Genecology and Adaptation of Douglas-Fir to Climate Change. Brad St.Clair 1 , Ken Vance-Borland 2 and Nancy Mandel 1 1 USDA Forest Service, Pacific Northwest Research Station 2 Oregon State University Corvallis, Oregon. Objectives.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Brad St.Clair1, Ken Vance-Borland2 and Nancy Mandel1
1USDA Forest Service, Pacific Northwest Research Station
2Oregon State University
Objective 1: Geographic structure and relationship between genetic variation and climate
Distribution of parent trees and elevation
First component accounted for much of the variation.
First component may be called vigor – correlated with large size
(r=0.65), late bud-set (r=0.94), high shoot:root ratio (r=0.60),
and fast emergence rate (r=0.71).
Dec Minimum Temperature genetic variation and climate
CV 1 for TraitsGeographic genetic variation in first canonical variable for traits
Objective 2: Effects of changing climates on adaptation of current populationsMethods
Present expected to be best adapted to future climate
2095Geographic genetic variation that may be expected to be best adapted to present and future climates
Step 3: Given climate change, determine degree of maladaptation of current population to changed climate as determined by the mismatch between current population and best adapted population to the future climate (risk index as proposed by Campbell 1986)
future environmental complex
Degree of mismatch a function of:
difference = 0.5
additive genetic variance a= 0.52
percentage mismatch = 37 %
Present maladaptation of current population to changed climate as determined by the mismatch between current population and best adapted population to the future climate
2095Maladaptation from climate change
present adaptation of current populations
2095Objective 3. To consider the locations of populations that might be expected to be best adapted to future climates
Focal Point Seed Zones
r = -0.69