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Book Evaluating Benthic Macroinvertebrates as Bio indicators of Freshwater Habitat Quality in an Eastern Oregon Agro ecosystem

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 Short term Effects of Hydroblasting and Increased Stream Flow on the Benthic Macroinvertebrate Community of Lauzon River

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:

Book Response of Benthic Macroinvertebrate Communities Downstream of a Peaking Hydroelectric Generation Station in Northeastern Ontario

Download or read book Response of Benthic Macroinvertebrate Communities Downstream of a Peaking Hydroelectric Generation Station in Northeastern Ontario written by Fiset, Wayne and published by South Porcupine : Ontario Ministry of Natural Resources, Northeast Science & Technology. This book was released on 1998 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Selected Water Resources Abstracts

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Analysis of the Benthic Macroinvertebrate Community Structure for Assessment of Water Quality of the Des Moines River

Download or read book Analysis of the Benthic Macroinvertebrate Community Structure for Assessment of Water Quality of the Des Moines River written by Richard Leonard Westphal and published by . This book was released on 1973 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Benthic Macroinvertebrates as Indexes of Water Quality in the Scioto River Basin Ohio

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 Freshwater Biomonitoring and Benthic Macroinvertebrates

Download or read book Freshwater Biomonitoring and Benthic Macroinvertebrates written by David M. Rosenberg and published by Springer. This book was released on 1993 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: North American and European governments have adopted national programs for environmental monitoring and assessment that include the use of aquatic biota. These programs will use a variety of indicators of environmental health; benthic macroinvertebrates are one of the most promising of them. The chapters in this book deal with the many different approaches available for using benthic macroinvertebrates in biological monitoring programs.

Book Selected Water Resources Abstracts

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Impact of Habitat and Water Quality on the Benthic Macroinvertebrate Community in a Multi stressed Urban Stream

Download or read book Impact of Habitat and Water Quality on the Benthic Macroinvertebrate Community in a Multi stressed Urban Stream written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Macroinvertebrates in urban streams in Ohio are potentially compromised by habitat loss, by the annual peak discharge event, and by degraded water quality. The Mill Creek in Southwest Ohio is a significantly channelized river that collects storm water runoff, wastewater treatment plant effluent, permitted dischargers, sanitary sewers, and combined sewers. Channelization areas have had 12-40 years to re-grow. Most of the riparian zone, although narrow, is lined with trees that shade the channel. The result is eutrophication by nutrient loading, some toxic chemical spills, and habitat simplification. This study was designed to show the relative impacts of habitat and water quality on the macroinvertebrate community in a multi-stressed urban stream. Possible limiting factors were quantified and evaluated along the main-stem of the Mill Creek and related to the macroinvertebrates five times over the summer of 2000. The habitat was characterized using the Ohio EPA's QHEI, the estimated peak flow, and pebble counts. Water quality was quantified by the nutrient concentrations found. Both habitat and water parameters were compared to macroinvertebrate density, taxa richness, and the calculated metric, invertebrate community index. Data was collected for base flow in the summer and autumn of 2000-2001. The QHEI and the ICI were linearly related over transects done in four non-consecutive years within a decade. Multiple regression showed several habitat variables correlated to taxa richness. ANOVA identified average species richness was significantly impacted by both water quality and habitat variables. A non-parametric method (detrended canonical correspondence analysis) separated the determinants for invertebrate communities along a nutrient (19.1% of variance) and habitat axis (11.1% of variance).

Book Rapid Bioassessment Protocols for Use in Wadeable Streams and Rivers

Download or read book Rapid Bioassessment Protocols for Use in Wadeable Streams and Rivers written by United States. Environmental Protection Agency. Office of Water and published by . This book was released on 1999 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: