Max Planck Institute for Marine Microbiology, Celsiusstr. 1, 28359 Bremen, Germany.
Mar Pollut Bull. 2013 Sep 15;74(1):132-40. doi: 10.1016/j.marpolbul.2013.07.016. Epub 2013 Jul 31.
In laboratory experiments, the cold-water coral Lophelia pertusa was exposed to settling particles. The effects of reef sediment, petroleum drill cuttings and a mix of both, on the development of anoxia at the coral surface were studied using O2, pH and H2S microsensors and by assessing coral polyp mortality. Due to the branching morphology of L. pertusa and the release of coral mucus, accumulation rates of settling material on coral branches were low. Microsensors detected H2S production in only a few samples, and sulfate reduction rates of natural reef sediment slurries were low (<0.3 nmol S cm(-3) d(-1)). While the exposure to sediment clearly reduced the coral's accessibility to oxygen, L. pertusa tolerated both partial low-oxygen and anoxic conditions without any visible detrimental short-term effect, such as tissue damage or death. However, complete burial of coral branches for >24 h in reef sediment resulted in suffocation.
在实验室实验中，冷水珊瑚 Lophelia pertusa 暴露在沉降颗粒中。使用 O2、pH 和 H2S 微传感器，并通过评估珊瑚息肉死亡率，研究了珊瑚沉积物、石油钻屑和两者混合物对珊瑚表面缺氧发展的影响。由于 L. pertusa 的分支形态和珊瑚黏液的释放，沉降物质在珊瑚分枝上的积累速率较低。微传感器仅在少数样本中检测到 H2S 的产生，并且天然珊瑚沉积物泥浆的硫酸盐还原速率较低（<0.3 nmol S cm(-3) d(-1)）。虽然暴露于沉积物明显降低了珊瑚对氧气的可及性，但 L. pertusa 在没有任何可见短期损害的情况下耐受部分低氧和缺氧条件，例如组织损伤或死亡。然而，珊瑚分枝在珊瑚沉积物中完全掩埋超过 24 小时会导致窒息。
