Factors Influencing Densities of Non-Indigenous Species in the Ballast Water of Ships Arriving at Ports in Puget Sound, Washington, United States.

摘要

Oceanographic characteristics and the presence of international shipping in Puget Sound, Washington, USA contribute to its vulnerability to non-indigenous species (NIS) invasions. To evaluate NIS arriving in ballast water, zooplankton was sampled in 380 ballast tanks of ships after they entered Puget Sound.