BRIDGE, School of Geographical Sciences, University of Bristol, Bristol, BS8 1HB, UK.
The Lyell Centre for Earth and Marine Science, Heriot-Watt University, Edinburgh, EH14 4BA, UK.
Sci Data. 2024 Aug 24;11(1):920. doi: 10.1038/s41597-024-03724-z.
Coccolithophores are marine calcifying phytoplankton important to the carbon cycle and a model organism for studying diversity. Here, we present CASCADE (Coccolithophore Abundance, Size, Carbon And Distribution Estimates), a new global dataset for 139 extant coccolithophore taxonomic units. CASCADE includes a trait database (size and cellular organic and inorganic carbon contents) and taxonomic-unit-specific global spatiotemporal distributions (Latitude/Longitude/Depth/Month/Year) of coccolithophore abundance and organic and inorganic carbon stocks. CASCADE covers all ocean basins over the upper 275 meters, spans the years 1964-2019 and includes 33,119 gridded taxonomic-unit-specific abundance observations. Within CASCADE, we characterise the underlying uncertainties due to measurement errors by propagating error estimates between the different studies. This error propagation pipeline is statistically robust and could be applied to other plankton groups. CASCADE can contribute to (observational or modelling) studies that focus on coccolithophore distribution and diversity and the impacts of anthropogenic pressures on historical populations. Additionally, our new taxonomic-unit-specific cellular carbon content estimates provide essential conversions to quantify the role of coccolithophores on ecosystem functioning and global biogeochemistry.
颗石藻是海洋钙化浮游植物，对碳循环很重要，也是研究多样性的模式生物。在这里，我们提出了 CASCADE（颗石藻丰度、大小、碳和分布估计），这是一个新的全球数据集，包含 139 种现存的颗石藻分类单元。CASCADE 包括一个特征数据库（大小和细胞有机碳和无机碳含量）以及分类单元特定的全球时空分布（纬度/经度/深度/月/年），包括颗石藻丰度以及有机碳和无机碳储量。CASCADE 涵盖了上层 275 米的所有海洋盆地，跨越了 1964 年至 2019 年，包括 33,119 个网格化分类单元特定丰度观测值。在 CASCADE 中，我们通过在不同研究之间传播误差估计来描述由于测量误差而导致的潜在不确定性。这个误差传播管道在统计学上是稳健的，可以应用于其他浮游生物群体。CASCADE 可以为关注颗石藻分布和多样性以及人为压力对历史种群影响的（观测或建模）研究做出贡献。此外，我们新的分类单元特定细胞碳含量估计提供了重要的转换，以量化颗石藻在生态系统功能和全球生物地球化学中的作用。
