Relationships between climate and phylogenetic community structure of fossil pollen assemblages are not constant during the last deglaciation.

ABSTRACT: Disentangling the influence of environmental drivers on community assembly is important to understand how multiple processes influence biodiversity patterns and can inform understanding of ecological responses to climate change. Phylogenetic Community Structure (PCS) is increasingly used in community assembly studies to incorporate evolutionary perspectives and as a proxy for trait (dis)similarity within communities. Studies often assume a stationary relationship between PCS and climate, though few studies have tested this assumption over long time periods with concurrent community data. We estimated two PCS metrics-Nearest Taxon Index (NTI) and Net Relatedness index (NRI)-of fossil pollen assemblages of Angiosperms in eastern North America over the last 21 ka BP at 1 ka intervals. We anal

SUBMITTER: Pradhan K 

PROVIDER: S-EPMC8266067 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature