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Chapter 8 - The insidious threat of invasive invertebrates

Published online by Cambridge University Press:  05 November 2014

By
Darren F. Ward
Edited by
Adam Stow ,
Norman Maclean  and
Gregory I. Holwell
Darren F. Ward
Affiliation:
New Zealand Arthropod Collection
Adam Stow
Affiliation:
Macquarie University, Sydney
Norman Maclean
Affiliation:
University of Southampton
Gregory I. Holwell
Affiliation:
University of Auckland
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Summary

Summary

Exotic invertebrates make up a sizeable, and growing, proportion of invertebrates in both Australia and New Zealand. However, there is a general lack of awareness of the impacts (realised or potential) of invasive invertebrates, and very few species have a high public profile. Border interception records show the sheer number and diversity of invertebrates being transported around the globe by human trade. In-depth studies on empty sea containers, ants and forestry insects, confirm that trade pathways are regularly contaminated with timber, agricultural and nuisance arthropod pests. A principal feature of the biosecurity systems in Australia and New Zealand is their holistic nature of managing invasive species through assessing threats pre-border, having high levels of surveillance at the border, and their rapid response to any incursions of new species. However, despite these systems many new species establish each year. Several issues are discussed that will be important over the next few decades: (i) the need for evidence of ecological impacts; (ii) climate change and trade liberalisation (which will affect which species will become invasive in the future); and (iii) improved technology and capability (needed to show there is the ability to manage invasive invertebrates).

Introduction

Intensification of human transportation and commerce around the world has led to the widespread movement of many species outside of their native range (Mack et al. 2000). As a result, biological invasions are now a global phenomenon, and are widely recognised as a significant component of global change, affecting agro-forestry industries, natural ecosystems and social activities (Mack et al. 2000; Pimentel 2002).

Type
Chapter
Information
Austral Ark
The State of Wildlife in Australia and New Zealand
 , pp. 162 - 185
Publisher: Cambridge University Press
Print publication year: 2014

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