Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 80 for “"Macroinvertebrate communities"”.
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Macroinvertebrate communities inhabiting surface mine wetlands of southwestern Virginia
… have formed. This study investigates the macroinvertebrate community associated wetlands of relic surface mining operations. Surveys were conducted to identify what macroinvertebrates utilize these wetlands, to determine how this community was influenced by the physio-chemical …
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Multimetric assessment of freshwater macroinvertebrate communities in Flanders, Belgium
… fauna” (EU, 2000), commonly referred to as macroinvertebrates. For this quality element, the parameters “taxonomic composition and abundance”, “ratio of disturbance sensitive to insensitive taxa” and “diversity” should be taken into account. In Flanders, Belgium, the Belgian Biotic Index …
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The Impact of Urbanization on Macroinvertebrate Communities of Creeks Within Western Georgia
… as with other negative effects. Examining the macroinvertebrate communities within streams has proven to be an effective indicator of the effects of urbanization on water quality. This study used that concept to evaluate the health of nine sites on three tributaries of the Chattahoochee River …
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The impacts of metal-contamination and fine sediment deposition on benthic macroinvertebrate communities
To view the abstract, please see the full text of the document.
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Geospatial Modeling of Forest Road Networks and Their Effect on Stream Macroinvertebrate Communities
… road runoff impacts within the study areas. Ten macroinvertebrate metrics sensitive to sedimentation (i.e. % Intolerant Taxa, Hilsenhoff Biotic Index, etc.) were analyzed to test the significance of the spatial distribution of Road Impact Factors. These 10 metrics were analyzed under the …
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Monitoring and assessment of macroinvertebrate communities in support of river management in northern Vietnam
The thesis aimed to develop a water quality biological monitoring and assessment based on macro-invertebrates to analyse the status of watercourses and to select sustainable restoration measures in order to support river. The research was carried in the Du river basin in northern Vietnam. Spatial …
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Impact Of A Diesel Spill On Macroinvertebrate Communities In Ponds In S.E. Alabama, USA
<p>In this study, macroinvertebrate communities were examined to determine an indication of the water quality in ponds on a wetlands property after a diesel spill. In 2012, a train derailed, and at least 3000 gallons of diesel fuel leached into a small pond of the wetlands. Even after clean-up …
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Validation Of Kentucky Wetlands Rapid Assessment Method (ky-Wram) Metrics Using Macroinvertebrate Communities Of Forested Depressional Wetlands
… This project initiated such a comparison using macroinvertebrate communities. Macroinvertebrates play a critical role in wetland ecosystem functioning, thus it is imperative to have an understanding of the macroinvertebrate community responses to degradation of wetlands. Whereas indices of …
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Investigating Historical and Contemporary Land Cover Effects on Macroinvertebrate Communities and Water Quality of Virginia Piedmont Streams
… historical and contemporary land cover and macroinvertebrate communities, water quality, and nutrient levels in 10 streams in a historically agricultural region of the Virginia Piedmont. Historical (1963) and contemporary (2011) impervious surface, open area, and forested cover were …
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Temporal Patterns of Aquatic Macroinvertebrate Communities and Organic Matter Standing Stock Availability in a Coastal Floodplain (Altamaha River, Georgia)
… US. This study aims to investigate how aquatic macroinvertebrate communities changed over the course of the annual flood pulse. I predicted that the communities would be different and that the differences would be driven by hydrology at the main stem and organic matter standing stock …
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Temporal Dynamics of Benthic Macroinvertebrate Communities and Their Response to Elevated Specific Conductance in Headwater Streams of the Appalachian Coalfields
… and others have examined SC effects on benthic macroinvertebrate communities using point-in-time SC measurements. However, both SC and benthic macroinvertebrate communities exhibit temporal variation. Twelve Appalachian headwater streams with minimally impacted physical habitat and …
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Responses of Aquatic Benthic Macroinvertebrate Communities to a Large Flow Pulse in the Guadalupe, San Antonio and Brazos River Basins, Texas
Riverine benthic macroinvertebrates (BMI) communities are regulated, in part, by the dynamic character of the river’s flow regime. Purpose of this study was to assess the influence of a flow regime component (i.e., large flow pulse) on BMI riffle communities, specifically that large flow pulses …
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Temporal and longitudinal extent of surface coal mining influences on water quality and benthic macroinvertebrate communities in central Appalachian headwater streams
… in specific conductance, ion matrix, and benthic macroinvertebrate communities in 24 headwater streams, including 19 influenced by surface mining, from 2011-2019. There was limited evidence of recovery of water chemistry or macroinvertebrate communities in these streams, indicating lasting impacts …
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Interannual Variability of Lotic Macroinvertebrate Communities in the Kootenay-Columbia Basin, BC: the Relative Contribution of Environmental Gradients vs. Stream Water Temperatures
… physiochemical water characteristics. Benthic macroinvertebrate communities (BMI) are often used to assess biological impacts of long-term environmental changes. This study utilizes Environment and Climate Change Canada climatic, hydrometric, and Canadian Aquatic Biomonitoring Network datasets …
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Post-implementation re-assessment of agricultural best management practices on watersheds of Conesus Lake: Effects on stream water chemistry and aquatic macroinvertebrate communities
… streams have healthier populations of aquatic macroinvertebrates than non-BMP streams. We observed higher nutrient concentrations and loss of nutrients in the agricultural streams rather than the reference streams. However, our hypothesis that BMP streams would be significantly better in terms …
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The influences of hydrology and vegetation on emergent insect and benthic macroinvertebrate communities across space and time in seasonally inundated, geographically isolated wetlands
… they support a diverse community of aquatic macroinvertebrates, including insects that serve as energy in upland food webs when they emerge as adults. How aquatic macroinvertebrate communities, particularly emergent aquatic insects, respond to vegetation and differences in long-term patterns …
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Spatial and Temporal variability of macroinvertyebrate communities in vernal pools on the Coastal Plain of Virginia
… of spatial and temporal variability in the macroinvertebrate communities of vernal pools has been found in previous studies, it has not been studied extensively. The primary objective of this study was to determine the extent of variability in the macroinvertebrate communities within vernal …
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EFFECTS OF TIME, SEED SOURCE, AND PLANT COMPOSITION ON MACROINVERTEBRATES IN RESTORED PRAIRIE
… of this research was to quantify how belowground macroinvertebrate ecosystem engineers and communities change over time following ecological restoration and examine whether the source of dominant plant species and the composition of non-dominant plant species influence aboveground …
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