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Cal Poly Study Says Benefits Of Marine Protected Area Will Take 20 Years

May 5,2015-

Benefits from a Marine Protected Area are likely to accrue in the California Current ecosystem, but that 20 years or more may be needed to detect significant changes in response variables that are due to MPA implementation .That is the word from a Cal Poly SLO study published in March.

The study is a result of monitoring the first seven years of 4 marine protected areas off the Central Coast. In those areas commercial  fishing is restricted to encourage habitat recovery.

Older reserves show and abundance of larger fish over time while this study showed little change after 7 years.One older reserve area is off Pt Lobos.

“The differences between MPAs and reference sites did not greatly change over the seven years of our study, indicating that reserve benefits will be slow to accumulate in California’s temperate eastern boundary current. Fishes in an older reserve that has been closed to fishing since 1973, however, were significantly more abundant and larger than those in associated reference sites.”

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