B037
Determinants of ecosystem sensitivity to intensified drought
Session ID#: 77306
Session Description:
Climate change will result in an intensification of droughts in many regions of the globe. The effect of these droughts will depend on their frequency, magnitude and duration, as well as the sensitivity of ecosystems to these events, which is here defined as the rate of ecosystem change per unit decrease in precipitation. We hypothesize that ecosystem sensitivity will depend on the history of precipitation variability experienced by a site, as well as soil water-holding capacity and plant species diversity and composition. This session will host diverse studies ranging from single-site and networks of experiments to simulation modeling, and will tackle the effects of intensified drought on carbon cycle processes, and the role that historical precipitation variability and ecosystem attributes may play in determining drought sensitivity. The major outcomes of the session will be a synthesis of determinants of ecosystem sensitivity to drought and identification of future research priorities.
Index Terms:
0410 Biodiversity [BIOGEOSCIENCES]
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
1616 Climate variability [GLOBAL CHANGE]
Primary Convener: Osvaldo Sala, Arizona State University, School of Life Sciences, Tempe, AZ, United States
Conveners: Melinda Dianne Smith, Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, CO, United States and Laureano Gherardi, Arizona State University, School of Life Sciences, Tempe, AZ, United States
Primary Liaison: Osvaldo Sala, Arizona State University, School of Life Sciences, Tempe, AZ, United States
Lessons From the Dust Bowl: Grassland Responses to Extreme Drought (517130)
Alan Knapp1, Anping Chen2, Scott L Collins3, Yiqi Luo4 and Melinda Dianne Smith1, (1)Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, CO, United States, (2)Colora do State University, Fort Collins, CO, United States, (3)Department of Biology, MSC03-2020, University of New Mexico, Albuquerque, NM, United States, (4)Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States
Contrasting Response of Sahelian Woody and Herbaceous Covers to Altered Precipitation Characteristics (533908)
Wim Verbruggen1,2, Guy Schurgers2, Stephanie Horion2 and Hans Verbeeck1, (1)Ghent University, CAVElab - Department of Environment, Gent, Belgium, (2)University of Copenhagen, Department of Geosciences and Natural Resource Management, København K, Denmark
Ecosystem response to extreme drought in a South African savanna grassland. (543644)
Scott L Collins1, Sally E. Koerner2, Kevin R. Wilcox3, David I Thompson4, Kevin P Kirkman5, Alan Knapp6 and Melinda Dianne Smith6, (1)University of New Mexico Main Campus, Albuquerque, NM, United States, (2)University of North Carolina Greensboro, Department of Biology, Greensboro, United States, (3)University of Wyoming, Department of Ecosystem Science and Management, Laramie, WY, United States, (4)South African Environmental Observation Network, Ndlovu Node, Phalaborwa, South Africa, (5)University of KwaZulu-Natal, School of Life Sciences, Pietermaritzburg, South Africa, (6)Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, CO, United States
Net ecosystem carbon exchange after three years of experimental precipitation manipulation in a mixed-grass prairie. (553089)
Greg Newman1, Chang Gyo Jung2, Lifen Jiang3, Karen Castillioni1, Yiqi Luo3 and Lara Souza1, (1)University of Oklahoma, Norman, OK, United States, (2)Northern Arizona University, Flagstaff, AZ, United States, (3)Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States
Does drought exacerbate effect of biodiversity loss on litter decomposition (565135)
Junwei Luan1, Shirong Liu2, Siyu Li1, YI WANG1, Haibo Lu3, Junhui Zhang4, Shijie Han4, Hui Wang5, Lin Chen5, Wen-Jun Zhou6 and Yiping Zhang7, (1)International Centre for Bamboo and Rattan, Beijing, China, (2)Chinese Academy of Forestry, Research Institute of Forest Ecology, Environment and Protection, Beijing, China, (3)Sun Yat-Sen University, School of Atmospheric Sciences, Guangzhou, China, (4)Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China, (5)Chinese Academy of Forestry, Beijing, China, (6)Key Laboratory of Tropical Forest Ecology,Chinese Academy of Sciences, Mengla, China, (7)Key Lab of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun 666303, ChinaKey Lab of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, China
Recent increases in drought frequency cause observed multi-year drought legacies in the tree rings of semi-arid forests (566816)
Paul Szejner, University of Arizona, Laboratory of Tree-Ring Research, Tucson, AZ, United States, Soumaya Belmecheri, University of Arizona, Laboratory of Tree Ring Research, Tucson, AZ, United States, James R Ehleringer, Univ Utah, Salt Lake City, UT, United States and Russell K Monson, Univ of Arizona, Tucson, AZ, United States
Warming and drought influence the effect of mycorrhizal fungi on nutrient leaching (570886)
Haiyang Zhang, Hawkesbury Institute for the Environment, Western Sydney University, Sydney, NSW, Australia, Ian Anderson, University of Western Sydney, Hawkesbury Institute for the Environment, Penrith, Australia, Amy Churchill, Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia and Sally Power, Western Sydney University, Hawkesbury Institute for the Environment, Richmond, NSW, Australia
Tree Resistance, Recovery, and Recovery from Drought Events in Sierra Mixed-Conifer Forests (571252)
Teresa Bohner, University of California Riverside, Riverside, CA, United States and Jeff Diez, University of California Riverside, Botany and Plant Sciences, Riverside, CA, United States
Multiple re-current drought events shift the responses of the soil microbial community to a subsequent drought (574223)
Alberto Canarini1, Hannes Schmidt1, Victoria Martin1, David Zezula1, Lucia Fuchslueger2, Phillip Gündler1, Marina Jecmenica1, Michael Bahn3 and Andreas Richter4, (1)University of Vienna, Vienna, Austria, (2)University of Antwerp, Antwerp, Belgium, (3)University of Innsbruck, Institute of Ecology, Innsbruck, Austria, (4)University of Vienna, Department of Microbiology and Ecosystem Science, Vienna, Austria
The Ecohydrological Effects of Reducing Throughfall and Fog Inputs in a Tropical Cloud Forest (583150)
Matthew A Vadeboncoeur1, Heidi Asbjornsen1, Daniel B. Metcalfe2, Mauro Brum3, Rafael S. Oliveira4, Besit Luz Puma Vilca5, Luis Miguel Alvarez Mayorga5, Darcy Galiano5 and Aline B Horwath6, (1)University of New Hampshire Main Campus, Durham, NH, United States, (2)Lund University, Department of Physical Geography and Ecosystem Science, Lund, Sweden, (3)University of Arizona, Department of Ecology & Evolutionary Biology, Tucson, AZ, United States, (4)UNICAMP State University of Campinas, Campinas, Brazil, (5)Asociación Civil sin fines de lucro para la Biodiversidad, Investigación y Desarrollo Ambiental en Ecosistemas Tropicales, Cusco, Peru, (6)University of Stirling, Stirling, United Kingdom
Microbe-mediated Attenuation of Soil Respiration in Response to Soil Warming in a Temperate Oak Forest (587306)
YI WANG1, Shirong Liu2, Junwei Luan1 and Yanchun Liu3, (1)International Centre for Bamboo and Rattan, Beijing, China, (2)Chinese Academy of Forestry, Research Institute of Forest Ecology, Environment and Protection, Beijing, China, (3)International Joint Research Laboratory for Global Change Ecology, State Key Laboratory of Cotton Biology, College of Life Science, Henan University., Kaifeng, China
Advancements in an Ecological Drought Framework to Span Plant Stress to Regional Ecosystem Transformation (603081)
Seth M Munson1, John B Bradford1 and Kevin R Hultine2, (1)U.S. Geological Survey, Southwest Biological Science Center, Flagstaff, AZ, United States, (2)Desert Botanical Garden, Research, Conservation, and Collections, Phoenix, AZ, United States
Effects of intensified drought on ecosystem carbon cycling are mediated by land-use history and plant functional diversity in Atlantic heathlands (603667)
Siri Vatsø Haugum, University of Bergen, and Bjerknes Centre for Climate Research, Bergen, Norway, Liv Guri Velle, Moreforskning, Aalesund, Norway, Pål Thorvaldsen, Norwegian Institute of Bioeconomics, Tjøtta, Norway, Alexander Vågenes, University of Bergen, Department of Biological Sciences, Bergen, Norway, Casper Tai Christiansen, NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway and Vigdis Vandvik, University of Bergen, and Bjerknes Centre for Climate Research, Department of Biological Sciences, Bergen, Norway
Understanding the effects of varying water availability on soil microbial communities of the temperate forest (606614)
Juana Munoz Ucros1, Karin Pritsch2, Daniel H. Buckley3, Roland C Wilhelm4 and Taryn L. Bauerle1, (1)Cornell University, Horticulture, Ithaca, NY, United States, (2)Helmholtz Center Munich, Institute of Soil Ecology, Neuherberg, Germany, (3)Cornell University, School of Integrative Plant Science, Ithaca, NY, United States, (4)Cornell University, Soil and Crop Sciences, Ithaca, United States
An Experimental Assessment of Semi-Arid Savanna Resilience to Interactions of Drought, Fire, and Soil Fertility (607644)
William Rogers1, Heather J. Hannusch1, Alexandra Lodge2, Douglas Tolleson3 and Heath Starns3, (1)Texas A&M University College Station, Ecosystem Science and Management, College Station, TX, United States, (2)Texas A&M University College Station, College Station, TX, United States, (3)Texas A&M AgriLife Research-Sonora, Ecosystem Science and Management, Sonora, TX, United States
Drying Effects on Soil Respiration and Biogeochemistry Across Natural and Experimental Gradients in Rainfall and Fertility in Lowland Tropical Forests (610708)
Daniela F Cusack1, Lee Dietterich1, Amanda Longhi Cordeiro2 and Benjamin L Turner3, (1)Colorado State University, Department of Ecosystem Science and Sustainability, Fort Collins, CO, United States, (2)University of California Los Angeles, Los Angeles, United States, (3)Smithsonian Tropical Res Inst, Ancon, Panama
Future Multiyear Droughts in California and Implications of Vegetation Stress and Wildfire Risk (612820)
Gavin Dayanga Madakumbura1, Neil Berg2 and Alexander D Hall2, (1)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, (2)University of California Los Angeles, Los Angeles, CA, United States
Impact of drought on daytime surface temperature in semi-arid biomes across the New Mexico Elevation Gradient (614511)
Tomer Duman1, Cheng-Wei Huang2 and Marcy E Litvak1, (1)University of New Mexico, Biology, Albuquerque, NM, United States, (2)University Of New Mexico, Biology, Albuquerque, NM, United States
Analysis of drought characteristics and their impact on biodiversity (625269)
Efthymios Ioannis Nikolopoulos, Florida Institute of Technology, Department of Mechanical and Civil Engineering, Melbourne, FL, United States, Cory Merow, University of Connecticut, Department of Ecology and Evolutionary Biology, Storrs, CT, United States, Alex Pigot, University College London, Department of Genetics, Evolution and Environment, London, United Kingdom and Christopher Trisos, University of Cape Town, African Climate and Development Initiative, Cape Town, South Africa
