期刊
GLOBAL CHANGE BIOLOGY
卷 24, 期 10, 页码 4827-4840出版社
WILEY
DOI: 10.1111/gcb.14375
关键词
climate change; disequilibrium; exclusion; functional diversity; functional trait; Holocene; immigration; lag; legacy; Pleistocene
资金
- Norwegian Research Council
- European Research Council
- Natural Environment Research Council
- National Science Foundation
- Carlsbergfondet
- Villum Fonden
- Czech Science Foundation
- Danmarks Grundforskningsfond
- Danish National Research Foundation
- University of California
- NERC [NE/M019160/1] Funding Source: UKRI
The functional composition of plant communities is commonly thought to be determined by contemporary climate. However, if rates of climate-driven immigration and/or exclusion of species are slow, then contemporary functional composition may be explained by paleoclimate as well as by contemporary climate. We tested this idea by coupling contemporary maps of plant functional trait composition across North and South America to paleoclimate means and temporal variation in temperature and precipitation from the Last Interglacial (120ka) to the present. Paleoclimate predictors strongly improved prediction of contemporary functional composition compared to contemporary climate predictors, with a stronger influence of temperature in North America (especially during periods of ice melting) and of precipitation in South America (across all times). Thus, climate from tens of thousands of years ago influences contemporary functional composition via slow assemblage dynamics.
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