Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey
Sanders D, Schaefer M, Platner C, Griffiths GJK (2011)
OIKOS 120(3): 418-426.
Zeitschriftenaufsatz
| Veröffentlicht | Englisch
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Autor*in
Sanders, Dirk;
Schaefer, Matthias;
Platner, ChristianUniBi;
Griffiths, Georgianne J.K.
Abstract / Bemerkung
We found no positive effect of increasing predator functional group richness on prey control. However there was evidence for strong composition effects between the functional groups. The presence of ants in predator assemblages reduced the prey suppression through mostly trait-mediated intraguild interactions, while hunting and web-building spiders contributed additively to prey suppression and reduced the density of herbivore and decomposer prey by 50-60%. A trophic cascade on plant biomass triggered by web-builders and hunting spiders was diminished at levels of higher predator group diversity.
In conclusion, our experiments showed that intraguild interactions strongly influence the strength of top-down control by generalist predators. Among spiders there was evidence for a positive relation between functional group richness and prey suppression but the overall outcome strongly depended on the occurrence of interference, driven by trait-mediated indirect interactions.
In conclusion, our experiments showed that intraguild interactions strongly influence the strength of top-down control by generalist predators. Among spiders there was evidence for a positive relation between functional group richness and prey suppression but the overall outcome strongly depended on the occurrence of interference, driven by trait-mediated indirect interactions.
Stichworte
SUPPRESSION;
DIVERSITY;
BIODIVERSITY;
ALTERNATIVE PREY;
CURRENT KNOWLEDGE;
SPECIES RICHNESS;
ECOSYSTEM FUNCTION;
FOOD-WEB;
MEDIATED INDIRECT INTERACTIONS;
TROPHIC CASCADES
Erscheinungsjahr
2011
Zeitschriftentitel
OIKOS
Band
120
Ausgabe
3
Seite(n)
418-426
ISSN
0030-1299
Page URI
https://pub.uni-bielefeld.de/record/2371816
Zitieren
Sanders D, Schaefer M, Platner C, Griffiths GJK. Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey. OIKOS. 2011;120(3):418-426.
Sanders, D., Schaefer, M., Platner, C., & Griffiths, G. J. K. (2011). Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey. OIKOS, 120(3), 418-426. https://doi.org/10.1111/j.1600-0706.2010.18924.x
Sanders, Dirk, Schaefer, Matthias, Platner, Christian, and Griffiths, Georgianne J.K. 2011. “Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey”. OIKOS 120 (3): 418-426.
Sanders, D., Schaefer, M., Platner, C., and Griffiths, G. J. K. (2011). Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey. OIKOS 120, 418-426.
Sanders, D., et al., 2011. Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey. OIKOS, 120(3), p 418-426.
D. Sanders, et al., “Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey”, OIKOS, vol. 120, 2011, pp. 418-426.
Sanders, D., Schaefer, M., Platner, C., Griffiths, G.J.K.: Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey. OIKOS. 120, 418-426 (2011).
Sanders, Dirk, Schaefer, Matthias, Platner, Christian, and Griffiths, Georgianne J.K. “Intraguild interactions among generalist predator functional groups drive impact on herbivore and decomposer prey”. OIKOS 120.3 (2011): 418-426.
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