globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13895
Scopus记录号: 2-s2.0-85041291395
论文题名:
Thermal refugia against coral bleaching throughout the northern Red Sea
作者: Osman E.O.; Smith D.J.; Ziegler M.; Kürten B.; Conrad C.; El-Haddad K.M.; Voolstra C.R.; Suggett D.J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期:2
起始页码: e474
结束页码: e484
语种: 英语
英文关键词: coral bleaching ; global warming ; refugia ; remote sensing ; thermal tolerance
Scopus关键词: coral bleaching ; coral reef ; global warming ; reef formation ; refugium ; remote sensing ; temperature anomaly ; temperature tolerance ; water temperature ; Indian Ocean ; Red Sea [Indian Ocean] ; Anthozoa
英文摘要: Tropical reefs have been impacted by thermal anomalies caused by global warming that induced coral bleaching and mortality events globally. However, there have only been very few recordings of bleaching within the Red Sea despite covering a latitudinal range of 15° and consequently it has been considered a region that is less sensitive to thermal anomalies. We therefore examined historical patterns of sea surface temperature (SST) and associated anomalies (1982–2012) and compared warming trends with a unique compilation of corresponding coral bleaching records from throughout the region. These data indicated that the northern Red Sea has not experienced mass bleaching despite intensive Degree Heating Weeks (DHW) of >15°C-weeks. Severe bleaching was restricted to the central and southern Red Sea where DHWs have been more frequent, but far less intense (DHWs <4°C-weeks). A similar pattern was observed during the 2015–2016 El Niño event during which time corals in the northern Red Sea did not bleach despite high thermal stress (i.e. DHWs >8°C-weeks), and bleaching was restricted to the central and southern Red Sea despite the lower thermal stress (DHWs < 8°C-weeks). Heat stress assays carried out in the northern (Hurghada) and central (Thuwal) Red Sea on four key reef-building species confirmed different regional thermal susceptibility, and that central Red Sea corals are more sensitive to thermal anomalies as compared to those from the north. Together, our data demonstrate that corals in the northern Red Sea have a much higher heat tolerance than their prevailing temperature regime would suggest. In contrast, corals from the central Red Sea are close to their thermal limits, which closely match the maximum annual water temperatures. The northern Red Sea harbours reef-building corals that live well below their bleaching thresholds and thus we propose that the region represents a thermal refuge of global importance. © 2017 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110557
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Coral Reef Research Unit, School of Biological Sciences, University of Essex, Essex, United Kingdom; Marine Biology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt; Red Sea Research Center, Division of Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia; MBC-Marine Biology College, South Marsa Alam, Egypt; National Institute of Oceanography and Fisheries (NIOF), Suez, Egypt; Climate Change Cluster, University of Technology, Sydney, NSW, Australia

Recommended Citation:
Osman E.O.,Smith D.J.,Ziegler M.,et al. Thermal refugia against coral bleaching throughout the northern Red Sea[J]. Global Change Biology,2018-01-01,24(2)
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