globalchange  > 全球变化的国际研究计划
DOI: 10.3354/meps13044
WOS记录号: WOS:000485739800005
论文题名:
Evidence of coral bleaching avoidance, resistance and recovery in the Maldives during the 2016 mass-bleaching event
作者: Cowburn, Benjamin1; Moritz, Charlotte1,2; Grimsditch, Gabriel1; Solandt, Jean-Luc3
通讯作者: Cowburn, Benjamin
刊名: MARINE ECOLOGY PROGRESS SERIES
ISSN: 0171-8630
EISSN: 1616-1599
出版年: 2019
卷: 626, 页码:53-67
语种: 英语
英文关键词: Coral bleaching ; Resilience ; Thermal stress ; Resistance ; Recovery ; Maldives
WOS关键词: REEF-BUILDING CORALS ; ENVIRONMENTAL-IMPACT ; CHAGOS ARCHIPELAGO ; COMMUNITY CHANGE ; CLIMATE-CHANGE ; TEMPERATURE ; ATOLL ; RESILIENCE ; PATTERNS ; MANAGEMENT
WOS学科分类: Ecology ; Marine & Freshwater Biology ; Oceanography
WOS研究方向: Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Oceanography
英文摘要:

During the third global coral bleaching event in 2016, the Maldives experienced elevated water temperatures, inducing coral bleaching. We recorded the bleaching intensity and mortality of coral communities in different habitats, depths and wave exposure conditions around North Ari Atoll in the central Maldives to investigate the effect of physical and biological factors that may contribute to bleaching avoidance, resistance and recovery. Approximately 50% of coral cover bleached and similar to 20% died, with significant variation with wave exposure and depth. Deeper wave-exposed reefs were dominated by bleaching resistant massive and encrusting growth forms and experienced less thermal stress than shallow sheltered reefs. Shallow sheltered reefs showed rapid recovery from the previous mass-bleaching event in 1998, regaining high coral cover dominated by branching and tabular growth forms by 2015. However, these bleaching-sensitive growth forms experienced high bleaching and mortality in 2016, causing greater coral loss. Several of the reefs in central Ari Atoll simultaneously experienced a crown-of-thorn starfish (COTS) outbreak, resulting in very degraded reefs that lacked any apparent resilience in 2017. Our findings demonstrate the complex interactions between different components of resilience. In this case, wave exposure and depth appeared to promote avoidance and resistance of corals to bleaching, but reduced their recovery potential, while the reverse was true for shallow sheltered reefs. The resilience of reefs in the Maldives to date appears to be the result of low thermal and anthropogenic stress; therefore, their future condition will depend on the frequency and intensity of bleaching events and the level of human pressures such as construction and fishing.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/146892
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.IUCN Maldives, Male 20006, Maldives
2.CMOANA Consulting, BP1105, F-98703 Punaauia, French Polynesi, France
3.Marine Conservat Soc, Ross On Wye HR9 7QQ, England

Recommended Citation:
Cowburn, Benjamin,Moritz, Charlotte,Grimsditch, Gabriel,et al. Evidence of coral bleaching avoidance, resistance and recovery in the Maldives during the 2016 mass-bleaching event[J]. MARINE ECOLOGY PROGRESS SERIES,2019-01-01,626:53-67
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