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DatasetID |
363 |
Name |
ECO DATA: Productivity, consumers, and the structure of a river food chain
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Description |
We tested models of food chain dynamics in experimentally manipulated channels within a natural river. As light levels increased, primary productivity and the biomass of algae and primary predators increased, but the biomass of grazers remained relatively constant. In the presence of a fourth trophic level, algae and primary predators decreased, but grazers increased. These results match predictions of food chain models based on classical predator-prey theory and suggest that simple models of multitrophic level interactions are sometimes sufficient to predict the responses of natural communities to changes in environmental productivity and predators.
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Physical Location |
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Publisher/Owner |
Ecology; J. TIMOTHY WOOTTON, MARY E. POWER
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Publication Date |
1993-02-00
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Permissions |
Undetermined
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Source |
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Contact |
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Type |
Species List
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Subject |
Many
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Geo. Extent |
Angelo Reserve
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URL |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC45877/pdf/pnas01102-0255.pdf
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NRS Registry? |
yes
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Format |
Undetermined
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Timespan Start |
1991
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Timespan End |
1991
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Total Items |
13
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Databased Items |
(as of 2013-08-05)
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Comments |
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Entered By |
Tammy Dong
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Last Updated |
2013-09-05 14:59:21
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