2026-10-13T12:20:46Z https://www.scidb.cn/oai

10.57760/sciencedb.29775 2026-05-06T09:16:56Z

2026-05-06 Human pressures drive compositional homogenization and functional shifts in Southeast Asian mammal communities doi:10.57760/sciencedb.29775 en Data and code used in Global Change Biology paper "Human pressures drive compositional homogenization and functional shifts in Southeast Asian mammal communities". Here, we compiled an extensive camera-trapping dataset of medium and large-sized mammals from 3,509 sites across tropical and temperate forests in Southeast Asia. We quantified compositional homogenization and functional diversity trait patterns in relation to human pressures within and across forests. Env.csv: Basic information and standardized environmental covariates of each study area. "Area": ID of study areas; "Lon": Lontitude; "Lat": Latitude; "n_Cameras:" the number of camera sites; "Effort": trapping effort; "PD": patch density; "HM": human modification index; "BC": building density change; "RAIH": relative abundance index of human; "RAIL": relative abundance index of livestock; "Alt": altitude; "Rough": terrain roughness; "Bio14": precipitation of driest month; "NPP": net primary productivity; "TC": tree-cover change; "Biome": biome of the study area; "Reference": data source.Comm.csv: Number of independent observation events of each species within each study area.Traits.csv: Functional traits of each species. "Scientific": Latin names of species; "BodyMass.Value": body mass; "Diet": consumption proportion of food resources; "ForStrat.Value": foraging stratum; "Activity": circadian rhythms; "litter_size": litter size; "habitat_breadth_n": number of habitat types.R version 4.4.2 were used to calculate the log-response ratio of homogeneity (LRR homogeneity), log-response ratio of shift (LRR shift), as well as functional diversity metrics and to produce Figure 2-5 in the manuscript.Abstract: Human activities strongly alter wildlife distributions and behaviors, rapidly reshaping their community structure. Although links between human pressures and community assembly have been explored, practical integration of multiple biodiversity indicators, especially compositional homogenization and functional trait patterns, remains limited. We addressed this gap by jointly assessing the compositional and functional responses of mammal communities to human pressures across Southeast Asia. We compiled an extensive camera-trapping dataset from 4,508 sites spanning > 38° of latitude across tropical and temperate forests in Southeast Asia. We quantified compositional homogenization and functional diversity trait patterns in relation to human pressures within and across forests. Our results show that community assembly is broadly affected by human pressures, with communities in Tropical & Subtropical Moist Broadleaf Forests (TSMBF) exhibiting greater vulnerability than those in Temperate Coniferous Forests (TCF), as evidenced by pronounced compositional homogenization and distinct changes in functional traits. High-intensity human modification promoted compositional homogenization alongside functional trait divergence, while long-term changes in building density drove functional trait convergence. This study demonstrates that integrating compositional and functional indicators provides a more holistic understanding of anthropogenic impacts on biodiversity. The heightened vulnerability of tropical mammal communities underscores the urgent need for targeted conservation strategies in these regions to curb the replacement of endemic specialists with widespread generalists. camera trapping; compositional homogenization; functional patterns; human impacts Yang Liu Kenneth Otieno Onditi Wenqiang Hu Xuelong Jiang Xueyou Li PUBLIC https://creativecommons.org/licenses/by-nc/4.0/ dataset http://www.doi.org/10.1111/gcb.70916 Science Data Bank