U.P. article on "Forests Could Benefit When Fall Color Comes Late"
- Although I don't dispute that later Fall colors may be a result of
increasing CO2, it's wrong to say that "Basically, this is a good-news
story for our region's forests," as Karnosky said for the U.P.
hardwoods, according to the article.
Excerpt:Writing in the current issue of the journal Global Change
Biology, Michigan Technological University Professor David F. Karnosky
and colleagues from two continents present evidence that rising carbon
dioxide levels in the atmosphere act directly to delay the usual
autumn spectacle of changing colors and falling leaves in northern
"Basically, this is a good-news story for our region's forests," said
Karnosky. "It suggests that they will become a bit more productive due
to the extra carbon being taken up in the autumn, along with the
increased photosynthesis throughout the growing season."