Scleractinian coral population size structures and growth rates indicate coral resilience on the fringing reefs of North Jamaica
Scleractinian coral population size structures and growth rates indicate coral resilience on the fringing reefs of North Jamaica
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DOI：
10.1016/j.marenvres.2009.01.003
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发表时间：
2009-05-01
影响因子：
3.3
通讯作者：
Crabbe, M. J. C.
中科院分区：
文献类型：
--
作者：
Crabbe, M. J. C.
世界各地的珊瑚礁都面临着许多环境因素的严峻挑战。本文量化了2000年至2008年珊瑚种群的规模结构和增长率，以测试愉景湾珊瑚群落在面对飓风和白化等多重急性压力时是否表现出弹性。在2005年的大规模白化之后，2006年所有地点的所有物种的最小尺寸类的殖民地数量都有所减少，随后在2007年和2008年所有地点的所有物种都有所增加。2000-2008年，非分枝珊瑚的径向生长率（毫米年（-1））和分枝珊瑚的线性生长率（毫米年（-1））在时空上几乎没有显著差异。牛乳礁的活珊瑚覆盖率由2006年的13 +/- 5%上升至2007年的20 +/- 9%及2008年的31 +/- 7%，而活鹿角珊瑚则由2006年的2 +/- 2%上升至2007年的10 +/- 4%及2008年的22 +/- 7%。这些研究表明，牙买加愉景湾周围的珊瑚礁具有良好的恢复能力。2009爱思唯尔有限公司版权所有。
Coral reefs throughout the world are under severe challenges from many environmental factors. This paper quantifies the size structure of populations and the growth rates of corals from 2000 to 2008 to test whether the Discovery Bay coral colonies showed resilience in the face of multiple acute stressors of hurricanes and bleaching. There was a reduction in numbers of colonies in the smallest size class for all the species at all the sites in 2006, after the mass bleaching of 2005, with subsequent increases for all species at all sites in 2007 and 2008. Radial growth rates (mm yr(-1)) of non-branching corals and linear extension rates (mm yr(-1)) of branching corals calculated on an annual basis from 2000-2008 showed few significant differences either spatially or temporally. At Dairy Bull reef, live coral cover increased from 13 +/- 5% in 2006 to 20 +/- 9% in 2007 and 31 +/- 7% in 2008, while live Acropora species increased from 2 +/- 2% in 2006 to 10 +/- 4% in 2007 and 22 +/- 7% in 2008. These Studies indicate good levels of coral resilience on the fringing reefs around Discovery Bay in Jamaica. (C) 2009 Elsevier Ltd. All rights reserved.