Widespread Biological Response to Rapid Warming on the Antarctic Peninsula

Current Biology : CB
Matthew J AmesburyDan J Charman

Abstract

Recent climate change on the Antarctic Peninsula is well documented [1-5], with warming, alongside increases in precipitation, wind strength, and melt season length [1, 6, 7], driving environmental change [8, 9]. However, meteorological records mostly began in the 1950s, and paleoenvironmental datasets that provide a longer-term context to recent climate change are limited in number and often from single sites [7] and/or discontinuous in time [10, 11]. Here we use moss bank cores from a 600-km transect from Green Island (65.3°S) to Elephant Island (61.1°S) as paleoclimate archives sensitive to regional temperature change, moderated by water availability and surface microclimate [12, 13]. Mosses grow slowly, but cold temperatures minimize decomposition, facilitating multi-proxy analysis of preserved peat [14]. Carbon isotope discrimination (Δ13C) in cellulose indicates the favorability of conditions for photosynthesis [15]. Testate amoebae are representative heterotrophs in peatlands [16-18], so their populations are an indicator of microbial productivity [14]. Moss growth and mass accumulation rates represent the balance between growth and decomposition [19]. Analyzing these proxies in five cores at three sites over 150 years r...Continue Reading

Citations

Oct 20, 2017·Nature Ecology & Evolution·Dana M Bergstrom
Feb 28, 2019·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Janet F BornmanStephan D Flint
May 21, 2020·Nature Communications·Andrew GrayMatthew P Davey
Feb 7, 2018·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·A F BaisA M Heikkilä
Dec 13, 2019·Royal Society Open Science·Hannah M PratherSarah M Eppley
Apr 19, 2018·Proceedings of the National Academy of Sciences of the United States of America·Paul J MorrisKaren L Bacon
Jul 5, 2018·Virus Genes·Adele CraneArvind Varsani
Nov 3, 2020·The Science of the Total Environment·Jorge DuránAsunción De Los Ríos
Jan 29, 2021·The Science of the Total Environment·J DuránA De Los Ríos
Dec 24, 2020·Biological Reviews of the Cambridge Philosophical Society·Julian GuttDiana H Wall

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