Author: Kathleen Evelyn OrthPublisher:
ISBN:
Category : Water quality
Languages : en
Pages : 312
Book Description
A Study of the Benthic Macroinvertebrate Community Structure of Four Streams Located at Fort Polk in Vernon Parish, Louisiana
Author: Kathleen Evelyn OrthPublisher:
ISBN:
Category : Water quality
Languages : en
Pages : 312
Book Description
A Benthic Macroinvertebrate Study of Four Streams at Fort Polk, Louisiana
Author: Wendy D. PenlandPublisher:
ISBN:
Category : Freshwater invertebrates
Languages : en
Pages : 324
Book Description
Effects of Hardened Low-water Crossings on Stream Habitat, Water Quality, and Periphyton in Four Streams at the Fort Polk Military Reservation, Vernon Parish, Louisiana, October 1998 Through November 1999
Author: Roland W. TollettPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 78
Book Description
Masters Theses in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States and Canada
Author: A Comparison of Benthic Macroinvertebrate Community Structure from Four Littoral Zone Habitats of Hodgson Lake
Author: Robert Bruce GillespiePublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 164
Book Description
Benthic Macroinvertebrate Community Structure in a Fourth Order Stream System with a Nitrogen Enriched Tributary
Author: Mary Ann PhillippiPublisher:
ISBN:
Category : Freshwater invertebrates
Languages : en
Pages : 506
Book Description
Benthic Macroinvertebrate Community Structure Along a Southern Appalachian Stream Continuum
Author: Debra Leslie WohlA Comparison of the Benthic Macroinvertebrate Community Structure of Two Oxbow Lakes in the Red River Basin in Northwest Louisiana
Author: Clarence Wayne ReedPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 240
Book Description
Determining the Association Between the Structure of Stream Benthic Macroinvertebrate Communities and Agricultural Best Management Practices
Author: Roger Holmes (M.Sc.)Publisher:
ISBN:
Category :
Languages : en
Pages : 174
Book Description
Farmers have been encouraged to adopt more sustainable farming practices (BMPs) that mitigate adverse agricultural effects on the natural environment. However, the ability of BMPs to protect or restore riverine systems continues to be questioned due to limited evidence directly linking BMP use with improved ecological conditions. The exclusion of hydrological pathways in previous field studies may explain why a direct link has not yet been established. The goal of this study was to assess the association between benthic macroinvertebrate community structure and the number and location of agricultural BMPs. Macroinvertebrates and water chemistry were sampled in 30 headwater catchments in the Grand River Watershed. Catchments exhibited gradients of BMP use and location as measured by the degree of hydrologic connectedness. Stepwise ordination regressions and variance partitioning were used to determine which environmental variables (i.e., BMP metrics, water chemistry parameters, habitat characteristics, and land use variables) were associated with benthic macroinvertebrate community structure. Water chemistry parameters were negatively associated with BMP metrics suggesting BMPs were mitigating losses of nutrients and sediments. However, BMP abundance and location explained minimal variation in benthic macroinvertebrate structure within the 30 sampled catchments. The absence of a strong association between BMPs and benthic macroinvertebrates may indicate a need for greater numbers and targeted siting of BMPS to improve water quality beyond a threshold point that would allow recolonization of intolerant invertebrate taxa. Focusing of conservation goals on ecological conditions and the promotion of BMPs that enhance in-stream habitat may also be required.
Relationships of Benthic Macroinvertebrate Community Structure with Land-use, Habitat, In-stream Water Chemistry, Depositional Sediment Biofilm Fatty Acids, and Surfactants in the Effluent Dominated Texas Trinity River
Author: Jaime L. SlyePublisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 151
Book Description