Tag: "arctic" at biology news
Climate change could doom Alaska's tundra
...lso supports brown bear, wolf, wolverine, caribou, arctic
hare, mink, weasel, and lemming, and millions of migrating waterfowl. In summer it can feature thousands of lakes and large marshy areas. According to Bachelet, despite some of the criticisms aimed at them, climate models appear to work better ...
DNA tests point to extinction of 2 distinctive arctic bird populations
...d Wildlife in Canada (COSEWIC) to add a well-known arctic
bird to Canada's list of species at risk. Two popu...d Vickie Friesen. Although not endangered in other arctic
regions, the rock ptarmigan populations identified in this study are definitely at risk, say the res...
Society for conservation biology conference
...comparing the species composition of different low arctic
ecosystems along the site of a recent and 33-year-old seismic exploration. Their results suggest that different communities respond uniquely to the disturbance and that complete recovery of natural vegetation communities is unlikely in some cases. ...
Digital evolution reveals the many ways to get to diversity
...ts that are harsh and short on resources like the arctic
tundra or a desert have comparatively little species diversity, not surprisingly perhaps. Unexpectedly, however, some natural environments that have a lot of resources support fewer species than environments that have more modest productivity, a sur...
Tips from the Journals of the American Society for Microbiology
... Alaska Fairbanks have found bacterial activity in arctic
wintertime sea ice and may attribute its survival ... drawn from melted ice. In this study, samples of arctic
sea ice were collected from Alaska during winter months and maintained at subzero temperatures while...
Researchers publish Circumpolar Arctic Vegetation Map
... the region north of the Arctic tree line, with an arctic
flora, and tundra vegetation. The map can be viewed on the Web at http://www.geobotany.uaf.edu/cavm...
It's feast or famine: Predators may drive lemming cycles, Science researchers say
...vertebrate predator-prey relationships. The stoat, arctic
fox, snowy owl, and a seabird called the long-tailed skua all dine on this hamster-like animal. Scientists now suggest that these four predators may be solely responsible for the four-year population cycle in eastern Greenland and possibly in many ot...
How many fish in the sea? Census of Marine Life launches first report
... technology discovered and filmed large schools of arctic
cod between the layers of pack ice. Normally bottom feeders, these cod were filmed grazing on upside-down algal pastures. This surprising find encourages further exploration under the ice. The Microscopic Microorganisms in the oceans make up for th...
Destination Deadhorse...and beyond
... elements they carry. One project will examine the arctic
atmosphere to measure mercury levels to understand the controls of sea ice over atmospheric mercury deposition. This will contribute to our understanding of "Arctic haze" (believed to be composed of industrial pollution from lower latitudes) and the ...
Alaska oil and gas exploration good and bad for area life
... control food stuffs, more predators (brown bears, arctic
foxes, ravens, etc.) have been observed. As a result, some bird and mammal species have been negatively impacted.Kennicutt said the committee attempted to predict future accumulations of effects based on realistic scenarios of oil and gas development...
Squirrels' evolutionary 'family tree' reveals major influence of climate, geology
...round squirrels can live in treeless habitats like arctic
meadows," Mercer added. Before about 3 million years ago, South America was an isolated island continent with no fossil records of squirrels, Roth said. Then complex geological shifts created a land bridge at what is now the Isthmus of Panama. The Du...
There's no business like snow business
...ace of ice helps scientists explain the origins of arctic
"rock circles" and lightning. The research that led to an understanding of ice's watery surface layer also applies to condensed matter in general. From double black diamonds to quantum mechanics and pollution, snow and ice will keep scientists and th...
UAF Institute of Arctic Biology researcher featured in Science
...hen he studied soil development in Spitsbergen, an arctic
archipelago north of Norway. Since then Mann has worked on several projects involving patterned ground in northern Alaska, Antarctica and in mountain ranges in the western U.S. Mann's interest in patterned ground derives from the fact that it is an e...
Once big bad wolf, now man's best friend: Science studies trace dogs' origins
...mples taken from dogs in Asia, Europe, Africa, and arctic
America. They found that, while most dogs shared a common gene pool, genetic diversity was highest in East Asia, suggesting that dogs had been domesticated there the longest. Previously, researchers had generally looked to the Middle East as the sett...
Tiny plant may yield big environment, energy payoffs
...ion from solar damage -- and is found in alpine or arctic
regions. These red algae create a phenomenon referred to as "red snow." The organism's global dispersion demonstrates the algae's adaptive nature, says Stern. "Chlamydomonas is a relatively simple organism and easy to work with," says Stern. "One d...
Rutgers helping Finns explore arctic microbes
...verse, sturdy bacterial strains found in Finland's arctic
region. Microbiologists suspect arctic
Finland, a cold land of boreal forests and stark mountain tundra with long, dark winters, heavy snow...
First global-scale assessment of biodiversity beneath our feet
...opical to boreal forests, and from to savannahs to arctic
tundra. Over the next two months they will retrieve a subset of these bags for analysis of global patterns of decomposition and the species involved. The Chair of GLIDE, Dr. Diana Wall of Colorado State University, USA, expects the study to signific...
Horseshoe Crab Research Center provides information to improve management
...rseshoe crab eggs to fuel their migration to their arctic
breeding grounds each year. The battle over this ecologically, economically, and medically essential species has become one of the most heated environmental issues on the east coast in recent years." Participating in the dedication were officials fr...
Climate change in the USA
...of many wetland plant species. "Climate change and arctic
ecosystems," will be reviewed by Edward Rastetter ...y. Since the 1970's the annual temperature of the arctic
has risen by 2oC, and this number is expected to rise by another 10oC by 2100. These changing condit...
UAF part of university without walls
...studies curriculum. UAF has an interdisciplinary arctic
science team working on this project. The launch ...n conjunction with the 10 th anniversary of the arctic
environmental declaration of the eight circumpolar countries, otherwise known as the Arctic Enviro...