Data from: Asymmetrical habitat coupling of an aquatic predator – the importance of individual specialisation

Maria H.K. Marklund, Richard Svanback, Leanne Faulks, Martin F. Breed, Kristin Scharnweber, Yinghua Zha & Peter Eklöv
Predators should stabilise food webs because they can move between spatially separate habitats. However, predators adapted to forage on local resources may have a reduced ability to couple habitats. Here we show clear asymmetry in the ability to couple habitats by Eurasian perch – a common polymorphic predator in European lakes. We sampled perch from two spatially separate habitats – pelagic and littoral zones – in Lake Erken, Sweden. Littoral perch showed stronger individual specialisation,...
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