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Dispersal in PlantsA Population Perspective$
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Roger Cousens, Calvin Dytham, and Richard Law

Print publication date: 2008

Print ISBN-13: 9780199299126

Published to Oxford Scholarship Online: May 2008

DOI: 10.1093/acprof:oso/9780199299126.001.0001

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Invasions and range expansion

Invasions and range expansion

Chapter:
(p.113) CHAPTER 6 Invasions and range expansion
Source:
Dispersal in Plants
Author(s):

Roger Cousens

Calvin Dytham

Richard Law

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199299126.003.0006

This chapter explores the spatial dynamics of invading species, paying particular attention to the patterns formed as they spread, i.e., the rate of increase of the area invaded and the rate at which their boundaries move. The development of models for population expansion — comprising a range of structures and assumptions both simple and complex — is reviewed. Rare long distance dispersal events are shown to dictate the rate of spread, the pattern in population margins, and the distribution of genotypes. Movement through heterogeneous landscapes is shown to be further affected by the connectivity and distribution of suitable patches.

Keywords:   spread, boundaries, margins, area, genotype, distribution, heterogeneous, connectivity, habitat

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