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Release rates and potential fates of nitrogen and phosphorus from sediments in a eutrophic reservoir
SUMMARY 1. Nutrients released from lake sediments can influence water column nutrient concentrations and planktonic productivity. We examined sediment nutrient release [soluble reactive phosphorus…
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Biomass-dependent effects of common carp on water quality in shallow ponds
TLDR
More robust regression models are developed that predict the biomass-dependent effects of common carp on water quality variables across a wide range of systems.
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Allochthonous subsidy of periodical cicadas affects the dynamics and stability of pond communities.
TLDR
Results of a two-part study quantified deposition of Brood X periodical cicada detritus into woodland ponds and low-order streams and conducted an outdoor mesocosm experiment in which the effects of deposition of different amounts of cicadas on food webs characteristic of forest ponds were examined.
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Comparing resource pulses in aquatic and terrestrial ecosystems.
TLDR
It is proposed that different patterns of food web and ecosystem structure in terrestrial and aquatic systems lead to different responses to resource pulses, and there is a need to elucidate the indirect effects and long-term implications of resource pulses in bothrestrial and aquatic ecosystems.
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Planktonic phosphorus pool sizes and cycling efficiency in coastal and interior British Columbia lakes
TLDR
The pico- and nanoplankton size fraction played a central role in planktonic P cycling in lakes examined by this study, and the concentrations and turnover times of P in various planktoni compartments are determined, using recently developed methods for estimating phosphate concentration and planktonian regeneration rates.
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Gape Limitation, Prey Size Refuges and the Top–down Impacts of Piscivorous Largemouth Bass in Shallow Pond Ecosystems
TLDR
Impacts of largemouth bass in ecosystems containing small- and deep-bodied fish species may be most intense at the top of the food web and alter the size distribution and species composition of the fish community, but these top–down effects may not cascade to the level of the plankton when large-bodied benthivorous fish species are abundant.
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Effects of Water Level Fluctuation and Short-Term Climate Variation on Thermal and Stratification Regimes of a British Columbia Reservoir and Lake
TLDR
The results indicate that reservoir physical processes are sensitive to short-term changes in hydrology, and that the combined impacts of short- term climate variation and anthropogenic manipulation of hydrology may be greater in shallow reservoir ecosystems.
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Trophic ecology of a nonnative population of suckermouth catfish (Hypostomus plecostomus) in a central Texas spring-fed stream
TLDR
The results from this study suggest that large populations of H. plecostomus in the San Marcos River may directly compete with several native herbivorous fishes and may be disrupting trophic flows and nutrient cycling in spring-influenced streams of central and west Texas.
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Temporal changes in nitrogen and phosphorus codeficiency of plankton in lakes of coastal and interior British Columbia
Plankton nutrient limitation and deficiency were assessed in six coastal and four interior lakes and reservoirs in British Columbia. Ultimate nutrient limitation was defined as occurring over longer…
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Chemolithoautotrophy supports macroinvertebrate food webs and affects diversity and stability in groundwater communities.
TLDR
This work reevaluated the subterranean food web paradigm by examining spatial variation in the isotopic composition of basal food resources and consumers, food web structure, stygobiont species diversity, and chromophoric organic matter across a geochemical gradient in a large and complex groundwater system, the Edwards Aquifer in Central Texas.
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