Benthic foraminifera relative abundances from Western Equatorial Pacific Ocean ODP Site 130-807

Our dataset comprises the relative abundances of benthic foraminifera at Site 807, located in the Western Equatorial Pacific on the Ontong Java Plateau. We specifically selected two epibenthic foraminifera species, viz. Cibicides wuellerstorfi and Cibicides kullenbergi, for their census counts and their stable isotopes (~100-300 μg of cleaned benthic foraminiferal tests were used for stable isotope measurements). This investigation was undertaken to analyze deep water conditions at the studied site (Site 807) since the middle Miocene. Additionally, to examine the presence of Pacific Deep Water during this temporal span, we examined two other benthic foraminifera species, Favocassidulina favus and Pullenia bulloides. Uvigerina proboscidea was chosen to assess productivity. Furthermore, the cumulative abundance of Uvigerina peregrina and Globocassidulina subglobosa was calculated due to their suggested roles as proxies for Circumpolar Deep Water (CDW). For the assessment of deep water flow velocity, we calculated cumulative abundance of C. wuellerstorfi and G. subglobosa, as their presence has been associated with increased water flow velocity, indicative of their ability to thrive in high-energy environments and withstand strong bottom currents.本数据集涵盖位于翁通爪哇海台西赤道太平洋区域的807站位的底栖有孔虫相对丰度数据。本研究特意选取两种表生底栖有孔虫物种——希氏圆辐虫（Cibicides wuellerstorfi）与库氏圆辐虫（Cibicides kullenbergi），对其开展种群计数及稳定同位素分析（稳定同位素测量使用约100~300 μg清洗后的底栖有孔虫壳体）。本研究旨在分析807站位自中新世中期以来的深水环境状况。此外，为探究该地质时段内太平洋深层水的存在情况，本研究还选取了另外两种底栖有孔虫：黄优拟盔形有孔虫（Favocassidulina favus）与泡状突唇虫（Pullenia bulloides）。选取长鼻靴形虫（Uvigerina proboscidea）以表征海洋初级生产力水平。进一步地，鉴于远洋靴形虫（Uvigerina peregrina）与亚球拟盔形有孔虫（Globocassidulina subglobosa）被建议作为环极深层水（Circumpolar Deep Water, CDW）的替代指标，本研究计算了二者的累积丰度。为评估深水水流流速，本研究还计算了希氏圆辐虫（C. wuellerstorfi）与亚球拟盔形有孔虫（G. subglobosa）的累积丰度——因其出现与水流流速升高存在显著关联，这表明它们能够在高能环境中繁衍并耐受强底流。