Applying a unified framework to compare taxonomic, functional and phylogenetic diversity in Holocene pollen records

作者：Amelia Penny, Anne Chao, Althea L. Davies, Anne E. Magurran · 发表于：Journal of Ecology · 年份：2025 · DOI：10.1111/1365-2745.70093 · 被引用次数：4 · 研究领域：Geology and Paleoclimatology Research、Ecology and Vegetation Dynamics Studies、Peatlands and Wetlands Ecology

Abstract Biodiversity is multifaceted, encompassing taxonomic, phylogenetic and functional dimensions of biological variation. Long‐term studies which compare these dimensions across a range of environments elucidate ecosystem dynamics and responses to environmental change. A recently developed quantitative framework allows measurement of taxonomic, phylogenetic and functional diversity in equivalent, abundance‐sensitive units, so that these three dimensions of diversity can be directly compared. This framework has been implemented for both alpha diversity (iNEXT.3D) and beta diversity (iNEXT.Beta3D). We adapt this framework for application to pollen records, a major source of data on long‐term ecological change. To the best of our knowledge, this is the first application of the new framework to pollen records. We used the framework to compare dimensions of diversity during shifts in woodland extent and composition in northern Scotland, focusing on two sites with contrasting climatic and vegetation histories. These records capture responses to c . 8000 years of climatic and land‐use change. We found that despite persistent woodland cover, the less exposed site exhibits large variations in taxonomic, phylogenetic and functional diversity and composition, including a decline across all dimensions of diversity since 1200 cal year BP. Since around 7500 cal year BP, the exposed site shows more stable biodiversity across all three dimensions. We attribute these differing dynamics t...