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Benthic Macroinvertebrate Communities An Indicator Of Water Quality And Aquatic Ecosystem Health In The St Lawrence River
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Book Synopsis Benthic Macroinvertebrate Communities - an Indicator of Water Quality and Aquatic Ecosystem Health in the St. Lawrence River by : Caroline Savage
Download or read book Benthic Macroinvertebrate Communities - an Indicator of Water Quality and Aquatic Ecosystem Health in the St. Lawrence River written by Caroline Savage and published by . This book was released on 2013 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluating Benthic Macroinvertebrates as Bio-indicators of Freshwater Habitat Quality in an Eastern Oregon Agro-ecosystem by : Melissa A. Scherr
Download or read book Evaluating Benthic Macroinvertebrates as Bio-indicators of Freshwater Habitat Quality in an Eastern Oregon Agro-ecosystem written by Melissa A. Scherr and published by . This book was released on 2010 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of anthropogenic disturbance on river systems is gaining attention, and concerns about the state of freshwater natural resources are increasing globally, as are efforts to restore habitat that has been degraded by disturbance. In rivers, non-point source pollution affects the physical characteristics of the habitat and the endemic biotic assemblages. Aquatic macroinvertebrates are numerous and exhibit graded responses to various types of disturbance in the river, and may be used as indicators of habitat conditions. In this dissertation, macroinvertebrates were examined as bioindicators in the Umatilla River in eastern Oregon. The first study is a bioassessment of the impacts of agriculture on the benthic macroinvertebrate community in adjacent streams. The results of this study show that there are physical differences in habitat associated with adjacent land use, and the macroinvertebrate communities responded to these differences with changes in taxa richness and evenness. Indicator species analysis identified thirteen taxa which were indicative of habitat conditions associated with ideal habitat used as a reference condition, degraded habitat associated with agricultural land use, and transitional habitat associated with conservation/restoration management. The second study is a laboratory study in which the effects of temperature of a common mayfly nymph, Epeorus albertae (McDunnough) (Ephemeroptera: Heptageniidae) were evaluated. The study showed that not only the developmental rate of the nymphs was affected by temperature treatment (within a range of 18°C and 28°C), but the location of accumulated body tissues over time varied by temperature, with significant difference in the type of growth observed for insects held at the highest temperature. The third study examined the response of six indicator taxa to environmental variables as predictors of abundance in a non-parametric multiplicative regression. This study found that for all taxa examined, the two best predictors of abundance in the Umatilla River were turbidity and conductivity. Increased turbidity and conductivity are common effects of intensive agriculture in streams located in agro-ecosystems, but may potentially be mitigated by vegetative buffer strips and sustainable land use practices. Long term agricultural disturbance in the landscape has been shown to have lasting effects in the ecosystem which may be further exacerbated as global climate change increases dependence on freshwater resources. Understanding anthropogenic impacts on organismal communities and natural resources is vital to establishment of effective conservation, restoration, and maintenance of a healthy ecosystem.
Book Synopsis Ecological Indicators for Coastal and Estuarine Environmental Assessment by : João Carlos Marques
Download or read book Ecological Indicators for Coastal and Estuarine Environmental Assessment written by João Carlos Marques and published by WIT Press. This book was released on 2009 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecological indicators address ecosystems structure and/or function and are commonly used to provide synoptic information about their state. Through quantitative representations of either the forces that steer ecosystems, responses to forcing functions, or of previous, current, or future states of an ecosystem, indicators are expected to reveal conditions and trends that will help in development planning and decision making processes. Ecological indicators combine numerous environmental factors in a single value, which may be useful in terms of management and in the development of ecological concepts, compliant with the general public's understanding. Nevertheless, their application is not exempt of criticisms, the first of which is that aggregation results in an oversimplification of the ecosystem under observation. Ecological indicators must therefore be handled following the right criteria and in situations that are consistent with its intended use and scope; otherwise they may drive to confusing interpretations of data.
Book Synopsis Impacts of an Invasive Benthic Predator on Macroinvertebrate Communities in the St. Lawrence River by : Rebekah Marie Kipp
Download or read book Impacts of an Invasive Benthic Predator on Macroinvertebrate Communities in the St. Lawrence River written by Rebekah Marie Kipp and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Response Signatures by : Thomas P. Simon
Download or read book Biological Response Signatures written by Thomas P. Simon and published by CRC Press. This book was released on 2002-07-17 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of environmental assessment procedures within monitoring frameworks demands that there be some relevancy to the decisions that management agencies make using biological criteria. These biological criteria standards are the basis for environmental indicators, which provide a direct measure of environmental quality. Biological Response Signat
Book Synopsis Feasibility of Combining Two Aquatic Benthic Macroinvertebrate Community Databases for Water-quality Assessment by : Bernard N. Lenz
Download or read book Feasibility of Combining Two Aquatic Benthic Macroinvertebrate Community Databases for Water-quality Assessment written by Bernard N. Lenz and published by . This book was released on 1997 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Benthic Macroinvertebrates as Indexes of Water Quality in the Scioto River Basin, Ohio by : John H. Olive
Download or read book Benthic Macroinvertebrates as Indexes of Water Quality in the Scioto River Basin, Ohio written by John H. Olive and published by Scholastic. This book was released on 1975 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Assessment of the Utility of Benthic Macroinvertebrate and Fish Community Structure in Biomonitoring, Peace, Athabasca and Slave River Basins by : Kevin Joseph Cash
Download or read book An Assessment of the Utility of Benthic Macroinvertebrate and Fish Community Structure in Biomonitoring, Peace, Athabasca and Slave River Basins written by Kevin Joseph Cash and published by . This book was released on 1996 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data on benthic macroinvertebrate and fish community structure are widely recognised as being very useful in cumulative assessment and issues of ecosystem health and integrity. Measurements of aquatic community structure have been made periodically within the northern Alberta river basins over the past 30 years, but these data have not been standardised or co-ordinated, nor analysed to determine their appropriateness or to assess the general state of the aquatic ecosystem. This report describes efforts to assess the nature and quality of long-term data sets measuring benthic invertebrate and fish community structure and effluent loading within the Peace, Athabasca, and Slave river drainages. Information was collated and standardised to assess the utility of applying current biomonitoring techniques to these data, and recommendations were made on the most appropriate approaches to use in a long-term cumulative effects monitoring plan.
Book Synopsis Benthic Macroinvertebrate Communities of the Penobscot River, Maine, with Special Reference to Their Role as Water Quality Indicators by : Charles F. Rabeni
Download or read book Benthic Macroinvertebrate Communities of the Penobscot River, Maine, with Special Reference to Their Role as Water Quality Indicators written by Charles F. Rabeni and published by . This book was released on 1977 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Thermal Effluent on the Diversity and Distribution of Benthic Invertebrates in the St. Lawrence River by : Kayla Hamelin
Download or read book Effects of Thermal Effluent on the Diversity and Distribution of Benthic Invertebrates in the St. Lawrence River written by Kayla Hamelin and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Temperature is a primary physical constraint on the distribution and abundance of aquatic organisms. Increasingly, human activities modify natural thermal regimes of aquatic systems, thereby altering the composition and structure of the organismal community. For decades, the Gentilly-2 Nuclear Power Plant (G2NPP) in Bécancour, QC, has discharged coolant water into the St. Lawrence River at temperatures more than 10oC above ambient. My study aimed to quantify how the diversity, composition, and abundance of the St. Lawrence benthic macroinvertebrate community has been altered by G2NPP thermal effluent. Benthic samples were collected at sites along the thermal gradient downstream of G2NPP in May and September 2012. Environmental predictors varying with distance downstream of G2NPP (e.g., temperature, depth, flow rate) were recorded at each station. Macroinvertebrate diversity and abundance were measured for each site and analyzed in relation to local environmental variables. Taxonomic richness and abundance (density and biomass) were elevated close to the power plant, but these patterns were best explained by environmental variables such as depth and sediment type. Taxonomic evenness was reduced in the warmest sites, and this pattern was driven by a few highly tolerant taxa, including thermophilic invasive species like the Asian clam, Corbicula fluminea, which was amongst the most dominant species in terms of abundance and biomass. Despite the strong thermal gradient at G2NPP, diversity indices and characteristics of community composition primarily reflected abiotic habitat characteristics other than temperature, whereas temperature was an important predictor only for a minority of taxa, like C. fluminea. With the closure of G2NPP in December 2012, and the subsequent eradication of cold-sensitive C. fluminea, these results provide a baseline for monitoring the succession of the benthic community in future years." --
Book Synopsis Ecological Studies on Benthic Macroinvertebrate Communities in Relation to Their Use in River Water Quality Surveillance by : C. Girton
Download or read book Ecological Studies on Benthic Macroinvertebrate Communities in Relation to Their Use in River Water Quality Surveillance written by C. Girton and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Canada. Environment Canada Publisher :Sainte-Foy, Quebec : St. Lawrence Vision 2000 ISBN 13 :9780662332497 Total Pages :6 pages Book Rating :4.3/5 (324 download)
Book Synopsis Monitoring the State of the St. Lawrence River : Freshwater Fish Communities by : Canada. Environment Canada
Download or read book Monitoring the State of the St. Lawrence River : Freshwater Fish Communities written by Canada. Environment Canada and published by Sainte-Foy, Quebec : St. Lawrence Vision 2000. This book was released on 2002 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods for the Study of Marine Benthos by : Anastasios Eleftheriou
Download or read book Methods for the Study of Marine Benthos written by Anastasios Eleftheriou and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecosystems of the benthic environment are a sensitive index toecological change, and as such demand long-term and effectivemonitoring. Methods for the Study of Marine Benthos providescomprehensive information on the tools and techniques available tothose working in areas where the declining health of the sea,depletion of marine resources and the biodiversity of marine lifeare major concerns. In response to the need for increasingly detailed information onbottom-living communities, this fully revised new editionoffers: Contributions from a broad range of internationally recognisedexperts New information for those compiling environmental impactstatements, pollution assessments and working with eco-systemmanagement Two separate chapters on Imaging Techniques and DivingSystems A vital tool for all marine and environmental scientists,ecologists, fisheries workers and oceanographers, libraries in alluniversities and research establishments where these subjects arestudied and taught will find this book a valuable addition to theirshelves.
Book Synopsis A Reconnaissance Survey of the Benthic Macroinvertebrate Community and Water Quality in the Rattlesnake Creek Watershed, Washington by : Michael Scott McGregor
Download or read book A Reconnaissance Survey of the Benthic Macroinvertebrate Community and Water Quality in the Rattlesnake Creek Watershed, Washington written by Michael Scott McGregor and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Canadian Journal of Fisheries and Aquatic Sciences by :
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2011-09 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Benthic Macroinvertebrate Communities as Indicators of Reconstructed Freshwater Tidal Wetlands in the Anacostia River, Washington by : Kevin D. Brittingham
Download or read book Benthic Macroinvertebrate Communities as Indicators of Reconstructed Freshwater Tidal Wetlands in the Anacostia River, Washington written by Kevin D. Brittingham and published by . This book was released on 2011 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considerable work has been conducted on the benthic communities of inland aquatic systems and brackish water estuarine wetlands, but there remains a scarcity of effort on freshwater tidal wetlands. This study characterized the benthic macroinvertebrate communities of recently reconstructed urban freshwater tidal wetlands along the Anacostia River in Washington, D.C. The focus of the study was Kingman Marsh, which was reconstructed by the U.S. Army Corps of Engineers in 2000 using Anacostia dredge material. Populations from this "new" marsh were compared to those of the similar, but earlier reconstructed Kenilworth Marsh (1993) just one half mile upstream, the relic reference Dueling Creek Marsh in the upper Anacostia estuary and the outside reference Patuxent freshwater tidal marsh in an adjacent watershed. Benthic macroinvertebrate organisms were collected using a range of techniques including the Ekman bottom grab sampler, D-net and Hester-Dendy sampler. Samples were collected at least seasonally from tidal channels, tidal mudflats, three vegetation/sediment zones (low, middle and high marsh), and pools over a 3-year period (late 2001-2004). The macroinvertebrate communities present at the marsh sites reflected levels of disturbance, stress, and pollution, all of which are effects of urbanization in the watershed. There were also similarities between older reconstructed wetlands and remnant wetlands indicating an age factor in comparisons of macroinvertebrate communities. Macroinvertebrate density was significantly greater at Kingman Marsh than Kenilworth Marsh due to more numerous chironomids and oligochaetes. This may reflect an increase in unvegetated sediments at Kingman (even at elevations above natural mudflat) due to grazing pressure from over-abundant resident Canada geese. Unvegetated sediments yielded greater macroinvertebrate abundance but lower richness than vegetated marsh sites. Data collected from this study provides information on the extent to which benthic macroinvertebrate communities can serve as indicators of a functional reconstructed freshwater tidal marsh.
