By ANNA M. TINSLEY As the hot days in Texas get even hotter, it may just be too much for some birds and fish. From the American goldfinch to the gray snapper, some species have been moving north for years, searching for cooler ground. And their quest may someday lead them to migrate out of […]
Features formed by melting permafrost provide clues to a changing Arctic landscape and climate By Lisa Jarvis There is a profound quietude north of Alaska’s Brooks Range, the string of mountains separating the boreal forest from the Arctic tundra. Traveling along the Dalton Highway, the one road to the Arctic Ocean, one sees little visible […]
By Mead Gruver, Associated Press Writer Cheyenne, Wyo. » Glaciers on the iconic Teton Range are shrinking, researchers say, joining a growing list of glaciers in North America and beyond that are losing their surface area and potentially reducing the water supply for nearby regions. Two of the Tetons’ biggest glaciers have lost more than […]
(University of Virginia) Massive burning of forests for agriculture thousands of years ago may have increased atmospheric carbon dioxide enough to alter global climate and usher in a warming trend that continues today, according to a new study that appears online Aug. 17 in the journal Quaternary Science Reviews. Researchers at the University of Virginia […]
By Nora Schultz You may have thought that the silver lining of rising carbon dioxide levels would be a boost in crop yields. But evidence is mounting that we may trade quantity for quality. The discovery that staple crops like wheat have less protein when grown in high concentrations of CO2 has already caused concern, […]
The warming of an Arctic current over the last 30 years has triggered the release of methane, a potent greenhouse gas, from methane hydrate stored in the sediment beneath the seabed. Scientists at the National Oceanography Centre Southampton working in collaboration with researchers from the University of Birmingham, Royal Holloway London and IFM-Geomar in Germany […]
The same things that make Alaska’s marine waters among the most productive in the world may also make them the most vulnerable to ocean acidification. According to new findings by a University of Alaska Fairbanks scientist, Alaska’s oceans are becoming increasingly acidic, which could damage Alaska’s king crab and salmon fisheries. This spring, chemical oceanographer […]
ScienceDaily (Aug. 14, 2009) — A rare April freeze in 2007 provided researchers with further evidence that climate change could have negative effects on stream and forest ecosystems. As warm weather arrives sooner in many parts of the nation, forest plants and trees on the banks flourish, shading the stream from sunlight and causing an […]
By Rod Nickel WINNIPEG, Manitoba (Reuters) – Millions of sockeye salmon have disappeared mysteriously from a river on Canada’s Pacific Coast that was once known as the world’s most fertile spawning ground for sockeye. Up to 10.6 million bright-red sockeye salmon were expected to return to spawn this summer on the Fraser River, which empties […]
Boreal forests in some of the world’s wealthiest countries are being rapidly destroyed by human activities — including mining, logging, and purposely-set fires — report researchers writing in Trends in Ecology and Evolution. Assessing the status of the boreal forest that stretches across Alaska, Canada, Scandinavia, and Russia, Corey Bradshaw and colleagues found that less […]
