- 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.
Conversations and observations about California's mountains
September 28, 2009
On October 14, The Sacramento Bee will temporarily remove commenting from sacbee.com. While we design the upgrade, we encourage you to tell us what you like and don't like about commenting on sacbee.com and other websites. We've heard from hundreds of you already and we're listening. Please continue to add your thoughts and questions here. We also encourage you to write Letters to the Editor on this and other topics.