COMBINE: a Coalesced Mammal Database of Intrinsic and extrinsic traits

COMBINE is a taxonomically integrated database of mammal traits obtained from published sources, in which we maximized trait number and coverage without compromising data quality. COMBINE contains information on 54 traits for 6,234 extant and recently extinct mammal species, including information on morphology, reproduction, diet, biogeography, life-habit, phenology, behavior, home range and density. Additionally, we calculated other relevant traits such as habitat and altitudinal breadths for all species and dispersal for terrestrial non-volant species. All data are compatible with the taxonomies of the IUCN Red List v. 2020-2 and PHYLACINE v. 1.2. Missing data were adequately flagged and imputed for non-biogeographical traits with 20% or more data available. We obtained full data sets for 21 traits such as female maturity, litter size, maximum longevity, trophic level and dispersal, providing imputation performance statistics for all. This data set will be especially useful for those interested in including species’ traits in large-scale ecological and conservation analyses.

COMBINE是一款基于已发表文献构建的分类学整合型哺乳动物性状数据库，在构建过程中我们在不牺牲数据质量的前提下最大化了性状收录数量与覆盖范围。该数据库涵盖6234种现生及新近灭绝哺乳动物的54项性状信息，涉及形态学、繁殖特性、食性、生物地理学、生活习性、物候学、行为模式、家域面积与种群密度等多个维度。此外，我们还为所有物种计算了栖息地幅宽与海拔幅宽等衍生性状，并为陆生非飞行类物种补充了扩散能力相关数据。所有数据均兼容国际自然保护联盟（IUCN）红色名录v.2020-2与PHYLACINE v.1.2的分类学体系。对于可用数据占比不低于20%的非生物地理学性状，我们已对缺失值进行了规范标记与合理插补处理。我们为雌性成熟年龄、胎仔数、最大寿命、营养级与扩散能力等21项性状获取了完整实测数据集，并为所有插补流程提供了性能统计指标。本数据集对于希望将物种性状纳入大规模生态学与保护生物学分析的科研人员而言具有极高的应用价值。