globalchange  > 全球变化的国际研究计划
DOI: 10.7717/peerj.7473
WOS记录号: WOS:000480646500005
论文题名:
An enigmatic decoupling between heat stress and coral bleaching on the Great Barrier Reef
作者: DeCarlo, Thomas M.1,2; Harrison, Hugo B.3
通讯作者: DeCarlo, Thomas M.
刊名: PEERJ
ISSN: 2167-8359
出版年: 2019
卷: 7
语种: 英语
英文关键词: Coral bleaching ; Climate change ; Heatwaves ; Coral reefs ; Sea surface temperature
WOS关键词: SEA-SURFACE TEMPERATURE ; NUTRIENT ENRICHMENT ; PACIFIC COAST ; IN-SITU ; PATTERNS ; SATELLITE ; RADIATION ; OCEAN ; WAVES ; SUSCEPTIBILITY
WOS学科分类: Multidisciplinary Sciences
WOS研究方向: Science & Technology - Other Topics
英文摘要:

Ocean warming threatens the functioning of coral reef ecosystems by inducing mass coral bleaching and mortality events. The link between temperature and coral bleaching is now well-established based on observations that mass bleaching events usually occur when seawater temperatures are anomalously high. However, times of high heat stress but without coral bleaching are equally important because they can inform an understanding of factors that regulate temperature-induced bleaching. Here, we investigate the absence of mass coral bleaching on the Great Barrier Reef (GBR) during austral summer 2004. Using four gridded sea surface temperature data products, validated with in situ temperature loggers, we demonstrate that the summer of 2004 was among the warmest summers of the satellite era (1982-2017) on the GBR. At least half of the GBR experienced temperatures that were high enough to initiate bleaching in other years, yet mass bleaching was not reported during 2004. The absence of bleaching is not fully explained by wind speed or cloud cover. Rather, 2004 is clearly differentiated from bleaching years by the slow speed of the East Australian Current (EAC) offshore of the GBR. An anomalously slow EAC during summer 2004 may have dampened the upwelling of nutrient-rich waters onto the GBR shelf, potentially mitigating bleaching due to the lower susceptibility of corals to heat stress in low-nutrient conditions. Although other factors such as irradiance or acclimatization may have played a role in the absence of mass bleaching, 2004 remains a key case study for demonstrating the dynamic nature of coral responses to marine heatwaves.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/145367
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作者单位: 1.KAUST, Div Biol & Environm Sci & Engn, Red Sea Res Ctr, Thuwal, Saudi Arabia
2.Univ Western Australia, Australian Res Council, Ctr Excellence Coral Reef Studies, Crawley, WA, Australia
3.James Cook Univ, Ctr Excellence Coral Reef Studies, Australian Res Council, Townsville, Qld, Australia

Recommended Citation:
DeCarlo, Thomas M.,Harrison, Hugo B.. An enigmatic decoupling between heat stress and coral bleaching on the Great Barrier Reef[J]. PEERJ,2019-01-01,7
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