Thermal stress exposure, bleaching response, and mortality in the threatened coral &ITAcropora palmata&IT

被引：25

作者：

Williams, D. E. ^{[1
,2
]}

Miller, M. W. ^{[2
]}

Bright, A. J. ^{[1
,2
]}

Pausch, R. E. ^{[1
,2
]}

Valdivia, A. ^{[1
]}

机构：

[1] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Cooperat Inst Marine & Atmospher Studies, 4600 Rickenbacker Cswy, Miami, FL 33149 USA

[2] NOAA, Natl Marine Fisheries Serv, Southeast Fisheries Sci Ctr, 75 Virginia Beach Dr, Miami, FL 33149 USA

来源：

MARINE POLLUTION BULLETIN | 2017年 / 124卷 / 01期

关键词：

Elkhorn; Western Atlantic; Genotype; Florida keys; Acclimatization; Threshold; US VIRGIN-ISLANDS; GREAT-BARRIER-REEF; ACROPORA-PALMATA; CLIMATE-CHANGE; FLORIDA-KEYS; ST-CROIX; POPULATION; EVENT; TOLERANCE; DYNAMICS;

D O I：

10.1016/j.marpolbul.2017.07.001

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Demographic data for Elkhorn coral, Acropora palmata, and in situ water temperature data from seven upper Florida Keys (USA) reefs revealed three warm thermal stress events between 2010 and 2016. During a mild bleaching event in 2011, up to 59% of colonies bleached, but no mortality resulted. In both 2014 and 2015, severe and unprecedented bleaching was observed with up to 100% of colonies bleached. A. palmata live tissue cover declined by one-third following the 2014-2015 events. Colony mortality of mildly- and non-bleached colonies did not differ but increased significantly with more severe bleaching. Increased bleaching prevalence corresponded to maximum daily average water temperatures above 31.3 degrees C. However, the cumulative days with daily average exceeding 31.0 degrees C provided a better predictor of bleaching response. The bleaching response of surviving colonies in 2015 was not consistent with acclimatization as most individual colonies bleached at least as badly as in 2014.

引用

页码：189 / 197

页数：9

共 62 条

[1] CORAL-REEF MORPHOGENESIS - MULTIDIMENSIONAL MODEL [J].