Recurrent disturbances, recovery trajectories, and resilience of coral assemblages on a South Central Pacific reef
Recurrent disturbances, recovery trajectories, and resilience of coral assemblages on a South Central Pacific reef
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DOI：
10.1007/s00338-009-0515-7
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发表时间：
2009-09-01
期刊：
影响因子：
3.5
通讯作者：
Galzin, R.
中科院分区：
文献类型：
--
作者：
Adjeroud, M.;Michonneau, F.;Galzin, R.
珊瑚礁日益受到各种干扰的威胁，一个关键的挑战是确定它们的抵抗和复原能力。法属波利尼西亚莫雷阿岛的珊瑚群受到多重干扰的影响（1991年至2006年期间发生了一次气旋和四次漂白事件）。1991年的干扰导致珊瑚覆盖率大幅下降（从51%下降到22%），随后被草坪藻类殖民化（从16%下降到49%），但这种从珊瑚到藻类占主导地位的阶段性转变并没有持续下去。相反，珊瑚群落的组成发生了变化，特别是有利于增加覆盖的滨珊瑚，减少覆盖的Montipora和Pocillopora，并完全返回鹿角珊瑚;在这种形式下，珊瑚礁恢复到干扰前的珊瑚覆盖在十年内。因此，这个珊瑚组合的特点是弹性的珊瑚覆盖，但可塑性的社区组成。
Coral reefs are increasingly threatened by various disturbances, and a critical challenge is to determine their ability for resistance and resilience. Coral assemblages in Moorea, French Polynesia, have been impacted by multiple disturbances (one cyclone and four bleaching events between 1991 and 2006). The 1991 disturbances caused large declines in coral cover (similar to 51% to similar to 22%), and subsequent colonization by turf algae (similar to 16% to similar to 49%), but this phase-shift from coral to algal dominance has not persisted. Instead, the composition of the coral community changed following the disturbances, notably favoring an increased cover of Porites, reduced cover of Montipora and Pocillopora, and a full return of Acropora; in this form, the reef returned to pre-disturbance coral cover within a decade. Thus, this coral assemblage is characterized by resilience in terms of coral cover, but plasticity in terms of community composition.