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 8 of 8 for “"CPOM"”.
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Organic Matter Dynamics and Trophic Structure in Karst Groundwater
… and without coarse particulate organic matter (CPOM) input from the surface to examine the role of CPOM input in leaf and wood breakdown. Breakdown rate and pattern of microbial colonization of leaves and wood were typical of results reported for surface streams. Unlike in surface streams, CPOM …
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The role of shredders in detrital dynamics of permanent and temporary streams
… compared to several stream detrital parameters: CPOM breakdown rates, POM concentrations, average POM particle sizes, and POM transport. In general, permanent streams with the greatest shredder densities, biomass, and annual production rates had the fastest leaf breakdown rates, highest low-flow …
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Response of a cave aquatic community to groundwater pollution
… matter and coarse particulate matter (CPOM) were used equally well in laboratory growth experiments. Presence of CPOM, not organic enrichment by septic system outfall, is the most likely cause of high isopod density in some pools. Septic system effluent may provide additional food to …
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Small scale hydrogeomorphic features influence macroinvertebrate food webs in two Great Plains rivers
… terrestrial coarse particulate organic matter (CPOM); and a decrease in trophic redundancy (fewer species occupying the same trophic niche). These results suggest that the decrease in stable substrate probably caused an overall decrease in primary productivity and limited autochthonous growth to …
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Festlegung von Radionukliden und Arsen in Feuchtgebieten an Bergbaualtstandorten – Ein Beitrag zur Passiven Wasserreinigung
… und im Wasser befindlicher Bestandesabfall (CPOM) beprobt. Zur Klärung der Genese der Urangehalte im Sediment erfolgten Untersuchungen an Pb-Isotopen. Sie zeigen u. a., dass das Uran in den obersten Zentimetern des Sediments (organische Auflage) aus der wässrigen Phase und nicht von ca. 300 …
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Advanced techniques for chemical gradient, eutectic metal, and crystallized polymer film additive manufacturing
… Crossed Polarizing Optical Microscopy (CPOM) is used to demonstrate that the process does indeed induce polymer crystallization. The second system is a roll-to-roll system, adapted from an existing roll-to-roll platform, meant to make the process continuous and allow for film patterning. …
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The effects of augmentation of coarse particulate organic matter in hyporheic sediments
Metabolic and biogeochemical processes in hyporheic zones may depend on inputs of coarse particulate organic matter. Our research focused on how differing quantity and quality of organic matter affects metabolism and nutrient retention in the hyporheic zone of a low-order Appalachian stream. We …
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Litter Breakdown And Benthic Invertebrate Detritivores From A Hydrologically Restored Stream
<p>The breakdown of coarse forms of detritus into finer forms is an ecosystem function of forested headwater streams. Many factors influence the rate of litter decay, but there is a lack of research on how stream restorations, that aim to restore hydrologic functions, influence litter breakdown. …