Influence of Introduced CO2 on Deep-Sea Metazoan Meiofauna
Influence of Introduced CO2 on Deep-Sea Metazoan Meiofauna
复制标题
引入二氧化碳对深海后生动物小型动物群的影响
DOI：
10.1007/s10872-004-5769-7
复制
发表时间：
2004
影响因子：
2.3
通讯作者：
J. Barry
中科院分区：
文献类型：
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作者：
K. Carman;D. Thistle;J. Fleeger;J. Barry
进行了一项实验，以确定注入CO2对蒙特雷峡谷深海（3200米）小型底栖动物群落的影响。将大约20 L的液态CO2添加到三个圆柱形Corpine（推入海底的PVC环）中的每一个中，所述圆柱形Corpine以三角形阵列排列在一侧10 m处。30天后，在暴露于CO2池产生的溶解羽流的区域内和大约40米外的参考地点收集沉积物芯;还从两个CO2库内收集芯。沉积物芯被切成0 - 5、5 - 10和10 - 20 mm的层。丰度的主要群体（harpacticoid桡足类，线虫，无节幼体，kinorhynchs，多毛类，和总的小型底栖动物）确定每一层。CO2暴露没有显着影响的丰度或垂直分布的任何主要类群。然而，其他证据表明，丰度本身并不能准确反映二氧化碳对小型底栖生物的影响。我们认为，缓慢的分解速率的小型底栖动物尸体可以掩盖CO2的不利影响，需要更长的实验和/或仔细检查的小型底栖动物的条件，以准确地评估CO2对深海小型底栖动物群落的影响。
An experiment was performed to determine the effect of injected CO2on the deep-sea (3200 m) meiofaunal community in the Monterey Canyon. Approximately 20 L of liquid CO2was added to each of three cylindrical corrals (PVC rings pushed into the seabed) that were arranged in a triangular array 10 m on a side. After a 30-day period, sediment cores were collected within an area exposed to the dissolution plume emanating from the CO2pools and from a reference site approximately 40 m away; cores were also collected from within two of the CO2corrals. Sediment cores were sectioned into 0–5, 5–10, and 10–20 mm layers. Abundances of major groups (harpacticoid copepods, nematodes, nauplii, kinorhynchs, polychaetes, and total meiofauna) were determined for each layer. CO2exposure did not significantly influence the abundances or vertical distributions of any of the major taxa. However, other evidence suggests that abundance alone did not accurately reflect the effect of CO2on meiofauna. We argue that slow decomposition rates of meiofaunal carcasses can mask adverse effects of CO2and that longer experiments and/or careful examination of meiofaunal condition are needed to accurately evaluate CO2effects on deep-sea meiofaunal communities.