|Nothing but green crabs at Black's Creek, day after day!|
|A detailed close-up of the green crab's carapace.|
|Blue marks the native range, red marks where they have been introduced, black dots mark where there was a single sighting but did not lead to an invasion, and green areas mark the potential range of the green crab.|
Green crabs are #18 in the list of the world's worst 100 invaders, but how do they harm the ecosystem they invade?
Green crabs are known as a voracious predator, which means they are extremely aggressive and consume large quantities of food. They are known to threaten mussel farms, pose significant impacts on native species such as mollusks and other crustaceans by predation, competition and habitat modification, and they were one of the causes of the collapse of soft-shell clam industries. In just the US alone, green crabs cause about $22 million dollars worth of damage... each year!
They are also known to decrease the biodiversities and biomass in each community they invade, and they certainly have been doing just that at Black's Creek.
|"Aaarrgh!! This is my territory now!!"|
|The kids love racing the green crabs.|