Understanding ship-grounding impacts on a coral reef: potential effects of anti-foulant paint contamination on coral recruitment
Understanding ship-grounding impacts on a coral reef: potential effects of anti-foulant paint contamination on coral recruitment
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DOI：
10.1016/s0025-326x(01)00128-x
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发表时间：
2002-02-01
影响因子：
5.8
通讯作者：
Heyward, AJ
中科院分区：
文献类型：
--
作者：
Negri, AP;Smith, LD;Heyward, AJ
这艘184米长的货船Bunga Teratai Satu与大堡礁的一部分萨德伯里礁相撞，并搁浅了12天。在2000年11月大规模珊瑚产卵前3天，这艘船被重新浮上水面。虽然没有货物或燃料损失，但由于含有三丁基锡（TBT）、铜（Cu）和锌（Zn）的防污漆的影响，珊瑚礁受到了严重污染。在重复的实验室实验中，造礁硬核珊瑚（Acropora microphthalma）的幼虫暴露于从搁浅地点收集的不同浓度的沉积物中。进行了两项实验，均采用不同比例的海水污染和对照场地沉积物作为处理。在第一个实验中，使用变态生物测定法检测了污染沉积物对幼虫能力的影响。其次，评估了污染沉积物对预处理陶瓦上幼虫招募的影响。在这两个试验中，含有8.0 mg kg(-1) TBT、72 mg kg(-1) Cu和92 mg kg(-1) Zn的沉积物显著抑制了幼虫的沉降和变态。在这种污染水平下，幼虫存活下来，但收缩成球形，游泳和搜寻行为停止。在较高的污染水平下，死亡率达到100%。这些结果表明，萨德伯里礁防污涂料对沉积物的污染有可能显著减少该地点附近珊瑚的繁殖，除非去除涂料，否则这种污染可能威胁到居住珊瑚群落的恢复。(C) 2002 Elsevier Science Ltd.版权所有。
The 184 m cargo ship Bunga Teratai Satu collided with Sudbury Reef, part of the Great Barrier Reef and remained grounded for 12 days. The ship was re-floated only 3 days prior to the November 2000 mass coral spawning. No cargo or fuel was lost but the impact resulted in significant contamination of the reef with anti-foulant paint containing tributyltin (TBT), copper (Cu) and zinc (Zn). Larvae of the reef-building scleractinian coral Acropora microphthalma were exposed to various concentrations of sediment collected from the grounding site in replicated laboratory experiments. Two experiments were performed, both of which used varying ratios of contaminated and control site sediment in seawater as treatments. In the first experiment, the influence of contaminated sediment on larval competency was examined using metamorphosis bioassays. In the second, the effect of contaminated sediment upon larval recruitment on pre-conditioned terracotta tiles was assessed. In both experiments, sediment containing 8.0 mg kg(-1) TBT, 72 mg kg(-1) Cu and 92 mg kg(-1) Zn significantly inhibited larval settlement and metamorphosis. At this level of contamination larvae survived but contracted to a spherical shape and swimming and searching behaviour ceased. At higher contamination levels, 100% mortality was recorded. These results indicate that the contamination of sediment by anti-fouling paint at Sudbury Reef has the potential to significantly reduce coral recruitment in the immediate vicinity of the site and that this contamination may threaten the recovery of the resident coral community unless the paint is removed. (C) 2002 Elsevier Science Ltd. All rights reserved.