IGN 13 - Bloom and Bust: Ecological Consequences of Precipitation Variability in Aridlands

Wednesday, August 9, 2017: 8:00 AM-9:30 AM
C123, Oregon Convention Center
Daniel L. Potts, SUNY Buffalo State
Greg A. Barron-Gafford, University of Arizona
Daniel L. Potts, SUNY Buffalo State
An emerging consensus acknowledges increasing precipitation variability as a hallmark of anthropogenic global change. How aridlands, which are characterized by episodic resource abundance and scarcity, will respond to future precipitation variability is of broad ecological interest. From seasonal drought to decadal oscillations, precipitation variability’s influence is reflected in the adaptations and life histories of aridland species, patterns of community composition in space and time, and the biogeochemistry of aridland ecosystems. Understanding the ecological consequences of an increasingly variable future climate is critical to managing the goods and services that aridlands provide. This Ignite session will gather ecologists to examine the consequences of precipitation variability on aridland ecology from a variety of perspectives and spanning a range of spatial and temporal scales. Topics we hope to explore in this session and its resulting discussion include identifying knowledge gaps in the role of biotic and abiotic legacies of precipitation variability, improving linkages between field- and model-based investigations, exploring the dynamic linkage between above- and belowground components of aridland ecosystems, and contrasting the ecological consequences of cool- and warm-season drought.
 Drought and heat can delay phenological development and reduce growth of semi-arid trees
Henry D. Adams, Oklahoma State University; Adam D. Collins, Los Alamos National Laboratory; Elizabeth A. Stockton, Los Alamos National Laboratory; Samuel P. Briggs, Los Alamos National Laboratory; Michel Vennetier, Irstea, UR Ecosystèmes Méditerranéens et Risques; L. Turin Dickman, Los Alamos National Laboratory; Sanna A. Sevanto, Los Alamos National Laboratory; Núria Garcia-Forner, CREAF; Nate G. McDowell, Los Alamos National Laboratory
 Local adaptation to drought in a widely distributed non-native woody plant species
Susan Bush, Desert Botanical Garden; Randall W. Long, University of California Santa Barbara; Dan F. Koepke, Desert Botanical Garden; Kevin C. Grady, Northern Arizona University; Kevin R. Hultine, Desert Botanical Garden
 Invasion alters ecosystem response to drought via shorter growing seasons and lower carbon capture
Elsa Cleland, University of California - San Diego; Ellen Esch, University of California - San Diego; David Lipson, San Diego State University
 Do nutrients modify ecosystem stability in response to precipitation variability?
Philip A. Fay, USDA, Agricultural Research Service; Laura Yahdjian, IFEVA, Facultad de Agronomía, Universidad de Buenos Aires, CONICET; Laureano A. Gherardi, Arizona State University; Elizabeth T. Borer, University of Minnesota; Stan W. Harpole, German Centre for Integrative Biodiversity Research; Eric M. Lind, University of Minnesota; Osvaldo E. Sala, Arizona State University; Eric W. Seabloom, University of Minnesota
 Temperature, not precipitation, is the dominant assembly filter in dryland plant communities
Brad Butterfield, Northern Arizona University; Seth M. Munson, U.S. Geological Survey
 Lagging behind: Have we overlooked previous-year rainfall effects in annual grasslands?
Joan Dudney, University of California at Berkeley; Lauren M. Hallett, University of Colorado Boulder; Loralee Larios, University of Montana; Emily C. Farrer, Tulane University; Katharine Suding, University of Colorado
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