Population density is a fundamental parameter in ecology and conservation, and taxonomic and geographic patterns of population density have been an important focus of macroecological research. However, population density data are time-consuming and costly to collect, so their availability is limited. Leveraging decades of research, TetraDENSITY 1.0 was developed as a global repository containing over 18,000 population density estimates for > 2100 terrestrial vertebrate species, aiding researchers in investigating patterns of population density, its intrinsic and extrinsic drivers, and for developing predictive models. Here we present a substantially expanded version of the database, which now includes marine tetrapods and encompasses over 54,300 estimates for 3717 species associated with error estimates and geographical coordinates when available, hence enabling meta-analytical approaches and better spatial matching of estimates with environmental conditions.

中文翻译：

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TetraDENSITY 2.0 - 四足动物种群密度估计数据库


种群密度是生态学和保护的基本参数，种群密度的分类学和地理模式一直是宏观生态学研究的重要重点。但是，人口密度数据的收集非常耗时且成本高昂，因此其可用性有限。利用数十年的研究，TetraDENSITY 1.0 被开发为一个全球存储库，其中包含 > 2100 种陆生脊椎动物物种的 18,000 多个种群密度估计值，帮助研究人员研究种群密度模式、其内在和外在驱动因素，并开发预测模型。在这里，我们展示了该数据库的大幅扩展版本，该版本现在包括海洋四足动物，并包含对 3717 个物种的 54,300 多个估计值，这些估计值与误差估计值和地理坐标（如果有）相关，从而能够实现元分析方法和估计值与环境条件更好的空间匹配。