OOS 27 - Ecology of a Rapidly Changing Arctic

Wednesday, August 9, 2017: 1:30 PM-5:00 PM
Portland Blrm 255, Oregon Convention Center
Organizer:
Jessica V Trout-Haney, Dartmouth College
Co-organizers:
Lauren Culler, Dartmouth College; and Christine Urbanowicz, Dartmouth College
Moderator:
Jessica V Trout-Haney, Dartmouth College
Arctic ecosystems are characterized by persistent low temperatures, permanently frozen ground, and short growing seasons, properties which exert significant constraints on ecological dynamics. Arctic regions are also experiencing more rapid warming compared with lower latitudes, and as such, these ecosystems are among the most sensitive and susceptible to changes in climate and disturbance. Scientists have been documenting changes in ecological dynamics, including shifts in species distributions and community structures, altered phenology of organisms, physiological changes or adaptations, and ecosystem-scale processes all across the Arctic. These changes vary among habitats, organisms, geography, spatial and temporal scales. In addition, many species in the Arctic are important for subsistence activities such as hunting and fishing, thus documenting and anticipating changes to these ecosystems has great relevance to northern societies. These topics form the basis of this symposium, which will highlight recent advances in our understanding of arctic systems as well as the ecology of rapid environmental change. Speakers in this session will represent a diversity of questions, study organisms, habitats, and geographical focus, which will facilitate a synthesis of knowledge and improved and coordinated efforts for anticipating arctic change.
1:30 PM
 Arctic green wave dynamicity and its implications for migration phenology
Christian John, Penn State University; Eric Post, University of California Davis
1:50 PM
 Recovery and recoupling of above- and belowground food webs after an unprecedented Arctic wildfire
Yamina Pressler, Colorado State University; Amanda M. Koltz, Washington University in St. Louis; Ashley L. Asmus, University of Texas Arlington; Rodney T. Simpson, Colorado State University; Laura Gough, Towson University; Gaius R. Shaver, Marine Biological Laboratory; John C. Moore, Colorado State University
2:50 PM
 Avian phenology in a changing Arctic: Implications for reproduction and migration
Helen E. Chmura, University of California, Davis; Jesse S. Krause, University of California, Davis; Jonathan H. PĂ©rez, University of California, Davis; Ashley L. Asmus, University of Texas Arlington; Shannan K. Sweet, Lamont-Doherty Earth Observatory, Columbia University; Natalie Boelman, Lamont-Doherty Earth Observatory, Columbia University; Laura Gough, Towson University; Marilyn Ramenofsky, University of California, Davis; John C. Wingfield, University of California, Davis
3:10 PM
3:20 PM
 Declining growth of arctic shrubs in the warming climate of continental west Greenland
Cassandra Gamm, University of Alaska Anchorage; Patrick Sullivan, University of Alaska Anchorage; Roman Dial, Alaska Pacific University; Agata Buchwal, Adam Mickiewicz University; Amanda B. Young, Pennsylvania State University; David A. Watts, The Pennsylvania State University; Sean M.P. Cahoon, USDA Forest Service; Jeffrey M. Welker, University of Alaska Anchorage; David M. Eissenstat, Pennsylvania State University; Eric Post, University of California Davis
3:40 PM
 Bottom-up effects of experimental nutrient addition on arthropod assemblages in arctic tundra mediated by plant traits
Ashley L. Asmus, University of Texas Arlington; Amanda M. Koltz, Washington University in St. Louis; Jennie R. McLaren, University of Texas at El Paso; Gaius R. Shaver, Marine Biological Laboratory; Laura Gough, University of Texas at Arlington
4:00 PM
 Altered aquatic-terrestrial linkages and biogeochemical consequences of rapid climate change in southwestern Greenland
Robert M. Northington, University of Maine; Jasmine E. Saros, University of Maine; Benjamin Burpee, University of Maine; Rachel A. Fowler, University of Maine
4:20 PM
 Transfer of cyanotoxins in Greenlandic lake and riparian food webs
Jessica V Trout-Haney, Dartmouth College; Kathryn L. Cottingham, Dartmouth