The near-term progression of ocean acidification (OA) is projected to bring about sharp changes in the chemistry of coastal upwelling ecosystems. The distribution of OA exposure across these early-impact systems, however, is highly uncertain and limits our understanding of whether and how spatial management actions can be deployed to ameliorate future impacts. Through a novel coastal OA observing network, researchers have uncovered a remarkably persistent spatial mosaic in the penetration of acidified waters into ecologically-important nearshore habitats across 1,000 km of the California Current Large Marine Ecosystem. In the most severe exposure hotspots, suboptimal conditions for calcifying organisms encompassed up to 56% of the summer season, and were accompanied by some of the lowest and most variable pH environments known for the surface ocean. Persistent refuge areas were also found, highlighting new opportunities for local adaptation to address the global challenge of OA in productive coastal systems.

Authors: Chan, F., Barth, J.A., Blanchette, C.A., Byrne, R.H., Chavez, F., Cheriton, O., Feely, R.A., Friederich, G., Gaylord, B., Gouhier, T. and Hacker, S.

Short Description: 
A novel coastal ocean acidification observing network let researchers uncover a persistent spatial mosaic in the penetration of acidified waters into ecologically-important nearshore habitats across the California Current Large Marine Ecosystem.
Product Number: 
ORESU-R-17-026
Entry Date: 
Tuesday, May 15, 2018
Length: 
7 pages
Source (Journal Article): 
Scientific Reports, 7:2526, May 31, 2017
DOI Number (Journal Article): 
10.1038/s41598-017-02777-y
Year of Publication: 
2017
How to Order: 

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