Global ETD Search
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Showing 1 to 7 of 7 for “"stream community"”.
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Assessment of Aquatic Invertebrate Communities of Tributaries of the Buffalo River, Arkansas, and Evaluation of Indices of Community Integrity
<p>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 …
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Alteration and recovery of a stream macroinvertebrate community exposed to fly ash effluent and an analysis of the causative factors
… and functional changes in the macroinvertebrate community of a fly ash receiving stream were investigated during the final year of fly ash basin operation and for 10 months after fly ash discharges to the stream were terminated. Minimal changes were observed in the benthic community until the …
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Influence of riparian forest and agricultural land use on community structure and ecosystem function in headwater streams
… forest buffers are often promoted to improve stream water quality and instream habitat in agricultural areas because the vegetation can filter runoff, reduce bank erosion, and restore channel morphology. However, previous studies have found that protecting narrow strips of riparian areas, …
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Effects of native forest and pastoral land use on the population dynamics and trophic role of the New Zealand freshwater crayfish Paranephrops planifrons (Parastacidae)
… benthic invertebrate communities of New Zealand streams, but the impact of land use change on crayfish populations is unknown. The population dynamics, growth, and diet of crayfish in Waikato pastoral streams were compared to crayfish inhabiting native forest streams to determine whether …
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BRIDGING AQUATIC AND TERRESTRIAL ECOSYSTEMS: ECOLOGY OF SEMI-AQUATIC MAMMALS IN SOUTHERN ILLINOIS
… mammals not only exert top-down influences on streams, but are affected by bottom-up forces from the riparian system itself. The goal of this study was to identify variables that correlate with the presence of beaver (Castor canadensis), muskrat (Ondatra zibethicus), mink (Neovison vison), and …
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Recovery of community structure and leaf processing in a headwater stream following use of a wetland passive treatment system to abate copper pollution
… Prior to treatment, copper concentrations in the stream ranged from 8.9 to 32.0 μg/L at the impacted sites and from 0.1 to 7.7 μg/L at the reference site. In kick samples, insect abundance (n) and the number of taxa (#) were reduced at the impacted sites (n = 31, 22, 33, 24 and # = 190, 246, 266, …
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Trematode Communities of the Appalachian Stream Snail, Elimia proxima: the Importance of Scale in Parasite Ecology Research
… that structure trematode communities in streams. First, I examined temporal variation in trematode infection of snails in five headwater streams. Over a three year period, I found no consistent seasonal patterns of trematode infection. There was consistency across sites in trematode …