Journal article

Anywhere but here: local conditions motivate dispersal in Daphnia

Philip Erm, Matthew D Hall, Ben L Phillips

PEERJ | PEERJ INC | Published : 2019

Abstract

Dispersal is fundamental to population dynamics. However, it is increasingly apparent that, despite most models treating dispersal as a constant, many organisms make dispersal decisions based upon information gathered from the environment. Ideally, organisms would make fully informed decisions, with knowledge of both intra-patch conditions (conditions in their current location) and extra-patch conditions (conditions in alternative locations). Acquiring information is energetically costly, however, and extra-patch information will typically be costlier to obtain than intra-patch information. As a consequence, theory suggests that organisms will often make partially informed dispersal decision..

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University of Melbourne Researchers