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Nitrogen uptake by Douglas fir in the Pacific Northwest
SOIL: -high C:N ratio -slightly acidic -nitrogen deficient
NITGROGEN AVAILABILITY : -immobilized in organic matter -available by symbiotic relationships with mycorrhizal fungi
http://66.204.151.69/2001Outwest/PacificNaturalHistory/Projects/LachowskyR/Default.htm
http://www.forestsoils.org/Publications/Chappell-et-al-1991.PDF
ADAPTATIONS to N-DEFICIENCY -N uptake as ammonium -secretion of H+/HCO3- -higher absorption capacity during nutrient flush (luxury consumption) -low growth rate = less N required
geochange.er.usgs.gov/.../biology/veg_chg_model/
DOUGLAS FIR: -Pseudotsuga menziesii -distributed across coastal BC, WA, & OR
Charissa Steel BHO 3800 Plant Environment Systems February 2010 Olds College, Olds, AB
http://fire.biol.wwu.edu/hooper/chapin1980AnnRevEcolSyst_MineralNutritionWildPlants.pdf
