Evolution on the smallest of scales smooths out the patchwork patterns of where plants and animals live
- Written by Mark C. Urban, Director, Center of Biological Risk; Professor of Ecology and Evolutionary Biology, University of Connecticut
In the Pacific Northwest, even though there are huge variations in environment, the Douglas fir grows everywhere.NASA/NOAA
The Douglas fir is a tall iconic pine tree in Western North America forming a forest that winds unbroken from the Western spine of British Columbia all the way to the Mexican cordillera. The environmental conditions of Canada...