Chemical and mechanical bioerosion of boring sponges from Mexican Pacific coral reefs
Chemical and mechanical bioerosion of boring sponges from Mexican Pacific coral reefs
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DOI：
10.1242/jeb.019216
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发表时间：
2008-09-01
影响因子：
2.8
通讯作者：
Luis Carballo, Jose
中科院分区：
文献类型：
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作者：
Nava, Hector;Luis Carballo, Jose
物种丰富度(S)和钻探海绵入侵Pocillopora spp活群体的频率(IF)。来自国家公园的伊莎贝尔岛(墨西哥，东太平洋)。共发现12种珊瑚群落，隶属于珊瑚亚属、珊瑚藻属、珊瑚珊瑚属、珊瑚珊瑚属和珊瑚珊瑚属，56%的珊瑚群落受到钻探海绵的入侵，其中蠕虫客户端1867的种类最多(30%)。1974年对鞭毛藻和黄果树的碳酸盐溶解速率和沉积物产量进行了定量测定。这两个物种的碳酸钙(CaCO3)溶解速率(分别为1.2+/-0.4和0.5+/-0.2公斤CaCO3 m(-2)年(-1年))和泥沙产量(3.3+/-0.6和4.6+/-0.5公斤CaCO3 m(-2)年(-1))相似，导致平均生物侵蚀速率为4.5+/-0.9和5.1+/-0.5公斤CaCO3 m(-2)年(-1年)，分别进行了分析。这些生物侵蚀率接近以前单位面积珊瑚钙化的记录，这表明海绵生物侵蚀本身就可以在被钻探海绵严重入侵的地区促进珊瑚礁吸积/破坏比率的失衡。鞭毛虫和黄毛藻的溶解物质比例(分别为27%和10.2%)证实了化学生物侵蚀在珊瑚礁海绵生物侵蚀和CaCO3循环中起着重要作用。
Species richness (S) and frequency of invasion (IF) by boring sponges on living colonies of Pocillopora spp. from National Park Isla Isabel (Mexico, East Pacific Ocean) are presented. Twelve species belonging to the genera Aka, Cliona, Pione, Thoosa and Spheciospongia were found, and 56% of coral colonies were invaded by boring sponges, with Cliona vermifera Hancock 1867 being the most abundant species (30%). Carbonate dissolution rate and sediment production were quantified for C. vermifera and Cliona flavifodina Rutzler 1974. Both species exhibited similar rates of calcium carbonate (CaCO3) dissolution (1.2 +/- 0.4 and 0.5 +/- 0.2kg CaCO3 m(-2) year(-1), respectively, mean +/- s.e.m.), and sediment production (3.3 +/- 0.6 and 4.6 +/- 0.5kg CaCO3 m(-2) year(-1)), resulting in mean bioerosion rates of 4.5 +/- 0.9 and 5.1 +/- 0.5kg CaCO3 m(-2) year(-1), respectively. These bioerosion rates are close to previous records of coral calcification per unit of area, suggesting that sponge bioerosion alone can promote disequilibrium in the reef accretion/destruction ratio in localities that are heavily invaded by boring sponges. The proportion of dissolved material by C. vermifera and C. flavifodina (27 and 10.2%, respectively) confirms that chemical bioerosion plays an important role in sponge bioerosion and in the CaCO3 cycle in coral reefs.