Journal
OIKOS
Volume 121, Issue 12, Pages 1935-1944Publisher
WILEY
DOI: 10.1111/j.1600-0706.2012.20496.x
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Funding
- NSF [OCE-0929691]
- Division Of Ocean Sciences
- Directorate For Geosciences [0929691] Funding Source: National Science Foundation
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We developed a spatially-explicit individual-based model to study how limited perceptual and movement ranges affect spatial predatorprey interactions. Earlier models of predatorprey space games were often developed by modifying ideal free distribution models, which are spatially-implicit and also assume that individuals are omniscient, although some more recent models have relaxed these assumptions. We found that under some conditions, the spatially-explicit model generated similar predictions to previous models. However, the model showed that limited range in a spatially-explicit context generated different predictions when 1) predator density and range are both small, and 2) when the predator movement range varied while the prey range was small. The model suggests that the differences were the result of 1) movement range changing the value of information sources and thus changing the behavior of individual predators and prey and 2) movement range limiting the ability of individuals to exploit the environment.
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