南海北部冷泉区深水珊瑚的发现及其特征
作者简介:陈忠(1970—), 男, 云南省石屏县人, 研究员, 主要从事海洋地质与资源环境研究。E-mail: chzhsouth@scsio.ac.cn
收稿日期: 2017-02-26
要求修回日期: 2017-05-10
网络出版日期: 2018-02-02
基金资助
国家自然科学基金面上项目(41376057、41676056)
The discovery of deep-water corals from cold seep area in the northern South China Sea and their characteristics
Received date: 2017-02-26
Request revised date: 2017-05-10
Online published: 2018-02-02
Supported by
National Natural Science Foundation (41376057, 41676056)
Copyright
冷水珊瑚也称为深水珊瑚, 在生物多样性、生态资源和科研价值等方面具有重要意义。文章对采自南海北部冷泉区的冷水珊瑚骨骼碎屑进行测定, 鉴定出冷水珊瑚2个种(Crispatotrochus sp.1和Crispatotrochus sp.2), 以及4个属[Balanophyllia (Balanophyllia)、Balanophyllia (Eupsammia)、Lochmaeotrochus和Enallopsammia]。测定的冷水珊瑚的δ13C为-7.36‰~-1.15‰, δ18O为-1.38‰~3.67‰, 与全球冷水珊瑚碳氧同位素组成相似, 但明显不同于南海暖水珊瑚、冷泉碳酸盐岩及低温热液成因碳酸盐岩的碳氧同位素组成。
陈忠 , 莫爱彬 , 赵美霞 , 仲义 , 颜文 . 南海北部冷泉区深水珊瑚的发现及其特征[J]. 热带海洋学报, 2018 , 37(1) : 64 -71 . DOI: 10.11978/2017022
Cold-water corals, also known as deep-water corals, are newly found ecological resources with high biological diversity and attract scientific research on environmental changes. In this study, we investigated cold-water corals retrieved from the cold seep area in the northern South China Sea. We identified two species (Crispatotrochus sp.1, Crispatotrochus sp.2) and four genera [Balanophyllia (Balanophyllia), Balanophyllia (Eupsammia), Lochmaeotrochus, and Enallopsammia]. Stable carbon and oxygen isotopic analyses revealed that the δ13C and δ18O of cold-water corals were -7.36‰ ~ -1.15‰ and -1.38‰ ~ 3.67‰, respectively. The δ13C and δ18O results were close to the carbon and oxygen isotopic values of cold-water corals in other parts of the world, but were quite different from those of warm-water corals, cold-seep carbonate rocks and low-temperature hydrothermal carbonate rocks. This research discovered cold-water corals in a cold seep region of the northern South China Sea. This discovery is important for the studies on environmental effects of deep-water currents and of cold springs in the region.
Fig. 1 The distribution of deep-water corals found in the northern South China Sea图1 冷水珊瑚站位(a)及其位置(b)和地质环境(c)图 |
Fig. 2 Morphology of cold-water corals found图2 冷水珊瑚样品外部形貌图 |
Fig. 3 Scanning Electron Microscopeimages showing the internal structures of cold-water corals found图 3 冷水珊瑚内部结构扫描电子显微镜图 |
Fig. 4 Comparison of the carbon and oxygen isotope compositions of cold-water corals, coral reefs from northern South China Sea and worldwide图 4 南海北部珊瑚、珊瑚礁及全球冷水珊瑚的碳氧同位素组成 |
The authors have declared that no competing interests exist.
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