Oddvar Skre

TL;DR: In this article, it has been shown that transplantation of coniferous tree provenances between southern and northern latitudes has a considerable impact on both phenology and productivity of the trees (Hagem 1931; Kalela 1938; Heikinheimo 1949; Magnesen 1992; Beuker 1994).

TL;DR: In alpine and arctic areas, where climate regularly changes between cold winters and warm growing seasons, plants have evolved different survival strategies as mentioned in this paper, and plants that tolerate freezing and drying stress have an advantage over plants that have not evolved resistance to extreme cold and drought.

TL;DR: In this article, the authors show that increased winter temperatures would tend to increase the risk of spring frost damage and reduce growth in mountain birch seedlings, because the differences between the frost hardening and ambient temperatures are decreasing, and because the time from budbreak to dehardening is shortened.

TL;DR: In the southern population added nutrients seemed to increase photosynthesis and growth rates, as well as the CO 2 responses, but the nutrient effect on photosynthesis in plant grown at high CO 2 levels was strongest in plants from the two northern populations.