Bottom-up and top-down control of dispersal across major organismal groups

[en] Ecology and evolution unfold in spatially structured communities, where dispersal links dynamics across scales. Because dispersal is multicausal, identifying general drivers remains challenging. In a coordinated distributed experiment spanning organisms from protozoa to vertebrates, we tested whether two fundamental determinants of local dynamics, top-down and bottom-up control, generally explain active dispersal. We show that both factors consistently increased emigration rates and use metacommunity modelling to highlight consequences on local and regional dynamics.

Disciplines :

Environmental sciences & ecology

Author, co-author :

Fronhofer, Emanuel A

Legrand, Delphine

Altermatt, Florian

Ansart, Armelle

Blanchet, Simon

Bonte, Dries

Chaine, Alexis

Dahirel, Maxime

De Laender, Frederik

De Raedt, Jonathan

More authors (15 more)

Language :

English

Title :

Bottom-up and top-down control of dispersal across major organismal groups

Publication date :

2018

Journal title :

Nature Ecology and Evolution

eISSN :

2397-334X

Publisher :

Springer Nature, London, United Kingdom

Volume :

Pages :

1859–1863

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 21 December 2018

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