Floras of predominantly wet-soil environments show a greater than expected proportion of toothed leaves, affecting the outcome of leaf physiognomically based temperature estimates. New analyses of foliar physiognomy of plants growing in predominantly wet soils in modern forests suggest that current methods of inferring paleotemperatures from fossil floras yield underestimates of 2.5-10 degrees C. The changes we propose bring terrestrial paleotemperature estimates into agreement with temperatures inferred from other biological and geological proxies and strengthen the use of leaf physiognomy as a method for climate reconstruction.
Proceedings of the National Academy of Sciences of the United States of America. 2003 Jan 7;100(1):167-70. doi: 10.1073/pnas.232693599 Q19.12025
Warmer paleotemperatures for terrestrial ecosystems
陆地生态系统的增温效应 翻译改进
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DOI: 10.1073/pnas.232693599 PMID: 12493844
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