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Relationship between leaf traits, insect communities and resource availability

thesis
posted on 28.03.2022, 11:49 by Emma Laxton
This project used the resource availability hypothesis (Coley et al., 1985) as a framework for investigating the relationship between resource availability (as defined by soil nutrients), leaf traits, insect herbivore damage and insect community structure. According to the hypothesis, plants from low resource environments should be better-defended, have longer leaf lifespans and slower growth rates than plants from higher resource environments. Higher resource plant species are expected to suffer higher levels of herbivory and recover faster from herbivory than low resource plant species (Coley et al. 1985). A corollary to this hypothesis is that plants from higher resource sites should support greater densities of insect herbivores than low resource species. Comparisons between high and low resource sites were made in terms of: (i) leaf traits of mature and immature leaves; (ii) phenology of leaf maturation; (iii) herbivore damage in the field and laboratory; (iv) diversity and abundance of herbivorous insect fauna; and (v) ability to recover from herbivory.

History

Alternative Title

Leaf traits, insect communities and resource availability.

Table of Contents

Introduction -- Study sites -- Leaf characteristics and resource availability -- Insect herbivory and resource availability -- Insect communities and resource availability -- Influence of resource availability on recovery from herbivory -- Conclusions.

Notes

Bibliography: p. 178-203

Degree Type

Thesis PhD

Degree

Thesis (PhD), Macquarie University, Division of Environmental and Life Sciences, Dept. of Biological Sciences

Department, Centre or School

Dept. of Biological Sciences

Year of Award

2005

Rights

Copyright disclaimer: http://www.copyright.mq.edu.au Copyright Emma Laxton 2005.

Language

English

Jurisdiction

New South Wales

Extent

243 p. ill., maps

Former Identifiers

mq:131 http://hdl.handle.net/1959.14/483