CARMA workshop Vancouver, Nov , 2006 Wenjun Chen, Ian Olthof, Yu Zhang, Sylvain Leblanc, Ridha Touzi, Junhua Li, Costas Armenakis, Isabel Cyr (Climate Change Program - ESS/NRCan) Contact: Caribou food production in the habitat Vegetation species cover % Leaf Aare Index; Biomass; Green-up date Climate & land use scenarios Caribou carrying capacity of the habitat Ecosystem model Ecotrophic Efficiency; Annual consumption of summer & winter diets by an average caribou; Lichen damage by caribou trampling; Consumption by other wildlife species Caribou herd size Optimal caribou harvest rate Foliage : stem ratio; Foliage turnover rate; Photosynthetic capacity Field measurement + remote sensing + modeling integration Food Availability Land Cover map: Porcupine caribou herd range Land Cover % maps 0% 100% Bare Shrub Grass Conifer Water LUC detection example: Ekati diamond mine 1990, rgb=4,5,3 2000, rgb=4,5,3 Change map Ikonos image Alaska Yukon N.W.T extent of calving annual range Green-up rate (May 1June 21, 1985) 1-km AVHRR Slow Quick Data available: AVHRR since 1979, VGT since 1998 Porcupine caribou herd range Field measurements Aboveground biomass map Changes in permafrost active-layer thickness from the 1850s to the 1990s CSIROM NCAR to the 2090s Perm. disappeared Perm. reappeared Changes in active layer thickness since the 1850s Glacier >50 (cm) Potential response to climate change Commitment Our team is committed to revise and implement work plan according to CARMA partners needs, so that our works will be supportive and complementary to CARMA partners ESS-NRCan, through the Climate Change Program, is committed to provide necessary A-base funding (salary and O&M) for this work over the next 3 years Our team has the full support of ESS-NRCan, through the Climate Change Program, to become a CARMA partner and to fulfill all related responsibilities of a CARMA partner