Invasive species – understanding the threat before it’s too late

Northeastern University press release: Catching rides on cargo ships and fishing boats, many invasive species are now covering our shorelines and compromising the existence of our native marine life. In a study published in Ecology Letters, Northeastern University Prof. David Kimbro and his team examine what factors allow some invasive species to survive in their new environments and others to fail.

Once invasive species arrive in their new location, they begin multiplying, and in some cases, overpowering the local marine life. This can have a very strong impact on our ecosystems and businesses, such as fisheries.

Understanding what makes these invaders thrive or fail in their new environments is not only key to preventing the collapse of local marine life, but also figuring out ways to make some invaders work to benefit their new locations. “Not all invasive species are bad. In fact, we need some of them to succeed. But invasions are certainly a double-edged sword because many invasions cost us a lot in terms of money and natural heritage.”

…“For the past 15 years, marine scientists have conducted a lot of experiments that have taught us a lot about specific invasions in many different places. But unlike terrestrial scientists, no one had pieced all of these unique stories together to see if they collectively tell us a general and useful message. And until we see cattle swimming and kudzu growing in the ocean, we can’t just recycle the messages from land studies and use them to manage our coastal systems.”…

A cotton-tailed rabbit surrounded by garlic mustard, mugwort (? and burdock). None of these invasive species are food for this animal. Shot by Sue Sweeney, Wikimedia Commons, under the Creative Commons Attribution-Share Alike 3.0 Unported license