Persistent spatial structuring of coastal ocean acidification in the California Current System.
Persistent spatial structuring of coastal ocean acidification in the California Current System.
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DOI：
10.1038/s41598-017-02777-y
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发表时间：
2017-05-31
影响因子：
4.6
通讯作者：
Washburn L
中科院分区：
文献类型：
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作者：
Chan F;Barth JA;Blanchette CA;Byrne RH;Chavez F;Cheriton O;Feely RA;Friederich G;Gaylord B;Gouhier T;Hacker S;Hill T;Hofmann G;McManus MA;Menge BA;Nielsen KJ;Russell A;Sanford E;Sevadjian J;Washburn L
海洋酸化（OA）的近期进展预计将给沿海上升流生态系统的化学成分带来急剧变化。然而，OA 暴露在这些早期影响系统中的分布是高度不确定的，限制了我们对是否以及如何部署空间管理行动来改善未来影响的理解。通过新型沿海 OA 观测网络，我们发现酸化水域渗透到加州洋流大型海洋生态系统 1,000 公里范围内具有重要生态意义的近岸生境中存在一种非常持久的空间镶嵌现象。在最严重的暴露热点地区，钙化生物的次优条件占据了夏季高达 56% 的时间，并且伴随着一些已知的表层海洋 pH 值最低和变化最大的环境。还发现了持久的避难区，突出了当地适应的新机会，以应对生产性沿海系统中OA的全球挑战。
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, we 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.