n=124 r 2 =0.168 San Francisco Bay invasions n=70
Who Spreads from San Francisco Bay? Species with planktonic larvae: 23% Species with nonplanktonic larvae: 50%
Summary: NIS spread (a)Spread patterns within coasts result from a combination of human-mediated transport and natural dispersal --- and their interactions with life history, behavior, abundance, habitat utilization, and current patterns. (b) Frequency differences in spread between coasts may result primarily from differences in “inter-island” distances and rates of natural dispersal.
Assumptions for Current BW Management (BWE) BW is a Dominant Vector Invasion Risk is Greatest in Bays/Estuaries & Decreases Sharply with Distance offshore
Relative Role of Ships’ Ballast vs. Hulls in Coastwise Spread?
Overview A. Initial Introduction of Non-Native Species B. Coastwise Spread of Non-Native Species C. Verification of BWE