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There are two basic approaches to limiting the spread of invasive species: a species-by-species assessment of the risks or benefits of admitting or excluding species, and a policy based on controlling pathways of entry in which vigilance is maintained on incoming ballast tanks, cargo holds, packing materials, and similar vehicles for unwanted organisms. These two approaches may complement each other. Policymakers also may emphasize prevention over post hoc control or vice-versa, or they may adopt a combination of the two approaches. Congressional Research Service Report R44011.

Congressional Research Service (CRS Report - R43258); prepared for Members and Committees of Congress.
See also: All Congressional Research Service (CRS) Reports for other related invasive species reports.

A species of king crab, Paralomis birsteini, on the continental slope off the Antarctic Peninsula. The discovery of the shell-breaking crustaceans has scientists worried about the threat to seafloor organisms on the continental shelf.

It's the Law -- If you are moving from a spongy moth quarantine area to a non-quarantine area, you must inspect your outdoor household items for the spongy moth and remove all life stages of this destructive insect before you move.
See also: Spongy Moth

Laurel wilt disease has been spreading through the U.S. since 2002 and is fatal to tree species in the laurel family. Forest Service researchers are continuing to monitor the disease, search for treatment methods, and develop a better understanding of how it is affecting sassafras and other susceptible species.

See also: Foot-and-Mouth Disease Emergency Response for more information

See also: Pest Alert [PDF, 0.98 MB]

The green crab is considered one of the most invasive species in the marine environment. It has few predators, aggressively hunts and eats its prey, destroys seagrass, and outcompetes local species for food and habitat. Green crab could potentially damage Alaska’s multi-billion dollar fisheries industries, especially for salmon, crab, and mariculture operations. There are three simple steps you can take to help find, remove and report these crabs on your local beaches. Find it, Keep it, Freeze it!

Chapter 20 (pages 232-244) in:  Invasive Plant Management Issues and Challenges in the United States: 2011 Overview; Westbrooks, R., et al.; ACS Symposium Series; American Chemical Society: Washington, DC, 2011.

There is mounting concern over the increase in debris in our ocean and the potential for that debris to assist in the spread of non-native species. While the pathways associated with global shipping draw the greatest amount of attention regarding marine invasives, the purpose of this paper is to consider the potential role that marine debris may play in introducing non-native species that may become invasive. This report reviews the scientific literature that exists on the subject and identifies areas where more research is needed.