globalchange  > 全球变化的国际研究计划
DOI: 10.1007/s00338-019-01796-7
WOS记录号: WOS:000479051100013
论文题名:
Limited coral mortality following acute thermal stress and widespread bleaching on Palmyra Atoll, central Pacific
作者: Fox, Michael D.1,2; Carter, Amanda L.1; Edwards, Clinton B.1; Takeshita, Yuichiro3; Johnson, Maggie D.1,4,5,6; Petrovic, Vid7; Amir, Corinne G.1; Sala, Enric8; Sandin, Stuart A.1; Smith, Jennifer E.1
通讯作者: Fox, Michael D. ; Smith, Jennifer E.
刊名: CORAL REEFS
ISSN: 0722-4028
EISSN: 1432-0975
出版年: 2019
卷: 38, 期:4, 页码:701-712
语种: 英语
英文关键词: Climate change ; Coral bleaching ; Warming ; Coral reefs ; El Nino ; Crustose coralline algae ; Herbivory
WOS关键词: MONTIPORA CAPITATA ; EL-NINO ; PATTERNS ; REEF ; RESILIENCE ; RECOVERY ; WINNERS ; TEMPERATURE ; DISTURBANCE ; SETTLEMENT
WOS学科分类: Marine & Freshwater Biology
WOS研究方向: Marine & Freshwater Biology
英文摘要:

During 2015-2016, an El Nino and associated warm water event caused widespread coral bleaching across the equatorial Pacific. Here, we combine 8 yr of benthic monitoring data from permanent photoquadrats with remotely sensed and in situ temperature measurements to assess the impact of the warming event on benthic communities at Palmyra Atoll. We quantified bleaching prevalence across two distinct reef habitats using the best available data. On the fore reef (similar to 10 m depth), we quantified bleaching severity within 100-200 m(2) large-area plots using the custom visualization and analysis software, Viscore. On the reef terrace (similar to 5 m depth), we used 95 focal colonies across three species that have been monitored annually since 2014. The 2015-2016 warm water event was the most extreme such event recorded on Palmyra in the past several decades with a maximum cumulative heat stress (degree heating weeks) of 11.9 degrees C-weeks. On the fore reef, 90% of live coral cover exhibited some degree of bleaching (32% severe bleaching). On the shallow reef terrace, bleaching was observed in 93% of the focal colonies across all species. Overall, coral cover declined 9% on the fore reef from 2014 to 2017, whereas coral cover did not change on the terrace. These contrasting results may be associated with typical daily temperature ranges on the terrace that are three times greater than on the fore reef. Permanent photoquadrats showed that turf algae initially colonized skeletons of recently dead corals but transitioned to crustose coralline algae within a year. Collectively, our study emphasizes that comprehensive monitoring of benthic communities over time combined with in situ temperature data can provide taxonomically precise trajectories of community change during and following thermal stress.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/144215
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92037 USA
2.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA
3.Monterey Bay Aquarium Res Inst, Moss Landing, CA 95039 USA
4.Tenenbaum Marine Observ Network, Edgewater, MD 21037 USA
5.Smithsonian Trop Res Inst, Panama City, Panama
6.Smithsonian Marine Stn, Ft Pierce, FL 34946 USA
7.Univ Calif San Diego, Dept Comp Sci & Engn, La Jolla, CA 92037 USA
8.Natl Geog Soc, Washington, DC 20036 USA

Recommended Citation:
Fox, Michael D.,Carter, Amanda L.,Edwards, Clinton B.,et al. Limited coral mortality following acute thermal stress and widespread bleaching on Palmyra Atoll, central Pacific[J]. CORAL REEFS,2019-01-01,38(4):701-712
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