B34B:
Terrestrial and Aquatic Responses to Changing Climate and Disturbance Regimes in Arctic and Sub-Arctic Regions III
B34B:
Terrestrial and Aquatic Responses to Changing Climate and Disturbance Regimes in Arctic and Sub-Arctic Regions III
Terrestrial and Aquatic Responses to Changing Climate and Disturbance Regimes in Arctic and Sub-Arctic Regions III
Session ID#: 8597
Session Description:
High latitude ecosystems are undergoing rapid change as climate warms and alters disturbance regimes, particularly wildfire, permafrost thaw and insect outbreaks. Our understanding of ecosystem responses to these changes is complicated by strong feedbacks between biota and biogeochemical cycling. Remote sensing, change detection, and chronosequence studies are used to study ecosystem function under current and historical disturbance regimes. These approaches often vary between upland, wetland, and lake systems. Across all systems, patterns of interannual and seasonal variation are key knowledge gaps. This is particularly challenging for identifying trajectories of change across the landscape. Presentations are invited using remote sensing, long-term studies, or process-level experiments to improve our understanding of changes in ecosystem structure and function, for example variations in carbon and nutrient cycling, in the north. This session will enable synergies and future collaborations of researchers working across terrestrial and aquatic arctic systems at multiple spatial and temporal scales.
Primary Convener: Marion Syndonia Bret-Harte, University of Alaska Fairbanks, Institute of Arctic Biology, Fairbanks, AK, United States
Conveners: Jeffrey R White, Indiana Univ-Environ Sciences, Bloomington, IN, United States, Merritt R Turetsky, Renewable and Sustainable Energy Institute, Department of Ecology and Evolutionary Biology, Boulder, United States and Thomas A Douglas, Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States
Chairs: Merritt R Turetsky, Renewable and Sustainable Energy Institute, Department of Ecology and Evolutionary Biology, Boulder, United States and Thomas A Douglas, Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States
OSPA Liaison: Merritt R Turetsky, Renewable and Sustainable Energy Institute, Department of Ecology and Evolutionary Biology, Boulder, United States
Cross-Listed:
- C - Cryosphere
- GC - Global Environmental Change
Co-Sponsor(s):
- IGBP: International Geosphere-Biosphere Programme -
Index Terms:
0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0439 Ecosystems, structure and dynamics [BIOGEOSCIENCES]
0475 Permafrost, cryosphere, and high-latitude processes [BIOGEOSCIENCES]
Abstracts Submitted to this Session:
Mobilization of Aquatic Carbon from Permafrost: Tracking the Ancient Carbon Signal. (Invited) (82220)
See more of: Biogeosciences