• Publications
  • Influence
Status and Ecological Effects of the World’s Largest Carnivores
The status, threats, and ecological importance of the 31 largest mammalian carnivores globally are reviewed and a Global Large Carnivore Initiative is proposed to coordinate local, national, and international research, conservation, and policy. Expand
Trophic cascades : the primacy of trait-mediated indirect interactions
It is shown that simple trade-off behaviour can lead to both positive and negative indirect effects of predators on plant resources and hence can explain considerable contingency on the nature and strength of cascading effects among systems. Expand
Trophic Cascades in Terrestrial Systems: A Review of the Effects of Carnivore Removals on Plants
Trophic cascades in terrestrial systems, although not a universal phenomenon, are a consistent response throughout the published studies reviewed here, and this analysis suggests that they occur more frequently in terrestrial Systems than currently believed. Expand
Predator diversity and trophic interactions.
A synthesis of experiments examining multiple-predator-species effects on mortality of single shared prey is provided and it is shown how experimental design and experimental venue can determine the conclusion about the importance of predator diversity on trophic interactions. Expand
Behaviorally mediated trophic cascades : Effects of predation risk on food web interactions
Trophic cascades are regarded as important signals for top-down control of food web dynamics. Although there is clear evidence supporting the existence of trophic cascades, the mechanisms drivingExpand
Effects of Predator Hunting Mode on Grassland Ecosystem Function
  • O. Schmitz
  • Biology, Medicine
  • Science
  • 15 February 2008
A 3-year experiment in grassland mesocosms revealed that actively hunting spiders reduced plant species diversity and enhanced aboveground net primary production and nitrogen mineralization rate, whereas sit-and-wait ambush spiders had opposite effects. Expand
Physiological Stress as a Fundamental Mechanism Linking Predation to Ecosystem Functioning
We present a framework to explain how prey stress responses to predation can resolve context dependency in ecosystem properties and functions such as food chain length, secondary production,Expand
Predator hunting mode and habitat domain alter nonconsumptive effects in predator-prey interactions.
It is found that cues from sit-and-pursue predators evoked stronger NCEs than cues from actively hunting predators, and predator characteristics may be used to predict how changing predator communities translate into changes in prey. Expand
Trait-mediated interactions (TMIs), in which trophic and competitive inter- actions depend on individual traits as well as on overall population densities, have inspired large amounts of research,Expand
Experimental evidence for a behavior-mediated trophic cascade in a terrestrial food chain.
The results demonstrate that the behavioral response of prey to predators can have a strong impact on the dynamics of terrestrial food chains and make a compelling case to examine behavioral as well as density effects in theoretical and empirical research on food chain dynamics. Expand