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Cothurnia limnoriae - NSCEP | US EPA - US Environmental ...

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Vectors<br />

Table 2: Definitions of terms for primary vectors of invasion.<br />

Level 1 Level 2 Level 3 Definition<br />

Ships and Boats<br />

Transport associated with commercial vessels and<br />

recreational boats.<br />

Commercial<br />

Transport associated with commercial vessels<br />

including cruise ships and fishing boats.<br />

Transport of organisms in ballast water, including<br />

Ballast Water species growing on the interior of ballast water tanks<br />

and in the sediment in the bottom of ballast tanks.<br />

Transport of organisms living on or associated with<br />

Solid Ballast solid ballast such as rocks. More important<br />

historically.<br />

Transport of organisms living on or associated with<br />

Hull Fouling the hulls of commercial vessels, including organisms<br />

ensnared on propellers.<br />

Transport associated with other mechanisms on<br />

Other commercial vessels, including bilge water and anchor<br />

chains.<br />

Transport of organisms associated with recreational<br />

Recreational<br />

boats, including boats limited to coastal/inland use and<br />

ocean-going yachts.<br />

Transport of organisms in ballast water, including<br />

Ballast Water<br />

species growing on the interior of ballast water tanks<br />

and in the sediment in the bottom of ballast tanks.<br />

Usually not a major vector in recreational boats.<br />

Transport of organisms living on or associated with<br />

Solid Ballast solid ballast such as rocks. More important<br />

historically.<br />

Transport of organisms living on or associated with<br />

Hull Fouling the hulls of recreational boats, including organisms<br />

ensnared on propellers.<br />

Other<br />

Transport associated with other mechanisms on<br />

recreational boats.<br />

Moveable<br />

Transport of organisms on mobile seagoing structures<br />

Structures<br />

other than ships and boats.<br />

Drilling Platforms<br />

Transport of organisms associated with the movement<br />

of drilling platforms or oil rigs.<br />

Dry Docks<br />

Transport of organisms associated with the movement<br />

of floating dry docks.<br />

Buoys<br />

Transport of organisms associated with the movement<br />

of buoys.<br />

Other<br />

Transport of organisms associated with other<br />

moveable structures.<br />

Aquaculture and<br />

Fisheries<br />

Transport of target species and “hitchhikers”<br />

associated with enhancement of wild fisheries stocks<br />

or aquaculture.<br />

Intentional<br />

Intentional release of a nonindigenous species usually<br />

Stocking/Release<br />

a fishery or recreational species.<br />

Aquaculture<br />

Escapees<br />

Target aquaculture species escaping into the wild.<br />

Aquaculture<br />

Associated Species<br />

Nonindigenous species associated with target<br />

aquaculture species (hitchhikers) escaping into the<br />

wild.<br />

54

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