Conversations and observations about California's mountains
September 29, 2009
September 28, 2009
- Unusually early spring rains in northern Canada have led to the melting and collapse of birth lairs of ringed seals, leaving pups exposed on bare ice.
- The northward expansion of moths in Scandanavia has led to the severe defoliation of birch forests.
- Shrub species are moving north, too, threatening plant diversity. But so far, grazing by caribou and musk ox - such as this one I saw in Canada's Northwest Territories in 2004 - has slowed the advance.
- Increased melting of winter snows in Norway has led to a rapid increase in reindeer population, through increased fecundity and less starvation. Elsewhere, less snow-cover has been associated with the collapse of small mammal populations, including lemmings.
- Plants are blooming up to 20 days earlier over the past decade in some places.
September 25, 2009
September 8, 2009
Instead, plant what you expect to grow there in the future.Â "We call that assisted migration," he said. "That is something the reasearch community is aimed at trying to help us to do."
Change is inevitable. Â Forests today don't look like they did during the Gold Rush. "We can rest comfortable that the future will be different than today," Landram said.
But the important thing, he said, is to do something.... to plant a tree. "We as a society usually want to focus on the controversy of the day - not on the kind of forest we are going to create for future generations. And we lose focus on what kind of legacy we are leaving the next generation."Â
To read more about Mike and his award from the National Association of Forest Service Retirees, click on this link:Â http://www.fs.fed.us/r5/news/2009/nafsr-fs-award.shtml