OOS 33 - A change is already here: Implications of intensifying drought for terrestrial ecosystems

Organizer(s)

• MS

  Melinda Smith

  Colorado State University
  Fort Collins, Colorado, United States

Co-Organizer(s)

• OS

  Osvaldo Sala

  Professor
  Arizona State University
  Tempe, Arizona, United States
• KW

  Kate Wilkins

  Postdoctoral Fellow
  Colorado State University, United States

Moderator(s)

• JD

  Jeffrey Dukes

  Professor
  Purdue University Departments of Forestry and Natural Resources & Biological Science
  West Lafayette, IN, United States

Global climate change is increasing the frequency, magnitude and duration of droughts. Indeed, this intensification of drought events is already being experienced in many regions of the globe. Droughts that are of greater extremity and duration are expected to have large and long-lasting ecological and societal impacts, with these effects only expected to be further compounded as such drought events occurring more frequently. Despite the expected dire consequences of intensified drought, scientists are just beginning to accumulate the knowledge needed to develop a predictive understanding of the ecological consequences of more extreme, longer duration, and more frequent droughts in space and time. For this organized oral session, we bring together speakers that will present results from experiments and simulation modeling that encompass multiple sites and years to understand the ecological impacts of intensified drought. The major outcome of the session will be to synthesize how intensifying drought is affecting ecological systems in space and time and identification of future research priorities.

Presentations:

• 3:30 PM – 3:45 PM EDT

  Multiyear drought effects on North American warm deserts
  

  Presenting Author: Timothy J. Ohlert – University of New Mexico

  Co-author: Timothy J. Ohlert – University of New Mexico

  Co-author: Alesia Hallmark – Department of Biology, University of New Mexico

  Co-author: Mariah Patton – Department of Biology, University of New Mexico

  Co-author: Gregor Hamilton – Department of Biology, University of New Mexico

  Co-author: Scott L. Collins – University of New Mexico
• 3:45 PM – 4:00 PM EDT

  Primary production responses to extreme changes in North American Monsoon precipitation move up an elevation gradient through time
  

  Presenting Author: Seth M. Munson – U.S. Geological Survey, Southwest Biological Science Center

  Co-author: Seth M. Munson – U.S. Geological Survey, Southwest Biological Science Center

  Co-author: John B. Bradford – USGS

  Co-author: Bradley J. Butterfield – Northern Arizona University

  Co-author: Jennifer R. Gremer – University of California, Davis
• 4:00 PM – 4:15 PM EDT

  Drought responses of forage supply increased with increasing aridity in South American rangelands
  

  Presenting Author: Laura Yahdjian – University of Buenos Aires, Facultad de Agronomia. IFEVA-CONICET

  Co-author: Viviana Bondaruk – University of Buenos Aires, Facultad de Agronomia. IFEVA-CONICET

  Co-author: Gaston R. Oñatibia – University of Buenos Aires, Facultad de Agronomia. IFEVA-CONICET

  Co-author: Roberto Fernandez – University of Buenos Aires, Facultad de Agronomia. IFEVA-CONICET
• 4:15 PM – 4:30 PM EDT

  Impacts of intensified drought across space and time: Results from the International Drought Experiment
  

  Presenting Author: Kate D. Wilkins – Colorado State University

  Co-author: Melinda D. Smith – Colorado State University

  Co-author: Martin C. Holdrege – USGS Southwest Biological Science Center

  Co-author: Peter A. Wilfahrt – University of Minnesota

  Co-author: Laureano A. Gherardi – University of California, Berkeley

  Co-author: Timothy J. Ohlert – University of New Mexico

  Co-author: Scott L. Collins – University of New Mexico

  Co-author: Jeffrey S. Dukes – Purdue University Departments of Forestry and Natural Resources & Biological Science

  Co-author: Alan K. Knapp – Colorado State University

  Co-author: Richard P. Phillips, Ph.D. – Indiana University

  Co-author: Osvaldo E. Sala – Arizona State University

  Co-author: Anna Tatarko – University of Nevada, Reno

  Co-author: Andrew Felton – Chapman University

  Co-author: International Drought Experiment Network (IDE) – NA
• 4:30 PM – 4:45 PM EDT

  Improving model prediction of ecosystem responses to extreme drought events
  

  Presenting Author: Yiqi Luo – Northern Arizona University

  Co-author: Yu Zhou – Northern Arizona University
• 4:45 PM – 5:00 PM EDT

  A seasonal signature of drought impacts across US grasslands
  

  Presenting Author: Andrew Felton – Chapman University

  Co-author: Gregory Goldsmith – Schmid College of Science and Technology, Chapman University