Reefscapes of fear: predation risk and reef hetero-geneity interact to shape herbivore foraging behaviour

The Journal of Animal Ecology
Laura B CatanoDeron E Burkepile

Abstract

Predators can exert strong direct and indirect effects on ecological communities by intimidating their prey. The nature of predation risk effects is often context dependent, but in some ecosystems these contingencies are often overlooked. Risk effects are often not uniform across landscapes or among species. Indeed, they can vary widely across gradients of habitat complexity and with different prey escape tactics. These context dependencies may be especially important for ecosystems such as coral reefs that vary widely in habitat complexity and have species-rich predator and prey communities. With field experiments using predator decoys of the black grouper (Mycteroperca bonaci), we investigated how reef complexity interacts with predation risk to affect the foraging behaviour and herbivory rates of large herbivorous fishes (e.g. parrotfishes and surgeonfishes) across four coral reefs in the Florida Keys (USA). In both high and low complexity areas of the reef, we measured how herbivory changed with increasing distance from the predator decoy to examine how herbivorous fishes reconcile the conflicting demands of avoiding predation vs. foraging within a reefscape context. We show that with increasing risk, herbivorous fishes con...Continue Reading

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Citations

Aug 31, 2016·Annual Review of Marine Science·Alastair R HarbornePeter J Mumby
Feb 25, 2017·F1000Research·Deron E Burkepile, John D Parker
Nov 18, 2017·Scientific Reports·Douglas B RasherMark E Hay
May 8, 2018·Ecology·Miranda B HaggertyJeremy D Long
Apr 25, 2019·Proceedings. Biological Sciences·Elizabeth M P MadinJoshua S Madin
Mar 5, 2020·Proceedings. Biological Sciences·Christopher P CatanoJonathan A Myers
Sep 30, 2020·Ecology Letters·Aaron J WirsingOswald J Schmitz
Dec 26, 2019·PeerJ·Mukta WatveBarbara Taborsky
Apr 2, 2020·Proceedings. Biological Sciences·Jarrod J ScottDouglas B Rasher
Feb 13, 2019·Trends in Ecology & Evolution·Kaitlyn M GaynorJustin S Brashares

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