The Ice Worm population did seem to struggle with decreased in snowcover on glaciers from 2003 - 2005, bare ice possibly not being as conducive an environment. (nichols.edu)
This may be because of the extremely limited growing season (the basin still has snowcover into July), and its relative isolation from seed sources. (nichols.edu)
The recent forecast for a cool NH spring based on enlarged snowcover is another example. (realclimate.org)