南海北部冷泉区深水珊瑚的发现及其特征

doi:10.11978/2017022

Abstract

Abstract:

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.

Key words: deep-water corals, hydrocarbon seepage, C-O isotope, bottom current, northern South China Sea

CLC Number:

P736.2

Zhong CHEN, Aibin MO, Meixia ZHAO, Yi ZHONG, Wen YAN. The discovery of deep-water corals from cold seep area in the northern South China Sea and their characteristics[J].Journal of Tropical Oceanography, 2018, 37(1): 64-71.

Figures/Tables 4

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The discovery of deep-water corals from cold seep area in the northern South China Sea and their characteristics

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