Now Archived! PolarConnect Event with Nell Kemp and the Deep Roots Research Team from Alaska on 31 August 2016. You can access this and other events on the PolarConnect Archives site: https://www.polartrec.com/polar-connect/archive
What Are They Doing?
Below the surface of arctic tundra is a matrix of soil, roots, and fungal hyphae that may play a critical role in the trajectory of future climate change. For millennia arctic plants have persisted in cold, wet, and shallow soils underlain with permafrost, permanently frozen ground, in many regions of the Arctic. However, with unprecedented warming in the last century, these plants may see the amelioration of their harsh, belowground environment. With a warming climate, the depths to which permafrost soils thaw each summer increase, potentially providing greater access to drier and more nutrient rich soil resources. Yet, whether arctic plants and their obligate, fungal root-symbionts have the capacity to respond rapidly and exploit soil resources as frozen, high-latitude soils thaw is unknown. Our research investigates the opportunistic capacity of arctic plants and their fungal symbionts to explore a newly available soil environment. Our goal is to uncover the role that the belowground response to a warming world may play in mitigating feedbacks between thawing permafrost and the atmosphere.
Where Are They?
The research is based out of Toolik Field Station, an 8-10 hour drive north from Fairbanks, Alaska. Toolik Field Station is operated by the Institute of Arctic Biology (IAB) at the University of Alaska Fairbanks (UAF) and has hosted hundreds of researchers and students every year since 1975. We will also conduct research at the Eight Mile Lake watershed on the North Slope of the Alaska Range near Healy, Alaska. The Eight Mile Lake site has been affiliated with the Bonanza Creek LTER and IAB at UAF since 2008. From the field station, the team will travel to their sites by foot and truck. The weather near EML and Toolik Lake can be wet, cold, snowy, muddy, buggy, and occasionally sunny and beautiful with spectacular views of the Alaska Range and the Brooks Range, respectively.
Michelle Mack is a professor in the Center for Ecosystem Science and Society at Northern Arizona University in Flagstaff, AZ. She has studied the plants and soils of arctic terrestrial ecosystems for 17 years. Her research focuses on understanding how warming climate is impacting the cycling of carbon and nutrients among plants, microbes, soils and the the atmosphere.
Rebecca Hewitt is a postdoctoral researcher at the Center for Ecosystem Science and Society at Northern Arizona University with Dr. Michelle Mack. Her research investigates the role of plant-fungal interactions on the acquisition of deep nitrogen from thawing permafrost soils, post-fire seedling recruitment at treeline, and landscape patterns of arctic vegetation change. She earned her B.A. in Environmental Studies and Biology from Middlebury College in 2005 and her Ph.D. in Biological Sciences from University of Alaska Fairbanks in 2014.