OOS 14
The Effects of Climate Change on Community and Ecosystem Processes: Lessons Learned from the Long-Term Ecological Research (LTER) Network

Tuesday, August 6, 2013: 1:30 PM-5:00 PM
101F, Minneapolis Convention Center
Kimberly J. La Pierre, UC Berkeley
Kimberly J. La Pierre, UC Berkeley
The Long Term Ecological Research Network (LTER) Graduate Student Committee will sponsor this session examining the effects of climate change on community and ecosystem processes in a variety of systems. Community and ecosystems processes in systems around the world are controlled by a variety of abitoic factors, including climatic variables. Although extensive research has been conducted examining how climate affects ecosystem structure and function, this remains an important objective for ecological research. In particular, the need for long-term experimental work examining how climate change will impact a variety of systems has become exceedingly clear. The goal of this session will be to bring together scientists studying the effects of climate change factors on both community and ecosystem level processes within the LTER network. The long term nature of LTER sites gives us the ideal perspective from which to examine this topic. This session aims to examine the effects of multiple climatic drivers that may influence community and ecosystem process through either chronic (press) events, such as long-term alteration in climatic variability, as well as through one-time (pulse) events, such as climatic extremes. The session will include speakers from a wide variety of study systems, including oceans, streams, lakes, grasslands, forests, and urban systems, in order to facilitate communication across these diverse fields. Additionally, speakers will be a combination of both lead PIs and graduate students from LTER sites in order to encourage discussion between these groups.
1:30 PM
 The role of animals in stabilizing ecosystem process under changing climate regimes
Lynn M. Christenson, Vassar College; Peter M. Groffman, Cary Institute of Ecosystem Studies; Myron J. Mitchell, SUNY ESF
1:50 PM Cancelled
 Climate-induced divergence in breeding population dynamics among Pygoscelis penguins: Nutritional-physiological mechanisms and evolutionary consequences
Kristen B. Gorman, Simon Fraser University; Kate E. Ruck, William & Mary; Tony D. Williams, Simon Fraser University; William Fraser, Polar Oceans Research Group
2:10 PM
 Effects of climate-driven lake level decline on coarse woody habitat and fishes
Jereme W. Gaeta, University of Wisconsin Madison; Greg G. Sass, Wisconsin Department of Natural Resources; Stephen R. Carpenter, University of Wisconsin - Madison
2:30 PM
 Sensitivity of north temperate lakes to past climatic variability and terrestrial disturbances over the past ca. 200 years
Jennifer E. Schmitz, University of Wisconsin - Madison; Sara C. Hotchkiss, University of Wisconsin
2:50 PM
 Effects of watershed management on sources and fluxes of water, carbon, and nitrogen in streams: Climate implications
Michael Pennino, University of Maryland, Baltimore County; Sujay S. Kaushal, University of Maryland; Paul Mayer, USEPA, National Health and Environmental Research Laboratory; Claire Welty, University of Maryland, Baltimore County; Andrew J. Miller, University of Maryland, Baltimore County
3:10 PM
3:20 PM
 Community and ecosystem scale responses to precipitation variability and extremes in semiarid grasslands, shrublands and woodlands
William T. Pockman, University of New Mexico; Amanda L. Boutz, University of New Mexico; Patrick J. Hudson, University of New Mexico- Albuquerque; Jean-Marc Limousin, University of New Mexico; Robert E. Pangle, University of New Mexico; Jennifer A. Plaut, University of New Mexico; Michell L. Thomey, University of New Mexico; Scott L. Collins, University of New Mexico; Marcy E. Litvak, University of New Mexico; Nate G. McDowell, Los Alamos National Laboratory; Eric E. Small, University of Colorado
3:40 PM
 Altering rainfall amount and pattern affects above- and belowground productivity differently among three US grassland types
Kevin R. Wilcox, Colorado State University; Joe C. von Fischer, Colorado State University; Jennifer Muscha, Fort Keogh Livestock and Range Research Laboratory; Mark Petersen, Fort Keogh Livestock and Range Research Laboratory; A.K. Knapp, Colorado State University
4:00 PM
 Plant diversity enhances soil microbial biomass and functions irrespective of warming scenarios
Katja Steinauer, University Jena; David Tilman, University of Minnesota; Peter D. Wragg, University of Minnesota; Simone Cesarz, Friedrich-Schiller-University Jena; Jane M. Cowles, University of Minnesota; Karin Pritsch, Helmholtz Zentrum München, German Research Center for Environmental Health; Wolfgang W. Weisser, Technical University of Munich; Nico Eisenhauer, Friedrich-Schiller-University Jena
4:20 PM
 Effects of experimental warming on a grassland insect and spider community
Margaret Kosmala, Harvard University; David Tilman, University of Minnesota
4:40 PM
 Evolutionary change depends on community context in BioCON, a long-term field study
Elizabeth J. Kleynhans, University of British Colombia; Sarah P. Otto, University of British Colombia; Peter B. Reich, University of Minnesota; Mark Vellend, Université de Sherbrooke