GC22E:
Responses of Alpine and Arctic Treeline Ecotones to Environmental Change I

Tuesday, 16 December 2014: 10:20 AM-12:20 PM
Chairs:  Connie Millar, USDA Forest Service, PSW Research Station, Albany, CA, United States, David M. Cairns, Texas A & M University, Geography, College Station, TX, United States, Matthew J Germino, USGS, Baltimore, MD, United States and Jeremy S Littell, USGS Alaska Science Center, Anchorage, AK, United States
Primary Conveners:  Connie Millar, USDA Forest Service, PSW Research Station, Vallejo, CA, United States
Co-conveners:  David M. Cairns, Texas A & M University, Geography, College Station, TX, United States, Matthew J Germino, US Geologic Survey, Boise, ID, United States and Jeremy S Littell, USGS Alaska Science Center, Anchorage, AK, United States
OSPA Liaisons:  Jeremy S Littell, USGS Alaska Science Center, Anchorage, AK, United States

Abstracts Submitted to this Session:

10:20 AM
GC22E-01
 
Subalpine Species Response to Past Climate Change and Fire Activity: Are We Underestimating the Biotic Resilience?
Cathy L Whitlock, Virginia Iglesias and Teresa Krause, Montana State Univ, Bozeman, MT, United States
10:35 AM
GC22E-02
 
The Role of Topoclimate in Explaining Abrupt Growth Thresholds of Bristlecone Pine in the White Mountains of California, USA
Andrew G Bunn1, Matthew W Salzer2, Evan R Larson3, Stuart B Weiss4 and Malcolm K Hughes2, (1)Western Washington University, Environmental Sciences, Bellingham, WA, United States, (2)University of Arizona, Tucson, AZ, United States, (3)University of Wisconsin Platteville, Platteville, WI, United States, (4)Creekside Center for Earth Observation, Menlo Park, CA, United States
10:50 AM
GC22E-03
 
Patterns of Twentieth Century Treeline Advance in Alaska: Insights from Dendrochronology and Permanent Plot Studies
Andrea H Lloyd and Christopher L. Fastie, Middlebury College, Middlebury, VT, United States
11:05 AM
GC22E-04
 
Do Small Mammals and Vegetation Metacommunity Dynamics Determine the Extent and Pattern of Treeline in the High Elevation Zone of the Sierra Nevada Mountain Range?
Robert Charles Klinger and Jennifer T Chase, US Geological Survey, Bishop, CA, United States
11:20 AM
GC22E-05
 
Seedling establishment at the alpine tree line - Can there be too much winter protection?
Signe Lett1, David Wardle2, Marie-Charlotte Nilsson2 and Ellen Dorrepaal1, (1)Umeå University, Climate Impacts Research Centre, Ecology and Environmental Science, Umeå, Sweden, (2)SLU Swedish University of Agricultural Sciences Umeå, Umeå, Sweden
11:35 AM
GC22E-06
 
Wind-Snow Interactions and Treeline Advance in the Medicine Bow Mountains, Wyoming: A Coupled Examination Using Dendroecology and Remote Sensing
Grant Elliott, University of Missouri Columbia, Columbia, MO, United States and Christopher J Crawford, NASA Goddard Space Flight Center, Washington, DC, United States
11:50 AM
GC22E-07
 
Recruitment of subalpine tree populations sensitive to warming within and above current altitudinal range
Lara M Kueppers1,2, Cristina Castanha1, Andrew B Moyes2, Erin Conlisk3, Matthew J Germino4, Margaret S Torn5, John Harte3 and Jeffry Mitton6, (1)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)University of California Merced, Merced, CA, United States, (3)University of California Berkeley, Berkeley, CA, United States, (4)USGS, Baltimore, MD, United States, (5)Berkeley Lab/UC Berkeley, Berkeley, CA, United States, (6)University of Colorado at Boulder, Boulder, CO, United States
12:05 PM
GC22E-08
 
Reflections on Treeline Studies and Ways to Improve Them.
Bjartmar Sveinbjornsson, University of Alaska Anchorage, Anchorage, AK, United States
 
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