Substrate Destruction and Sediment Production by the Boring Sponge Cliona Caribbaea on Grand Cayman Island
Substrate Destruction and Sediment Production by the Boring Sponge Cliona Caribbaea on Grand Cayman Island
复制标题
大开曼岛钻孔海绵 Cliona Caribbaea 对基质的破坏和沉积物的产生
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
M. Risk
中科院分区：
文献类型：
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作者：
K. Acker;M. Risk
摘要 无聊的海绵 Cliona caribbaea 在英属西印度群岛大开曼岛周围的浅层阶地上随处可见，以棕色片状覆盖并生长在活珊瑚和硬质基质上。在大开曼岛西南角的整个径向凹槽区域，C. caribbaea 覆盖了 -1 至 -10 m 之间总底部面积的 5%。通常出现高达 10% 的值。横向延伸率为 4 厘米/年。海绵平均去除 20%（最多 45%）的基材，基材的平均比重为 1.7。对典型基质去除速率的保守估计为 8 千克/平方米/年，该值约为珊瑚礁钙化典型速率的两倍。海绵产生的淤泥迅速向下输送。
ABSTRACT The boring sponge Cliona caribbaea is ubiquitous on the shallow terraces around Grand Cayman Island, British West Indies, occurring as brown sheets covering and growing over both live corals and hard substrate. Throughout the zone of the radial grooves, on the southwest corner of Grand Cayman, C. caribbaea covered 5% of the total bottom area between -1 and -10 m. Values up to 10% occurred commonly. Lateral extension rates were 4 cm/yr. The sponge removes an average of 20% (up to 45%) of the substrate, which has an average specific gravity of 1.7. Conservative estimation of typical rates of substrate removal yields 8 kg/m2/yr, a value of about double the typical rates of reef calcification. The silt produced by the sponge is rapidly transported downslope.