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New Phytol

Title:		Isoprene emission structures tropical tree biogeography and community assembly responses to climate
Author(s):		Taylor TC; McMahon SM; Smith MN; Boyle B; Violle C; van Haren J; Simova I; Meir P; Ferreira LV; de Camargo PB; da Costa ACL; Enquist BJ; Saleska SR;
Address:		"Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, 85721, USA. Center for Tropical Forest Science-Forest Global Earth Observatory, Smithsonian Environmental Research Center, Edgewater, MD, 21307, USA. Hardner & Gullison Associates, LLC, 15 Woodland Drive, Amherst, NH, 03031, USA. Centre d'Ecologie Fonctionnelle et Evolutive (UMR 5175), CNRS - Universite de Montpellier - Universite Paul Valery Montpellier, EPHE, Montpellier, France. Biosphere 2, University of Arizona, 32540 S. Biosphere Road, Oracle, AZ, 85623, USA. Center for Theoretical Study, Charles University, Praha, 11636, Czech Republic. Department of Ecology, Faculty of Science, Charles University, 12844, Praha, Czech Republic. Research School of Biology, Australian National University, Canberra, ACT, 2601, Australia. School of Geosciences, University of Edinburgh, Edinburgh, EH8 9XP, UK. Coordenacao de Botanica, Museu Paraense Emilio Goeldi, 66040-170, Belem, PA, Brazil. Laboratorio de Ecologia Isotopica, Centro de Energia Nuclear na Agricultura (CENA), Universidade de Sao Paulo, 13400-970, Piracicaba, Sao Paulo, Brazil. Centro de Geociencias, Universidade Federal do Para, 66017-970, Belem, PA, Brazil. The Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM, 87501, USA"
Journal Title:		New Phytol
Year:		2018
Volume:		20180704
Issue:		2
Page Number:		435 - 446
DOI:		10.1111/nph.15304
ISSN/ISBN:		1469-8137 (Electronic) 0028-646X (Linking)
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:		Butadienes/*analysis *Climate Change Forests Hemiterpenes/*analysis *Phylogeny Time Factors Trees/*physiology *Tropical Climate climate feedback drought plant functional traits plant secondary metabolism thermotolerance tree physiology tropical forest vol;
Notes:		"MedlineTaylor, Tyeen C McMahon, Sean M Smith, Marielle N Boyle, Brad Violle, Cyrille van Haren, Joost Simova, Irena Meir, Patrick Ferreira, Leandro V de Camargo, Plinio B da Costa, Antonio C L Enquist, Brian J Saleska, Scott R eng OISE-0730305/NSF-PIRE/International 3002937712/USDOE/International NNX17AF65G/NASA/National Aeronautics and Space Administration/ NNX14AK95H/NASA/National Aeronautics and Space Administration/ University of AZ Agnes Nelms Haury Program in Environment and Social Justice/International StG-2014-639706-CONSTRAINTS/ERC/International 16-26369S/Grant Agency of the Czech Republic/International N006852/1/NERC/International DP170104091/Ames Research Center NASA/ Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2018/07/06 New Phytol. 2018 Oct; 220(2):435-446. doi: 10.1111/nph.15304. Epub 2018 Jul 4"