珠江口外表层沉积物底栖有孔虫组合及其与环境的关系

doi:10.11978/j.issn.1009-5470.2011.04.051

Abstract

Abstract:

The authors selected 250 surface sediments from the sample stations at the CJ14 Block off the Pearl River Estuary to study benthic foraminifer. A total of 118 species were identified, including 80 species of hyaline shell, 21 species of porcelaneous shell, and 17 species of agglutinated shell. The abundance of foraminifer groups increased with water depth. In order to reveal the relationship between foraminifer distribution and marine environment, Q-mode factor analysis was carried out. The results showed that four varimax factors explained 86.2% of the total variance. Consequently, the varimax factors represented foraminifer community structure in the sediments. Our results suggest that water depth and salinity are controlling factors of foraminifer distribution in surface sediments of the Pearl River Estuary. Furthermore, sediment type, water dynamics, and sedimentary rate are influencing factors as well, and the latter two factors respectively affect the content and abundance of foraminifer groups in sediments.

Key words: Pearl River Estuary, surface sediment, benthic foraminifera, Q-mode factor analysis

LI Tao,XIANG Rong,LI Tuan-jie. Benthic foraminiferal assemblages in surface sediments off the Pearl River Estuary and their environmental implications[J].Journal of Tropical Oceanography, 2011, 30(4): 51-57.

References

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Benthic foraminiferal assemblages in surface sediments off the Pearl River Estuary and their environmental implications

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