Author: David R. LenatPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 12
Book Description
Water Quality Assessment of Streams Using a Qualitative Collection Method for Benthic Macroinvertebrates
Author: David R. LenatPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 12
Book Description
Assessment of Stream Conditions and Trends in Biological and Water-chemistry Data from Selected Streams in Chester County, Pennsylvania, 1981-97
Author: Andrew G. ReifBenthic Invertebrates of Benchmark Streams in Agricultural Areas of Eastern Wisconsin, Western Lake Michigan Drainages
Author: S. J. RheaumePublisher:
ISBN:
Category : Agricultural pollution
Languages : en
Pages : 48
Book Description
Water-resources Investigations Report
Author: Methods for Collecting Benthic Invertebrate Samples as Part of the National Water-Quality Assessment Program
Author: Thomas F. CuffneyPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 168
Book Description
Ecological Quality Assessment of Stream Ecosystems Using Benthic Macroinvertebrates
Author: Mi-Young SongPublisher:
ISBN:
Category :
Languages : en
Pages : 99
Book Description
In this study, we applied the SOM for ecological assessment using benthic macroinvertebrates in aquatic ecosystem. First, Chapter I, SOM was utilized to extract information from complex data of environmental variables and benthic macroinvertebrate communities residing in different micro-habitats. Although the sampling was carried out in a limited area, the patterns of environmental variables revealed spatial heterogeneity. The clustering of benthic macroinvertebrate communities in the trained SOM was efficient in showing temporal variation and evaluating water quality according to the conditions of different micro-habitats. Consequently, local spatial heterogeneity is important in revealing dynamics of community abundance and biotic indices, especially regarding restoration processes in polluted streams. Chapter II, the samples were grouped into three main clusters corresponding to distinc EPTC assemblages in the tributary streams of the Garonne River catchment, southern France. Lower richness and diversity of macroinvertebrates were observed in the areas affected by agricultural land use, being associated with high Total Dissolved Solids (TDS), Nitrate (NO3) and Chemical Oxygen Demand (COD). Tolerant EPTC species were identified as controlling parameters for the changes in the assemblages collected at the agricultural-impacted sites...
An Introduction to the Aquatic Insects of North America
Author: Richard W. MerrittPublisher: Kendall Hunt
ISBN: 9780787232412
Category : Nature
Languages : en
Pages : 894
Book Description
Proceedings of the NWQMC National Conference
Author: Publisher:
ISBN:
Category : Water quality management
Languages : en
Pages : 720
Book Description
Water-resources Investigations Report
Author: Andrew G. ReifPublisher:
ISBN:
Category : Droughts
Languages : en
Pages : 348
Book Description
Biological Monitoring of Aquatic Systems
Author: Stanford, L. LoebPublisher: CRC Press
ISBN: 9780873719100
Category : Science
Languages : en
Pages : 408
Book Description
With regional, national, and global processes affecting both the structure and function of lakes and rivers, assessment methodology must encompass many attributes to evaluate the impact of these processes on water quality. Many of the changes in biological communities correlate to resource exploitation, nonpoint pollutant interactions, and habitat alteration - factors that can be missed by routine chemical sampling. This creates the need for ecologically-based approaches to this problem. Biological monitoring is a fundamental part of an ecologically-based approach. Biological Monitoring of Aquatic Systems brings together contributions by authors recognized as leaders in the development and utilization of biological monitoring techniques for freshwater ecosystems. It provides a conceptual framework for the use of biological monitoring to assess the environmental health of freshwater resources. Biological monitoring is an important part of any water quality assessment program. Biological Monitoring of Aquatic Systems provides you with an understanding of water resources. It includes discussions concerning historical development, ecological basis, experimental design characteristics, case studies, and future concerns. As efforts to maintain and restore the world's water resources intensify, the need to develop accurate methods to assess the health of these resources becomes critical.