期刊
ECOLOGY LETTERS
卷 13, 期 10, 页码 1199-1209出版社
WILEY
DOI: 10.1111/j.1461-0248.2010.01511.x
关键词
Consumptive effects; ecosystem function; ecosystem services; indirect predator effects; non-consumptive effects; nutrient cycling; nutrient translocation; predator behaviour and nutrient distribution
类别
资金
- National Science Foundation [DEB-0816504, OCE-0648525, OCE-0727628]
- Division Of Environmental Biology
- Direct For Biological Sciences [0816504] Funding Source: National Science Foundation
Predators are predominantly valued for their ability to control prey, as indicators of high levels of biodiversity and as tourism attractions. This view, however, is incomplete because it does not acknowledge that predators may play a significant role in the delivery of critical life-support services such as ecosystem nutrient cycling. New research is beginning to show that predator effects on nutrient cycling are ubiquitous. These effects emerge from direct nutrient excretion, egestion or translocation within and across ecosystem boundaries after prey consumption, and from indirect effects mediated by predator interactions with prey. Depending on their behavioural ecology, predators can create heterogeneous or homogeneous nutrient distributions across natural landscapes. Because predator species are disproportionately vulnerable to elimination from ecosystems, we stand to lose much more from their disappearance than their simple charismatic attractiveness.
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