Recent planktonic foraminifers and their relationships to surface ocean hydrography of the South China Sea
Recent planktonic foraminifers and their relationships to surface ocean hydrography of the South China Sea
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DOI：
10.1016/s0025-3227(97)00127-8
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发表时间：
1998-04
期刊：
影响因子：
2.9
通讯作者：
Min‐Te Chen;Hong-Wen Ho;Tzong-Der Lai;Lianfu Zheng;Q. Miao;K. Shea;Min-Pen Chen;Pinxian Wang
中科院分区：
文献类型：
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作者：
Min‐Te Chen;Hong-Wen Ho;Tzong-Der Lai;Lianfu Zheng;Q. Miao;K. Shea;Min-Pen Chen;Pinxian Wang
来自海底表层沉积物的现代浮游有孔虫的相对丰度揭示了与海洋表面水文变量的关系。为了探讨海洋上层环境的垂直结构对浮游有孔虫丰度变化的影响，收集了173个南海表层沉积物的核心顶动物资料，并与直接观测的海表温度（SST）和温跃层深度（DOT）进行了比较。本研究所用的核顶分布在25°N，105°-125 ° E范围内，水深范围为68 - 3990 m。利用简单的相关分析，研究了浮游有孔虫物种丰度与水文变量之间的关系。在分析中，确定了四组具有不同生态偏好的浮游有孔虫：第一组-主要依赖DOT的动物群，具有正相关性（N。Dutertrei），第II类动物群与SST呈负相关，与DOT呈正相关（G. P. acetyloculata和G.Ⅲ类为依赖SST和DOT的动物群，与SST呈正相关，与DOT呈负相关（包括G. sacculifer，囊囊藻G. menardii，和G. aequilateralis）和第IV类-依赖SST和DOT的动物群，具有正相关性（G. ruber）。虽然这些物种显示出选择性的生态控制，这些结果表明，在南海，浮游有孔虫和SST或DOT的区系丰度之间的相关性是同样显着的。这项研究还表明，有必要在更大的区域范围内重新评价海洋上层浮游有孔虫丰度与许多其他重要水文变量之间的关系。
The relative abundances of Recent planktonic foraminifers from surface sediments on the sea floor reveal relationships to hydrographic variables of the ocean surface. To investigate whether the effect of the vertical structure of oceanic upper-layer environments is important to the changes in the abundance of planktonic foraminifers, a set of 173 coretop faunal data from modern South China Sea (SCS) surface sediments was compiled for comparison with direct observations of sea-surface temperature (SST) and the depth of thermocline (DOT). The coretops used in this study are distributed within the area of 25°N and 105°–125°E, with water depths ranging from 68 to 3990 m. The relationships between the abundances of planktonic foraminifer species and hydrographic variables were examined using simple correlation analyses. In the analyses, four groups of planktonic foraminifers with different ecological preferences were identified: Group I – faunas primarily reliant on DOT, with positive correlations (N. dutertrei), Group II – faunas reliant on both SST and DOT, showing negative correlations with SST and positive correlations with DOT (G. glutinata, P. obliquiloculata, and G. bulloides, Group III – faunas reliant on both SST and DOT, showing positive correlations with SST and negative correlations with DOT (including G. sacculifer, G. menardii, and G. aequilateralis), and Group IV – faunas reliant on both SST and DOT, with positive correlations (G. ruber). Though each of these species displays selectivity of ecological controls, these results indicate that in the SCS, correlations between faunal abundances of planktonic foraminifers and SST or DOT are about equally significant. This study also indicates a need for re-evaluating the relationships between planktonic foraminifer abundances and many other important hydrographic variables in the upper-layer of oceans on a more regional scale.