Assessment of Aquatic Invertebrate Communities of Tributaries of the Buffalo River, Arkansas, and Evaluation of Indices of Community Integrity PDF Download
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Author: Janice Arlene Mixon-Hinsey
Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 414
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Book Description
A multi-metric Buffalo River Index of Community Integrity (BRICI) was developed by the National Park Service to assess the aquatic invertebrate community of the Buffalo River, Arkansas. The BRICI has been successfully used on the main-stem of the river, but not evaluated on tributaries in the watershed. The purpose of this study was to evaluate the BRICI, comprised of 10 metrics, on tributaries in the Buffalo River watershed and then compare them to the Missouri Stream Community Index (SCI) that uses only four individual metrics. Available water-quality, habitat, and watershed-level geospatial data were used to determine which index serves as the better predictor of community integrity in the watershed. Based on significant findings, the BRICI appears to be more responsive than the SCI to the local and regional environmental factors of the composition, vegetation, specific conductance, and nitrogen levels. It was more consistent in detecting changes in impairment over time at one year and ten year intervals of available data. Similarity among invertebrate distributions generally reflects the BRICI impairment findings indicating that the BRICI is appropriate for use for all tributaries within the watershed and across ecoregions.
Author: Janice Arlene Mixon-Hinsey
Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 414
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Book Description
A multi-metric Buffalo River Index of Community Integrity (BRICI) was developed by the National Park Service to assess the aquatic invertebrate community of the Buffalo River, Arkansas. The BRICI has been successfully used on the main-stem of the river, but not evaluated on tributaries in the watershed. The purpose of this study was to evaluate the BRICI, comprised of 10 metrics, on tributaries in the Buffalo River watershed and then compare them to the Missouri Stream Community Index (SCI) that uses only four individual metrics. Available water-quality, habitat, and watershed-level geospatial data were used to determine which index serves as the better predictor of community integrity in the watershed. Based on significant findings, the BRICI appears to be more responsive than the SCI to the local and regional environmental factors of the composition, vegetation, specific conductance, and nitrogen levels. It was more consistent in detecting changes in impairment over time at one year and ten year intervals of available data. Similarity among invertebrate distributions generally reflects the BRICI impairment findings indicating that the BRICI is appropriate for use for all tributaries within the watershed and across ecoregions.
Author: James Carroll Petersen
Publisher:
ISBN:
Category : Buffalo River (Ark.)
Languages : en
Pages : 108
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Book Description
Author: Charles Thomas Bryant
Publisher:
ISBN:
Category : Benthos
Languages : en
Pages : 198
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Book Description
Author: Faron D. Usrey
Publisher:
ISBN:
Category : Biodiversity conservation
Languages : en
Pages : 128
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Book Description
Author: David E. Bowles
Publisher: CreateSpace
ISBN: 9781494234690
Category : Nature
Languages : en
Pages : 164
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Book Description
Two broad objectives are addressed by this protocol: 1) Determine the annual status and trends of invertebrate species diversity, abundance and community metrics, and 2) Relate the invertebrate community to overall water quality through quantification of metrics related to species richness, abundance and diversity and region specific multi-metric indices as indicators of water quality and habitat condition
Author: Samuel Astrachan
Publisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 0
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Book Description
Evaluation of the biotic integrity of dynamic lotic environments is crucial to maintaining the successful functioning of watershed ecosystems. Routine biological monitoring is necessary to identify the influence of environmental degradation on aquatic life and measure the effects of both short and long-term environmental variation. Though New York State has a rich history of statutory biological monitoring along Hudson River tributaries, longitudinal analyses of benthic macroinvertebrate data using multidimensional scaling (MDS) and multimetric indices (MMI) are limited. Here, I use six family-level metric indices, multidimensional scaling (MDS) and indicator species analysis to evaluate biotic integrity along the Saw Kill River (Annandale, NY). Invertebrate collection took place between August 1st and September 2nd, 2017 at 3 distinct locations along the Saw Kill. Historical data from Budd and Strayer (1998) were incorporated into compositional analysis to assess the influence of global change, changing land-use, and land-use intensity on invertebrate communities. The results indicate a significant change in benthic macroinvertebrate communities of the Saw Kill over time as well as legacies of historical land-use in reported species composition and richness scores. Increasing evenness and richness of invertebrate communities at each site suggest an increase in biological integrity throughout the stream reach sampled despite evidence of global change. Although I do not demonstrate causal links between changing land-use (reforestation of catchment area, decreasing agricultural/mixed uses, etc.) and in-stream invertebrate composition, these data suggest linked changes. This study demonstrates the value of long-term longitudinal data sets and supports the conclusion that longitudinal biological assessment of lotic ecosystems can provide valuable insight into existing anthropogenic influences on riverine environments and the application of future watershed development plans.
Author: David N. Mott
Publisher: Forgotten Books
ISBN: 9780260435088
Category :
Languages : en
Pages : 60
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Book Description
Excerpt from Buffalo National River, Arkansas, Ten Years of Water Quality Monitoring Fecal coliform bacteria levels remain low in the river with the exception of the Ponca site which shows elevated fecal bacteria caused by cattle operations in Boxley Valley. Bacteria concentrations also appear to be increasing in the river over the last ten years but at a slow rate. High bacteria counts have not been found in association with periods or locations of intensive recreational use. Average bacteria levels are about twice as high in tributaries as in the river. Tomahawk Creek had the highest bacteria counts of any tributary, and Mill, Calf, Richland, Bear, and Clabber Creeks also showed somewhat higher bacteria averages. Mill Creek near Pruitt was the only tributary where the bacteria source was linked to septic systems, the dominant source in the remaining tributaries is agriculture. Nutrient concentrations appear to increase in the middle section of the river and in middle river tributaries. In the case of nitrates, a strong correlation was demonstrated between an increase in the percent watershed converted to pasture and increased average nitrate concentrations. With more of the Buffalo River Watershed being converted to pasture, it is likely that nutrient concentrations will continue to increase; however, the trend for nitrates over the study period was relatively flat. Six tributaries showed relatively high nitrate concentrations including Davis, Brush, Tomahawk, Calf and both Mill Creeks. Cecil Creek had a high orthophosphate average which will require further investigation. As with bacteria, the dominant source of nutrients is agricultural activities located within tributary watersheds. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: David C. Voelker
Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 60
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Book Description
Author: Suzanne Jane Young
Publisher:
ISBN:
Category : Benthos
Languages : en
Pages : 128
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Book Description
The release of fly ash at the Tennessee Valley Authority (TVA) Kingston Fossil Plant (KIF) on 22 December 2008 discharged approximately 4.1 million cubic meters of coal ash into the adjacent aquatic and terrestrial systems. Previous benthic invertebrate investigations conducted by TVA and collaborative researchers concluded that benthic invertebrates in the Emory River were at moderate risk from ash-related constituents, primarily arsenic, in ash-contaminated sediment that remained in the Emory River following extensive dredging efforts. These conclusions were based on the observation of statistically significant reductions in growth and biomass in laboratory toxicity tests with Emory River sediment. Benthic invertebrate community survey results from 2010, however, did not support this conclusion. These previous surveys evaluated benthic invertebrate community data and sediment data across a large spatial scale, providing an "area-wide" interpretation of the relationships between the benthic invertebrate community results to the ash release. In the present research, co-located sediment and benthic invertebrate community samples were collected from nine locations in the Emory River. Community metric results were compared among samples, locations, and previous years and to co-located sediment chemistry and physical sediment properties. Temporal trends were also evaluated over a 5-year period of time at two locations to gauge if an initial impact and/or recovery could be determined. Despite this refined investigation, no trends or significant differences were identified between ash-impacted locations compared to the reference location, and no evidence of an initial impact or subsequent recovery trends were established. Furthermore, no significant relationships could be established between benthic invertebrate community metrics and sediment chemistry results. This information is important for the informed monitoring, remediation, and damage assessment of the benthic invertebrate community at the Kingston Ash Recovery site. This research also increases our knowledge of benthic invertebrate tolerance to metal mixtures in sediment of natural systems.
Author: Kevin Joseph Cash
Publisher: The Study
ISBN:
Category : Aquatic ecology
Languages : en
Pages : 88
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Book Description
As part of a larger project on development of an ecosystem integrity and cumulative effects monitoring program for the Peace, Athabasca, and Slave River basins, this report reviews the concept of ecosystem health and cumulative effects assessment as well as the theoretical framework and practical objectives of these approaches. The report reviews the literature on existing individual, population-, and community-level approaches and associated measurements being used for the assessment of aquatic ecosystem health and cumulative effects. It also identifies the types of data required to assess and monitor aquatic ecosystem health and cumulative effects in large northern rivers. Finally, the report discusses the applicability of these approaches and associated measurements, and recommends approaches with potential for use in the Northern River Basins Study.
