@article{bfd61db597274abb9fdfcd7c8db3632b,
title = "Isoprene emission structures tropical tree biogeography and community assembly responses to climate",
abstract = "The prediction of vegetation responses to climate requires a knowledge of how climate-sensitive plant traits mediate not only the responses of individual plants, but also shifts in the species and functional compositions of whole communities. The emission of isoprene gas – a trait shared by one-third of tree species – is known to protect leaf biochemistry under climatic stress. Here, we test the hypothesis that isoprene emission shapes tree species compositions in tropical forests by enhancing the tolerance of emitting trees to heat and drought. Using forest inventory data, we estimated the proportional abundance of isoprene-emitting trees (pIE) at 103 lowland tropical sites. We also quantified the temporal composition shifts in three tropical forests – two natural and one artificial – subjected to either anomalous warming or drought. Across the landscape, pIE increased with site mean annual temperature, but decreased with dry season length. Through time, pIE strongly increased under high temperatures, and moderately increased following drought. Our analysis shows that isoprene emission is a key plant trait determining species responses to climate. For species adapted to seasonal dry periods, isoprene emission may tradeoff with alternative strategies, such as leaf deciduousness. Community selection for isoprene-emitting species is a potential mechanism for enhanced forest resilience to climatic change.",
keywords = "climate feedback, drought, plant functional traits, plant secondary metabolism, thermotolerance, tree physiology, tropical forest, volatile organic compounds",
author = "Taylor, {Tyeen C.} and McMahon, {Sean M.} and Smith, {Marielle N.} and Brad Boyle and Cyrille Violle and {van Haren}, Joost and Irena Simova and Patrick Meir and Ferreira, {Leandro V.} and {de Camargo}, {Plinio B.} and {da Costa}, {Antonio C.L.} and Enquist, {Brian J.} and Saleska, {Scott R.}",
note = "Funding Information: We thank K. Jardine for guidance in isoprene emission measurements at Biosphere 2, and R. K. Monson and three anonymous reviewers for constructive comments on the manuscript. Financial support for this study was provided to: T.C.T. and S.R.S. by grants NSF-PIRE #OISE-0730305, USDOE #3002937712, NASA #NNX17AF65G and the University of AZ Agnes Nelms Haury Program in Environment and Social Justice; to M.N.S. and S.R.S. by NASA-ESSF #NNX14AK95H; to C.V. by ERC-StG-2014-639706-CONSTRAINTS; to I.S. by Grant Agency of the Czech Republic #16-26369S; and to P.M. by NERC # NE/ N006852/1 and ARC #DP170104091. Funding Information: We thank K. Jardine for guidance in isoprene emission measurements at Biosphere 2, and R. K. Monson and three anonymous reviewers for constructive comments on the manuscript. Financial support for this study was provided to: T.C.T. and S.R.S. by grants NSF-PIRE #OISE-0730305, USDOE #3002937712, NASA #NNX17AF65G and the University of AZ Agnes Nelms Haury Program in Environment and Social Justice; to M.N.S. and S.R.S. by NASA-ESSF #NNX14AK95H; to C.V. by ERC-StG-2014-639706-CONSTRAINTS; to I.S. by Grant Agency of the Czech Republic #16-26369S; and to P.M. by NERC # NE/N006852/1 and ARC #DP170104091. Publisher Copyright: {\textcopyright} 2018 The Authors. New Phytologist {\textcopyright} 2018 New Phytologist Trust",
year = "2018",
month = oct,
doi = "10.1111/nph.15304",
language = "English (US)",
volume = "220",
pages = "435--446",
journal = "New Phytologist",
issn = "0028-646X",
publisher = "Wiley-Blackwell",
number = "2",
}