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Showing 1 to 20 of 22 for “"Wetland Ecology"”.
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Community management of wetland ecology and socio-economic costs of wetland degradation in mudaswali Wetland, Limpopo Province, South Africa
Wetlands are one of the most degraded ecosystems on the earth's surface. In South Africa, loss and degradation of wetland ecosystems have occurred particularly through a variety of human activities. This loss of value of wetlands have impacts on functions such as water purification, flood control, …
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Evaluating the relative importance of stormwater for nutrient and metal contamination to the urban, groundwater dependent Yellagonga Wetlands, through wetland budgeting
Wetlands provide numerous ecosystem services and can be utilised as pollutant sinks, however excessive contamination of wetlands can induce adverse effects to wetland ecology and lead to degradation of its values. Runoff from precipitation mobilizes contaminants from impervious surfaces which are, …
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Dynamics of cicrobial communities associated with <i>Typha angustifolia</i> (cattail) litter in a wetland ecosystem: Effects of litter manipulations on microbial decay processes
… energy flow and nutrient recycling in wetlands. Prior studies examining emergent plant decomposition have often used litter that had been prematurely harvested (senescent) and/or manipulated (oven-dried). I examined the effects of litter manipulations on microbial decay dynamics …
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Annual secondary production of fungal and bacterial decomposers associated with standing and benthic litter of the freshwater emergent macrophyte, <i>typha angustifolia </i>
… are significant decomposers of plants within wetlands, but annual secondary production investigations are lacking. Microbial carbon assimilation into biomass and CO<sub>2</sub> mineralization may contribute considerably to wetland biogeochemical cycling and energy flow. Naturally-occurring …
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Tidal Wetland Inundation and Vegetation Phenology from Space: A Synthesis of Approaches for Characterizing Ecological Status and Inundation Dynamics in Tidal Wetlands with Remote Sensing Observations
… approaches. Chapter 1 introduces the topics of wetland ecology and remote sensing. Chapters 2-4 are the main research chapters of the dissertation covering the topics of tidal marsh mapping, tidal marsh vegetation characterization, and assessment of tidal marsh inundation patterns. Chapter 5 …
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Guidelines for a Comprehensive Mitigation Management Plan for Texas Coastal Wetlands
… mitigation management plan for Texas coastal wetlands. Current coastal wetland protection and mitigation strategies that are used in Texas, in other states, and at the federal level were identified and evaluated . A survey was conducted, during the summer of 1994, of many of the leading …
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Four-Toed Salamander (hemidactylium Scutatum) Nest Site Characteristics In Natural And Constructed Wetlands In Eastern Kentucky
<p>Forested freshwater wetlands have undergone loss and alteration more than other types of wetlands. Wetland creation has slowed wetland losses, but many created wetlands do not functionally replace natural wetlands. Plant and animal communities and wetland drying cycles often differ between …
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Tradeoffs among ecosystem services in restored wetlands
Recently restoration ecology and land management have found new focus and direction by emphasizing the value of ecosystem services to society. Resource management decisions frequently involve choices that reflect tradeoffs among ecosystem services. Tradeoffs occur when one service changes at the …
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RESPONSE OF A SPARTINA PATENS-DOMINATED OLIGOHALINE MARSH TO NITROGEN ENRICHMENT IN COASTAL NORTH CAROLINA, USA.
Coastal marshes are highly productive ecosystems that play a significant role in the global carbon budget. Anthropogenic alterations to coastal landscapes can significantly impact these marsh ecosystems, though the actual loss of ecosystem functioning may depend on the type of marsh being impacted. …
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Evaluating the influence white-tailed deer have on wetland vegetation types with respect to wetland birds at Shiawassee National Wildlife Refuge, Saginaw, Michigan
… could cause biologists concern when managing wetlands as suitable habitat for migratory waterfowl since high levels of herbivory can negatively impact plant communities. There is a knowledge gap on how deer use of wetland vegetation types may affect bird use of those same wetlands. Our …
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Origin and fate of organic matter in South-West Australian wetlands
… forested landscapes. An extensive system of wetlands with peal soils occurs in the Muir-Unicup region in the far south west of Western Australia. Bokarup Swamp, Kodjinup Swamp and Noobijup Lake are representative of the wetlands occurring in this region. They arc shallow (
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Comparison of GPS Point Selection Methods for GIS Area Measurement of Small Jurisdictional Wetlands
… waters of the United States including wetlands. Recent USACE regulations set a threshold of impacts to wetlands at one-half acre. Impact area can be determined by Global Positioning System (GPS) measurement of wetland boundary and Geographic Information System (GIS) calculation of …
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Evaluating Surface Area-Basin Volume Relationships for Prairie Potholes
… prediction of floods and improved design for wetland restoration. Length, width, depth, surface area, and volumes were surveyed for eighty two potholes within the upper Turtle River watershed which lies sixty kilometers west of Grand Forks, ND. These data were used to determine the …
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Assessment of the Efficacy of a Constructed Wetland to Reduce or Remove Wastewater Effluent Estrogenicity and Toxicity Using Biomarkers in Male Fathead Minnows (Pimephales Promelas Rafinesque, 1820)
… were used to assess the efficacy of a treatment wetland to remove toxicity and estrogenicity in final treated wastewater effluent. Comparisons were made with an effluent dominated stream and laboratory controls. Vitellogenin, GSIs (gonado-somatic indices), HSIs (hepato-somatic indices) and …
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Vegetation-Based Metrics Of Biotic Integrity For Assessing The Ecological Condition Of Wetlands Of Kentucky
<p>Over the last two centuries, wetland acreage across the world has significantly declined due to human disturbances. It has been estimated that Kentucky has lost over 80% of its wetland area. In response to these losses occurring across the United States, the Clean Water Act was passed to halt …
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Metapopulation theory explains Black-stripe Minnow (Pisces: Galaxiidae, Galaxiella nigrostriata) distribution in seasonal wetlands in south-west Western Australia
… nigrostriata occurred randomly in 11 seasonal wetlands in the Kemerton wetland complex in south-west Western Australia over a 16 year period. The wetlands did not appear to be connected. Around 70% of wetlands on the Swan Coastal Plain in south-west WA have been filled or degraded since …
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