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Entry Pathways

Man has, by his deliberate or accidental actions, transferred many species across great distances and geographic barriers (oceans and mountains) that would not otherwise manage to overcome themselves. Many of these species have been transferred to new areas for cultivation (agriculture, livestock farming, mari culture) and have brought considerable benefits for man. Some of these species have been deliberately released or have escaped, creating wild populations in these areas. Many other species have been transferred to new areas for hunting, aquaria or horticulture and were subsequently either deliberately set free or were accidentally expanded outside the closed off areas (hunting grounds, aquariums or gardens) they were brought in. Also, many species have travelled with people (and still do travel) as “stowaways” and they reached different areas accidentally.

Zebra Mussel (Dreissena polimorpha) – infested ship