It found that a tree’s growth rate increases with its size, in some cases adding the mass of a small tree every year.
That has huge implications for the amount of carbon dioxide an older tree can absorb.
“One of the analogies I use is if you’re managing a sports team, you’ve got to know who your star players are." says forest ecologist Nathan Stephenson with the USGS, and the study’s lead author.
"This would be the equivalent of discovering that your 90-year-old players are the stars of the team," he says.
A new study says its cheaper to reduce forest fuels than fight fires. The problem is where to get the money.
The City of Sacramento declared a drought in January, but city code still requires property owners keep their lawns watered and landscaping maintained.
Hundreds of waterfalls are cascading throughout Yosemite National Park, but they may not last too much longer.
Money generated from California’s cap-and-trade program would go to mass transit, sustainable affordable housing and high speed rail under a proposal by Senate leader Darrell Steinberg. Steinberg is backtracking from his previous proposal.
California and federal agencies have released a plan about how they’ll operate the state and federal water projects during the drought. The plan does not change water allocations.