Download or read book Assessment of the Ecological Health of Streams in the Bowen Broken Rivers Catchment Based on the Aquatic Macroinvertebrate Community and Water Quality and the Impact of Newlands Coal Mine on the Aquatic Environment written by Queensland. Department of Natural Resources. Freshwater Biological Monitoring and published by . This book was released on 2001 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Quality Assessment of Stream Ecosystems Using Benthic Macroinvertebrates written by Mi-Young Song and published by . This book was released on 2007 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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...
Download or read book Rapid Bioassessment of Stream Health written by Duncan L. Hughes and published by CRC Press. This book was released on 2009-12-23 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tasked by the Clean Water Act to restore and maintain the integrity of their waters, state and local governments must develop systems for assessing the health of the streams within their borders. They quickly find that one size does not fit all when it comes to sampling. Rapid Bioassessment of Stream Health examines the sampling techniques, laborat
Download or read book Assessment of the Biological Health of Streams in the Caloundra Shire Based on the Aquatic Macroinvertebrate Community written by Queensland. Department of Natural Resources. Freshwater Biological Monitoring and published by . This book was released on 2000 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impact of Nearstream Vegetation and Stream Morphology on Water Quality and Stream Biota written by James R. Karr and published by . This book was released on 1977 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing and Monitoring Aquatic Ecosystem Health written by Kevin Joseph Cash and published by The Study. This book was released on 1995 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Biological Criteria written by and published by . This book was released on 1994 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impacts of Land Use Disturbance on Fish and Aquatic Macroinvertebrate Assemblages in the Nolichucky River Watershed written by Hayley Sonia Gotwald and published by . This book was released on 2016 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Southern Appalachian watersheds of the United States are negatively affected by pesticides and fertilizers used in row crop agriculture. The objective was to determine if the amount of row crops is connected to changes in aquatic biotic assemblages draining the Nolichucky River watershed in east Tennessee. The hypothesis was the amount of row crops will negatively correlate with indices of biotic integrity (IBI) metrics for fish and benthic macroinvertebrates indicating healthy aquatic communities. For 18 sample sites in 2014 and 2015, IBI metrics were calculated. Water quality and elevation measurements were made before conducting IBIs. To assess changes in and amounts of land use/land cover (LULC), maps from 1999 to 2014 were produced with Landsat satellite imagery. Pollutant estimates (sediment, phosphorus, and nitrogen) were calculated using the Soil & Water Assessment Tool (SWAT) model. The area of row crops increased since 1999 (39 km2 in 1999 to 71 km2 in 2014). A principal component analysis was performed on LULC measurements from different scales (local, reach and catchment), water quality data, and elevation to produce a reduced set of explanatory variables that were uncorrelated but could be associated with IBI metrics. A canonical correspondence analysis associated fish metrics with LULC types: Impervious surfaces, non-row crop fields, and forest (p = 0.04 for axis 1 eigenvalue, p = 0.05 for species-environment correlations). For the benthic macroinvertebrate metrics, nonmetric multidimensional scaling found metrics indicative of poor stream health (percentage of oligochaetes and chironomids, percentage of nutrient tolerant organisms) were strongly positively associated with increasing use of row crops, impervious surfaces (p ≤ 0.01), and pollutant estimates (p ≤ 0.004). A redundancy analysis found increasing pollutant estimates were associated with fish metrics indicative of poor stream health (percentages of hybrids, piscivores, diseased fish, and number of sunfish species) (p = 0.03). When watersheds of tributary streams are converted to impervious and non-row crop field LULC, they function biologically like the larger main stem river. Although fish and benthic macroinvertebrate metrics indicated the tributary and main stem Nolichucky sites were in relatively good condition, increases in land conversion can further degrade stream biotic integrity.
Download or read book Assessment of Aquatic Macroinvertebrates and Water Quality in Washington County Streams written by Bethany R. Stone and published by . This book was released on 2011 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Assessment of the Ecological Condition of the Streams and Rivers in the Condamine River Catchment Based on Macroinvertebrates as Bioindicators written by and published by . This book was released on 1998 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Assessment of Historical Changes in Aquatic Biota Water and Sediment Quality Within a Catchment at a Developing Urban Front written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Degradation of streams in urban-rural fringe regions occurs through complex interactions between hydrological, physical, chemical and biological mechanisms of the stream environment and surrounding landscape. Biological monitoring using macroinvertebrates may capture the complex and cumulative influences of land activity on the stream environment. The Salmon River catchment in the township of Langley, British Columbia, Canada straddles urban and rural environments in the Lower Fraser Valley. To date the Salmon River catchment has been subject to several environmental surveys. Following these earlier investigations, this study quantified relationships between the stream environment and changing land activity, across multiple scales, from 1975 to 2005, using macroinvertebrates as environmental integrators. Current and historical water, sediment, and macroinvertebrate information along with land use and land-cover evaluations were used to quantify relationships between the macroinvertebrate community and land activity in the catchment. Spatial and seasonal results for specific conductivity (a total dissolved ion indicator) and NO3−-N and PO43 (nutrient indicators) traced groundwater and overland inputs to the stream environment. Nitrate guideline exceedances occurred at groundwater-influenced sites. Elevated sediment trace metal concentrations and Zn guideline exceedances occurred mid-reach in the catchment. Peak total macroinvertebrate and sensitive taxa abundance occurred mid-reach in the catchment in 2005, while richness and proportional sensitive abundance peaks were seen at groundwater-influenced sites. The dominance of tolerant to moderately pollution tolerant taxa occurred throughout. Despite historical water quality concerns at groundwater-influenced sites, greater shifts in community composition occurred in headwaters regions. Patterns of land use and land cover changed in sensitive areas (i.e. above aquifer and in the headwaters). A greater number of correlat.
Download or read book Rapid Bioassessment Protocols for Use in Streams and Rivers written by and published by . This book was released on 1989 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Freshwater Stream Health and Restoration Using Aquatic Macroinvertebrate Communities written by Theresa Lian Shelton and published by . This book was released on 2009 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Stream Assessment written by and published by . This book was released on 1982 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Stream Health Using Aquatic Macroinvertebrates written by Tom Nelson and published by . This book was released on 2002 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Short term Effects of Hydroblasting and Increased Stream Flow on the Benthic Macroinvertebrate Community of Lauzon River written by Wayne Fiset and published by Timmins, Ont. : Northeast Science & Technology. This book was released on 1995 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing the Effects of Deep Release and Surface Release Reservoirs on Downstream Benthic Macroinvertebrate Communities in the Grand River Watershed written by Elise Elsha DenHeyer and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
