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What is an invasive species? This is actually an area of debate, but generally a species is considered invasive when it is non-native, and disrupts the ecosystem and/or economy.  You may hear the term ‘introduced species,’ which can be distinguished as a species that is non-native, but has not become well-established in the new environment. Not all species that arrive at a new location are actually well-adapted to live there. Yet some do quite well in the new environment for various reasons, including lack of native predators.

The vectors, spread and effects of invasive species are all hot topics and for good reason – with the increased connections between different parts of the globe (airplanes, boats, cars…), there are increased ways for life to move around.

Related posts:

Watch out for invasive lionfish!

Related links:

Invasive Tracers

Guide to identifying native and non-native early stage crabs in New England

Picture: Heather Spence (modeling spread of the asian shore crab)

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1 Comment

  • by Bryan Kelley
    Posted September 27, 2011 4:18 pm 0Likes

    Hello Heather! I just would like to give a huge thumbs up for the great info you have here. I will be coming back to your site for more soon.

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