Alien Invaders:


There is a wealth of good information available on the Web about alien invaders and the problems they cause.  Here is a selection that will hopefully help you learn more about this important issue.  A good starting point is a booklet called "100 of the World's most invasive species" which can be downloaded from the Global Invasive Species Database. 


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Aquatic Invaders Campaign Certain imported ornamental water plants have jumped the garden fence and are now choking the life out of the UK's rivers and waterways. These rampant aquatic weeds are still for sale in garden centres.  Read about them here.


Find out about Evolution and Natural Selection at BBC Education

There are a number of excellent fact sheets about British Mammals provided by the Mammal Society.  Information on Mink at  The Animal Diversity web at The University of Michigan Museum of Natural History is a good place for information on any animal, including Coypu.  Use the powerful search engine on the site for information on other animals.  Also, check out the Online museum exhibit at Edinburgh University.

See what the Animal Rights organisation Animal Aid thinks of attempts to remove alien species.  They are opposed to the persecution of Invaders and feel that now they are here they should be left alone.  I don't agree with a lot of what the page says, but it puts the opposite case to control and extermination very well and deserves to be read.  If you have any questions arising from the arguments put forward on the page, please feel free to email me.

Check out, Biodiversity & Conservation: A Hypertext Book by Peter Bryant.  Chapter 9 - Exotic Introductions.

Also, more information on Rhodedendron.


Invasive Species Specialist Group The Invasive Species Specialist Group (ISSG) is part of the Species Survival Commission (SSC) of the World Conservation Union (IUCN). ISSG provides advice on threats from invasives and control or eradication methods to IUCN members, conservation practitioners, and policy-makers.  The group's activities focus primarily on invasive species that cause biodiversity loss, with particular attention to those that threaten oceanic islands.

Secretariat of the Convention on Biological Diversity

The Convention on Biological Diversity promotes nature and human well-being.  Their Introduction to Alien Species is well worth reading.  Also, check out the issue of CBD news which is devoted to Aliens. is the gateway to US Federal efforts concerning invasive species. On this site you can learn about the impacts of invasive species and the Federal government's response, as well as read select species profiles and find links to agencies and organizations dealing with invasive species issues. is also the website for the National Invasive Species Council, which coordinates Federal responses to the problem. is a website gallery is aimed at illustrating the problems that these plants can cause. The site contains a gallery of recent photographs of the main species of problematic plant, including: Crassula helmsii, Myriophyllum aquaticum, Hydrocotyle ranunculoides, Fallopia japonica, Impatiens glandulifera and Heracleum mantagazanium.


Google The Google Web directory has a section devoted entirely to sites about invasive alien species and the threats they pose.  Well worth browsing through if you want to see how different governments around the world are tackling the problem.


Last, but definitely not least, The Instutute for Biological Invasions at the University of Tennessee Department of Ecology and Evolutionary Biology, is well worth a visit!

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