摘要
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δ^(13)C为–7.36‰~–1.15‰,δ^(18)O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。
Cold-water corals, also known as deep-water corals, are newly found ecological resources with high biologicaldiversity and attract scientific research on environmental changes. In this study, we investigated cold-water corals retrievedfrom 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]. Stablecarbon 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 inother parts of the world, but were quite different from those of warm-water corals, cold-seep carbonate rocks andlow-temperature hydrothermal carbonate rocks. This research discovered cold-water corals in a cold seep region of thenorthern South China Sea. This discovery is important for the studies on environmental effects of deep-water currents and ofcold springs in the region.
出处
《热带海洋学报》
CAS
CSCD
北大核心
2018年第1期64-71,共8页
Journal of Tropical Oceanography
基金
国家自然科学基金面上项目(41376057
41676056)~~
关键词
冷水珊瑚
冷泉渗漏
碳氧同位素
海底底流
南海北部
deep-water corals
hydrocarbon seepage
C-O isotope
bottom current
northern South China Sea
