Benthic foraminifera as proxy for fossil seagrass from the Lower Pleistocene deposits of the Stirone River (Emilia-Romagna, Italy) - Raw Data

This dataset contains the raw data resulting from the picking of benthic foraminifera within the Pleistocene deposits of the Stirone River (Emilia-Romagna, Italy). The aim of this project is to test foraminifera as Indirect Palaeo-Seagrass Indicators (IPSIs). Foraminiferal analyses, based on these data, focused on two different biofacies: a Thalassinoides biofacies, characterised by an oligotypic assemblage (samples R) and a Pinna biofacies, that shows high biodiversity and represents an infralittoral soft bottom colonised by marine phanerogams (samples S). Several indexes have been calculated using these data, such as the IndexEP, the modified FORAM index (FI’), the “long vs. short life-span index” (ILS), and the K/REXT (keeled/rounded morphotypes). Morphotype-based analysis has been provided, too. Among the tested indexes, the latter (K/REXT) proved to be the most reliable IPSI, considering also the presence of morphotype A*, permanently attached, encrusting foraminifera and the abundance of Rosalinidae.

本数据集收录了源自意大利艾米利亚-罗马涅地区斯提龙河（Stirone River）更新世沉积层中采集的底栖有孔虫的原始数据。该项目的目的是检验有孔虫作为间接古海草指示器（Indirect Palaeo-Seagrass Indicators, IPSIs）的可行性。基于这些数据的有孔虫分析集中于两种不同的生物群：一种以寡型组合为特征的Thalassinoides生物群（样本R）和一种表现出高生物多样性的Pinna生物群，后者代表了被海洋显花植物殖民的潮间带软底质（样本S）。利用这些数据计算了多个指数，例如IndexEP、改进的有孔虫指数（FI'）、“长寿命与短寿命指数”（ILS）以及K/REXT（有翼/圆形形态型）。同时，还提供了基于形态型的分析。在所测试的指数中，后者（K/REXT）鉴于形态型A*（永久附着、钙化的有孔虫）的存在以及Rosalinidae的丰度，证明是最可靠的IPSIs。