Benthic foraminiferal faunas of Miocene to Holocene sediments of ODP Site 184-1143 from the southern South China Sea

Deep-sea benthic foraminiferal assemblages from Ocean Drilling Program (ODP) Site 1143 located in the southern South China Sea (SCS) were investigated to evaluate the relationship between faunal composition patterns and paleoceanographic changes during the last 6 million years (late Miocene to Holocene). We used multivariate statistics (correspondence analysis) to analyze carbon-flux-related changes in assemblage composition of benthic foraminifers. Additional proxies for carbon flux and deep-water ventilation include delta13C records of epifaunal Cibicidoides wuellerstorfi and infaunal Uvigerina peregrina var. dirupta and Melonis pompilioides, benthic foraminiferal accumulation rates (BFARs), diversity indices, and relative abundances of indicator species. We observe three significant benthic faunal changes in the southern South China Sea during the last 6 million years. […]

对中国南海南部（SCS）的ODP Site 1143站深海底部有孔虫群进行了研究，旨在评估过去六百万年（上新世晚期至全新世）期间，生物群落组成模式与古海洋学变化之间的关系。本研究采用多元统计分析（对应分析）对底层有孔虫群的碳通量相关组成变化进行了分析。碳通量的额外代理指标包括表生有孔虫Cibicidoides wuellerstorfi和底生有孔虫Uvigerina peregrina var. dirupta及Melonis pompilioides的δ13C记录、底层有孔虫累积率（BFARs）、多样性指数和指示物种的相对丰度。在过去的六百万年中，我们在南海南部观察到三种显著的底层生物群落变化。