B41L:
Past, Present, and Future of Dryland Ecosystems: Local Trends to Global Impacts I

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Session ID#: 31803

Session Description:
Dryland ecosystems cover 35% of the world’s surface, host major centers of global plant diversity, support over third of the global human population mainly in the developing countries, and play an important role in land CO2 sink. 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 hydrological budgets, ecosystem services and sustainable livelihoods. In this session we seek to i) highlight advances in our collective understanding of carbon, water and vegetation-related processes in dryland ecosystems under changing climate and management across temporal and spatial scales, and ii) 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:  Istem Fer, Boston University, Earth and Environment, Boston, MA, United States
Conveners:  Shishir Basant, Texas A&M University, Ecology & Conservation Biology, College Station, TX, United States, Natasha MacBean, University of Arizona, School of Natural Resources and the Environment, Tucson, AZ, United States and Yong Zhou, Yale University, New Haven, CT, United States
Chairs:  Istem Fer, Boston University, Earth and Environment, Boston, MA, United States, Natasha MacBean, Western University, Department of Geography & Environment and Department of Biology, London, Canada, Yong Zhou, Yale University, New Haven, CT, United States and Shishir Basant, Texas A&M University, Ecology & Conservation Biology, College Station, TX, United States
OSPA Liaison:  Natasha MacBean, Western University, Department of Geography & Environment and Department of Biology, London, Canada

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

0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
0476 Plant ecology [BIOGEOSCIENCES]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
1813 Eco-hydrology [HYDROLOGY]

Abstracts Submitted to this Session:

Dryland responses to global change suggest the potential for rapid non-linear responses to some changes but resilience to others (Invited) (251319)
Sasha Reed1, Scott Ferrenberg2, Colin Tucker3, William Austin Rutherford4, Timothy Michael Wertin5, Theresa Ann McHugh6, Ember Morrissey7, Cheryl Kuske8 and Jayne Belnap2, (1)U.S. Geological Survey, Southwest Biological Science Center Moab, Moab, United States, (2)Southwest Biological Science Center Moab, Moab, UT, United States, (3)Southwest Biological Science Center Moab, Moab, United States, (4)Canyonlands Research Station, USGS, Southwest Biological Science Center, Moab, UT, United States, (5)Institute for Genomic Biology, Urbana, IL, United States, (6)Center for Ecosystem Science and Society, Flagstaff, AZ, United States, (7)West Virginia University, Department of Biology, Morgantown, WV, United States, (8)Los Alamos National Laboratory, Los Alamos, NM, United States
Expanding dryland ecosystem flux datasets enable novel quantification of water availability and carbon exchange in Southwestern North America (Invited) (232496)
Dr. Joel A Biederman, PhD, USDA-ARS, Southwest Watershed Research Center, Tucson, AZ, United States, Russell L Scott, Agricultural Research Service Tucson, Tucson, AZ, United States, William Kolby Smith, University of Arizona, Tucson, AZ, United States, Marcy E Litvak, University of New Mexico, Department of Biology, Albuquerque, United States and Natasha MacBean, Western University, Department of Geography & Environment and Department of Biology, London, Canada
Contribution of trees and grasses to ecosystem fluxes of water, carbon, and energy throughout the seasons under different nutrient availability (292067)
Mirco Migliavacca1, Tarek S. El-Madany1, Oscar Perez-Priego1, Yunpeng Luo2, Gerardo Moreno3, Arnaud Carrara4, Olaf Kolle1 and Markus Reichstein5, (1)Max Planck Institute for Biogeochemistry, Jena, Germany, (2)Max-Planck Institute for Biogeochemistry, Jena, Germany, (3)Universidad de Extremadura, Dto. de Biologia Vegetal, Ecologia y CC. Tierra,, Plasencia, Caceres, Spain, (4)Fundación Centro de Estudios Ambientales del Mediterráneo (CEAM), Valencia, Spain, (5)Integrative Center for Biodiversity Research, Leipzig, Germany
Biomass and the Climatic Space from historical to future scenarios of a Seasonally Dry Tropical Forest - Caatinga (295103)
Andrea D de Almeida Castanho1,2, Michael Thomas Coe2, Eunice Maia Andrade1, Wayne S Walker3, Alessandro Baccini4, Paulo M Brando5 and Mary Farina4, (1)UFC Federal University of Ceará, Fortaleza, Brazil, (2)Woodwell Climate Research Center, Falmouth, United States, (3)The Woods Hole Research Center, Falmouth, United States, (4)Woods Hole Research Center, Falmouth, MA, United States, (5)Woodwell Climate Research Center, Falmouth, MA, 02540-1644, USA, Falmouth, MA, United States
Savanna Vegetation Dynamics and their Influence on Landscape-Scale C, N, and P Biogeochemistry (Invited) (226508)
Thomas W Boutton, Texas A&M University, Ecology and Conservation Biology, College Station, United States, Yong Zhou, Yale University, New Haven, CT, United States, X. Ben Wu, Texas A&M University, Ecology & Conservation Biology, College Station, TX, United States and Ayumi Hyodo, Texas A&M University, Department of Ecosystem Science and Management, College Station, TX, United States
Changes in Soil Organic Matter Abundance, Molecular Composition, and Diversity in an Arid Ecosystem in Response to Long-term Elevated CO2 Manipulation. (283646)
Maggie Mae Bowman, Pacific Northwest National Laboratory, Richland, WA, United States, Malak Tfaily, Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States, R David Evans, Washington State University, School of Biological Sciences, Pullman, WA, United States and Akihiro Koyama, Univeristy of Idaho, Moscow, ID, United States
Soil Texture Mediates the Response of Tree Cover to Rainfall Intensity in African Savannas (241214)
Madelon Florence Case, Yale University, New Haven, CT, United States and Jennifer Marlon, Yale University, School of the Environment, New Haven, CT, United States

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