Download or read book Effects of Stream Crossings on Macroinvertebrate Assemblages of the Upper Current River Ozark National Scenic Riverways Missouri written by Rachel Lee Sine Heth and published by . This book was released on 2010 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the impact of road crossings on benthic macroinvertebrate communities in a wadeable Ozark river. I collected macroinvertebrates during winter and summer from four riffle locations (upstream, at crossing, downstream, and farther downstream) at each of five sites in the upper Current River (mean discharge 12 m3 s-1). Sixteen environmental variables were measured at each location to characterize sites. Using digital photographs from trail cameras, traffic frequencies were calculated and largely consisted of hikers and horses. Based on counts of 68,353 individuals from 111 macroinvertebrate taxa, I calculated four metrics (taxa richness, Shannon's index, EPT, biotic index) combined into the Stream Condition Index and assessed effects of stream crossings with a two-way nested ANOVA for each season. All metrics showed strong differences among sites but inconsistent effects among locations. Multivariate analyses (NMDS and a nested ANOSIM) also revealed strong differences in community composition among sites, as well as among locations. Taken together, the results indicate crossing disturbances during summer and winter 2009 were either too infrequent or small in intensity to impair benthic macroinvertebrate communities.
Download or read book Diversity of Macroinvertebrates in Tributaries of the Jacks Fork and Current Rivers Ozark National Scenic Riverways Missouri and Efficacy of Spring fed Tributaries as Refugia written by Rachel L. S. Heth and published by . This book was released on 2015 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disturbance is a dominant force in streams, and macroinvertebrates have adapted by using specialized strategies to reach refugia. Refugia include stable environments with abundant shelter and food resources. In the Missouri Ozarks, spring-fed tributaries are possible refugia. To determine if spring-fed tributaries serve as thermal refugia, submergent bidirectional movement was measured from spring-fed and surface-fed confluences in the Current River, Missouri during winter and summer. Macroinvertebrates were sampled to capture standing and bidirectional movement. Macroinvertebrate communities in summer significantly differed and formed three groups: surface-fed tributaries, Current River main channel, and spring-fed tributaries as supported by nonparametric analyses. Spring-fed tributary macroinvertebrate communities were distinct, which suggests these tributaries are unlikely thermal refugia for macroinvertebrates. Because greatest community differences existed between tributary types, mesohabitats were investigated. Mesohabitats differed in community composition and taxonomic richness within functional feeding groups with marginal vegetation having high taxonomic richness. Chironomidae among mesohabitats were analyzed because of their high diversity and density in streams. At the genus level, the inclusion of chironomids in analyses did not alter bioassessment metrics although chironomids alone were able to differentiate among mesohabitats reflecting differences found by the entire macroinvertebrate community. The most abundant chironomid taxa related best to nutrients and sediments. Further work with Chironomidae at the species level could improve environmental assessment and interpretation. The mesohabitat scale was able to differentiate among macroinvertebrate communities and should be further investigated in the Ozarks.
Download or read book The Impact of Floaters on the Ozark National Scenic Riverways written by Steven Wayne Sutton and published by . This book was released on 1976 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ozark National Rivers Missouri written by United States. Congress. House. Committee on Interior and Insular Affairs and published by . This book was released on 1963 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Bridge Crossings on Fish Assemblages in a Southwest Missouri Stream written by Matthew Keener and published by . This book was released on 2003 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Possible Sources of Microbiological Contamination and Water quality Characteristics of the Jacks Fork Ozark National Scenic Riverways Missouri written by Jerri V. Davis and published by . This book was released on 2002 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ozark National Scenic Riverways and Its Potential Impact on South Missouri written by Robert J. Bevins and published by . This book was released on 1969 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Stream Channelization on Aquatic Macroinvertebrates Buena Vista Marsh Portage County Wisconsin written by Robert N. Schmal and published by . This book was released on 1978 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Land Use Effects on Stream Morphology and Macroinvertebrate Communities in the Ozarks Region Taney County Missouri written by David Dickson and published by . This book was released on 2012 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Changing land use practices have contributed substantially to an increase in stream degradation and biotic stresses. Clearing of forested areas, urbanization, and agricultural practices are a direct result of sustaining the ever increasing human population. In the Ozarks of Southwest Missouri, little research has been performed on these impacts on streams outside of the Springfield area, leaving much of this region without an account of such anthropogenic disturbances. To better assess the impacts of anthropogenic disturbances in southwest Missouri, four streams were chosen following the rural-urban disturbance gradient. Geomorphic, habitat, and hydrologic data was collected following the USGS National Water Quality Assessment (NAWQA) protocol with additional survey methods. Water quality was assessed for each stream through nutrient samples, water chemistry, and macroinvertebrate community analysis. Results provide evidence indicating that all streams in this study were considered degraded, both biologically and geomorphically and that anthropogenic influences have altered and affected all streams in this study with little regard to classification type. However, the degree and severity of impairment varied among stream types. Percent shading and water temperature were the only factors significant correlated to land use that also had a high degree of similarity with the macroinvertebrate community indices. This suggests that in impaired stream reaches, shading, and the environmental factors it can influence, can have a substantial impact on the success rate of the macroinvertebrate communities within these streams.
Download or read book Vegetation Dynamics of the Riparian Corridor Jacks Fork and Current Rivers Ozark National Scenic Riverways Missouri written by Keith Grabner and published by . This book was released on 1999 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Extreme Floods on Riffle Macroinvertebrate Assemblages in Tributaries to the Mohawk River New York written by Mirian R. Calderon and published by . This book was released on 2015 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Watershed Land Use on the Benthic Macroinvertebrate Assemblages in Ridge and Valley Streams in Chattanooga Tennessee written by Paul Leiper Freeman and published by . This book was released on 1999 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Use of Centrarchids in the Ozark National Scenic Riverways written by Wayne Probst and published by . This book was released on 1983 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Delineation of Flooding Within the Ozark National Scenic Riverways in Southeastern Missouri Akers and Alley Spring written by Geological Survey (U.S.) and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Experimental Drought Disturbance on Macroinvertebrate Assemblages in Stream Mesocosms written by and published by . This book was released on 2006 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Botanical Survey of Seven Sites Along the Jack s Fork River Ozark National Scenic Riverways written by Michael Kevin Skinner and published by . This book was released on 1998 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ozark National Scenic Riverways Missouri written by United States. National Park Service. Denver Service Center and published by . This book was released on 1980 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
