Shrub expansion in the low Arctic: The influence of snow and vegetation feedbacks on nitrogen cycling

• Main Author: Vankoughnett, Mathew
• Other Authors: Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))
• Format: Thesis
• Language: English
• Published: 2009
• Subjects: Arctic; shrub expansion; snow-shrub feedback hypothesis; 15N; Betula; nitrogen; winter processes; Daring Lake; Climate change; Tundra
• Online Access: http://hdl.handle.net/1974/5167

Climate change has coincided with expansion of deciduous shrub species in the Arctic. Increased deciduous vegetation in the tundra could have profound implications on regional climate, carbon balance, and biogeochemical cycling of nutrients. Winter biological processes may be a mechanism explaining...