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Showing 1 to 18 of 18 for “"stream order"”.
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Effects of Stream Order and Data Resolution on Sinuosity Using GIS
… research focuses on estimation and analysis of stream sinuosity using GIS. Fifty-five streams including 13 streams of order 0, 17 streams of order 1, 15 streams of order 2 and 10 streams of order 3 in Virginia were considered. Several GIS datasets from various sources, including the Virginia …
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Variability in Growth and Age of the Duskystripe Shiner Along a Stream Gradient
… duskystripe shiner (Luxilus pilsbryi) along a stream gradient. Duskystripe shiners (n= 600) were sampled from eleven sites representing 4 stream orders. Fish were collected in the spring of 2010 using seining techniques, and the physical assessment of fish and habitat was performed within 24 …
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Patterns of Taxonomic, Functional, and Phylogenetic Diversity, and Ecological Drivers of Stream Fish Assemblages in East Texas
… and species distributions. In 2023-2024, 60 streams in the Neches and Sabine River basins were surveyed across three seasons to investigate the patterns and ecological drivers of taxonomic (TDβ), functional (FDβ), and phylogenetic β-diversity (PDβ) facets of freshwater fish assemblages. …
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Influence of Geomorphological Origin Upon Macroinvertebrate Community Structure in Black Hills Streams
The purpose of this study was to test a stream classification system proposed for the Black Hills National Forest. Stream physiochemical characteristics and macroinvertebrate community structure were compared among three geomorphically distinct landtype associations in the Black Hills. Stepwise …
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Spatial ecology of the smooth softshell turtle (Apalone mutica) in the Kaskaskia River of Illinois
… Vagility was greater in the higher stream order, whereas sedentary behavior was similar in both stream orders. A mixed-effects model indicated movement rate increased with water temperature except at high temperatures. Movement rate decreased with Julian date and was higher in the …
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Comparison Watershed Selection When Applying the AllForX Approach for Sediment TMDL Development
… uses a regression relationship between Virginia Stream Condition Index (VSCI) scores and AllForX values (a unit-less multiplier that is the ratio of a modeled existing sediment load divided by a modeled all-forested load condition) for an impaired watershed and several comparison watersheds to …
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Patterns of Historical and Contemporary Distribution and Occurrence of Imperiled Fish Populations in East Texas Streams
… across both time periods. At the regional scale, stream flow and stream order were key predictors for most focal species across both time periods, with higher probabilities of occurrence generally associated with higher order streams (i.e., 4–6) and high flows. Additionally, higher percentages of …
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The surface morphology of a small drainage basin in the North Dakota Badlands
… To describe the surface morphology of a fourth order drainage basin located in the North Dakota Badland,, the writer made quanti tative application• of known descriptive techniques and morphological laws. </p><p> The surface configuration is a function of the study area's linear, areal, and …
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Characterization of dissolved fluvial carbon from landscape characteristics across High Arctic headwater streams
Stream runoff is an important conduit of carbon from the terrestrial ecosystem to the Arctic Ocean, where fluvial carbon is a product of both the source and pathway of the stream network through a watershed. Small headwater streams in the High Arctic are understudied and account for a significant …
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Abundance, Distribution, and Geometry of Naturally Occurring Macropores in Stream Banks
… and physical processes. Macropores also exist in stream banks and have the potential to enhance the exchange of water and solutes between the channel and riparian groundwater, yet the geographic distribution of bank macropores is unknown. Here we determined the abundance, distribution, and …
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Impact of Stream Restoration on Flood Attenuation and Channel-Floodplain Exchange During Small Recurrence Interval Storms
… along the river. Prior studies have shown that stream restoration can enhance flood attenuation, and increased exchange of water between the channel and floodplain can improve water quality. However, the effects of floodplain restoration during small and sub annual recurrence interval storms …
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The Influence of Livestock Watering Ponds (Dugouts) on Native Stream Fishes, Especially the Endangered Topeka Shiner (Notropis topeka)
… of the mosaic of aquatic habitats important to stream fishes. Livestock watering holes (i.e., dugouts) are constructed in floodplains, yet the influence of these manmade wetlands on native stream fishes is unknown. Such information is important for the management of native stream fishes, such as …
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Cumulative Impacts of Watershed-Scale Hyporheic Stream Restoration on Nitrate Loading to Downstream Waterbodies
… that must be solved at watershed scales, and stream restoration is increasingly implemented as a solution. Yet few studies evaluate the cumulative effects of multiple individual restoration projects on watershed-scale nutrient loading. We constructed a HEC-RAS model of stream restoration …
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Factors Affecting Songbird Richness, Abundance, and Nest Survival in Riparian Forests in a Midwestern Agricultural Landscape
… I investigated the relative importance of stream order and patch width on species richness and abundance. I found that species richness was positively associated with patch width but was not related to stream size. However, abundances of certain species were higher in patches adjacent to …
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Investigating Peatland Margins and Determining the Role of Peatland Margin Characteristics in the Resilience of Blanket Peatland
… defined<br/>using organic matter content. Stream order was found to be a key predictor in the<br/>area of influence of the boundary, and is recommended as a classification tool in<br/>future research.<br/>Using historic aerial photographs, the lateral movement of a river in the …
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Watershed Scale Impacts of Floodplain Restoration on Nitrate Removal and the Practical Applications of Modeling Cumulative Floodplain Restoration Hydraulics
… restoration on nitrate removal in a generic 4th-order Virginia Piedmont watershed for small and sub-annual storm sizes (i.e. 2-year, 1-year, half-year, and monthly recurrence intervals). We used HEC-RAS hydraulics results from a prior study together with a nitrate removal model coded in R. …
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Development of monitoring methods for crayfish populations
… assessing the community structure and health of stream fisheries, freshwater mussels, and insects have been used for several decades. However, such methods are woefully lacking for crayfish. The research of this project involved evaluation of several methods for assessing crayfish populations. …
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Wetland hydrology and soils as components of Virginia bog turtle (Glyptemys muhlenbergii) habitat
… areas within 80 m of USGS 7.5â quadrangle mapped streams. Turtles made large movements more frequently during dry conditions. Results suggested that drying conditions can stimulate bog turtles to either remain inactive in sparsely available saturation or to move long distances to find wetter …