Natural tree populations spend many generations adapting to their home climate. Climate change is predicted to exceed natural rates of population adaptation causing maladapted populations. Inter-tree competition may compound this, reducing growth and species population survival. This study evaluates 36 natural populations of Juglans nigra distributed across the native range in a common garden experiment. Generalized mixed linear models were developed; predicting tree growth and survival as a function of additive and interactive climate-competition effects.
Combined effects of climate change and competition on tree survival and growth of Juglans nigra natural populations
by Joshua Gershey
Forest Ecosystem Management