Skip to main content Accessibility help
×
Hostname: page-component-7b7567c8c-wxvwp Total loading time: 0 Render date: 2026-11-15T15:22:55.451Z Has data issue: false hasContentIssue false

6 - Urbanisation and alien invasion

Published online by Cambridge University Press:  05 June 2012

Kevin J. Gaston
Affiliation:
University of Sheffield
Get access

Summary

Introduction

Urbanisation is a rapidly developing process of global change. The world's human population in 1900 was around 1.6 billion, of which 13% lived in cities (UN-HABITAT2003, 2006). Within 100 years the world population increased to 6.5 billion and the urban population increased to 50% (UN-HABITAT 2006). This increase will continue rapidly. In Europe and other highly industrialised regions the percentage of urban population is already much higher (>70%). This urban population growth is strongly connected with an increase in the size and intensity of urban land-use. As a consequence of land-use change, more and more plant and animal habitats have been lost. Urbanisation is a major driver of plant and animal extinction on a regional scale (Fuller & Gaston 2009). The species most affected have been those of wet and very pristine habitats, as well as those of extensive agricultural lands like meadow and pasture, all of which have become rarer in heavily used landscapes such as those of Germany (Klotz 1989).

The concentration of the human population has resulted in an increase in traffic and transport of food, raw materials etc., and growing needs for open space recreation activities such as gardening and walking. Additionally, landscaping and gardening, as well as vegetable and ornamental plant production, are concentrated in urbanised regions. Therefore we have two of the general prerequisites for species introductions into cities. First, there is the concentration of intentional introductions of plant and animal species.

Information

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Book purchase

Temporarily unavailable

Save book to Kindle

To save this book to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

Available formats
×