Posted on February 19, 2015 by Bob Berwyn
Map of the northern US Atlantic margin showing the locations of newly-discovered methane seeps mapped by researchers from Mississippi State University, the US Geological Survey, and other partners.
Detailed mapping can help plan climate change adaptation
FRISCO — Huge wildfires have driven the conversion of Alaska forests to grass- and shrublands, and the state’s perennial ice and snow fields, as well as its vast wetlands are also shrinking, according to the U.S. Geological Survey.
The changing face of Alaska is revealed in a new land-cover data set, which provides detailed information useful to land use planners and decision-makers. Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: Alaska, climate change, global warming, land cover maps, water, wetlands | Leave a comment »
Posted on October 30, 2014 by Bob Berwyn
New oil and gas drilling set to start in National Petroleum Reserve. Map courtesy BLM.
Conservation groups say new road will hammer wetlands, tundra and wildlife
FRISCO — A new Bureau of Land Management plan for fossil fuel exploitation in Alaska has spurred criticism from environment groups, who say that a road included in the proposal will permanently damage the Western Arctic’s sensitive wetlands and tundra, with impacts to wildlife and subsistence values.
The BLM plan covers the Greater Mooses Tooth Unit 1 project in the 23 million acre National Petroleum Reserve-Alaska, also known as the Western Arctic Reserve, more than half of which is potentially open to oil and gas leasing. Conservation advocates are calling for more careful study of drilling impacts to ensure that the wildlife, subsistence and wilderness character of our nation’s largest parcel of public land are balanced with energy development. Continue reading
Filed under: energy, Environment, fracking, gas drilling, oil drilling | Tagged: Alaska, BLM, Bureau of Land management, Environment, Mooses Tooth Unit 1, National Petroleum Reserve, public lands | 1 Comment »
Posted on August 5, 2014 by Bob Berwyn
Alaska caribou. Courtesy USGS.
Shifts in wildlife populations will affect Native American communities
FRISCO — Some big caribou herds in Alaska could lose more than 20 percent of their habitat as growing wildfires destroy critical foraging areas. Those changes will likely affect generations of Native American families whose existence is spiritually linked with the Arctic ungulates, researchers with the U.S. Geological Survey reported in a new study.
Rapidly warming Arctic temperatures are to blame — global warming increases the flammability of lichen-producing boreal forests, which are important winter habitat for caribou herds. Continue reading
Filed under: biodiversity, climate and weather, Environment, global warming, wildlife | Tagged: Alaska, caribou, global warming, wildlife | Leave a comment »
Posted on August 1, 2014 by Bob Berwyn
Important crab fisheries to suffer as oceans turn warm and acidiic
Crabs are among the many commercially important species that will struggle as oceans grow warmer and more acidic. bberwyn photo.
FRISCO —Alaska’s economically important crab fishery and other coastal and ocean resources face significant global warming threats, according to a new study led by scientists with the National Oceanic and Atmospheric Administration. The research findings, to be published online in the journal Progress in Oceanography, show that many of Alaska’s nutritionally and economically valuable marine fisheries are located in waters that are already experiencing ocean acidification.
Communities in southeast and southwest Alaska face the highest risk from ocean acidification because they rely heavily on fisheries that are expected to be most affected by ocean acidification. Some of those Native American communities are also more vulnerable to economic risks because of lower average incomes and fewer employment opportunities, NOAA said in a press release. Continue reading
Filed under: climate and weather, global warming, ocean acidification | Tagged: Alaska, crab fishing, Environment, global warming, ocean acidification | 2 Comments »
Posted on July 18, 2014 by Bob Berwyn
Agency likely to restrict mining activities based on concerns about impacts to salmon fishery, other resources
Proposed Alaska mine gets careful EPA scrutiny.
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FRISCO — A proposed mine in coastal Alaskan waters would spread across an area larger than Manhattan and jeopardize the health and sustainability of one of the world’s great salmon fisheries, the EPA said this week, releasing a draft version of its plan for protecting aquatic resources in Bristol Bay from a vast open pit mine.
According to the EPA, the proposed mine in its present form would have unacceptable impacts on Bristol Bay natural resources. As a result, the agency’s draft lays out common sense rules and guidelines that would ensure the integrity of those resources by prohibiting the discharge of any mining materials into critically important waters of the U.S. Continue reading
Filed under: biodiversity, Environment | Tagged: Alaska, Bristol Bay mine, Environment, EPA, salmon | Leave a comment »
Posted on July 13, 2014 by Bob Berwyn
Wolves draw tourists to Denali National Park.
Death of breeding wolves affects pack size and persistence
FRISCO — Following a steep drop in the Denali National Park wolf population, biologists have documented how the death of breeding wolves affects pack size and persistence. The number of wolves in the 6million acre park in Alaska dropped from 143 in the fall of 2007 to just 55 wolves in the spring of 2013, raising concerns about impacts to tourism.
Many visitors come to Denali with the expectation of seeing wolves, but a recent state decision to allow wolf hunting in area previously deemed a buffer zone has had a big impact on wolf numbers. According to the latest research, the death of a breeding wolf sometimes results in a wolfpack disbanding. Continue reading
Filed under: biodiversity, Democracy, national parks, wildlife | Tagged: Alaska, Denali National Park, Environment, wildlife, wolves | 6 Comments »
Posted on March 11, 2014 by Bob Berwyn
A USGS study finds new permafrost forming near Alaska’s Twelvemile Lake.
Small local variations in temperatures eyed as factor
FRISCO — Scientists with the U.S. Geological Survey say they’ve found new patches of permafrost forming in the margins a retreating lake in the interior of Alaska. The findings run counter the conventional wisdom that permafrost will shrink and disappear as the Earth’s climate warms — but don’t jump on the happy train just yet.
The new permafrost patches are small and suggest that the areas of frozen soil are sensitive to small temperature variations and other local factors, the USGS-led study suggests. Especially important is emerging vegetation around the edge of the lake. Thick willows shade the ground to the point that the soil can freeze, the scientists said. Continue reading
Filed under: Arctic, climate and weather, global warming | Tagged: Alaska, climate change, Environment, permafrost, USGS | Leave a comment »