Posted on April 9, 2015 by Bob Berwyn
Can northern spotted owls survive in the Pacific Northwest? Photo courtesy USFWS.
Logging and post-fire salvage, along with competion from barred owls, still seen as key threats
FRISCO — Dinged by a double whammy of continued habitat loss and interspecies competition, the Pacific Northwest’s northern spotted owl may get even more protection under the Endangered Species Act.
The U.S. Fish and Wildlife Service this week said it will launch a review to decide if the spotted owl should be reclassified as endangered rather than threatened.
The population of the northern spotted owl is declining across most of the species’ range. The most recent data show a 2.9 percent range-wide population decline per year, although declines as high as 5.9 percent per year have been observed in some areas. Continue reading
Filed under: biodiversity, endangered species, Environment | Tagged: endangered species, logging, northern spotted owl, old growth forests, Pacific Northwest | 3 Comments »
Posted on March 10, 2015 by Bob Berwyn
Marbled murrelet in a moss nest. Courtesy USFWS.
Fifth lawsuit rejected by courts
FRISCO — Marbled murrelets along the Pacific Northwest Coast will continue to benefit from the protection of the Endangered Species Act, as a federal appeals court last week rejected yet another logging industry attempt to open more coastal old-growth forest to logging.
The robin-sized birds feed at sea but nest only in old-growth forests along the Pacific Coast, laying their eggs (one per female) on large, moss-covered branches in old growth Douglas fir, Sitka spruce, western hemlock, and redwood trees. Continue reading
Filed under: biodiversity, endangered species, Environment, Forest health, forests | Tagged: biodiversity, coastal old growth forests, endangered species, Environment, marbled murrelets, Pacific Northwest | Leave a comment »
Posted on February 23, 2015 by Bob Berwyn
Public input wanted: final decision due in 2017
FRISCO — Federal biologists will study whether more critical habitat could benefit an endangered group of killer whales that roams the ocean off the Pacific Northwest, from Puget Sound down to northern California.
Wildlife conservation advocates last year petitioned NOAA’s Marine Fisheries Service, seeking critical habitat designation for the whales’ winter foraging range off the coasts of Washington, Oregon and California. Documents related to the process are compiled here. Continue reading
Filed under: biodiversity, endangered species, Environment, Marine biology, ocean conservation | Tagged: endangered species, killer whales, Orcas, Pacific Northwest, southern resident population | Leave a comment »
Posted on January 12, 2015 by Bob Berwyn
Wave energy could help boost overall renewable energy supplies. bberwyn photo.
Wave energy seen as more reliable than some other renewable energy sources
FRISCO — Energy from ocean waves could fill a big gap in the renewable power grid because it is comparatively steady, dependable and can be integrated into the overall energy grid at lower costs than some other forms of alternative energy, including wind power.
By balancing wave energy production over a larger geographic area, the variability can be even further reduced, a group of researchers reported in the journal Renewable Energy. Continue reading
Filed under: energy, Environment, renewable energy | Tagged: Environment, Pacific Northwest, power grid, renewable energy, wave energy | Leave a comment »
Posted on September 8, 2014 by Bob Berwyn
It’s hard to see what (some_ people don’t understand about this global warming graph.
‘At the rate the temperature is increasing, the next 1.3-degree bump will happen much more quickly’
By Summit Voice
FRISCO — Climate scientists say they’ve been able to tease out the anthropogenic part of a long-term warming trend in the Pacific Northwest, where the annual mean temperature has warmed by about 1.3 degrees Fahrenheit in the past 100 years.
That has lengthened the freeze-free season by two to three weeks and is the equivalent of the snow line moving up 600 feet, said Philip Mote, director of the Oregon Climate Change Research Institute at Oregon State University and a co-author on the study, published in the American Meteorological Society’s Journal of Climate. Continue reading
Filed under: climate and weather, El Niño, global warming | Tagged: climate change, global warming, natural variability, Pacific Northwest | Leave a comment »
Posted on December 1, 2013 by Bob Berwyn
Global warming may be changing westerly winds that drive weather patterns in the mid-latitudes of the northern hemisphere.
Crucial water supplies under the gun from a changing climate
By Summit Voice
FRISCO — Changes in runoff from winter snowpack have been widely documented across the West and most researchers attribute those changes to global warming. But along with the direct impact of warmer temperatures, there may also be a more subtle factor in play.
Recent Forest Service studies on high-elevation climate trends in the Pacific Northwest United States show that streamflow declines tie directly to decreases and changes in winter winds that bring precipitation across the region. The decrease in winter winds may be linked with natural climate variations and man-made climate change.
Other climate research on a larger scale suggests that circumpolar wind speeds may be declining as a result of melting Arctic sea ice — the temperature gradient between the high- and mid-latitudes drives the wind, and that gradient is lessening. Continue reading
Filed under: Arctic, climate and weather, Drought, extreme weather, global warming | Tagged: climate, global warming, Pacific Northwest, snowpack runoff, westerlies | Leave a comment »
Posted on July 23, 2013 by Bob Berwyn
Pacific Northwest researchers document startling increase in number of hot nights during the past few decades
A NASA map shows an area of above-average temperatures hugging the Pacific Northwest coast during the spring of 2013.
By Summit Voice
FRISCO — A trend of more frequent nighttime heatwaves in the Pacific Northwest may not portend killer temperatures and withering crops, but it is another sign that global warming will have a profound effect on regional climate and weather.
Scientists with the Oregon Climate Service at Oregon State University documented 15 examples of “nighttime heat waves” from 1901 through 2009. Ten of them have occurred since 1990 and five were during a four-year period from 2006-09. Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: climate change, global warming, heatwaves, Pacific Northwest | Leave a comment »