B53C:
Asymmetric Responses of Ecosystems to Changing Precipitation Regimes: Theory, Experiments, and Modeling Approaches II Posters

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Session ID#: 26285

Session Description:
Precipitation is a primary determinant of terrestrial ecosystem structure and function over much of the globe. Thus, understanding how ecosystems respond to changes in precipitation is important ecologically and to land-atmosphere models that couple terrestrial vegetation to the carbon cycle. Recent evidence has accumulated that many types of ecosystem responses to precipitation are asymmetric, with responses to increases in precipitation differing in magnitude from responses to equivalent decreases. This session will address the theory underlying asymmetric responses to precipitation change, experimental evidence for such responses and the ability of models to capture this phenomenon. Collectively, presentations will identify knowledge gaps, highlight new research directions, and provide a comprehensive perspective to improve our understanding of carbon cycle dynamics as well as forecasts of ecosystem responses to climate change. We invite biogeochemists, climatologists, ecologists, hydrologists, and system modelers to present results relevant to asymmetric responses of terrestrial ecosystems to changes in precipitation.
Primary Convener:  Alan Knapp, Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States
Conveners:  Melinda Dianne Smith, Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States, Osvaldo Sala, Arizona State University, School of Life Sciences, Tempe, AZ, United States and Philippe Ciais, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette, France
Chairs:  Alan Knapp, Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States and Melinda Dianne Smith, Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States
OSPA Liaison:  Melinda Dianne Smith, Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States

Cross-Listed:
  • GC - Global Environmental Change
  • H - Hydrology
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
0466 Modeling [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

Vegetation response to the 2016-2017 extreme Sierra Nevada snowfall event using multitemporal terrestrial laser scanning: initial results (283179)
Jonathan A Greenberg1, Zhengyang Hou2, Carlos Ramirez3, Rodney Hart3, Niccolo' Marchi4, Adriana Sofia Parra5, Brittney Gutierrez6, Ryan Tompkins7, Adrian Harpold2, Benjamin W Sullivan1 and Peter Weisberg8, (1)University of Nevada Reno, Natural Resources and Environmental Science, Reno, United States, (2)University of Nevada Reno, Department of Natural Resources and Environmental Science, Reno, NV, United States, (3)USDA Forest Service, Pacific Southwest Region Remote Sensing Lab, McClellan, CA, United States, (4)University of Padova, Padova, Italy, (5)University of Nevada Reno, Reno, United States, (6)University of Nevada Reno, Reno, NV, United States, (7)US Forest Service, Quincy, CA, United States, (8)University of Nevada Reno, Natural Resources and Environmental Science, Reno, NV, United States
The partitioning of litter carbon during litter decomposition under different rainfall patterns: a laboratory study (229954)
Xu Yang1, Katalin A Szlavecz2, J. Adam Langley3, Scott Pitz1 and Chih-Han Chang1, (1)Johns Hopkins University, Baltimore, MD, United States, (2)Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States, (3)Villanova University, Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova, United States
Alterations in plant community niche hypervolume and functional group representation to accommodate extreme drought (275669)
Wei Mao1, Zhibin Sun2, Andrew Jennings Felton3, Xueyong Zhao4, Tonghui Zhang4, Yulin Li4 and Melinda Dianne Smith5, (1)Northwest institute of Eco-Environment and Resource, Chinese Academy of Sciences, Lanzhou, China, (2)Colorado State University, Fort Collins, CO, United States, (3)Montana State University, Land Resources and Environmental Sciences, Bozeman, MT, United States, (4)Northwest institute of Eco-Environment and Resource, Chinese Academy of Sciences, Lanzhou, China, Lanzhou, China, (5)Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States
Drought-induced legacy effects in wood growth across the Eastern and Midwestern U.S. are mediated by site climate, tree age, and drought sensitivity (225997)
Steven Kannenberg, Indiana University, Bloomington, IN, United States, Justin T. Maxwell, Indiana University, Bloomington, United States, Neil Pederson, Harvard Forest, Petersham, United States, Loïc D'Orangeville, University of New Brunswick, Fredericton, QC, Canada and Richard P Phillips, Indiana University, Department of Biology, Bloomington, IN, United States
Contraction and Expansion of the Upper Zambezi Wetlands in Response to Precipitation Regime Changes and Impacts on Carbon, Energy and Water Fluxes (242488)
Lauren Lowman, Wake Forest University, Department of Engineering, Winston-Salem, NC, United States and Ana Paula Barros, Duke University, Durham, NC, United States
Enhanced growths after extreme wetness compensate post-drought carbon loss in dry forest ecosystems (270357)
Peng Jiang1, Hongyan Liu2 and Hongya Wang2, (1)Peking University, Beijing, China, (2)College of Urban and Environmental Sciences and MOE Laboratory for Earth Surface, Peking University, Beijing, China
Sensitivity of productivity and respiration to water availability determines the net ecosystem exchange of carbon terrestrial ecosystems of the United States (274267)
Zhihua Liu, University of Montana, Missoula, United States, Ashley Ballantyne, University of Montana, Missoula, MT, United States, Benjamin Poulter, Spark Climate Solutions, Washington, D.C., United States, William Anderegg, University of Utah, Salt Lake City, United States, Andrew R Jacobson, NOAA, Global Monitoring Laboratory, Boulder, United States; University of Colorado at Boulder, CIRES, Boulder, United States and John B Miller, NOAA Earth System Research Lab, Boulder, CO, United States

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