OOS 6 - Agroecosystem Responses to Multiple Global Change Drivers in the Anthropocene

Tuesday, August 9, 2016: 8:00 AM-11:30 AM
316, Ft Lauderdale Convention Center
Wei Ren, University of Kentucky
Hanqin Tian, Auburn University
Hanqin Tian, Auburn University
As we progress into the Anthropocene Epoch, agricultural systems, being involved in the most active human activities, are confronted with serious, complex, and even unprecedented environmental challenges due to multiple global changes in climate, air pollution, land use change and management etc. Those changing multiple drivers derived from direct and indirect human activities occur across temporal and spatial scales, and interactively work together to make tremendous impacts on agroecosystems from cellular chemistry to ecosystem processes. For example, climate change, one long-term control factor, dominantly influences agroecosystem processes simultaneously working with short-term controls (such as disturbance regime, human activity, air pollution) characterized by regions and times. Multiple drivers of change form into novel conditions and ultimately cause major changes in the structure and functioning of agroecosystems through altering hydrological and nutrient cycles, influencing soil microbial activity, adding or moving species and so on. To achieve the goals of sustainable agriculture and food systems globally and regionally in coping with the environmental challenges timely, it is urgently needed to understand the dynamic responses of the functions and structures in agroecosystems to the novel conditions i.e. multiple global environment changes across the world. This session aims to convene an array of scholars working up-to-the-minute to show advances in studying responses (ecosystem production, biogeochemical cycles, microbial activity etc.) of diverse agroecosystems (crops, pasture and plantation/managed forest) to multiple drivers of change using different approaches covering field experiments, remote sensing/GIS, modeling, and data synthesis. The primary objectives will be tripled: (1) to present the frontier research progress that have explored the complexity of the interactive effects of multiple drivers or controls and their impacts on agroecosystems; (2) to discuss potential benefits and problems of multiple global change drivers facing divers agroecosystems (crops, pasture and plantation/managed forest) at reginal scales in next decade; (3) to promote the substantial advances in interdisciplinary studies on this challenging issue in future.
8:20 AM
 Towards developing an improved physiological understanding of the combined impacts of air pollution and climate change on ecosystems
Lisa Emberson, Environment Dept., University of York; Patrick Bueker, Environment Dept., University of York; Alan Briolat, Environment Dept., University of York; Stephanie Osborne, Bangor; Jana Sillmann, Centre for International Climate and Environmental Research; Gina Mills, Bangor
8:40 AM
 Shifts in cultivar and planting date have regulated rice growth duration subjected to climate warming in China since the early 1980s
Yao Huang, Institute of Botany, Chinese Academy of Sciences; Xunyu Hu, Institute of Botany, Chinese Academy of Sciences; Wenjuan Sun, Institute of Botany, Chinese Academy of Sciences
9:00 AM
 Trends and driving factors of cropping intensity in China during 2000-2013
Huimin Yan, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
9:20 AM
 Crops response to multiple global change drivers: Effect of changes in temperature and rainfall patterns on corn and potato yields in US Eastern Seaboard Region
Shardendu K Singh, University of Maryland; Vangimalla R. Reddy, USDA-ARS; David H. Fleisher, USDA-ARS; Dennis J. Timlin, USDA-ARS
9:40 AM
9:50 AM
 Interactive effects of climate change and forest management on water yield and productivity in the southeastern U.S.: Field evidence and modeling results
Ge Sun, USDA Forest Service; Eric Ward, Oak Ridge National Laboratory; Jean-Christophe Domec, North Carolina State University; Asko Noormets, North Carolina State University; Steve G. McNulty, USDA Forest Service
10:10 AM
 Agroecosystem responses to multiple global changes: Challenges at the agriculture-water-climate nexus in the Mississippi River basin
Wei Ren, University of Kentucky; Hanqin Tian, Auburn University; Bo Tao, University of Kentucky; Yawen Huang, University of Kentucky; Jia Yang, Auburn University; Bowen Zhang, Auburn University; Shufen Pan, Auburn University
10:30 AM
 Does a large carbon sink imply a heathy forest?
Benjamin S. Felzer, Lehigh University
10:50 AM
 Effects of agricultural land use change on summer temperature extremes: Evidence from local, regional, and global scale analyses
Nathaniel D. Mueller, Harvard University; William K. Smith, Luc Hoffmann Institute; Tyler Lark, University of Wisconsin; Holly Gibbs, University of Wisconsin-Madison; Andrew Rhines, Harvard University; Deepak K. Ray, University of Minnesota; N. Michele Holbrook, Harvard University; Peter J. Huybers, Harvard University; Stefan Siebert, University of Bonn