TY - JOUR AU1 - Norby, Richard J. AU2 - Rustad, Lindsey E. AU3 - Dukes, Jeffrey S. AU4 - Ojima, Dennis S. AU5 - Parton, William J. AU6 - Del Grosso, Stephen J. AU7 - McMurtrie, Ross E. AU8 - Pepper, David A. AB - Chapter 3 Richard J. Norby · Lindsey E. Rustad · Jeffrey S. Dukes · Dennis S. Ojima · William J. Parton · Stephen J. Del Grosso Ross E. McMurtrie · David A. Pepper affects all biological processes, however, and the net re- 3.1 The Multiple Factor Imperative sponse of an ecosystem to the combined effects of warm- in Global Change Research ing and elevated CO are not so simply described (Norby and Luo 2004). Furthermore, ecosystem responses to CO Increases in atmospheric CO concentration in the com- and temperature are likely to be modified by other envi- ing decades will be accompanied by other global changes. ronmental factors, especially the availabilities of water Higher air temperatures, altered precipitation patterns, and nitrogen, which in turn are modified by CO and increased tropospheric ozone concentrations, and N depo- temperature (Medlyn et al. 2000; McGuire et al. 2001). sition are among the most prominent of the predicted Here, we explore recent experimental approaches to changes that, along with elevated CO , have a high po- understanding ecosystem responses to global change, tential to affect ecosystem structure and function. Al- focusing on approaches that span an increasing range of though the effect of TI - Terrestrial Ecosystems in a Changing World: Ecosystem Responses to Warming and Interacting Global Change Factors DA - 2007-01-01 UR - https://www.deepdyve.com/lp/springer-journals/terrestrial-ecosystems-in-a-changing-world-ecosystem-responses-to-bSQEbAa9Wk DP - DeepDyve ER -