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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Benthic recovery four years after an El Nino-induced coral mass mortality in the Lakshadweep atolls.
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Benthic recovery four years after an El Nino-induced coral mass mortality in the Lakshadweep atolls.

机译：厄尔尼诺现象造成的Lakshadweep环礁珊瑚死亡后四年，底栖生物恢复。

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摘要

The reefs of the Lakshadweep suffered a mass mortality of coral in 1998, in the wake of an El Nino event of unprecedented severity. In 2002, we conducted a broadscale benthic survey of six atolls in this group to check if there were geographic trends in recovery patterns across the archipelago. Four years after the mass mortality, live coral cover was relatively low on most atolls, and thin algal turfs dominated the benthos. Clear benthic differences were apparent between eastern and western aspects of reefs, pointing to the importance of local hydrodynamic conditions in determining recovery rates. Where recovery was the most apparent, it was dominated by fast-growing and bleaching-resistant coral genera. Despite the apparent lack of recovery at many sites, the reef system did not show signs of having suffered a phase shift' to a macroalgal state. High herbivorous fish abundance was likely responsible in controlling macrophyte levels, and may be crucial for further benthic recovery in these reefs.
机译：1998年，由于发生了前所未有的严重的厄尔尼诺事件，Lakshadweep的珊瑚礁遭受了珊瑚的大规模杀伤。 2002年，我们对该组中的六个环礁进行了大规模底栖调查，以检查整个群岛的恢复模式是否存在地理趋势。大规模死亡后的四年，大多数环礁上的活珊瑚覆盖率相对较低，而稀薄的草皮主导了底栖生物。东西方礁石之间明显的底栖差异明显，表明当地水动力条件对确定恢复率的重要性。恢复最明显的地方是快速增长和抗漂白的珊瑚属。尽管在许多地点显然缺乏恢复，但礁石系统并未显示出已发生向大型藻类相移的迹象。高草食性鱼类的丰度可能是控制大型植物水平的原因，对于这些珊瑚礁底栖生物的进一步恢复可能至关重要。

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