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Dynamic energy landscapes of predators and the implications for modifying prey risk

FUNCTIONAL ECOLOGY (2023)

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Summary: In this study, the authors propose a framework to understand how humans alter predator-prey spatiotemporal overlap, using concepts from behavioural and community ecology. They demonstrate different pathways of human influence on predator-prey dynamics, including impacts on predator diet, predation rates, population demography, and trophic cascades. By analyzing data from camera trap studies on terrestrial mammals, they provide evidence for each of these pathways and point out the challenges and advances in linking human activity to animal behavior change.

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Summary: Landscapes of fear and energy describe the spatial representation of an animal's perceived risk of predation and the associated foraging costs and energetic cost of moving and foraging, respectively. The integration of fear and energy landscapes can provide a better understanding of predator-prey interactions and their ecological consequences. This paradigm considers both prey and predator landscapes and how changes in energyscapes can affect both foraging behavior and the risk effects on prey. The dynamic nature of energy landscapes adds a spatiotemporal component that can cascade through food webs.

FUNCTIONAL ECOLOGY (2023)

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Article Ecology

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Dynamic landscapes of fear: understanding spatiotemporal risk

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Flexible use of a dynamic energy landscape buffers a marine predator against extreme climate variability

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