Section 404 permitting and compensatory mitigation decisions. To better inform this regulatory decision-making, the Regulatory program needs accurate, transparent, objective, and defensible approaches to assess the function and condition of wetlands. Additionally, wetland assessments must balance the need for objective decision-making with the concurrent need to make Regulatory program decisions in a timely manner. Consequently, it is often necessary to assess wetlands using rapidly attainable proxy measures of ecological function or condition by evaluating a suite of metrics that represent structural and compositional attributes of a wetland. In response, this document describes a set of guidelines to effectively develop, evaluate, and modify wetland assessment methods, specifically for the Corps Regulatory Program.

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