globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1915395117
论文题名:
Nitrogen pollution interacts with heat stress to increase coral bleaching across the seascape
作者: Donovan M.K.; Adam T.C.; Shantz A.A.; Speare K.E.; Munsterman K.S.; Rice M.M.; Schmitt R.J.; Holbrook S.J.; Burkepile D.E.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:10
起始页码: 5351
结束页码: 5357
语种: 英语
英文关键词: Acropora ; Climate change ; Coral reef ; Nutrient availability ; Pocillopora
Scopus关键词: nitrogen ; nitrogen ; Acropora ; Article ; bleaching ; climate change ; climate resilience ; controlled study ; coral ; coral reef ; French Polynesia ; heat stress ; nitrogen availability ; nonhuman ; Pocillopora ; priority journal ; sea pollution ; animal ; Anthozoa ; climate change ; green alga ; growth, development and aging ; heat ; heat shock response ; island (geological) ; physiology ; pollution ; Polynesia ; symbiosis ; Animals ; Anthozoa ; Chlorophyta ; Climate Change ; Environmental Pollution ; Heat-Shock Response ; Hot Temperature ; Islands ; Nitrogen ; Polynesia ; Symbiosis
英文摘要: Climate change is increasing the frequency and magnitude of temperature anomalies that cause coral bleaching, leading to widespread mortality of stony corals that can fundamentally alter reef structure and function. However, bleaching often is spatially variable for a given heat stress event, and drivers of this heterogeneity are not well resolved. While small-scale experiments have shown that excess nitrogen can increase the susceptibility of a coral colony to bleaching, we lack evidence that heterogeneity in nitrogen pollution can shape spatial patterns of coral bleaching across a seascape. Using island-wide surveys of coral bleaching and nitrogen availability within a Bayesian hierarchical modeling framework, we tested the hypothesis that excess nitrogen interacts with temperature anomalies to alter coral bleaching for the two dominant genera of branching corals in Moorea, French Polynesia. For both coral genera, Pocillopora and Acropora, heat stress primarily drove bleaching prevalence (i.e., the proportion of colonies on a reef that bleached). In contrast, the severity of bleaching (i.e., the proportion of an individual colony that bleached) was positively associated with both heat stress and nitrogen availability for both genera. Importantly, nitrogen interacted with heat stress to increase bleaching severity up to twofold when nitrogen was high and heat stress was relatively low. Our finding that excess nitrogen can trigger severe bleaching even under relatively low heat stress implies that mitigating nutrient pollution may enhance the resilience of coral communities in the face of mounting stresses from global climate change. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164290
Appears in Collections:气候变化与战略

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作者单位: Donovan, M.K., Marine Science Institute, University of California, Santa Barbara, CA 93106, United States; Adam, T.C., Marine Science Institute, University of California, Santa Barbara, CA 93106, United States; Shantz, A.A., Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, United States, Department of Biology, Pennsylvania State University, University Park, PA 16802, United States; Speare, K.E., Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, United States; Munsterman, K.S., Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, United States; Rice, M.M., Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, United States; Schmitt, R.J., Marine Science Institute, University of California, Santa Barbara, CA 93106, United States, Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, United States; Holbrook, S.J., Marine Science Institute, University of California, Santa Barbara, CA 93106, United States, Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, United States; Burkepile, D.E., Marine Science Institute, University of California, Santa Barbara, CA 93106, United States, Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA 93106, United States

Recommended Citation:
Donovan M.K.,Adam T.C.,Shantz A.A.,et al. Nitrogen pollution interacts with heat stress to increase coral bleaching across the seascape[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(10)
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