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Dispersal Ecology and Evolution$
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Jean Clobert, Michel Baguette, Tim G. Benton, and James M. Bullock

Print publication date: 2012

Print ISBN-13: 9780199608898

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199608898.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 27 September 2021

Integrating context- and stage-dependent effects in studies of frugivorous seed dispersal: an example from south-east Kenya

Integrating context- and stage-dependent effects in studies of frugivorous seed dispersal: an example from south-east Kenya

Chapter:
(p.50) Chapter 5 Integrating context- and stage-dependent effects in studies of frugivorous seed dispersal: an example from south-east Kenya
Source:
Dispersal Ecology and Evolution
Author(s):

Valérie Lehouck

Dries Bonte

Toon Spanhove

Luc Lens

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199608898.003.0005

This chapter begins with a definition of endozoochory, which refers to plant dispersal where viable seeds are defaecated or regurgitated by animals. Because of the biotic interaction involved, endozoochorous seed dispersal largely depends on the behavioural components of the dispersing vectors, such as foraging and seed handling, movement away from the parent tree, and defaecation or regurgitation. This makes endozoochorous seed dispersal clumped and non-random, in contrast to most abiotically dispersal methods. The main selective forces driving the evolution of dispersal-related traits include avoidance of kin competition by escaping high seed and seedling mortality near the parent tree, directing dispersal towards suitable habitat, and colonisation of new habitat as a risk-spreading strategy. Changes in landscape composition may affect endozoochorous seed dispersal through changes in plant habitat configuration and vector community composition and behaviour.

Keywords:   endozoochory, plant dispersal, biotic interaction, behavioural components, dispersing vectors, abiotically dispersed seeds

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