See this report about phenology from the Great Smoky Mountains: http://www.youtube.com/watch?v=Ts7FDt3oqRY&feature=share
If you visit any national parks this summer, you might ask the rangers what changes they have noted over the past several years or decades. And share what you learn!
While not phenology, rangers from the Grand Canyon talk about the increase in pine beetles and express concern about increasing demands for water.
In the Grand Tetons, snow pack was down this year, so many flowers in the sagebrush flats were blooming earlier than usual ,and the elk had dispersed from the lower elevations sooner than usual.
Soon I will be in Alaska where I am sure to hear about receding glaciers in the Kenai Fjords region. Stay tuned.