Coherent response of zoo‐ and phytoplankton assemblages to global warming since the Last Glacial Maximum

作者：Anne Strack, Lukas Jonkers, Marina C. Rillo, Karl‐Heinz Baumann, Helmut Hillebrand, Michal Kučera · 发表于：Global Ecology and Biogeography · 年份：2024 · DOI：10.1111/geb.13841 · 被引用次数：4 · 研究领域：Geology and Paleoclimatology Research、Isotope Analysis in Ecology、Species Distribution and Climate Change

Abstract Aim We are using the fossil record of different marine plankton groups to determine how their biodiversity has changed during past climate warming comparable to projected future warming. Location North Atlantic Ocean and adjacent seas. Time series cover a latitudinal range from 75° N to 6° S. Time period Past 24,000 years, from the Last Glacial Maximum (LGM) to the current warm period covering the last deglaciation. Major taxa studied Planktonic foraminifera, dinoflagellates and coccolithophores. Methods We analyse time series of fossil plankton communities using principal component analysis and generalized additive models to estimate the overall trend of temporal compositional change in each plankton group and to identify periods of significant change. We further analyse local biodiversity change by analysing species richness, species gains and losses, and the effective number of species in each sample, and compare alpha diversity to the LGM mean. Results All plankton groups show remarkably similar trends in the rates and spatio‐temporal dynamics of local biodiversity change and a pronounced non‐linearity with climate change in the current warm period. Assemblages of planktonic foraminifera and dinoflagellates started to change significantly with the onset of global warming around 15,500 to 17,000 years ago and continued to change at the same rate during the current warm period until at least 5000 years ago, while coccolithophore assemblages changed at a constant ra...