Thematische Bibliographien / Coastal ponds

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  2. Dissertationen
  3. Bücher
  4. Buchteile
  5. Konferenzberichte
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Auswahl der wissenschaftlichen Literatur zum Thema „Coastal ponds“

Autor: Grafiati
Veröffentlicht am 25. Mai 2024

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Zeitschriftenartikel zum Thema "Coastal ponds"

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Firdaus, Mustika, Sulistiono und Bambang Widigdo. „Brackishwater pond development: present status and problems in the Padang Pariaman Regency of West Sumatera, Indonesia“. E3S Web of Conferences 322 (2021): 05009. http://dx.doi.org/10.1051/e3sconf/202132205009.

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Padang Pariaman Regency is one of the coastal regencies in West Sumatra which brackish aquaculture have been developed recently, especially shrimp pond aquaculture. This study was conducted to convey the pond's general condition, including the current status and the problems in aquaculture development. The method used was a desk study through the description of the status and the problems. Based on the study, the development of shrimp ponds increased quickly (63.77 ha) until 2019, which the largest number of ponds was in Batang Anai District, and spreading over 35 points. The production of that shrimp ponds in Padang Pariaman Regency reached 1,500 tons or Rp. 135 million (in 2017), which is marketed locally and outside Padang Pariaman. Problems that arose along with shrimp pond activities are 1. Shrimp pond construction is built very close to coastal areas 2. Shrimp pond activities do not have a business license, 3. Poor waste management of shrimp culture, 4. It is low involvement of the local community as technicians at the shrimp ponds, 5. Business license arrangement is done through third parties, and 6. It is an incompatibility between the area of ponds in the license and the real size of the ponds.
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Prokhorova, Nataliya Vladimirovna, Sergey Vyacheslavovich Bugrov, Yulia Vladimirovna Makarova, Yury Leonidovich Gerasimov, Igor Artemyevitch Platonov und Maksim Glebovich Goryunov. „Heavy metals in coastal soils and sediments of the ponds in Samara“. Samara Journal of Science 11, Nr. 4 (01.12.2022): 91–96. http://dx.doi.org/10.55355/snv2022114113.

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The total contents of Mn, Cr, Ni, Cu, Zn, Pb and Cd in foreshore soils and bottom sediments of 20 ponds have been investigated for the first time in Samara by the method of spectrometry with inductively coupled plasma. It is shown that polymetallic pollution of coastal soils and bottom sediments of 16 ponds out of 20 considered is acceptable; 3 ponds, located in the 13th microdistrict (small pond) and on the Solnechnaya street (large and small ponds), are characterized by moderately hazardous pollution with heavy metals; 1 pond, located in the area of the former Hippodrome, has a high level of pollution of coastal soils. Cu, Zn and Pb should be considered to be the main elements that significantly affected the ecological state of coastal soils and bottom sediments of the studied ponds. Their content in selected samples ranged: from 0,3 to 20,3 for Cu, from 0,2 to 14,9 units for Zn, from 0,2 to 25,2 units of background concentrations to Pb. The analysis of heavy metals average levels in coastal soils and bottom sediments of Samara ponds showed, that bottom sediments were enriched with all analyzed metals except Mn in comparison with coastal soils, whereas Mn was accumulated to upper levels in coastal soils. The location of water bodies in various parts of the urban area relief caused differences between the levels of heavy metals accumulation. For instance, the coastal soils of the ponds located on the watershed between the Saratov reservoir and the Samara River accumulated heavy metals more actively than the coastal soils of the ponds on the Volga slope. The accumulation of heavy metals in bottom sediments on the watershed was more active for Mn, Cr, Zn and Cd whereas in the ponds on the Volga slope it was shown for Ni, Cu and Pb.
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Zou, Zhaohui, Chao Chen, Zhisong Liu, Zili Zhang, Jintao Liang, Huixin Chen und Liyan Wang. „Extraction of Aquaculture Ponds along Coastal Region Using U2-Net Deep Learning Model from Remote Sensing Images“. Remote Sensing 14, Nr. 16 (17.08.2022): 4001. http://dx.doi.org/10.3390/rs14164001.

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The main challenge in extracting coastal aquaculture ponds is how to weaken the influence of the “same-spectrum foreign objects” effect and how to improve the definition of the boundary and accuracy of the extraction results of coastal aquaculture ponds. In this study, a recognition model based on the U2-Net deep learning model using remote sensing images for extracting coastal aquaculture ponds has been constructed. Firstly, image preprocessing is performed to amplify the spectral features. Second, samples are produced by visual interpretation. Third, the U2-Net deep learning model is used to train and extract aquaculture ponds along the coastal region. Finally, post-processing is performed to optimize the extraction results of the model. This method was validated in experiments in the Zhoushan Archipelago, China. The experimental results show that the average F-measure of the method in the study for the four study cases reaches 0.93, and the average precision and average recall rate are 92.21% and 93.79%, which is suitable for extraction applications in aquaculture ponds along the coastal region. This study can quickly and accurately carry out the mapping of coastal aquaculture ponds and can provide technical support for marine resource management and sustainable development.
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Karmakar, Anu Rani, Md Akram Ullah, Md Monjurul Hasan, Liza Akter, Md Milon Sarker, Takaomi Arai, Mohammad Nurul Azim Sikder, Mohammed Fahad Albeshr und Mohammad Belal Hossain. „Sedimentary Nutrient Dynamics in Homestead Fishpond Systems from a Subtropical Coastal Area“. Agriculture 12, Nr. 12 (03.12.2022): 2077. http://dx.doi.org/10.3390/agriculture12122077.

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Homestead ponds are small seasonal ponds that are rarely utilized for fish farming. Culturing fish in these small ponds can boost household fish consumption and cash inflow. The availability of nutrients in the water and sediment, however, plays a significant role in the pond’s natural productivity. This study was conducted to assess nutrient contents and some key physical parameters in the bottom sediments of 30 homestead ponds from the central coast along the Northern Bay of Bengal. Analyses of results showed the average values (±SD) of temperature, pH, electrical conductivity, organic matter (OM), organic carbon (°C), nitrogen (N), phosphorus (P) and sulphur (S) were 17.8 ± 1.12 °C, 7.29 ± 0.11, 0.41 ± 0.09 mS/cm, 29,615.48 ± 10,528.9 mg kg−1, 11,958 ± 6107 mg kg−1, 1030.6 ± 252 mg kg−1, 17.1 ± 13.5 mg kg−1 and 32.6 ± 19.7 mg kg−1 during winter and 27.2 ± 1.81 °C, 6.73 ± 0.12, 0.38 ± 0.17 mS/cm, 19,100.01 ± 13,739.07 mg kg−1, 11,079 ± 7969 mg kg−1, 955 ± 229.4 mg kg−1, 26.6 ± 20.2 mg kg−1 and 23.4 ± 15.9 mg kg−1 during pre-monsoon, respectively. One-way ANOVA revealed no significant differences in the mean value of sediment quality parameters among the selected ponds (p > 0.05) except for phosphorus in the winter season (p < 0.05). The sediment quality variables were found to be in the suitable range for fish culture. Pearson’s correlation coefficient values (r) showed that only organic carbon and nitrogen had a strong significant correlation with organic matter (p < 0.05). Based on Cluster Analysis (CA), two major associations among the nutrients were attained at a 15% similarity level: C, OM, and N in one cluster and P and S in another. The findings showed that the parameters were within the preferable range for aquaculture, and the homestead ponds are average productive ponds.
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Ren, Wei, Ziqiao Feng, Xinyi Wang, Ying Li, Hao Long, Xiaoni Cai, Aiyou Huang und Zhenyu Xie. „Contribution of the Types of Tropical Coastal Aquaculture Ponds to the Differential Distribution of the Family Bacillaceae Bacterial Community“. Aquaculture Research 2023 (02.06.2023): 1–10. http://dx.doi.org/10.1155/2023/4522234.

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The family Bacillaceae bacteria, particularly Bacillus communities, are useful and attractive probiotics with desirable features to fulfill the vast demand for aquaculture. In Hainan Island, the coastal aquaculture ponds hold about 1% of the total area in China, whereas the knowledge of Bacillaceae bacterial communities was limited. Herein, the Bacillaceae bacterial communities in the coastal aquaculture ponds of the artificial ponds (lined with high-density polyethylene plastic sheets) and earthen ponds were investigated by the culturable method. The characteristics of culturable Bacillaceae communities in these two types of coastal aquaculture ponds showed a massive difference. All the culturable Bacillaceae bacteria were identified as Bacillus in the artificial ponds, whereas the earthen ponds were dominated by Bacillus followed by Halobacillus. It is worth noting that the artificial ponds with a low Bacillaceae diversity displayed a high Bacillaceae concentration with a better water quality, whereas the earthen ponds with a higher Bacillaceae diversity and concentration displayed a higher risk of Vibrio infection, indicating that the Bacillaceae concentration than its diversity made a greater contribution to water purification and Vibrio control. This work besides providing a promising strategy for healthy coastal aquaculture by balancing the relationship between Bacillaceae concentration and its diversity also will lay a foundation for the development of probiotic Bacillaceae agents for wastewater purification and disease control.
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Tian, Peng, Yongchao Liu, Jialin Li, Ruiliang Pu, Luodan Cao, Haitao Zhang, Shunyi Ai und Yunze Yang. „Mapping Coastal Aquaculture Ponds of China Using Sentinel SAR Images in 2020 and Google Earth Engine“. Remote Sensing 14, Nr. 21 (26.10.2022): 5372. http://dx.doi.org/10.3390/rs14215372.

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Aquaculture has enormous potential for ensuring global food security and has experienced rapid growth globally. Thus, the accurate monitoring and mapping of coastal aquaculture ponds is necessary for the sustainable development and efficient management of the aquaculture industry. Here, we developed a map of coastal aquaculture ponds in China using Google Earth Engine (GEE) and the ArcGIS platform, Sentinel-1 SAR image data for 2020, the Sentinel-1 Dual-Polarized Water Index (SDWI), and water frequency obtained by identifying the special object features of aquaculture ponds and postprocessing interpretation. Our map had an overall accuracy of 93%, and we found that the coastal aquaculture pond area in China reached 6937 km2 in 2020. The aquaculture pond area was highest in Shandong, Guangdong, and Jiangsu Provinces, and at the city level, Dongying, Binzhou, Tangshan, and Dalian had the most aquaculture pond area. Aquaculture ponds had spatial heterogeneity; the aquaculture pond area in north China was larger than in south China and seaside areas had more pond area than inland regions. In addition, aquaculture ponds were concentrated near river estuaries, coastal plains, and gulfs, and were most dense in the Huang-Huai-Hai Plain and Pearl River Delta. We showed that GEE cloud processing and ArcGIS local processing could facilitate the classification of coastal aquaculture ponds, which can be used to inform and improve decision-making for the spatial optimization and intelligent monitoring of coastal aquaculture, with certain potential for spatial migration.
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Caraco, Nina, Armando Tamse, Osiris Boutros und Ivan Valiela. „Nutrient Limitation of Phytoplankton Growth in Brackish Coastal Ponds“. Canadian Journal of Fisheries and Aquatic Sciences 44, Nr. 2 (01.02.1987): 473–76. http://dx.doi.org/10.1139/f87-056.

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In general, the nutrient most limiting to phytoplankton growth is phosphorus in freshwaters and nitrogen in the sea. We investigated the effect of N and P enrichment to waters from seven brackish, coastal ponds ranging in salinity from 0 to 31 ppt and to nearby coastal seawater (32 ppt). Phytoplankton from the least saline ponds (0–6.5 ppt) responded to P additions, and biomass increased 2–6 times over unenriched controls. Nitrogen additions stimulated phytoplankton growth only in waters from the most saline coastal pond (31 ppt) and seawater. Phytoplankton from ponds of intermediate salinity did not respond when either N or P was added alone but, as in all ponds, increased greatly in biomass when N and P were added in combination. The high salinity at which a switch from P to N limitation occurred could be due to the high N:P loading ratios to these ponds.
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Sun, Zhe, Juhua Luo, Jingzhicheng Yang, Qiuyan Yu, Li Zhang, Kun Xue und Lirong Lu. „Nation-Scale Mapping of Coastal Aquaculture Ponds with Sentinel-1 SAR Data Using Google Earth Engine“. Remote Sensing 12, Nr. 18 (21.09.2020): 3086. http://dx.doi.org/10.3390/rs12183086.

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Global rapid expansion of the coastal aquaculture industry has made great contributions to enhance food security, but has also caused a series of ecological and environmental issues. Sustainable management of coastal areas requires the explicit and efficient mapping of the spatial distribution of aquaculture ponds. In this study, a Google Earth Engine (GEE) application was developed for mapping coastal aquaculture ponds at a national scale with a novel classification scheme using Sentinel-1 time series data. Relevant indices used in the classification mainly include the water index, texture, and geometric metrics derived from radar backscatter, which were then used to segment and classify aquaculture ponds. Using this approach, we classified aquaculture ponds for the full extent of the coastal area in Vietnam with an overall accuracy of 90.16% (based on independent sample evaluation). The approach, enabling wall-to-wall mapping and area estimation, is essential to the efficient monitoring and management of aquaculture ponds. The classification results showed that aquaculture ponds are widely distributed in Vietnam’s coastal area and are concentrated in the Mekong River Delta and Red River delta (85.14% of the total area), which are facing the increasing collective risk of climate change (e.g., sea level rise and salinity intrusion). Further investigation of the classification results also provides significant insights into the stability and deliverability of the approach. The water index derived from annual median radar backscatter intensity was determined to be efficient at mapping water bodies, likely due to its strong response to water bodies regardless of weather. The geometric metrics considering the spatial variation of radar backscatter patterns were effective at distinguishing aquaculture ponds from other water bodies. The primary use of GEE in this approach makes it replicable and transferable by other users. Our approach lays a solid foundation for intelligent monitoring and management of coastal ecosystems.
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Machado, Iberê F., Leonardo F. B. Moreira und Leonardo Maltchik. „Effects of pine invasion on anurans assemblage in southern Brazil coastal ponds“. Amphibia-Reptilia 33, Nr. 2 (2012): 227–37. http://dx.doi.org/10.1163/156853812x638518.

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The destruction of wetlands due to afforestation areas is a common activity in temperate and subtropical regions in Southern America. The expansion of pine in the Coastal Plain of Southern Brazil is out of control and its impacts on aquatic biodiversity are little known. We tested the following hypotheses: the pine occurrence diminishes the anuran richness and abundance in ponds and it changes the anuran composition; the beta-diversity between pine and native grassland matrix ponds (natural ponds) is determined mainly by nestedness. Sampling was carried out from 2007 to 2009 in five ponds in pine invasion matrix and five ponds in native grassland matrix. The natural ponds showed a greater richness of tadpoles (10 species) than pine ponds (5 species). The mean richness of adults was higher in natural ponds than pine ponds throughout the entire study. The species composition was different between natural and pine ponds, for both adults and tadpoles. Comparing natural ponds with each other and the pine ponds with each other, our results showed that neither nestedness nor turnover was determinant for beta-diversity. However, when natural ponds were compared with pine ones, we found that the contribution of nestedness was higher for the anurans beta-diversity than turnover. Increases in the nestedness mechanism indicated that the pine occurrence results in species loss in Southern Brazil ponds. Since 90% of its wetland has been already affected, the removal of Pinus in the conservation areas in southern Brazil is important to minimize their impacts on aquatic biodiversity.
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Sorrie, Bruce A. „Coastal plain ponds in New England“. Biological Conservation 68, Nr. 3 (1994): 225–33. http://dx.doi.org/10.1016/0006-3207(94)90410-3.

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Dissertationen zum Thema "Coastal ponds"

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Ford, Kathryn Hale. „Assessment of the Rhode Island coastal lagoon ecosystem /“. View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3115628.

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Maritz, Liezl. „Ecological role of mining ponds in Southern Coastal Mines, Namibia“. Master's thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/32833.

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Targeting marine diamondiferous deposits along the south-western Namibian coastline has involved the construction of seawall berms to advance the coastline and permit mining in previously subtidal areas. Large areas are mined out to bedrock level by the removal of overburden (sand and gravel), and after mining is complete, areas behind the seawalls fill with seawater, creating a series of coastal marine ponds that have the potential to function as saline wetlands corresponding to closed estuaries. The study site lies north of the Orange River mouth, within the Tsau//Khaeb (Sperrgebiet) National Park, to which the public has restricted access due to diamond mining in the area. Consequently, there is a focus on biodiversity conservation and the overall objective of this thesis was to determine the ecological value of the mining ponds by investigating whether they harbour sufficient biodiversity to qualify as a viable alternative ecological habitat, rather than restoring them to their original state as backfilled, revegetated dune areas. The study area, approximately 75 kilometres in length, was divided into north, middle and south sections, according to the age and status of mining activities, and I first assessed whether ponds in these three areas differed in their physical properties (Chapter 1). To determine whether the ponds serve as a useful ecological role worth preserving, I then investigated the diversity and amount of saltmarsh vegetation (Chapter 2), bird species (Chapter 3) and fish (Chapter 4) currently benefiting from these mining ponds. Ponds in the north are older and hypersaline whereas the south and middle ponds are younger and closely approach physical conditions in the sea. Diurnal fluctuations in oxygen concentration took place, but oxygen levels never dropped below 80% and were thus not limiting. After about 15 years, ponds developed salinities in excess of 80‰, which is likely to set limits on their ecological viability. Most ponds supported saltmarshes, but only a single species, Salicornia natalensis, grew around them. Its abundance was greatest around old ponds, but its health decreased with salinity. Wind emerged as a likely means of dispersal among ponds. The ponds supported a rich avifauna, averaging 11028 birds per count for all ponds combined; 36 species were recorded, ten being endemics, and five being listed in Namibia's Red Data Book. Numbers were highest for ponds that were being ‘dewatered' to remove water prior to mining, as this exposed a rich benthic epifaunal source of food. Blacknecked Grebe, Cape Cormorant, Greater and Lesser Flamingos, Kelp Gull and Common Tern were the most abundant birds. Salinity did not limit bird numbers or diversity, so the northern high-salinity ponds may continue to serve as bird habitat for periods of time much greater than the 15 years after which they become hypersaline. In comparison with nine other wetlands in the region, the ponds had great numbers, diversity, densities, and numbers of threatened species than about half of these wetlands, many of which are considered Important Bird Areas (IBAs). In many cases, they also supported more species that had numbers in excess of 1% of the southern African population than these IBAs. Only two species of fish commonly occurred in the ponds, the west coast steenbras Lithognathus auratus and the southern mullet Chelon richardsonii, although small numbers of two other marine species were recorded. The diversity of marine fish was thus low, even by the impoverished standards of west-coast estuaries. Unexpectedly, there were no significant differences between the ichthyofauna of ponds in the north, middle and south, nor was there any relationship between total fish numbers and salinity. Body condition of steenbras was lowest in the hypersaline north ponds, and their stomach contents contained a low diversity of food items there. The presence of recruits and the range of gonadal states suggested that both species bred in the ponds. Steenbras proved to be protandrous, with females dominating larger size classes. Growth rates of both species were faster in the ponds than in the adjacent sea, and mullet achieved substantially greater sizes in ponds. Thus, the ponds do serve as viable ecosystems, albeit with a limited range of saltmarsh and fish species, and support an impressively diverse avifauna. Their long-term viability will, however, become limited by rising salinity as their age increases.
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Fu, Jing. „Environmental Impacts of Aquaculture Ponds on Coastal Wetlands in the Yellow River Estuary“. Kyoto University, 2017. http://hdl.handle.net/2433/225949.

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Larson, Rebekka Amie. „High-Resolution Event Stratigraphy of mm-Scale Laminated Sediments from Coastal Salt Ponds: St. John, US Virgin Islands“. Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3196.

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A multi-proxy approach is utilized on mm- to cm-scale laminated sediment records in coastal salt ponds on St. John, U.S. Virgin Islands to characterize the sediments, identify their sources and depositional processes/events (heavy rainfall, tropical cyclones, tsunamis). Historical records are combined with high-resolution geochronology (short-lived radioisotopes, 210Pb, 137Cs, 7Be) and scanning elemental techniques (XRF and LA-ICP-MS) to link depositional events to how they are manifested in the sedimentary record. Volcanic rocks are the terrigenous sediment source and the sedimentary signature of terrigenous sediment in the geologic record consists of higher amounts of Al, Fe, Ti, Co, and Si, and is associated with terrigenous runoff due to rainfall events. A minimum threshold value of >2.0 mm per day (minimum to erode and transport terrigenous sediment downslope) of rainfall has been determined for the study area. The frequency of heavy rainfall events that exceed the threshold of >2.0 mm per day is significantly correlated to the amount of terrigenous sediment accumulation of the terrigenous indictor element Al measured by scanning LA-ICP-MS. There is a robust sedimentary record of terrigenous sediment runoff that is a function of the frequency of heavy rainfall events (exceed threshold). Variability in the sedimentary record reflects changes between periods of "wet" increased frequency of heavy rainfall events and "dry" decreased frequency of heavy rainfall events. Tropical cyclones and tsunamis can cause marine overwash into salt ponds leading to deposition of marine sediments. Elemental scans for Ca and Sr and overwash indicator elements are complicated by grain size effects of LA-ICP-MS techniques, as well the difficulty in differentiating between tropical cyclone overwash deposits and tsunami deposits. By defining the sedimentary signature for depositional events , geologic records can be interpreted to provide insight into the natural variability of these processes throughout geologic time for comparisons to the more recent anthropogenic time period. This study provides a framework that can be applied to other coastal environments on high-relief tropical islands, to compare local records, and provide information on regional processes controlling rainfall variability in tropical latitudes.
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Spangler, Jonathan Travis. „An Assessment of Floating Treatment Wetlands for Reducing Nutrient Loads from Agricultural Runoff in Coastal Virginia“. Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/86656.

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Floating treatment wetlands (FTWs) are an innovative best management practice that can enhance the performance of traditional retention ponds by increasing removal of the nutrients nitrogen (N) and phosphorous (P). FTWs consist of floating rafts on which wetland plants are planted, allowing the roots to be submerged below the water surface while the shoots remain above. A growing body of research has documented FTW performance with regard to urban runoff treatment, however evaluation of FTW effectiveness for treatment of agricultural runoff has received less attention. Due to high fertilization and irrigation rates, commercial nursery runoff contains much higher concentrations of N and P than runoff from urban areas. We conducted this study over two growing seasons (2015 and 2016) to assess the effectiveness of FTWs for use in commercial nursery retention ponds. In the first study we used two different nutrient concentrations, one to simulate nursery runoff (17.1 mg∙L-1 TN and 2.61 mg∙L-1 TP) and one to simulate concentrations that fall between urban and nursery runoff (5.22 mg∙L-1 TN and 0.52 mg∙L-1 TP). Four treatments were used: 1) Pontederia cordata planted in cups supported by a Beemat, 2) Juncus effusus planted in cups supported by a Beemat, 3) a Beemat with no plants, and 4) no treatment (open-water). Performance was evaluated based on a 7-day hydraulic retention time (HRT). Pontederia cordata removed between 90.3% and 92.4% of total phosphorus (TP) and 84.3% and 88.9% total nitrogen (TN), depending on initial loads. These reductions were significantly more than other treatments at both high and low nutrient loading rates. Juncus effusus performed better than the control treatments for TP removal at low nutrient concentrations, but did not perform any better than the control at higher nutrient loads. In the second study, conducted in 2016, we evaluated different plant species over two 8-week trials using simulated nursery runoff. We used five monoculture FTWs with the following species: Agrostis alba, Canna ×generalis, Carex stricta, Iris ensata, and Panicum virgatum. Additionally, two treatments were created from mixed species plantings and the final treatment consisted of an open water control mesocosm. Nutrient removal performance was evaluated over a 7-day HRT. P removal (phosphate-P) by FTW treatments ranged from 26.1% to 64.7% for trial 1 and 26.8% to 63.2% for trial 2. Trial 1 N removal (sum of ammonium-N, nitrate-N, and nitrite-N) efficiencies ranged from 38.9% to 82.4%, and trial 2 ranged from 12.9% to 59.6%. Panicum virgatum removed significantly more N and P than the control and any other FTW treatment in the second study. Both studies indicated, depending upon plant species, that FTWs can effectively remove nitrogen and phosphorous from urban and commercial nursery retention ponds.
Master of Science
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Debrie, Juliette. „Traçage des conditions environnementales et de l'activité microbienne dans des stromatolites formés en contexte évaporitique : stromatolites actuels de Sardaigne et stromatolites du Messinien (6Ma)“. Electronic Thesis or Diss., Sorbonne université, 2022. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2022SORUS454.pdf.

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Les stromatolites sont des structures organo-sédimentaires laminées, formées grâce à l’activité microbienne. Présents depuis plus de 3,5 milliards d’années, ils comptent parmi les plus anciennes traces de vie connues sur Terre et ils fournissent des informations précieuses sur la paléobiodiversité et les paléoenvironnements. De nombreuses études ont permis de développer une connaissance approfondie sur les stromatolites actuels, marins et lacustres, pouvant servir de référence pour l’interprétation des stromatolites anciens. Cependant, peu de travaux concernent des stromatolites d'environnements côtiers et lagunaires, qui, pourtant, enregistrent des caractéristiques chimiques, biologiques et minéralogiques significatives. Or, certains stromatolites anciens, comme ceux du Messinien (~6 Ma), abondamment présents dans l'ensemble du bassin méditerranéen, se sont possiblement formés dans un environnement côtier et/ou lagunaire soumis à des variations de salinité. L’objectif central de cette thèse est de comprendre comment l’environnement de formation (comprenant les paramètres abiotiques et biotiques) est enregistré dans des stromatolites actuels de Sardaigne, formés dans des étangs côtiers soumis à de fortes variations de salinité. Ces stromatolites sont principalement composés de calcite magnésienne. Une approche corrélative multi-échelles a révélé une diversité de phases minéralogiques comprenant divers carbonates, des phases argileuses authigènes, des phases sulfatées et un peu de détritisme. Nous avons observé des variations et une distribution spécifique des rapports Mg/Ca et Mn/Fe dans les calcites. Les calcites les plus enrichies en Mg et avec le rapport Mn/Fe le plus grand étaient systématiquement distribuées autour des restes microbiens. Nous avons supposé que l’activité microbienne exerçait un contrôle majeur sur la substitution du Mg dans la calcite, avec peut-être, une dynamique des populations microbiennes, influencée par les variations de salinité. De même, les variations du rapport Mn/Fe ont été interprétées comme étant des indicateurs des variations des conditions oxiques/anoxiques pouvant survenir localement dans le biofilm. En revanche, en lien avec le suivi géochimique des eaux des lagunes, il a semblé qu’à grande échelle, la distribution minéralogique était liée aux variations de salinité induites par l’évaporation dans les lagunes. En parallèle, l’évaluation de la distribution spatiale des signaux de fluorescence dans le visible a montré une préservation exceptionnelle de pigments photosynthétiques chlorophylle/phycocyanine dans des échantillons sardes ainsi qu'une une possible conservation de pigments photosynthétiques dégradés en lien avec l’activité microbienne dans les échantillons sardes et du Messinien
Stromatolites are laminated organo-sedimentary structures formed by microbial activity. Documented for more than 3.5 billion years, they are among the oldest known traces of life on Earth and they provide precious information on paleobiodiversity and paleoenvironments. Modern marine and lacustrine stromatolites are well-studied and they often use as references for the interpretation of ancient stromatolites. However, little is known about coastal and lagoonal stromatolites whereas they can record significant chemical, biological and mineralogical features. Yet, some ancient stromatolites, such as the Messinian ones (~6 Ma), abundantly present throughout the Mediterranean basin, are considered to have been formed in a coastal and/or lagoon environment subject to salinity variations. The main objective of this thesis is to understand how the formation environment (including abiotic and biotic factors) is recorded in modern sardinian stromatolites, formed in coastal ponds subjected to strong salinity variations. These stromatolites are mainly composed of magnesian calcite. A multi-scale correlative approach revealed a diversity of mineralogical phases including various carbonates, authigenic clays, sulfate phases, and some detritism. We observed variations and specific distribution of Mg/Ca and Mn/Fe ratios in the calcites. Calcites with the highest Mg enrichment and Mn/Fe ratio were systematically distributed around the microbial remains. We assumed that microbial activity had a major control on Mg substitution in calcite and that the dynamic of microbial populations, was influenced by the salinity variations. Similarly, Mn/Fe variations in calcite were interpreted as indicators of local oxic/anoxic variations in the biofilms. Thanks to the geochemical monitoring of lagoon waters, we proposed that, on a large scale, the mineralogical distribution was related to salinity variations induced by evaporation in lagoons. Meanwhile, the evaluation of the spatial distribution of visible fluorescence signals showed the exceptional preservation of chlorophyll/phycocyanin pigments in Sardinian samples. It also revealed the potential preservation of degraded photosynthetic pigments related to microbial activity in Sardinian and Messinian samples
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Haupert, Christie Lynn 1976. „Nutrient limitation dynamics of a coastal Cape Cod pond : seasonal trends in alkaline phosphatase activity“. Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/55335.

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Thesis (M.S.)--Joint Program in Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), February 2001.
Includes bibliographical references (leaves 144-149).
A bi-weekly seasonal study was conducted in Ashumet Pond (Cape Cod, Massachusetts). The Redfield Ratio (106C:16N:1P) and alkaline phosphatase activity (APA) were utilized in tandem as nutrient deficiency indicators (NDIs) for phytoplankton. The study objective was to evaluate the limiting nutrient status of the pond throughout the growing season. The development of a high throughput method for fluorometrically measuring APA allowed for a large quantity of pond-water samples to be analyzed. The new method utilized a cytofluor, a fluorescence multi-well plate reader, which increased sample throughput by 75% compared to a standard filter fluorometer method. The detection limit, capability to measure APA at different time intervals, and performance at sea were tested. APA measurements made using the cytofluor were comparable to those made using a standard filter fluorometer, thus indicating that the cytofluor is a suitable and preferred replacement to the fluorometer for APA measurements. The presence of alkaline phosphatase, an inducible phospho-hydrolytic enzyme, is commonly used as an NDI diagnostic for phosphate limitation. A nutrient enrichment incubation re-affirmed the use of APA as a robust indicator of phosphate limitation in phytoplankton. APA data indicate that the system experienced episodic periods of phosphate-deficiency, implying that the limiting nutrient regime was not static, but was changeable throughout the growing season. Seasonal trends in dissolved N:P and particulate C:P ratios often contradict the APA results, however, suggesting that the Redfield Ratio is an unreliable indicator of the overall nutrient limitation regime of the pond. The observed discrepancies between C:N:P and APA can be reconciled by taking into account seasonal changes in species composition, which played an important role in driving seasonal APA trends.
by Christie Lynn Haupert.
M.S.
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Nayeb, Yazdi Mohammad. „Understanding the role of scale in assessing sediment and nutrient loads from Coastal Plain watersheds delivered to the Chesapeake Bay“. Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/99377.

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Urban and agricultural runoff is the principal contributor to non-point source (NPS) pollution and subsequent impairments of streams, rivers, lakes, and estuaries. Urban and agricultural runoff is a major source of sediment, nitrogen (N) and phosphorus (P) loading to receiving waters. Coastal waters in the southeastern U.S. are vulnerable to human impacts due to the proximity to urban an agricultural land uses, and hydrologic connection of the Coastal Plain to receiving waters. To mitigate the impacts of urban and agricultural runoff, a variety of stormwater control measures (SCMs) are implemented. Despite the importance of the Coastal Plain on water quality and quantity, few studies are available that focus on prediction of nutrient and sediment runoff loads from Coastal Plain watersheds. The overall goals of my dissertation are to assess the effect of urban and agricultural watershed on coastal waters through monitoring and modeling, and to characterize treatment performance of SCMs. These goals are addressed in four independent studies. First, we developed the Storm Water Management Model (SWMM) and the Hydrologic Simulation Program-Fortran (HSPF) models for an urbanized watershed to compared the ability of these two models at simulating streamflow, peak flow, and baseflow. Three separate monitoring and modeling programs were conducted on: 1) six urban land uses (i.e. commercial, industrial, low density residential, high density residential, transportation, and open space); 2) container nursey; and 3) a Coastal Plain retention pond. This study provides methods for estimating watershed pollutant loads. This is a key missing link in implementing watershed improvement strategies and selecting the most appropriate urban BMPs at the local scale. Results of these projects will help urban planners, urban decision makers and ecological experts for long-term sustainable management of urbanized and agricultural watersheds.
Doctor of Philosophy
Urban and agricultural runoff is a major source of sediment, nitrogen (N) and phosphorus (P) loading to receiving waters. When in excess, these pollutants degrade water quality and threaten aquatic ecosystems. Coastal waters in the southeastern U.S. are vulnerable to human impacts due to the proximity to urban an agricultural landuse. To mitigate the impacts of urban and agricultural runoff, a variety of stormwater control measures (SCMs) are implemented. The overall goals of my dissertation are to assess the effect of urban and agricultural watershed on coastal waters through monitoring and modeling, and to characterize treatment performance of SCMs. These goals are addressed in four independent studies. First, we developed two watershed models the Storm Water Management Model (SWMM) and the Hydrologic Simulation Program-Fortran (HSPF) to simulate streamflow, peak flow, and baseflow within an urbanized watershed. Three separate monitoring programs were conducted on: (1) urban land uses (i.e. commercial, industrial, low density residential, high density residential, transportation, and open space); (2) container nursey; and (3) a Coastal Plain retention pond. These studies provided methods for estimating watershed pollutant loads. Results of these projects will help urban planners and ecological experts for long-term sustainable management of urbanized and agricultural watersheds.
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Della, Bella Valentina. „COMPOSIZIONE TASSONOMICA, ORGANIZZAZIONE FUNZIONALE E STRUTTURA IN TAGLIA DELLA MACROFAUNA A INVERTEBRATI DI BIOTOPI TEMPORANEI E PERMANENTI DEL LITORALE TIRRENICO - TAXONOMIC COMPOSITION, FUNCTIONAL ORGANIZATION AND SIZE STRUCTURE OF MACROINVERTEBRATE COMMUNITIES IN TEMPORARY AND PERMANENT PONDS OF THE TYRRHENIAN COAST“. Doctoral thesis, La Sapienza, 2005. http://hdl.handle.net/11573/916841.

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Houssein, Abdi Yassin. „La côte continentale du Pertuis Breton, du début du XVIIIe siècle à la fin du Second Empire : évolution et aménagement du littoral depuis la Tranche-sur-Mer jusqu'au nord de La Rochelle“. Electronic Thesis or Diss., La Rochelle, 2023. http://www.theses.fr/2023LAROS013.

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Entre le début du XVIIIe siècle et la fin du Second Empire, la côte continentale du Pertuis Breton connaît une évolution significative. Elle est constituée de trois paysages géomorphologiques singuliers, dynamiques et corrélés : un territoire marécageux, une zone dunaire et une côte à falaises. Ces milieux subissent des transformations naturelles lentes à l’origine de la constitution des flèches sableuses d’Arcay et de l’Aiguillon qui forment un grand cordon dunaire. Celui-ci est alimenté par un transport considérable des sables de l’ouest vers l’est par dérive littorale. Ces mouvements de sédiments sont soumis à l’influence d’agents hydrodynamiques. La remontée des eaux de l’océan entraîne le colmatage progressif du golfe des Pictons par des apports de sédiments d’origine fluvio-marine. Ce processus est à l’origine de la formation de l’anse de l’Aiguillon et du Marais poitevin. Ces milieux subissent également des transformations naturelles brutales dues à des phénomènes climatiques extrêmes. Cette étude met aussi en lumière la part de l’influence humaine dans l’évolution et la modification de leur trait de côte. Les aménagements sont particulièrement visibles dans le Marais poitevin. Entre le Moyen Âge et le XIXe siècle, ce territoire est l’enjeu d’une grande transformation qui modifie largement son écosystème. Cette zone humide est drainée par l’instauration de canaux, de digues et d’écluses. Grâce aux dessèchements réalisés par les sociétés des marais, l’agriculture et l’élevage connaissent un essor considérable et remplacent progressivement ces terres inondables réputées insalubres. Les marais connaissent alors un afflux de population. L'Etat est présent sur ce littoral par l’intermédiaire des Amirautés sous l’Ancien Régime ou de l’administration des Ponts et Chaussées au XIXe siècle
Between the beginning of the 18th century and the end of the Second Empire, the continental coast of the Pertuis Breton experienced a significant evolution. It is composed of three singular, dynamic and correlated geomorphological landscapes: a marshy area, a dune zone and a cliff coast. These environments underwent slow natural transformations which led to the creation of the sandy spits of Arcay and Aiguillon which form a large dune belt. The latter is fed by a considerable transport of sand from west to east by littoral drift. These sediment movements are subject to the influence of hydrodynamic agents. The rise in oceanic waters leads to the progressive clogging of the Gulf of the Pictons with sediment of fluvio marine origin. This process is at the origin of the formation of the Aiguillon Cove and the Poitevin Marsh. These environments also go through brutal natural transformations due to extreme climatic phenomena. This study also highlights the role of human influence in the evolution and modification of their coastline. Developments are particularly visible in the Marais Poitevin. Between the Middle Ages and the 19th century, this territory was the focus of a major transformation that greatly modified its ecosystem. This wetland was drained by the creation of canals, dykes and locks. Thanks to the draining carried out by the marsh companies, agriculture and livestock farming flourished and gradually replaced the flooded lands, which were considered unsanitary. The marshes then experienced an influx of people. The State is present on this coastline through the Admiralty under the Ancien Régime or the administration of the Ponts et Chaussées in the 19th century
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Bücher zum Thema "Coastal ponds"

1

Boaden, Patrick J. S. An introduction to coastal ecology. London: Blackie, 1985.

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Treasures of our natural heritage: Coastal plain ponds of Southeastern Massachusetts. Plymouth, Mass: Wildlands Trust of Southeastern Massachusetts, 1998.

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Farber, Joseph M. Ancient Hawaiian fishponds: Can restoration succeed on Molokaʻi? Encinitas, Calif: Neptune House Publications, 1997.

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Raymond, Seed, Hrsg. An introduction to coastal ecology. Glasgow: Blackie, 1985.

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Boaden, Patrick J. S. An introduction to coastal ecology. Glasgow: Blackie, 1985.

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Kerns, Molly Ann. Inventory and hazard assessment of Maryland's coastal sand and gravel wash plants and ponds. Annapolis, Md. (Tawes State Office Building, Annapolis 21401): The Department, 1988.

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Sharan, Girja. Dew harvest: To supplement drinking water sources in arid coastal belt of Kutch. Ahmedabad: Centre for Environment Education, 2006.

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P, Masterson John, Air Force Center for Environmental Excellence (U.S.) und Geological Survey (U.S.), Hrsg. Simulated changes in the sources of ground water for public-supply wells, ponds, streams, and coastal areas on western Cape Cod, Massachusetts. [Reston, Va.?: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

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P, Masterson John, Air Force Center for Environmental Excellence (U.S.) und Geological Survey (U.S.), Hrsg. Simulated changes in the sources of ground water for public-supply wells, ponds, streams, and coastal areas on western Cape Cod, Massachusetts. [Reston, Va.?: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

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P, Masterson John, Air Force Center for Environmental Excellence (U.S.) und Geological Survey (U.S.), Hrsg. Simulated changes in the sources of ground water for public-supply wells, ponds, streams, and coastal areas on western Cape Cod, Massachusetts. [Reston, Va.?: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

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Buchteile zum Thema "Coastal ponds"

1

Bartoli, M., L. Vezzulli, D. Nizzoli, R. Azzoni, S. Porrello, M. Moreno, M. Fabiano und P. Viaroli. „Short-term effect of oxic to anoxic transition on benthic microbial activity and solute fluxes in organic-rich phytotreatment ponds“. In Eutrophication in Coastal Ecosystems, 123–36. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-3385-7_11.

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Sachoemar, Suhendar I., und Tetsuo Yanagi. „Reviving Abandoned Aquaculture Ponds and Coastal Areas by Integrated Multi-trophic Aquaculture“. In Satoumi Science, 105–20. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7491-4_7.

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Buffan-Dubau, Evelyne, und Jacques Castel. „Diel and seasonal vertical distribution of meiobenthic copepods in muddy sediments of a eutrophic lagoon (fish ponds of Arcachon Bay)“. In Coastal Lagoon Eutrophication and ANaerobic Processes (C.L.E.AN.), 69–78. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1744-6_6.

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Tharwat, Adel Ahmed, und Saad Mohammed AL-Qarni. „Environmental Treatment: The Drainage of Marine Fish Farms by Cultivating Mangroves in Coastal Sedimentation Ponds“. In Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (3rd Edition), 593–96. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-43922-3_133.

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Della Bella, Valentina, und Laura Mancini. „Freshwater diatom and macroinvertebrate diversity of coastal permanent ponds along a gradient of human impact in a Mediterranean eco-region“. In Pond Conservation in Europe, 181–97. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-9088-1_16.

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Michot, Thomas C., Marc C. Woodin, Stephen E. Adair und E. Barry Moser. „Diurnal time-activity budgets of redheads (Aythya americana) wintering in seagrass beds and coastal ponds in Louisiana and Texas“. In Limnology and Aquatic Birds, 113–28. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/978-1-4020-5556-0_10.

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Chowdhury, Abhiroop, Raghav Prakash, Santanu Bhattacharyya und Aliya Naz. „Role of Ponds as a Local Practice in Mitigating Salinity Intrusion Threats at Coastal Aquifer: A Case Study from Sundarban Biosphere Reserve, India“. In Indigenous and Local Water Knowledge, Values and Practices, 287–306. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-9406-7_17.

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Hill, Kristina, und Greg Henderson. „Pond Urbanism: Floating Urban Districts on Shallow Coastal Groundwater“. In Lecture Notes in Civil Engineering, 23–42. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2256-4_2.

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Wahid, Marfiah Ab, Zummy Dahria Mohamed Basri, Azianabiha A. Halip, Fauzi Baharudin, Janmaizatulriah Jani und Mohd Fozi Ali. „Antibiotic Resistance Bacteria in Coastal Shrimp Pond Water and Effluent“. In InCIEC 2014, 1011–18. Singapore: Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-287-290-6_88.

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Della Bella, Valentina, Marcello Bazzanti, Maria Giuseppina Dowgiallo und Mauro Iberite. „Macrophyte diversity and physico-chemical characteristics of Tyrrhenian coast ponds in central Italy: implications for conservation“. In Pond Conservation in Europe, 85–95. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-90-481-9088-1_8.

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Konferenzberichte zum Thema "Coastal ponds"

1

Prasanth, S. Ravi, Mehreena Yaqoob, Kumar Arun Prasad, Sulochana Shekhar und L. Gnanappazham. „Characterizing Water Dynamics of Coastal Aquaculture Ponds using Index based Time Series Analysis“. In 2023 IEEE India Geoscience and Remote Sensing Symposium (InGARSS). IEEE, 2023. http://dx.doi.org/10.1109/ingarss59135.2023.10490355.

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Burke, James, Sophie Alpert, Barbara A. Beckingham und K. Adem Ali. „GREEN LAKES FROM SPACE: MONITORING STORMWATER PONDS IN COASTAL SOUTH CAROLINA BY REMOTE SENSING“. In 68th Annual GSA Southeastern Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019se-326014.

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Ottinger, Marco, Kersten Clauss, Juliane Huth, Christina Eisfelder, Patrick Leinenkugel und Claudia Kuenzer. „Time series sentinel-1 SAR data for the mapping of aquaculture ponds in coastal Asia“. In IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2018. http://dx.doi.org/10.1109/igarss.2018.8651419.

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Beckingham, Barbara A., Vijay M. Vulava und Timothy J. Callahan. „PROLIFERATION OF STORMWATER PONDS IN THE COASTAL PLAIN AREAS OF THE SOUTHEASTERN U.S. PRESENTS CRITICAL RESEARCH NEEDS“. In 68th Annual GSA Southeastern Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019se-327119.

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Smith, Erik M. „BIOGEOCHEMISTRY OF STORMWATER PONDS: IMPACTS ON NUTRIENT AND ORGANIC MATTER TRANSFORMATIONS AND TRANSPORT IN COASTAL SOUTH CAROLINA“. In 68th Annual GSA Southeastern Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019se-327375.

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Ernawati, Rika, Herlando Bubala, Tedy Agung Cahyadi, Waterman Sulistyana Bargawa und Nurkhamim. „The management and control of water overlows from the settling ponds to coastal waters in PT. X“. In 2ND INTERNATIONAL CONFERENCE ON EARTH SCIENCE, MINERAL, AND ENERGY. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0007250.

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Wijaya, Nirmalasari, Rendi Sanjaya und Nuhman. „Influence of Waters in Silvofishery Ponds on Wonorejo Mangroves That Contaminated by Heavy Metals Pb, Cd, and Cu toward Aquaculture Animals“. In The 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management. SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0010061602310235.

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Wijaya, Nirmalasari, Rendi Sanjaya und Nuhman. „Influence of Waters in Silvofishery Ponds on Wonorejo Mangroves That Contaminated by Heavy Metals Pb, Cd, and Cu toward Aquaculture Animals“. In The 7th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management. SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0010061602070211.

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Sudaryatno, Nanung Agus Fitriyanto, Djarot Heru Santosa, Achmad Munjid, Moh Masrukhi, Garda Kalari Yustisiansyah und Ernani Uswatun Khasanah. „Mangrove Conservation Application Based on Site Selection Using PlanetScope Imagery in Pedaleman Village, Tanara District, Serang“. In 3rd International Conference on Community Engagement and Education for Sustainable Development. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.151.46.

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Mangrove conservation in Indonesia has progressed from planning, and implementation to monitoring, supported by the efforts of the government and non-governmental groups. Mangrove rehabilitation and conservation is an effort to restore the function of degraded mangrove forests and increase the potential for suitable land to be planted with mangroves. Mangrove rehabilitation efforts in Pedaleman Village, Tanara Sub-district, have created a significant mangrove ecosystem in the surrounding area, including the arrangement and restriction of conservation areas with fishpond business areas. Rehabilitation efforts can be realized by selecting suitable site of mangrove planting locations as part of conservation planning. Site selection by visual interpretation method using remote sensing imagery from Planetscope satellite has provided a synaptic overview of land use in the coastal and estuary area of Pedaleman Village. This site selection results in potential mangrove planting areas and non-potential areas. More than 50% of the coastal area of Pedaleman Village is considered conducive for mangrove seedling planting planning. Of this percentage, there are some land uses of ponds and vacant land, most of which can be converted into part of the mangrove forest area.
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van de Poll, Robert, Jason Smith und John Chatten. „Shallow Water Mapping: Remote Solution for Global Satellite-Derived Sea-Floor Mapping“. In Offshore Technology Conference Brasil. OTC, 2023. http://dx.doi.org/10.4043/32737-ms.

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Abstract Qualitative site reconnaissance from satellite imagery offers critical insights about shallow-water areas, including coastal zones, river deltas, estuaries, lakes, ponds, etc. This information is critical when considering proposed sites for new infrastructure. Whether a ports and harbor project, fiber-optic cable landing site, offshore pipeline or power cable landing for a new offshore wind development, identifying potential hazards or constraints saves time and money. Using 2D raw global coverage satellite imagery, it is possible to create 3D seabed geomorphologic deliverables for preliminary shallow water hazard and site assessment. This approach has been used in 145 Countries on 2,200 projects over the past 07 years. Because underlying data deliverables are sourced from 2D optical satellite imagery, assessments are limited to 10-20 m water depth, dependent on the atmospheric and water quality conditions. Archived images can deliver a 10-year historical analysis, offering valuable insights to seabed changes over time. Deliverables of this technique comprise a series of satellite images, referred to as 4D seabed surface morphology (4DSSM) image technology. Deliverables are offered at two precision levels. Level 1 involves 6300-plus TB of global coverage imagery available in archives, where 10 m ground resolution 3D image deliverables enable shallow-water seabed assessments. Level 2 involves 10-plus PB of global coverage imagery available in archives, where 30-70 cm ground resolution 3D image deliverables enable shallow-water seabed assessments (needing higher resolution localized analysis), depending on site specific requirements. While true depths are not determinable from optical imagery, qualitative information on hazards and changes in sedimentation distribution patterns, uncharted seabed hazards, existing seabed infrastructure and other constraints are easily identified, providing a valuable tool for nearshore vessel activity and infrastructure development needs. Satellite imagery is an effective tool for qualitative site reconnaissance in the shallow water coastal zones. As offshore development becomes more prevalent, accurate seabed mapping is crucial. While nautical charts were once the primary source of information about the seabed, these data are often outdated and inadequate to inform early planning of new offshore developments. Advanced satellite-based mapping techniques can provide up-to-date seabed morphology data for advanced planning and decision-making on offshore projects.
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Berichte der Organisationen zum Thema "Coastal ponds"

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Winchell, Alyssa, Olivia Helinski, Thom Curdts und Monique LaFrance Bartley. Shoreline length and water area in the ocean, coastal, and Great Lakes parks (second edition): Updated statistics for shoreline miles and water acres. National Park Service, 2024. http://dx.doi.org/10.36967/2299484.

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This report details the cumulative shoreline miles and water acres within the 88 ocean, coastal, and Great Lakes National Park units. Across the National Park Service (NPS), there is a total of 14,350 shoreline miles and 2,534,595 water acres. This report serves as an update to the NPS Natural Resource Report titled, ?Shoreline length and water area in the ocean, coastal and Great Lakes Parks: Updated statistics for shoreline miles and water acres (rev 1b)? (Curdts 2011). Note: For park units located in ocean settings, ?water acres? refers to marine, estuarine, and tidally influenced waters. For park units in the Great Lakes region, ?water acres? refers to freshwater. For all park units, freshwater bodies such as lakes, ponds, and rivers that exist inland of the marine or Great Lake shoreline are excluded from the calculation. Existing shoreline products from federal, state, and NPS sources were visually assessed for each park and compared to reference imagery within ESRI ArcGIS Pro to determine the best available data. The resulting shoreline delineation for each park was reviewed by NPS park, regional, national, and/or Inventory and Monitoring Network staff, and manual adjustments were made as needed to accurately reflect the shoreline. Park boundaries were defined according to the NPS Land Resources Division (LRD), with a few exceptions as noted within the report. Shoreline miles and water acres within each park?s boundary were then calculated within a GIS framework. The results of this report represent a snapshot in time, and variation is to be expected given the dynamic nature of coastal environments. Future updates to these statistics may be calculated as new data become available. These shoreline miles and water acres statistics and associated geospatial data and maps are intended for general reference only; they are useful for describing the scale of NPS holdings and management responsibilities.
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Mitchell, Brian G., Amir Neori, Charles Yarish, D. Allen Davis, Tzachi Samocha und Lior Guttman. The use of aquaculture effluents in spray culture for the production of high protein macroalgae for shrimp aqua-feeds. United States Department of Agriculture, Januar 2013. http://dx.doi.org/10.32747/2013.7597934.bard.

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The FAO has projected a doubling in world demand for seafood during the 21 ed from aquaculture of marine fish and shrimps fed primarily on fishmeal-based aquafeeds. However, current practices of high intensity monoculture of shrimp in coastal ponds and fish in offshore pens have been strongly criticized as being ecologically and socially unsustainable. This view derives from un- checked eutrophication of coastal marine ecosystems from fish farm effluents, and the destruction of coastal estuarine ecosystems by shrimp farm constructions, plus aquaculture’s reliance on wild-caught small fish - which are excellent food for humans, but instead are rendered into fishmeal and fish oil for formulating aquafeeds. Fishmeal-sparing and waste- reduction aquafeeds can only delay the time when fed aquaculture product are priced out of affordability for most consumers. Additionally, replacement of fishmeal protein and fish oil by terrestrial plant sources such as soybean meal and oil directly raises food costs for human communities in developing nations. New formulations incorporating sustainably-produced marine algal proteins and oils are growing in acceptance as viable and practical alternatives. This BARD collaborative research project investigated a sustainable water-sparing spray/drip culture method for producing high-protein marine macrophyte meals for incorporation into marine shrimp and fish diets. The spray culture work was conducted at laboratory-scale in the USA (UCSD-SIO) using selected Gracilariaand Ulvastrains isolated and supplied by UCONN, and outdoors at pilot-scale in Israel (IOLR-NCM) using local strains of Ulvasp., and nitrogen/phosphorus-enriched fish farm effluent to fertilize the spray cultures and produce seaweed biomass and meals containing up to 27% raw protein (dry weight content). Auburn University (USA) in consultation with TAMUS (USA) used the IOLR meals to formulate diets and conduct marine shrimp feeding trials, which resulted in mixed outcomes, indicating further work was needed to chemically identify and remove anti-nutritional elements present in the IOLR-produced seaweed meals.
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Theiling, Charles. A review of algal phytoremediation potential to sequester nutrients from eutrophic surface water. Engineer Research and Development Center (U.S.), Oktober 2023. http://dx.doi.org/10.21079/11681/47720.

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Harmful algal blooms (HABs) and coastal hypoxic zones are evidence of cultural nutrient enrichment affecting public health and water supplies, aquatic ecosystem health, and economic well-being in the United States. Recognition of the far-reaching impacts of Midwest agriculture has led to establishing nutrient reduction objectives for surface waters feeding the Gulf of Mexico, Lake Erie, and many smaller water bodies. Municipal nutrient enrichment impacts have been addressed by increasing levels of sewage treatment and waste management through the Clean Water Act era, but HABs rebounded in the 1990s because of non-point source nutrient enrichment. HAB control and treatment includes watershed and waterbody treatments to reduce loading and address outbreaks. Systems to remove nutrients from impaired waters are expensive to build and operate. This review of algal production systems summarizes emerging algal water treatment technologies and considers their potential to effectively sequester nutrients and atmospheric carbon from hundreds of eutrophic reservoirs and DoD wastewater treatment facilities while producing useful biomass feedstock using solar energy. Algal water treatment systems including open ponds, photobioreactors, and algal turf scrubbers® can be used to grow biomass for biofuel, wastewater treatment, and commercial products. This review recommends continuing research on surface water nutrient reduction potential with algal turf scrubber productivity pilot studies, preliminary site design, and biomass utilization investigations.
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Swanson, David, und Celia Hampton-Miller. Drained lakes in Bering Land Bridge National Preserve: Vegetation succession and impacts on loon habitat. National Park Service, Januar 2023. http://dx.doi.org/10.36967/2296593.

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The northern coastal plain of Bering Land Bridge National Preserve (BELA) lost lakes at an alarming rate over the first two decades of this century, including four lakes over 100 ha in size in 2018-2019 alone. To understand the effects of these lake drainages, we sampled vegetation of these lakes in 2019 (a reconnaissance visit) and 2021 (for the installation of permanent vegetation monitoring plots). We used these data to summarize the changes that occurred in the first three years after drainage, and to create vegetation maps from 3-m resolution satellite images coinciding with the visit dates. We used time series of these satellite images to study the rate of drainage and vegetation colonization on the lakes. We analyzed our existing data from older drained lake basins (estimated to be more than 200 years since drainage) and reviewed the literature on vegetation change in drained lakes to understand the vegetation changes that are likely in the future. Finally, we used a model of lake occupancy by loons developed by Mizel et al. (2021) to predict the effect of the 2018-2019 lake drainages on available loon habitat, using both our detailed maps of the four sampled drained lakes, and also data on all drained lakes over most of northern BELA derived from Landsat satellite images. Our results show that the four study lakes drained early in the summer, before the end of June, in 2018 (3 lakes) and 2019 (one lake). A combination of record warm weather and heavy snowfall made 2018 and 2019 especially favorable for lake drainage: thaw subsidence probably enlarged existing drainage outlet channels from the lakes, and large amounts of spring snowmelt runoff deepened the outlet channels by thermal erosion (the combination of thaw and erosion). Drainage exposed moist loamy sediment on the lake bottoms that was rapidly colonized by plants. Substantial vegetation cover developed by late summer in the same year as lake drainage in one lake, in the first post-drainage summer in a second lake, and during the 2nd year after drainage in the remaining two lakes. The first vegetation communities to develop consisted of just one or two dominant species, notably Eleocharis acicularis (spike rush), Equisetum arvense (horsetail), and/or Tephroseris palustris (mastodon flower). Other important early species were Arctophila fulva (pendant grass) and Rorippa palustris (yellow cress). By year 3, the communities had become more diverse, with significant cover by taller wetland graminoid species, including A. fulva, Eriophorum scheuchzeri, and Carex aquatilis. Frozen soil was observed in most locations on the lakes in July of 2021, suggesting that permafrost was forming on the lake bottoms. Comparison of the three-year trends in vegetation change with data from older lake basins suggest that ultimately most lake basins will develop wet tundra communities dominated by Carex aquatilis and mosses, with various low shrub species on acid, peat-dominated soils and permafrost; however, this process should take several centuries. The loon habitat model suggests that drainage essentially eliminated the potential habitat for Yellow-billed Loons on the four study lakes, because the residuals ponds were too small for Yellow-billed Loons to take flight from. A total of 17 lakes drained in northern BELA in 2018-2019. As a result, the potential Yellow-billed Loon nesting habitat in northern BELA probably decreased by approximately 2%, while habitat for Pacific Loons decreased less, by about 0.6%. Habitat for the more abundant Red-throated Loons probably increased slightly as a result of lake drainage, because of their ability to use the small residual ponds created by lake drainage.
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Ho, Iwan, und Ching Yan Li. Microbial and chemical properties of log ponds along the Oregon Coast. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1987. http://dx.doi.org/10.2737/pnw-rn-467.

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Boyle, M., und Elizabeth Rico. Terrestrial vegetation monitoring at Cumberland Island National Seashore: 2020 data summary. National Park Service, September 2022. http://dx.doi.org/10.36967/2294287.

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The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and it is currently conducted at 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural vegetation. 2020 marks the first year of conducting this monitoring effort at Cumberland Island National Seashore (CUIS). Fifty-six vegetation plots were established throughout the park from May through July. Data collected in each plot included species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree (greater than 10 centimeters [3.9 inches {in}]) diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass (i.e., fuel load) estimates. This report summarizes the baseline (year 1) terrestrial vegetation data collected at Cumberland Island National Seashore in 2020. Data were stratified across three dominant broadly defined habitats within the park, including Coastal Plain Upland Open Woodlands, Maritime Open Upland Grasslands, and Maritime Upland Forests and Shrublands. Noteworthy findings include: 213 vascular plant taxa (species or lower) were observed across 56 vegetation plots, including 12 species not previously documented within the park. The most frequently encountered species in each broadly defined habitat included: Coastal Plain Upland Open Woodlands: longleaf + pond pine (Pinus palustris; P. serotina), redbay (Persea borbonia), saw palmetto (Serenoa repens), wax-myrtle (Morella cerifera), deerberry (Vaccinium stamineum), variable panicgrass (Dichanthelium commutatum), and hemlock rosette grass (Dichanthelium portoricense). Maritime Open Upland Grasslands: wax-myrtle, saw greenbrier (Smilax auriculata), sea oats (Uniola paniculata), and other forbs and graminoids. Maritime Upland Forests and Shrublands: live oak (Quercus virginiana), redbay, saw palmetto, muscadine (Muscadinia rotundifolia), and Spanish moss (Tillandsia usneoides) Two non-native species, Chinaberry (Melia azedarach) and bahiagrass (Paspalum notatum), categorized as invasive by the Georgia Exotic Pest Plant Council (GA-EPPC 2018) were encountered in four different Maritime Upland Forest and Shrubland plots during this monitoring effort. Six vascular plant species listed as rare and tracked by the Georgia Department of Natural Resources (GADNR 2022) were observed in these monitoring plots, including the state listed “Rare” Florida swampprivet (Forestiera segregata var. segregata) and sandywoods sedge (Carex dasycarpa) and the “Unusual” green fly orchid (Epidendrum conopseum). Longleaf and pond pine were the most dominant species within the tree stratum of Coastal Plain Upland Open Woodland habitat types; live oak was the most dominant species of Maritime Upland Forest and Shrubland types. Saw palmetto and rusty staggerbush (Lyonia ferruginea) dominated the sapling stratum within Maritime Upland Forest and Shrubland habitat types. Of the 20 tree-sized redbay trees measured during this monitoring effort only three were living and these were observed with severely declining vigor, indicating the prevalence and recent historical impact of laurel wilt disease (LWD) across the island’s maritime forest ecosystems. There was an unexpectedly low abundance of sweet grass (Muhlenbergia sericea) and saltmeadow cordgrass (Spartina patens) within interdune swale plots of Maritime Open Upland habitats on the island, which could be a result of grazing activity by feral horses. Live oak is the dominant tree-sized species across...
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Boyle, Maxwell. Terrestrial vegetation monitoring at Cape Lookout National Seashore: 2022 data summary. National Park Service, 2024. http://dx.doi.org/10.36967/2303636.

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Parks within the Southeast Coast Network (SECN) host a diverse assemblage of plants and terrestrial vegetation communities. Vegetation communities are dynamic entities whose species composition, abundance, distribution, and structure are influenced by environmental factors and impacted over time by natural and anthropogenic disturbances. Determining trends in vegetation communities over time and identifying plant stressors is vital to understanding the ecological health of terrestrial ecosystems within SECN parks. Like most barrier islands along the southeastern coast, the vegetation communities along Cape Lookout National Seashore range from open beach and foredune grasslands on the ocean-facing side to tidal marshes on the sound-facing side. Between is a mixture of interdune swales, backdunes, and enclosed wetlands. Open upland vegetation is found on foredunes and occasional backdunes within the seashore. Cape Lookout National Seashore ecosystems are subjected to high frequencies of storm-, wind-, tide-, and wave-driven processes. Historic and current vegetation composition and structure are largely a result of these highly dynamic processes. Current vegetation patterns and processes across the Outer Banks are impacted and will continue to be impacted by rising sea-levels. Vegetation communities are vulnerable to overwash, which moves sand from the island?s ocean-side to the sound-side, brought on by more frequent and higher intensity storms. In 2019, Hurricane Dorian produced significant storm surge from the sound-side that overwashed the island and deposited sand into the ocean. Sand was scoured out from over 54 major cuts in the island, creating current ponds that are in various stages of succession. 2022 marked the first year of conducting this monitoring effort at Cape Lookout National Seashore. Forty-nine vegetation plots were established throughout the park in May and June. Data collected in each plot included species richness across multiple spatial scales, species-specific cover and constancy, species-specific woody stem seedling/sapling counts and adult tree diameter at breast height (DBH), overall tree health, landform, soil, observed disturbance, and woody biomass estimates. Data were stratified across four dominant broadly defined habitats within four park subunits: North Core Banks, South Core Banks, Cape Lookout, and Shackleford Banks. Broadly defined habitats monitored included: Open Upland Vegetation, Upland Forests and Shrublands, Nontidal Wetland Vegetation and Tidal Wetlands. One hundred and eighty-six vascular plant taxa were detected during this monitoring effort, including 11 taxa not detected in previous lists. Human-caused disturbances (e.g., historical plowing, shifting fire regimes, and altered hydrology) affecting plant communities within other SECN parks were not observed within these plots during this survey effort. Stunted plant growth was observed on several plots of Shackleford Banks and is likely caused by feral horse grazing. It is unclear from these data if grazing has impacted overall vegetation diversity and structure patterns across the island.
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Simulated changes in the sources of ground water for public-supply wells, ponds, streams, and coastal areas on western Cape Cod, Massachusetts. US Geological Survey, 2002. http://dx.doi.org/10.3133/wri024143.

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