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Overview of the issue
Regulations The MBNMS has regulations prohibiting the introduction of introduced species from within or into the Sanctuary, (except striped bass (Morone saxatilis) released during catch and release fishing activity). SPECIAL NOTE: Unfortunately, this provision does not apply in the area of the Sanctuary lying within the seaward boundary of California, because the Governor of California filed an objection to this provision pursuant to section 304(b) of the National Marine Sanctuaries Act. Eradication Eradication of introduced species is difficult and often impossible, and management practices focus largely on prevention of introductions. The Sanctuary has conducted some limited research and education on this issue and occasionally reviewed and provided comments to other agencies on ways to prevent introductions. MBNMS has also organized an attempt to eradicate the invasive alga Undaria pinnatifida from Monterey Harbor. |
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Although the effects of introduced aquatic species on habitats they colonize is often unknown, some clearly have had serious negative influences. Impacts often include decreasing abundance and even local extinction of native species, alteration of habitat structure, and extensive economic costs due to biofouling. Probably the most important mechanism for the introduction of aquatic species is transport in ship ballast tanks, though other mechanisms such as introduction through improper disposal of aquarium materials, bait and seafood packing materials, aquaculture operations, and research activities can contribute to the issue.
