B13C:
Past, Present, and Future of Water-Limited Ecosystems: Local Trends to Global Impacts II


Submit an Abstract to this Session


Session ID#: 59849

Session Description:
Water-limited ecosystems, encompassing arid, semi-arid and sub-humid regions (also referred to as drylands), cover ~40% of the earth surface, host major centers of plant diversity, support over third of the global human population - mainly in the developing countries -  and represent a major uncertainty in the global carbon cycle. Yet, drylands are in zones of transition that will be affected by future global change, including drought and land degradation, with unclear consequences on global carbon and water budgets, ecosystem services and sustainable livelihoods. In this session we seek to i) highlight advances in our understanding of hydrological, biogeochemical and ecological processes in water-limited environments; ii) investigate the response of drylands ecosystems to changing climate, elevated CO2, and different land use and management practices; and iii) provide perspectives on needs and directions for future research. Contributions from both modeling and experimental studies across a wide range of fields are welcome.
Primary Convener:  Natasha MacBean, Indiana University - Bloomington, Geography, Bloomington, IN, United States
Conveners:  Istem Fer, Boston University, Earth and Environment, Boston, MA, United States, Shishir Basant, Texas A&M University, Ecology & Conservation Biology, College Station, TX, United States and Yong Zhou, Yale University, New Haven, CT, United States
Primary Liaison:  Natasha MacBean, Indiana University - Bloomington, Geography, Bloomington, IN, United States
Chairs:  Natasha MacBean, Indiana University - Bloomington, Geography, Bloomington, IN, United States, Shishir Basant, Texas A&M University, Ecology & Conservation Biology, College Station, TX, United States, Istem Fer, University of Potsdam, Potsdam, Germany and Yong Zhou, Yale University, New Haven, CT, United States
OSPA Liaison:  Shishir Basant, Texas A&M University, Ecology & Conservation Biology, College Station, TX, United States
Co-Organized with:
Biogeosciences, and Hydrology

Cross-Listed:
  • A - Atmospheric Sciences
  • GC - Global Environmental Change
  • H - Hydrology

Proposed Co-Organized Session with:
  • H - Hydrology
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
1630 Impacts of global change [GLOBAL CHANGE]
1813 Eco-hydrology [HYDROLOGY]

Abstracts Submitted to this Session:

Functional trait diversity explains grassland sensitivity to drought (447577)
Robert James Griffin-Nolan, Colorado State University, Biology, Fort Collins, CO, United States and Alan Knapp, Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States
Differential impacts of multi-year macroscale drought on productivity of water-limited grasslands: the role of indirect plant community effects (Invited) (439320)
Melinda Dianne Smith1, Lauren Bauer2, Scott L Collins3,4 and Alan Knapp1, (1)Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States, (2)University of New Mexico Main Campus, Albuquerque, NM, United States, (3)Department of Biology, MSC03-2020, University of New Mexico, Albuquerque, United States, (4)University of New Mexico, Department of Biology, Albuquerque, NM, United States
Unexpected patterns of grassland root production during and after repeated extreme droughts (445256)
Ingrid Slette1, David Lewis Hoover2, Alan Knapp3 and Melinda Dianne Smith3, (1)Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, CO, United States, (2)USDA Agriculture Research Service, Fort Collins, CO, United States, (3)Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States
On the role of N and P availability to drive water use and energy fluxes in a Mediterranean Savanna (442230)
Tarek S. El-Madany1, Markus Reichstein1, Arnaud Carrara2, Jürgen Knauer3, Thomas Wutzler1, Oscar Perez-Priego1, Javier Pacheco Labrador4, Tiana W Hammer1, Maria Pilar Martin Isabel4, Gerardo Moreno5 and Mirco Migliavacca6, (1)Max Planck Institute for Biogeochemistry, Jena, Germany, (2)Fundación Centro de Estudios Ambientales del Mediterráneo (CEAM), Valencia, Spain, (3)Max Planck Institute for Biogeochemistry, Biogeochemical Integration, Jena, Germany, (4)Centro de Ciencias Humanas y Sociales, Madrid, Spain, (5)Universidad de Extremadura, Dto. de Biologia Vegetal, Ecologia y CC. Tierra,, Plasencia, Caceres, Spain, (6)Max Planck Institute for Biogeochemistry, Department of Biogeochemical Integration, Jena, Germany
Biome-specific responses of water-limited ecosystems to precipitation pulses across the New Mexico Elevation Gradient (NMEG) (457129)
Marcy E Litvak, Department of Biology, MSC03-2020, University of New Mexico, Albuquerque, NM, United States, Tomer Duman, University of New Mexico, Biology, Albuquerque, NM, United States, Cheng-Wei Huang, Portland State University, Civil and Environmental Engineering, Portland, OR, United States and William Pockman, Univ New Mexico, Albuquerque, NM, United States
Drivers, Interactions, and Timescales for Carbon and Water Fluxes in semiarid ecosystems (351631)
Kimberly E Samuels-Crow, Northern Arizona University, School of Informatics, Computing, and Cyber Systems, Flagstaff, AZ, United States, Kiona Ogle, Northern Arizona University, School of Informatics, Computing, and Cyber Systems, Flagstaff, United States and Marcy E Litvak, University of New Mexico, Department of Biology, Albuquerque, United States
Evaporative Cooling Enables Desert Plants to Maintain Photosynthesis in Extreme Heat (426630)
Luiza Maria T Aparecido, Arizona State University, Tempe, AZ, United States, Kevin R Hultine, Desert Botanical Garden, Research, Conservation, and Collections, Phoenix, United States and Benjamin Wong Blonder, Arizona State University, Tempe, United States
Plant Production Responses to Water Balance Differ Across Dryland Ecosystems and are Enhanced Under Extremes (413688)
Seth M Munson, U.S. Geological Survey, Southwest Biological Science Center, Flagstaff, AZ, United States and Erin Bunting, Michigan State University, Department of Geography, Environment, and Spatial Sciences, East Lansing, MI, United States

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