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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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Patterns of dispersal from entire plants

Patterns of dispersal from entire plants

(p.77) CHAPTER 5 Patterns of dispersal from entire plants
Dispersal in Plants

Roger Cousens

Calvin Dytham

Richard Law

Oxford University Press

This chapter discusses approaches that have been used to understand how particular shapes and scales of propagule distributions arise around a parent plant. It begins by contrasting two different methods of collecting dispersal data and two fundamentally different ways of presenting the results. It is shown that the frequency distribution of dispersal distance approaches zero at the source, increases to one (or more) maximum, and declines rapidly to a long tail. In contrast, the density of the seed rain declines rapidly with distance, being greatest close to the source plant. Examples are given of models that are being developed to predict dispersal by multiple vectors and over the entire dispersal season. The chapter concludes with a discussion of research methodologies, since these are critical to the success of future empirical research.

Keywords:   parent, distance, model, methodology, shape, scale, vectors, distribution, density, frequency

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