Predator crown-of-thorns starfish (Acanthaster planci) outbreak, mass mortality of corals, and cascading effects on reef fish and benthic communities.
Predator crown-of-thorns starfish (Acanthaster planci) outbreak, mass mortality of corals, and cascading effects on reef fish and benthic communities.
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DOI：
10.1371/journal.pone.0047363
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Adjeroud M
中科院分区：
文献类型：
--
作者：
Kayal M;Vercelloni J;Lison de Loma T;Bosserelle P;Chancerelle Y;Geoffroy S;Stievenart C;Michonneau F;Penin L;Planes S;Adjeroud M
杀死珊瑚的海滨棘尾藻的爆发是一种强烈的干扰，可以摧毁珊瑚礁。这些事件包括大量捕食性海星的出现，它们以造礁珊瑚为食，往往导致珊瑚种群的大范围破坏。虽然印度-太平洋的许多热带珊瑚礁都报告了这种爆发的周期性发生，但其原因引起了激烈的辩论，而且爆发的时空动态和对珊瑚礁群落的影响仍然不清楚。根据对法属波利尼西亚莫雷亚岛附近最近发生的一次事件的观察，我们发现棘棘鸟的爆发是有方法的、缓慢的和扩散性的生物扰动。在像Moorea这样的岛礁系统上爆发的棘鱼似乎起源于局限于暴露在海洋中的珊瑚礁基地的限制区域。棘鱼密度的增加随后通过海星的聚集波迁移逐渐扩散到邻近和较浅的位置，最终影响整个珊瑚礁系统。珊瑚礁之间的定向迁徙似乎是为了寻找猎物，因为受密集海滨聚集物影响的珊瑚礁部分很快就会耗尽活珊瑚，随后就会被遗弃。珊瑚在受影响的珊瑚礁上的衰退是通过按棘鱼取食偏好的顺序顺序消耗物种而发生的。因此，棘鱼的暴发导致珊瑚群落结构的可预见的变化。我们在这里报告的疫情是有史以来最严重和最具破坏性的疫情之一。我们还使用分层、多尺度的方法，展示了固着底栖生物群落和以珊瑚为食的鱼类群落随后如何受到珊瑚数量下降的影响。通过阐明棘鱼暴发的过程，我们的研究有助于理解这种广泛的干扰，因此应该有助于对珊瑚礁生态系统采取有针对性的管理行动。
Outbreaks of the coral-killing seastar Acanthaster planci are intense disturbances that can decimate coral reefs. These events consist of the emergence of large swarms of the predatory seastar that feed on reef-building corals, often leading to widespread devastation of coral populations. While cyclic occurrences of such outbreaks are reported from many tropical reefs throughout the Indo-Pacific, their causes are hotly debated, and the spatio-temporal dynamics of the outbreaks and impacts to reef communities remain unclear. Based on observations of a recent event around the island of Moorea, French Polynesia, we show that Acanthaster outbreaks are methodic, slow-paced, and diffusive biological disturbances. Acanthaster outbreaks on insular reef systems like Moorea's appear to originate from restricted areas confined to the ocean-exposed base of reefs. Elevated Acanthaster densities then progressively spread to adjacent and shallower locations by migrations of seastars in aggregative waves that eventually affect the entire reef system. The directional migration across reefs appears to be a search for prey as reef portions affected by dense seastar aggregations are rapidly depleted of living corals and subsequently left behind. Coral decline on impacted reefs occurs by the sequential consumption of species in the order of Acanthaster feeding preferences. Acanthaster outbreaks thus result in predictable alteration of the coral community structure. The outbreak we report here is among the most intense and devastating ever reported. Using a hierarchical, multi-scale approach, we also show how sessile benthic communities and resident coral-feeding fish assemblages were subsequently affected by the decline of corals. By elucidating the processes involved in an Acanthaster outbreak, our study contributes to comprehending this widespread disturbance and should thus benefit targeted management actions for coral reef ecosystems.
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DOI：
10.1016/s0022-0981(97)00100-7
发表时间：
1998-01-31
影响因子：
2
作者：
De'ath, G;Moran, PJ
通讯作者：
Moran, PJ
影响因子：
2.5
作者：
JOHNSON, CR;SUTTON, DC;GIDDINS, R
通讯作者：
GIDDINS, R
影响因子：
2.3
作者：
Houk, Peter;Raubani, Jason
通讯作者：
Raubani, Jason
影响因子：
4.9
作者：
Magalon, H;Adjeroud, M;Veuille, M
通讯作者：
Veuille, M
DOI：
10.1016/s0022-0981(97)00085-3
发表时间：
1998-01-31
影响因子：
2
作者：
De'ath, G;Moran, PJ
通讯作者：
Moran, PJ