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 collection of environmental, fishing and whitewater groups recommends changes to dam management in a new report, issued in response to the failure of the main spillway at Lake Oroville in February.
Traditional methods to cool cows use 11,000 gallons of water per cow per year. UC Davis researchers are trying out new techniques that use less resources.
Caltrans is worried about the possibility of dead trees falling onto some California highways. The agency has already removed 107,000 trees. Now the agency is getting ready to remove another 54,000 trees, including some on private land.
A federal water bill that supporters say will streamline dam and water storage projects in California faces an uphill battle in the Senate. One of the largest water suppliers in the state says it's unlikely to support it.
Summertime is a favorite for tourists at Lake Tahoe, but the region's transportation system is not designed for the growing number of people who use it. The TRPA and TERC are coming up with a plan to fix the gridlock and improve the lake's clarity.