Drought impact on forest carbon dynamics and fluxes in Amazonia

Nature
Christopher DoughtyYadvinder Malhi

Abstract

In 2005 and 2010 the Amazon basin experienced two strong droughts, driven by shifts in the tropical hydrological regime possibly associated with global climate change, as predicted by some global models. Tree mortality increased after the 2005 drought, and regional atmospheric inversion modelling showed basin-wide decreases in CO2 uptake in 2010 compared with 2011 (ref. 5). But the response of tropical forest carbon cycling to these droughts is not fully understood and there has been no detailed multi-site investigation in situ. Here we use several years of data from a network of thirteen 1-ha forest plots spread throughout South America, where each component of net primary production (NPP), autotrophic respiration and heterotrophic respiration is measured separately, to develop a better mechanistic understanding of the impact of the 2010 drought on the Amazon forest. We find that total NPP remained constant throughout the drought. However, towards the end of the drought, autotrophic respiration, especially in roots and stems, declined significantly compared with measurements in 2009 made in the absence of drought, with extended decreases in autotrophic respiration in the three driest plots. In the year after the drought, total...Continue Reading

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Citations

Feb 18, 2016·Nature·Alistair W R SeddonKathy J Willis
Jul 4, 2016·Journal of Environmental Sciences (China)·Xiaorong WeiXingchang Zhang
Aug 1, 2015·The New Phytologist·Maurits W VandegehuchteKathy Steppe
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Dec 29, 2016·PloS One·Valentine HerrmannKristina J Anderson-Teixeira
Jul 25, 2017·The Science of the Total Environment·Hua LinZexin Fan
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Aug 3, 2017·Conservation Biology : the Journal of the Society for Conservation Biology·Richard BodmerEmma Docherty
Feb 6, 2018·The New Phytologist·Lucy RowlandPatrick Meir
Dec 10, 2017·Nature Communications·Nathan G SwensonKeping Ma
May 4, 2018·Global Change Biology·Victor Alexandre Hardt Ferreira Dos SantosScott Reid Saleska
May 29, 2018·Global Change Biology·Delong LiShuangcheng Li
Jun 27, 2018·Annals of the New York Academy of Sciences·Diego G MirallesAdriaan J Teuling
Feb 17, 2018·The New Phytologist·Nate McDowellXiangtao Xu
Oct 22, 2017·Global Change Biology·Graeme T SwindlesOuti Lähteenoja
Sep 15, 2017·Global Change Biology·Sam MooreYadvinder Malhi
Jul 6, 2019·Global Change Biology·Kun Huang, Jianyang Xia
Oct 4, 2019·Global Change Biology·Alessio CollaltiIain Colin Prentice
Nov 2, 2019·Global Change Biology·Shilong PiaoStephen Sitch

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