Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"leaf decomposition"”.
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Microbial and metazoan effects on nutrient dynamics during leaf decomposition in streams
… cycling by heterotrophic microbes during leaf decomposition in streams. My research addressed two overarching questions: 1) how do exogenous and endogenous factors interact to drive microbial nitrogen (N) cycling during organic matter decomposition in stream ecosystems, and 2) what affect …
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Biomonitoring of Stream Water Quality: Comparative Sensitivities of Macroinvertebrate Indices and Leaf Decomposition Rates
… macroinvertebrate diversity indices with leaf decomposition rates in order to determine if both measures are sensitive to variation in water quality. Eight sites in the James River and its tributaries in southwest Missouri were sampled during summer 2001 and spring 2002 and compared with …
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Influences of Mountainside Residential Development to Nutrient Dynamics in a Stream Network
… research, I first developed models for leaf decomposition in a forested headwater stream by synthesizing several important ecological concepts, including ecological stoichiometry, microbial nutrient mining, and microbe-substrate interaction. I then extended the single stream model to a …
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Ecology of acidification and recovery in Welsh upland streams
… in stream ecosystems, benthic algal grazing and leaf decomposition. Grazer impacts on algal abundance were generally feeble and largely unaffected by acid stress. Leaf litter decomposition was impaired by acidification, due largely to reduced microbial breakdown. Prospects for biological recovery …
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INFLUENCES OF DISEASE-DRIVEN AMPHIBIAN DECLINES ON ECOSYSTEM STRUCTURE AND FUNCTION IN PANAMANIAN HEADWATER STREAMS
… dynamics, ecosystem functions such as decomposition, and ecosystem-level biogeochemical cycling. Tadpoles in tropical streams likely regulate flows and ratios of nitrogen (N), phosphorus (P), and carbon (C), influencing ecosystems by altering nutrient supplies to other animals and their …
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Effects of experimentally-altered hydrology on ecosystem function in headwater streams
… I addressed included: 1) How is organic matter decomposition regulated by changes to the availability of water? and 2) How does the relationship between nutrient uptake and metabolism change under conditions of varying water availability? The availability of water (as discharge) was shown to be …
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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
… 2 - 5, respectively). In benthic samples and leaf packs, abundances of all functional groups were reduced at the impacted sites relative to the reference site. In terms of abundance, scrapers and predators were most and least affected by copper, respectively. Following treatment, copper …