Elements and Isotopes of cultured Serpulid (Spirorbis spirorbis) calcareous shells in Benthocosm System

S. spirorbis were cultured in a benthocosms facility for subsequent treatments: Ambient pCO2 (380 – 400 µatm) and temperature (‘Control’), 1100 µatm pCO2 (‘+CO2’) or +5°C temperature (‘+T’), and the combination of both elevated pCO2 and temperature (‘+CO2+T’). Each treatment has three replicates. After about 11 weeks of incubation for each seasonal experiment (spring, summer, autumn and winter experiments), we analyzed the bulk carbonate fraction of S. spirorbis samples, element ratios: Mg/Ca, Li/Ca, Sr/Ca, Ba/Ca, and Li/Mg, and stable isotopes: d13C, d18O, d44/40Ca in each treatment, included in this dataset. Water chemistry and element distribution coefficients are also included. Carbon and oxygen stable isotopes measured using bleached and unbleached samples are shown in this dataset.

本数据集的实验生物为螺旋虫（S. spirorbis），将其饲养于底栖围隔系统（benthocosms）中以开展后续梯度处理实验：设置对照组（Control）（环境二氧化碳分压380–400 µatm、温度为自然水平）、高CO₂组（+CO₂，pCO₂为1100 µatm）、升温组（+T，温度升高5℃）以及复合胁迫组（+CO₂+T，同时升高二氧化碳分压与温度），每组设置3个生物学重复。针对春、夏、秋、冬四季开展的独立实验，每个实验均经过约11周的培养后，我们对各组螺旋虫样本的整体碳酸盐组分进行了分析，检测指标包括元素比值（Mg/Ca、Li/Ca、Sr/Ca、Ba/Ca及Li/Mg）与稳定同位素比值（δ¹³C、δ¹⁸O、δ⁴⁴/⁴⁰Ca）。本数据集同时收录水体化学参数与元素分配系数数据，此外还包含经漂白与未漂白样本测得的碳、氧稳定同位素数据。