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.
The fish took a ride in a large truck on Wednesday morning and are now headed down the river on a journey to the ocean.
Using this new approach to calculate the snow’s water content also means improved forecasts for farms and cities, and even positive benefits for renewable-energy production. The program soon could go statewide — if it gets funded.
(AP) — Monday's snow survey found a "much rosier" picture than before last week's heavy winter storm, but still less than half the usual snow for this point in the season.
A judge ordered the California Department of Food and Agriculture to stop spraying dozens of pesticides. Some environmental groups count this as a win but a UC Riverside researcher warns the move will hurt efforts to fight a damaging citrus disease.
About 9 in 10 of the produce tested for pesticides at California grocery stores, farmer's markets and other outlets had little or no residue, according to the state Department of Pesticide Regulation's 2016 survey.