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Predators accelerate nutrient cycling in a bromeliad ecosystem.

Show simple item record Ngai, Jacqueline T. Srivastava, Diane S. 2016-05-09T17:59:58Z 2016-05-09T17:59:58Z 2006-11-10
dc.identifier.citation Ngai, J. T., & Srivastava, D. S. (2006). Predators Accelerate Nutrient Cycling in a Bromeliad Ecosystem. Science, 314(5801), 963-963. es_CR
dc.identifier.uri 10.1126/science.1132598
dc.description.abstract Conventional ecological theory predicts that predators affect nutrient cycling by decreasing the abundance or activity of prey. By using a predator-detritivore-detritus food chain in bromeliads, we show that predators can increase nutrient cycling by a previously undescribed, but broadly applicable, mechanism: reducing nutrient export by prey emigration. Contrary to expectations, predation on detritivores increases detrital nitrogen uptake by bromeliads. Predation reduces detritivore emergence and hence export of nitrogen from the system. Detritivores therefore benefit their host plant, but only when predators are present. More generally, our results show that predator loss or extinction can dramatically and unexpectedly affect ecosystem functioning. es_CR
dc.language.iso en_US es_CR
dc.publisher Science es_CR
dc.subject bromeliads es_CR
dc.subject bromeliad ecosystems es_CR
dc.subject detritivores es_CR
dc.subject detrital nitrogen es_CR
dc.subject predation es_CR
dc.subject nutrient cycling es_CR
dc.subject bromelias es_CR
dc.subject ecosistemas de bromelias es_CR
dc.subject detritívoros es_CR
dc.subject nitrógeno detrítico es_CR
dc.subject depredación es_CR
dc.subject el ciclo de nutrientes es_CR
dc.title Predators accelerate nutrient cycling in a bromeliad ecosystem. es_CR
dc.type Article es_CR

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