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The United States West Coast scored 71 out of 100 in an assessment of the Ocean Health Index (published in PLOS ONE). Regional data replaced global data for 80% of the 49 data layers examined. Scores were calculated for five coastal sub-regions - Washington, Oregon, Northern California, Central California and Southern California - and the overall score is the area - weighted average of those five scores.
Scores for each Index goal were calculated for the 3 states on the United States West Coast (see maps below)
(Out of 100)
u.s. West coast Assessment
TOP 5 FINDINGS OF THE STUDY
1) Individual goal scores for the overall region ranged from 20 (Mariculture) to 99 (Tourism and Recreation)
2) Tourism and Recreation, Clean Waters and Livelihoods and Economies scored highest. Artisanal Fishing Opportunities, Carbon Storage, Coastal Protection and Sense of Place scored the lowest
3) Goal scores that depend on coastal habitats (Carbon Storage, Coastal Protection and Biodiversity) scored relatively low due to the historical and continuing decline in extent or condition of salt marshes, sea grasses and sand dunes
4) Status for most goals declined during the past 10 years, but likely future scores suggest near-term improvement may occur for most goals in most regions. Exceptions were Coastal Livelihoods and Economies in Washington; Fisheries and Species Biodiversity in Oregon; Fisheries, Species Biodiversity, Carbon Storage and Coastal Livelihoods and Economies in Northern California; and Species Biodiversity and Fisheries in Central and Southern California
5) The U.S. West Coast regional study was completed using two methods. The first using equal goal weights (like the global model). The second changing the goal weights from equal to regionally-specific (determined by an expert panel - Halpern et. al. 2013) that gave the highest weight to clean waters and sense of place. This second method -- produced lower scores for some sub-regions and higher scores for others, but only changed scores a point or two.
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