GC33D:
Semi-arid Shrublands under Changing Climates II Posters

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Session ID#: 13892

Session Description:
Covering 35% of terrestrial land, arid and semi-arid systems are ripe for increased mechanistic understanding of the effects of increasing pressure from global change on ecosystem and community dynamics. While often overlooked, recent findings have underscored the importance of these ecosystems to global biogeochemistry, specifically their large role in driving interannual variability in the global carbon cycle. Changing climates may affect semi-arid shrublands in novel ways when compared to other systems, as a result of their already variable climatic conditions. This session invites contributions that explore the impact of altered precipitation, increased nutrient deposition, atmospheric carbon dioxide enrichment, warming temperatures, and increased invasion by exotic species on ecological processes in semi-arid shrublands, worldwide. We hope to collectively deepen understanding and improve predictions of how these systems are likely to change, and the impact this may have on both local and global scales.
Primary Convener:  Ellen H Esch, University of California San Diego, La Jolla, CA, United States
Conveners:  John B Kim, US Forest Service Corvallis, Corvallis, OR, United States, Dr. Joel A Biederman, PhD, Agricultural Research Service Tucson, Tucson, AZ, United States and David E Reed, Michigan State University, Center for Global Change and Earth Observations, East Lansing, MI, United States
Chairs:  Ellen H Esch, University of California San Diego, La Jolla, CA, United States, David E Reed, Michigan State University, Center for Global Change and Earth Observations, East Lansing, MI, United States, Dr. Joel A Biederman, PhD, Agricultural Research Service Tucson, Tucson, AZ, United States and John B Kim, US Forest Service Corvallis, Corvallis, OR, United States
OSPA Liaison:  David E Reed, Michigan State University, Center for Global Change and Earth Observations, East Lansing, MI, United States
Index Terms:

1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
1616 Climate variability [GLOBAL CHANGE]
1626 Global climate models [GLOBAL CHANGE]
1630 Impacts of global change [GLOBAL CHANGE]

Abstracts Submitted to this Session:

Carbon and water exchange over a temperate semi-arid shrubland during three years of contrasting precipitation and soil moisture patterns (118459)
Xin Jia, Beijing Forestry University, Yanchi Research Station, School of Soil and Water Conservation, Beijing, China
Implications of altered rainfall and exotic plants on soil microbial communities and carbon biomass (122484)
Sherlynette Castro, San Diego State University, San Diego, CA, United States, David Lipson, San Diego State University, Department of Biology, San Diego, United States and Elsa E Cleland, University of California San Diego, La Jolla, CA, United States
Responses of nocturnal rodents to shrub encroachment in Banni grasslands, Gujarat, India (123852)
Anisha Jayadevan, National Centre for Biological Sciences, Bengaluru, India
Shrub patch configuration in relation to precipitation and soil properties in Northwest China (128317)
Ying Fan1, Xiaoyan Li2, Yongmei Huang1, Liu Li3, Jinghui Zhang1 and Zhiyun Jiang1, (1)Beijing Normal University, Beijing, China, (2)Beijing Normal University, Faculty of Geographical Science, Beijing, China, (3)Xinjiang Agriculture University, College of Forestry and Horticulture, Urumchi, China
Soil texture in a coppice dune system: The relative role of aeolian and hydrologic processes (141347)
Junran Jimmy Li, University of Tulsa, Geosciences, Tulsa, OK, United States and Sujith Ravi, Temple University, Earth & Environmental Science, Philadelphia, PA, United States
Responses of leaf nitrogen concentration and leaf area of Populus sibirica seedlings to nitrogen fertilization in a semi-arid area, Mongolia (146630)
Hanna Chang, Korea University, Seoul, Korea, Republic of (South), Seung Hyun Han, Korea University, Department of Environmental Science and Ecological Engineering, Seoul, Korea, Republic of (South) and Yowhan Son, Korea University, Department of Environmental Science and Ecological Engineering, Seoul, South Korea
New Possibilities for High-Resolution, Large-Scale Ecosystem Assessment of the World’s Semi-Arid Regions (195036)
Jennifer A Burney, University of California San Diego, La Jolla, CA, United States and Ran Goldblatt, University of California San Diego, School of Global Policy and Strategy, La Jolla, CA, United States
Microenvironmental change as a mechanism to study global change. (169117)
Christopher J Lortie, National Center for Ecological Analysis and Synthesis, Santa Barbara, CA, United States
The Effects of High Temperature on Seasonal and Diurnal Cycles of Photosynthetic Water Use Efficiency of Southern California Native Shrubs (194779)
Alejandra Pesqueira, University of California Los Angeles, Atmospheric, Oceanic, and Environmental Sciences, Los Angeles, CA, United States, Alexandria Lynn Pivovaroff, Occidental College, Department of Biology, Los Angeles, United States, Wu Sun, University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, CA, United States and Ulrike Seibt, University of California Los Angeles, Department of Atmospheric and Oceanic Sciences, Los Angeles, United States
Effects of Drought on Carbon and Nitrogen Cycle in A Subtropical Evergreen Needle Leaf Forest (196339)
Pan LI1,2, Li Zhang2, Honglin He2, Guirui Yu3, Huimin Wang2 and Cong-Qiang Liu4, (1)Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China, (2)IGSNRR Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, China, (3)Key Laboratory of Ecosystem Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China, (4)Institute of Surface-Earth System Science, Tianjin University, Tianjin, China
Using remote sensing imagery to assess vegetation structure and spatial distribution on the Colorado Plateau (199206)
Hannah Elizabeth Yokum, Brigham Young University, Provo, UT, United States

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