Download or read book A Comparison of the Benthic Macroinvertebrate Community Structure of Two Oxbow Lakes in the Red River Basin in Northwest Louisiana written by Clarence Wayne Reed and published by . This book was released on 1981 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Masters Abstracts written by and published by . This book was released on 1982 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Texas Journal of Science written by and published by . This book was released on 1987 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes the proceedings and transactions of the Academy.

Download or read book Community Structure of Benthic Macroinvertebrates in Navigation Pool No 8 Upper Mississippi River written by Sandra K. Brewer and published by . This book was released on 1992 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Benthic Macroinvertebrate Community Structure of Four Streams Located at Fort Polk in Vernon Parish Louisiana written by Kathleen Evelyn Orth and published by . This book was released on 1996 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Benthic Macroinvertebrate Community Structure in Relation to Water Quality and Habitat in the Upper Pecos River Texas written by Greg L. Larson and published by . This book was released on 1996 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Benthic Macroinvertebrate Metacommunity Structure of the Guadalupe River Basin TX written by Rebecca A. Zawalski and published by . This book was released on 2017 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Benthic macroinvertebrates (BMI) are widely used as bio-indicators for local in-stream quality. However, local community structure can be affected by smaller scale (local) environmental conditions and larger scale processes. I assessed the abundance and diversity of BMI and their relationship with local in-stream conditions, regional patterns of land-use/land cover (LULC), and large scale physiographic gradients across the Guadalupe River System, a large basin (3,256 km2) in Central Texas. Macroinvertebrates, water quality, and habitat conditions across 28 sites in the Guadalupe River and its main tributaries were sampled. Highest species diversity occurred near the headwaters, and decreased downstream. Pollution tolerance levels increased downstream and followed an increasing agriculture gradient. Landscape factors explained a large proportion of variation in macroinvertebrate community structure (38%), but 16% of it was spatially structured (shared with spatial factors latitude and longitude) and 4% was explained by spatial factors alone. Local environmental factors were strongly correlated with landscape factors and explained similar amount of variation as landscape factors. My study highlights the importance of incorporating physiographic gradients when examining local and regional diversity and composition of BMI communities, especially in large complex watersheds. My results will help develop more effective monitoring programs for larger river systems.

Download or read book A Comparative Study of the Macroinvertebrate Communities in Three Oxbow Lakes and the Brazos River in East Central Texas written by Shirley Anne Lanza and published by . This book was released on 2003 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Two year Seasonal Comparison of the Macroinvertebrate Community Structure of Four Ozark Streams Experiencing Differing Degrees of Anthropogenic Disturbance written by Christina Diane Bradley and published by . This book was released on 2001 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biodiversity and Genetic Structure of Benthic Macroinvertebrates Along an Altitudinal Gradient written by Lauren Pulliam and published by . This book was released on 2016 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Altitudinal gradients in Sub-Antarctic freshwater systems present unique opportunities to study the effect of distinct environmental gradients on benthic macroinvertebrate community composition and dispersal. This study investigates patterns in biodiversity, dispersal and population genetic structure of benthic macroinvertebrate fauna across an altitudinal gradient between two watersheds on Navarino Island in southern Chile. Patterns in diversity, density, evenness and functional feeding groups were not significantly different across the altitudinal gradient in both the Windhond and Róbalo Rivers. Taxa richness in both rivers generally increased from the headwaters of the river to the mouth, and functional feeding group patterns were consistent with the predictions of the River Continuum Concept. Population genetic structure and gene flow was investigated by sampling the mitochondrial cytochrome oxidase I gene in two invertebrate species with different dispersal strategies. Hyalella simplex (Amphipoda) is an obligate aquatic species, and Meridialaris chiloeense (Ephemeroptera) is an aquatic larvae and a terrestrial winged adult. Contrasting patterns of population genetic structure were observed. Results for Hyalella simplex indicate significant differentiation in genetic structure in the Amphipod populations between watersheds and lower genetic diversity in the Róbalo River samples, which may be a result of instream dispersal barriers. Meridialaris chiloeense exhibited weak population structure but higher genetic diversity, which suggests this species is able to disperse widely as a winged adult.

Download or read book Benthic Macroinvertebrate Communities of Two Upper Mississippi Backwater Lakes written by B. Will Green and published by . This book was released on 2005 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Benthic Macroinvertebrate Community Structure of Lake Houston Texas written by James Glen Howard and published by . This book was released on 1988 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Survey of the Benthic Macroinvertebrate Community Structure of Lake Nacogdoches a Hydrilla infested East Texas Reservoir written by Michael Alan Prater and published by . This book was released on 1991 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Changes in Benthic Macroinvertebrate Community Structure in Acid and Metal contaminated Lakes Following Water Quality Improvements written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of macroinvertebrate communities in adjacent urban stream basins Kansas City Missouri metropolitan area 2007 through 2011 written by Eric D. Christensen and published by CreateSpace. This book was released on 2013 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Macroinvertebrates were collected as part of two separate urban water-quality studies from adjacent basins, the Blue River Basin (Kansas City, Missouri), the Little Blue River and Rock Creek Basins (Independence, Missouri), and their tributaries. Consistent collection and processing procedures between the studies allowed for statistical comparisons. Seven Blue River Basin sites, nine Little Blue River Basin sites, including Rock Creek, and two rural sites representative of Missouri ecological drainage units and the area's ecoregions were used in the analysis. Different factors or levels of urban intensity may affect the basins and macroinvertebrate commu- nity metrics differently, even though both basins are substan- tially developed above their downstream streamgages (Blue River, 65 percent; Little Blue River, 52 percent). The Blue River has no flood control reservoirs and receives wastewa- ter effluent and stormflow from a combined sewer system. The Little Blue River has flood control reservoirs, receives no wastewater effluent, and has a separate stormwater sewer system. Analysis of macroinvertebrate community structure with pollution-tolerance metrics and water-quality parameters indicated differences between the Blue River Basin and the Little Blue River Basin.

Download or read book Comparison of Macroinvertebrate Community Structure Between Two Riffle based Sampling Protocols in Wyoming Colorado and Montana 2000 2001 written by David Allen Peterson and published by . This book was released on 2006 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Macroinvertebrate Communities in Adjacent Urban Stream Basins Kansas City Missouri Metropolitan Area 2007 Through 2011 written by Eric Christensen and published by Createspace Independent Publishing Platform. This book was released on 2014-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Macroinvertebrates were collected as part of two separate urban water-quality studies from adjacent basins, the Blue River Basin (Kansas City, Missouri), the Little Blue River and Rock Creek Basins (Independence, Missouri), and their tributaries. Consistent collection and processing procedures between the studies allowed for statistical comparisons. Seven Blue River Basin sites, nine Little Blue River Basin sites, including Rock Creek, and two rural sites representative of Missouri ecological drainage units and the area's ecoregions were used in the analysis. Different factors or levels of urban intensity may affect the basins and macroinvertebrate commu- nity metrics differently, even though both basins are substan- tially developed above their downstream streamgages (Blue River, 65 percent; Little Blue River, 52 percent). The Blue River has no flood control reservoirs and receives wastewa- ter effluent and stormflow from a combined sewer system. The Little Blue River has flood control reservoirs, receives no wastewater effluent, and has a separate stormwater sewer system. Analysis of macroinvertebrate community structure with pollution-tolerance metrics and water-quality parameters indicated differences between the Blue River Basin and the Little Blue River Basin.