Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Predator diversity and ecosystem functioning: density modifies the effect of resource partitioning
Griffin, J.N.; de la Haye, K.L.; Hawkins, S.J.; Thompson, R.C.; Jenkins, S.R. (2008). Predator diversity and ecosystem functioning: density modifies the effect of resource partitioning. Ecology 89(2): 298-305
In: Ecology. Ecological Society of America: Brooklyn, NY. ISSN 0012-9658; e-ISSN 1939-9170
|  |
| Trefwoorden |
Aquatic organisms > Heterotrophic organisms > Predators
Biodiversity
Ecosystems
Food webs
Properties > Physical properties > Density
Resources
Trophic relationships
Marien/Kust |
| Auteurs | | Top |
- Griffin, J.N.
- de la Haye, K.L.
- Hawkins, S.J.
|
- Thompson, R.C.
- Jenkins, S.R.
|
|
| Abstract |
The link between biodiversity and ecosystem functioning is now well established, but the challenge remains to develop a mechanistic understanding of observed effects. Predator-prey interactions provide an opportunity to examine the role of resource partitioning, thought to be a principal mediator of biodiversity-function relationships. To date, interactions between multiple predators and their prey have typically been investigated in simplified agricultural systems with limited scope for resource partitioning. Thus there remains a dearth of studies examining the functional consequences of predator richness in diverse food webs. Here, we manipulated a species-rich intertidal food web, crossing predator diversity with total predator density, to simultaneously examine the independent and interactive effects of diversity and density on the efficiency of secondary resource capture. The effect of predator diversity was only detectable at high predator densities where competitive interactions between individual predators were magnified; the rate of resource capture within the species mixture more than doubled that of the best-performing single species. Direct observation of speciesspecific resource use in monoculture, as quantified by patterns of prey consumption, provided clear evidence that species occupied distinct functional niches, suggesting a mechanisticexplanation of the observed diversity effect. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
