Ecological Adaptions In Douglas Fir Populations
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Ecological Adaptations in Douglas-fir Populations
Author | : G. E. Rehfeldt |
Publisher | : |
Total Pages | : 8 |
Release | : 1982 |
Genre | : Douglas fir |
ISBN | : |
Populations of Douglas-fir (Pseudotsuga menziesii var. glauca) from Montana west of the Continental Divide were compared in common environments. Differentiation was observed for six variables reflecting growth potential, phenology and cold hardiness. Adaptation of populations for numerous traits is viewed as a balance between selection of high growth potential in relatively mild environments and selection for cold hardiness in severe environments. Adaptive variation is described according to two physiographic zones, elevation within each zone, and latitude within zones.
ECOLOGICAL ADAPTATIONS IN DOUGLAS-FIR POPULATIONS,
Author | : GERALD E. REHFELDT |
Publisher | : |
Total Pages | : 0 |
Release | : 2022 |
Genre | : |
ISBN | : 9780364218471 |
Douglas Fir
Author | : Stephen F. Arno |
Publisher | : Mountaineers Books |
Total Pages | : 249 |
Release | : 2020-10-01 |
Genre | : Nature |
ISBN | : 1680512005 |
Westerners familiar with their forests may think they know the Douglas fir--but how well do they? Douglas firs are found in the continental northwest from British Columbia to as far south as Oaxaca, Mexico. They flourish in the Cascades, Rocky Mountains, Sierra, and other mountain ranges, as well as in desert valleys. Incredibly hardy, this tree adopts various strategies to occupy more kinds of habitats than any other native tree, even becoming an uncontrollable invader in some regions, crowding out ponderosa pines, western larch, aspen groves, and mountain grasslands. Yet the utility of this noble species is immense. Douglas firs yield more high-quality construction lumber than any other tree in the world. Most intriguing of all, perhaps, is that the story of the Douglas fir has gone untold. Douglas Fir fills this literary gap and presents an engaging profile of the Douglas fir and its relationship to people, commerce, culture, and wilderness.