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Showing 1 to 20 of 25 for “"Wetland ecosystems"”.
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Factors affecting root system response to nutrient heterogeneity in forested wetland ecosystems
… response to nutrient heterogeneity in forested wetland ecosystems of southeastern United States. Fine root biomass was not correlated with soil nutrient availability within wetland ecosystems, but was related to ecosystem-scale fertility. Root systems generally did not respond to P-rich patches …
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A Market-Based Approach for Valuing Ecosystem Services on Coastal Properties
… efforts to assess ecosystem services provided by wetlands, this research focuses on estimating the private monetary value of wetland services to residential property owners in Louisiana and Alabama using a hedonic price model. Understanding that tradeoffs must be made with limited resources, …
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An assessment of wetland vulnerability to artisanal mining in Zimbabwe
The preservation of wetlands and pristine riverine eco-hydrological systems in sub-Saharan Africa, is crucial for biodiversity, ecosystem stability, and water availability. These face escalating threats from factors such as rapid population growth, agricultural expansion, and, more importantly, …
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Salt retention in wetland soils and effects on dissolved organic carbon export
<p>Deicing salt runoff has negative effects on ecosystems. Wetland ecosystems can act as important filters for runoff pollution (e.g., nutrients), mitigating damage to plants and microbes. Wetlands are important sinks for nutrients and pollutants (e.g., road salt) and transformation spots for many …
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A comparative study of indigenous people's and early European settlers' usage of three Perth wetlands, Western Australia, 1829-1939
… and the early European settlers utilised three wetland environments in southwest Australia over the century between 1829 and 1939. The thesis offers both an ecological and a landscape perspective to changes in the wetlands of Herdsman Lake, Lake Joondalup and Loch McNess. The chain of …
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Mitigation Strategies for Developed Areas of Galveston Bay
Although wetlands in Texas comprise less than 5 percent of the State's total area, Texas is one of 19 states that has exhibited the most significant loss of wetland ecosystems (Tiner, 1984). Studies conducted in the past decade indicate that much of this loss can be attributed to human impacts from …
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Carbon Sequestration in Tidal Salt Marshes and Mangrove Ecosystems
<p>Wetlands are dynamic systems that provide support to vital environmental functions and services. Wetlands take part in the global carbon cycle by holding organic carbon in biomass, soils and sediments. In recent years, the wetland carbon sequestration capacity has been researched worldwide due …
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A Physiological Assessment of Wetland Habitats for Spring-migrating Ducks in the Agricultural Landscapes of the Southern Prairie Pothole Region
<p>The conversion of grassland and wetland ecosystems in the Prairie Pothole Region (PPR) has been a pervasive challenge for conservationists dating back to the early 1900s. The legacy of ever-increasing agricultural intensity in the southern portions of the PPR, including eastern South Dakota, has …
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Assessment of the ecological integrity of two wetland sites within Eastern Michigan University’s Fish Lake Environmental Education Center (FLEEC)
<p>Wetland ecosystems function as reservoirs of biodiversity for both terrestrial and aquatic organisms, and are among the most vulnerable ecosystems to degradation. The ecological integrity of two wetlands at Eastern Michigan University’s Fish Lake Environmental Education Center, a bog and one …
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Assessing restoration potential in relict wetland soils: investigating the effect of wetland hydrology on soil microbial community composition and denitrification potential
… influence rates of biogeochemical cycling in wetland ecosystems; specifically, they are strong determinants of rates of denitrification typically observed. Human induced land use changes have significantly reduced the acreage of wetland habitats, with dam building in the eastern United States …
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Trace Greenhouse Gas Fluxes in Upland Forests
… (CH₄) and nitrous oxide (N₂O) have focused on wetland ecosystems. Tree stem fluxes of GHGs on free-draining soils are understudied, but they are assumed to be a source of CH₄ and a weak source of N₂O. The work presented in this thesis aimed to determine how climatic variables, soil abiotic …
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The role of agricultural intensification in modulating ecosystem properties of embedded subtropical wetlands
Natural wetlands are unique ecosystems that offer substantial services to the surrounding landscape, are host to immense biodiversity, and are the largest global emitters of biogenic methane to the atmosphere. The unique nature of wetland ecosystems cater to an extensive diversity of microorganisms …
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Effects of Phorate on Ducklings, Macroinvertebrates, and Microtox in Northern Prairie Wetlands
… studied in littoral mesocosms in South Dakota wetlands. In 1991 and 1992, four mesocosms were constructed in each of three wetlands. In each wetland, one mesocosm was a reference and phorate concentrations of 1.2, 2.4, and 4.8 kg/ha were applied to treatment mesocosms. The effects of phorate on …
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Evaluating the Performance of the Resampled nSight-2 Sensor's Spectral Configuration in Discriminating Wetland Plant Species Using Advanced Classifiers and Spectroscopy.
Accurate and reliable information about wetland plant species is critical, as it informs improved preservation, conservation and management of wetland ecosystems. Well managed ecosystems guarantee achieving Sustainable Development Goals. Therefore, remote sensing technique has gained prominence in …
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Wetland model in an earth systems modeling framework for regional environmental policy analysis
… this research is to investigate incorporating a wetland component into a land energy and water fluxes model, the Community Land Model (CLM). CLM is the land fluxes component of the Integrated Global Systems Model (IGSM), a framework that simulates the relationship of physical systems to climate …
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Food Habits and Consumption Estimates of Walleyes Stocked as a Tool to Suppress Fathead Minnow Populations in West-Central Minnesota Wetlands
Wetlands in the prairie pothole region of Minnesota provide important wildlife habitat and food resources for waterfowl. The management of wetland ecosystems to exist in a clear-water, macrophyte-dominated state is desired by state and federal waterfowl biologists. Higher macrophyte biomass results …
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Ecological Understanding through Transdisciplinary Art and Participatory Biology
… for long-term conservation of species and ecosystems. Although artists and biologists tend to stay confined to their professional boundaries, and their discourses largely remain inaccessible to larger audiences, arguments here are presented for a combined approach, which may disseminate …
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A Vegetation-Based Index of Biotic Integrity for Wetlands of Kentucky
<p>Wetland ecosystems have experienced severe declines across the United States, prompting efforts to assess the status of remaining wetlands and regulate their development. The Clean Water Act and the policy of “No Net Loss” have resulted in a system of permitting and mitigation for impacts to …
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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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Application on Lidar and Time Series Landsat Data for Mapping and Monitoring Wetlands
To successfully protect and manage wetlands, efficient and accurate tools are needed to identify where wetlands are located, the wetland type, what condition they are in, what are the stressors present, and the trend in their condition. Wetland mapping and monitoring are useful to accomplish these …
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