GC035
Compound Climate Extremes and Vegetation Responses Across Time: From Instrumental Records to Paleoenvironments
Session ID#: 251531
Session Description:
Compound climate extremes—particularly the concurrence of heat and drought—are increasingly recognized as key drivers of ecosystem stress, vegetation mortality, and long-term land cover change. These “hot drought” events have intensified in frequency and severity over the 20th and 21st centuries, yet their impacts and ecological legacies remain poorly understood. This session invites contributions that examine the drivers, dynamics, and consequences of temperature-precipitation extremes and their influence on vegetation from both modern (instrumental era) and historical perspectives. We welcome interdisciplinary studies utilizing observational networks, remote sensing, modeling, dendrochronology, and other paleoclimatic or paleoenvironmental proxies. Particularly encouraged are submissions that explore non-stationarity in risk, feedbacks between vegetation and climate, and insights into resilience across spatial and temporal scales.
Co-Sponsor(s):
Index Terms:
0476 Plant ecology [BIOGEOSCIENCES]
1620 Climate dynamics [GLOBAL CHANGE]
1812 Drought [HYDROLOGY]
3322 Land/atmosphere interactions [ATMOSPHERIC PROCESSES]
Primary Convener: Justin T. Maxwell, Indiana University Bloomington, Bloomington, IN, United States
Convener: Grant L. Harley, University of Idaho, Department of Earth and Spatial Sciences, Moscow, United States
Student/Early Career Convener: Karen King, University of Tennessee, Department of Geography and Sustainability, Knoxville, TN, United States
Compound Climate Extremes Drive Biogeochemical Hot Moments in a Semi-Arid Grassland (1886658)
J. Alexander Siggers1, A. C. Roberts1, Alan Knapp1 and Melinda Dianne Smith2, (1)Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, United States, (2)Colorado State University, Department of Biology and Graduate Degree Program in Ecology, Fort Collins, CO, United States
Saltwater Intrusion Drives Ghost Forest Formation and the Loss of Old-Growth Bald Cypress in the Northeast Cape Fear Watershed, Wilmington, North Carolina (1894603)
Madison Gerdes, University of North Carolina at Wilmington, Wilmington, NC, United States, Monica Rother, University of North Carolina Wilmington, Environmental Sciences, Wilmington, United States, Andrea Hawkes, University of North Carolina at Wilmington, Earth and Ocean Sciences, Wilmington, United States and Philip Joseph Bresnahan Jr, University of North Carolina Wilmington, Earth and Ocean Sciences, Wilmington, United States
The Year 2022 Marked an Extreme Hot Drought in the Western Himalayas in Over Four Centuries: Tree-ring Insights into Compound Climate Extremes and Vegetation Responses (1943549)
Mr. Pushpendra Pandey, MA1,2, Moetasim Ashfaq3, Devi Lal4, Mayank Shekhar5, Bhupendra Singh6, Parminder S Ranhotra5, Pritam Chand7 and Amalava Bhattacharyya1, (1)Birbal Sahni Institute of Palaeosciences, Quaternary, Lucknow, India, (2)Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, India, (3)Oak Ridge National Laboratory, Computational Sciences and Engineering Divison, Oak Ridge, TN, United States, (4)Central University of Punjab, Bathinda, Department of Geography, Bathinda, India, (5)Birbal Sahni Institute of Palaeosciences, Lucknow, India, (6)Indian Institute of Tropical Meteorology, Pune, India, (7)Central University of Punjab, Department of Geography, Bathinda, India
Global Vegetation Responses to Compound Dry and Hot Events (1943702)
Meizhu Chen1, Zhihui Lin2, Haotian Li1 and Xianfeng Liu1, (1)School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China, Xian, China, (2)School of Tourism & Research Institute of Human Geography, Xi’an International Studies University, Xi’an 710128, China, Xian, China
Tree-Ring Anatomy Captures Boreal Tree Responses to Summer Heat Extremes and Atmospheric Drought (1971192)
Julie Edwards1, Kevin J Anchukaitis2,3, Francisca Molina2, Kiyomi Morino3, Laia Andreu-Hayles4, Rosanne D'Arrigo5 and Georg von Arx6, (1)UC Santa Barbara, Bren School of Environmental Science & Management, Santa Barbara, United States, (2)University of Arizona, School of Geography, Development, and Environment, Tucson, United States, (3)University of Arizona, Laboratory of Tree-Ring Research, Tucson, United States, (4)ICREA CREAF / Columbia University, Lamont-Doherty Earth Observatory, Barcelona, Spain, (5)Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, (6)WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Forest Dynamics, Birmensdorf, Switzerland
Investigating the Impacts of Compounding Stress on Thinned and Unthinned Pacific Northwest Conifer Forests (1981626)
Shuyue Li1, Tara W Hudiburg2, Danielle Berardi3, Justin Mathias4, William R Wieder5, Noah Jackson2 and Nick Koenig3, (1)University of Idaho, Institute for Innovative Climate Solutions, Moscow, United States, (2)University of Idaho, College of Natural Resources, Moscow, United States, (3)University of Idaho, Institute for Innovative Climate Solutions, Moscow, ID, United States, (4)West Virginia University, Department of Biology, Morgantown, United States, (5)National Center for Atmospheric Research, CGD, Boulder, United States
Cyclonic Disturbance and Ecosystem Response: Insights from Vegetation Dynamics in Madagascar Under a Changing Climate (1999616)
Gracie Zhang, Stanford University, Civil and Environmental Engineering, Stanford, United States, Lois Tanglao, University of California, Berkeley, Rausser College of Natural Resources, Berkeley, United States, Hikari Murayama, University of California Berkeley, Energy and Resources Group, Berkeley, CA, United States and Rachel Young, University of California Berkeley, Berkeley, CA, United States
