OOS 23
The Value of Comparative Approaches for Understanding Ecosystem Responses to Global Change

Wednesday, August 13, 2014: 8:00 AM-11:30 AM
304/305, Sacramento Convention Center
Melinda D. Smith, Colorado State University
Alan K. Knapp, Colorado State University; and Scott L. Collins, University of New Mexico
Alan K. Knapp, Colorado State University
Traditionally, ecological research has been dominated by site-based studies. However, the scale at which global changes are occurring demands research that moves beyond individual sites to that which is more comparative in nature. Comparative approaches are particularly important for understanding how and why ecosystems may differ in their sensitivity to global changes, such as land use change, climate change and eutrophication. Such understanding is critical for predicting how ecosystems may change in the future with increasing human pressures and forecast climate changes. The purpose of this organized oral session is to 1) bring together an international group of researchers employing a variety of comparative approaches, including between-ecosystem, inter-continental comparisons and network-level research, aimed at assessing the impacts of global change on ecosystem structure and function and 2) promote the value of comparative approaches to the next generation of ecologists.
8:00 AM
 Do environmental changes impact soil microbial composition and function differently in different grassland habitat types?
Kelly Gravuer, University of California, Davis; Joy Cookingham, University of California, Davis; Anu Eskelinen, University of Oulu; Susan Harrison, University of California
8:20 AM
 Spatial patterns of vegetation response to climate variability across the American Southwest
Mallory L. Barnes, University of Arizona; M. Susan Moran, USDA, ARS; Russell L. Scott, USDA-ARS; Guillermo E. Ponce-Campos, University of Arizona; Bhaskar Mitra, University of Arizona; Thomas E. Kolb, Northern Arizona University
8:40 AM
 Climate change manipulations in drylands: A comparative approach for understanding future ecosystem functioning
Marcelo Sternberg, Tel Aviv University; Katja Tielboerger, Tuebingen University; Jaime Kigel, Hebrew University
9:00 AM
 Differential effects of extreme drought on production and respiration: Synthesis and modeling analysis
Zheng Shi, University of Oklahoma; Michell L. Thomey, University of New Mexico; W. Mowll, Colorado State University; Marcy E. Litvak, University of New Mexico; Nathaniel Brunsell, University of Kansas; Scott L. Collins, University of New Mexico; William T. Pockman, University of New Mexico; Melinda D. Smith, Colorado State University; A.K. Knapp, Colorado State University; Yiqi Luo, University of Oklahoma
9:20 AM
 An inter-continental comparison of the effects of grazing and fire on savanna grassland plant community composition and ecosystem function
Sally E. Koerner, Duke University; Deron E. Burkepile, Florida International University; Richard W.S. Fynn, University of Botswana; Catherine E. Burns, San Francisco Bay Bird Observatory; Stephanie Eby, Yale University; Navashni Govender, Scientific Service Kruger National Park; Nicole Hagenah, University of Kwazulu-Natal; Katherine Matchett, University of KwaZulu-Natal; Dave Thompson, SAEON; Kevin R. Wilcox, Colorado State University; Scott L. Collins, University of New Mexico; Kevin Kirkman, University of KwaZulu-Natal; A.K. Knapp, Colorado State University; Melinda D. Smith, Colorado State University
9:40 AM
9:50 AM
 Soil moisture deficit drives proteolytic enzyme activity in a consistent way at the site-level and across a network of global change experiments
Edward R. Brzostek, Indiana University; Jennifer Swilik, Indiana University; Adrien C. Finzi, Boston University; Richard P. Phillips, Indiana University
10:10 AM
 Understanding an iconic landscape through comparative international long-term ecological research
Tiffany G. Troxler, Florida International University; Evelyn Gaiser, Florida International University
10:30 AM
 Impacts of global change on grassland ecosystems: Generalized responses revealed by collaborative network science
Eric M. Lind, University of Minnesota; Carly J. Stevens, Lancaster University; Elizabeth T. Borer, University of Minnesota; Eric W. Seabloom, University of Minnesota; Nutrient Network, Multiple Institutions
10:50 AM
 Insights from an European climate change network
Claus Beier, Norwegian Institute of Water Research