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Ecology

Title:		"Responses of plant phenology, growth, defense, and reproduction to interactive effects of warming and insect herbivory"
Author(s):		Lemoine NP; Doublet D; Salminen JP; Burkepile DE; Parker JD;
Address:		"Department of Biological Sciences, Florida International University, 3000 NE 151st Street, North Miami, Florida, 33181, USA. Department of Earth & Environmental Science, Boston University, 685 Commonwealth Avenue, Boston, Massachusetts, 02215, USA. Natural Chemistry Research Group, Department of Chemistry, University of Turku, Turku, FI-20500, Finland. Department of Ecology, Evolution & Marine Biology, University of California, Santa Barbara, California, 93106, USA. Smithsonian Environmental Research Center, 647 Contees Wharf Road, Edgewater, Maryland, 21037, USA"
Journal Title:		Ecology
Year:		2017
Volume:		20170526
Issue:		7
Page Number:		1817 - 1828
DOI:		10.1002/ecy.1855
ISSN/ISBN:		0012-9658 (Print) 0012-9658 (Linking)
Abstract:		"Climate warming can modify plant reproductive fitness through direct and indirect pathways. Direct effects include temperature-driven impacts on growth, reproduction, and secondary metabolites. Indirect effects may manifest through altered species interactions, including herbivory, although studies comparing the interactive effects of warming and herbivory are few. We used experimental warming combined with herbivore exclusion cages to assess the interactive effects of climate warming and herbivory by Popillia japonica, the Japanese beetle, on flowering phenology, growth, defense, and lifetime reproduction of a biennial herb, Oenothera biennis. Regardless of temperature, herbivory delayed flowering phenology and, surprisingly, led to decreased levels of foliar defenses. At ambient temperatures, plants were able to compensate for herbivory by producing smaller seeds and increasing total seed production, leading to similar investment in seed biomass for plants exposed to and protected from herbivores. At elevated temperatures, plants had elevated total seed production, but herbivory had negligible impacts on flower and fruit production, and total lifetime seed biomass was highest in plants exposed to herbivores in warmed conditions. We speculate that warming induced a stress response in O. biennis resulting from low soil moisture, which in turn led to an increase in seed number at the expense of maternal investment in each seed. Plant-insect interactions might therefore shift appreciably under future climates, and ecologists must consider both temperature and herbivory when attempting to assess the ramifications of climate warming on plant populations"
Keywords:		Animals Climate *Herbivory *Insecta Oenothera biennis *Plants Reproduction Popillia japonica climate change compensation fitness herbivory secondary chemistry;
Notes:		"MedlineLemoine, Nathan P Doublet, Dejeanne Salminen, Juha-Pekka Burkepile, Deron E Parker, John D eng 2017/04/14 Ecology. 2017 Jul; 98(7):1817-1828. doi: 10.1002/ecy.1855. Epub 2017 May 26"