作者
Evan L Preisser, John L Orrock, Oswald J Schmitz
发表日期
2007/11
期刊
Ecology
卷号
88
期号
11
页码范围
2744-2751
出版商
Ecological Society of America
简介
Predators can affect prey populations through changes in traits that reduce predation risk. These trait changes (nonconsumptive effects, NCEs) can be energetically costly and cause reduced prey activity, growth, fecundity, and survival. The strength of nonconsumptive effects may vary with two functional characteristics of predators: hunting mode (actively hunting, sit‐and‐pursue, sit‐and‐wait) and habitat domain (the ability to pursue prey via relocation in space; can be narrow or broad). Specifically, cues from fairly stationary sit‐and‐wait and sit‐and‐pursue predators should be more indicative of imminent predation risk, and thereby evoke stronger NCEs, compared to cues from widely ranging actively hunting predators. Using a meta‐analysis of 193 published papers, we found that cues from sit‐and‐pursue predators evoked stronger NCEs than cues from actively hunting predators. Predator habitat domain was …
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