Subscribe free to our newsletters via your
. 24/7 Space News .




ICE WORLD
Grizzly Bears Move Into Polar Bear Habitat In Canada
by Staff Writers
New York NY (SPX) Feb 24, 2010


This is a grizzly Bear (Ursus arctos), photographed in Wapusk National Park, Manitoba, Canada, on August 9, 2008. Credit: Linda Gormezano

Biologists affiliated with the American Museum of Natural History and City College of the City University of New York have found that grizzly bears are roaming into what was traditionally thought of as polar bear habitat-and into the Canadian province of Manitoba, where they are officially listed as extirpated.

The preliminary data was recently published in Canadian Field Naturalist and shows that sightings of Ursus arctos horribilis in Canada's Wapusk National Park are recent and appear to be increasing in frequency.

"Grizzly bears are a new guy on the scene, competition and a potential predator for the polar bears that live in this area," says Robert F. Rockwell, a research associate at the Museum and a professor of Biology at CUNY.

"The first time we saw a grizzly we were flying over the middle of Wapusk, counting fox dens, when all of the sudden Linda Gormezano, a graduate student working with Rockwell and a co-author of the paper, shouted 'Over there, over there-a grizzly bear.' And it wasn't a dirty polar bear or a moose-we saw the hump."

That sighting in August 2008 spurred Rockwell and Gormezano to look through records to get a better picture of the bear population in the park. There was no evidence of grizzly bears before 1996, not even in the trapping data from centuries of Hudson Bay Company operation. But between 1996 and 2008 the team found nine confirmed sightings of grizzly bears, and in the summer of 2009 there were three additional observations.

"The opportunistic sightings seem to be increasing," says Gormezano. "This is worrying for the polar bears because grizzly bears would likely hibernate in polar bear maternity denning habitat. They would come out of hibernation at the same time and can kill polar cubs."

Before this study, researchers thought that the barren landscape north of the Hudson Bay was an impassable gap in resources for potentially migrating grizzly bears. But some U. arctos horribilis have managed to move from their historic ranges in the Rockies, the Yukon, and Nunavut, probably because of their flexible, mixed diet of berries and meat.

The potential gap was navigable, and now some grizzly bears have reached the abundant caribou, moose, fish, and berries found to the south in Canada's Wapusk National Park.

"Although we don't yet know if they are wandering or staying-the proof will come from an observed den or cubs-these animals will eventually be residents of this national park," says Rockwell. "The Cree elders we talked to feel that now that grizzly bears have found this food source they will be staying."

"A big question is how to deal with these new residents," continues Gormezano. "In Canada, both the polar and grizzly bear are federally listed as species of special concern. In Manitoba, the polar bear is provincially listed as threatened while the prairie population of the grizzly bear is listed as extirpated."

In addition to Rockwell and Gormezano, this paper was authored by Daryll Hedman of Manitoba Conservation in Canada. This research was supported in part by the Hudson Bay Project.

.


Related Links
American Museum Of Natural History
Beyond the Ice Age






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





ICE WORLD
German army evacuates tourists from ice-locked island
Berlin (AFP) Feb 3, 2010
The German army evacuated by helicopter some hundred tourists Wednesday stranded on an ice-locked German island in the Batic sea, a tourist official told AFP. Ferries had been unable to reach Hiddensee island since Friday, after ice-breakers failed twice to crack ice that was 40 centimetres (15.7 inches) thick in some areas. The 112 tourists and six dogs were flown to the neighbouring is ... read more


ICE WORLD
US lunar pull-out leaves China shooting for moon

Astronomers Say Presence Of Water On Moon Will Lead To More Missions

Moon Exploration is Not Dead

Seed Bank For The Moon

ICE WORLD
Spirit Hunkers Down For Winter

Enhanced 3D Model Of Mars Crater Edge Shows Ups And Downs

Two Windows On Ozone: Extending Our View Of The Martian Atmosphere

Spirit Parks For The Winter

ICE WORLD
NASA Increases Support Contract To Mid-Atlantic Regional Spaceport

Northrop Grumman Foundation Weightless Flights Of Discovery

SwRI Announces Pioneering Program To Fly Next-Gen Suborbital Experiments With Crew

US committed to space: Obama tells astronauts

ICE WORLD
UK's First China Space Race Exhibition Launched

No Spacewalk From Tiangong-1

China's Mystery Spacelab

China launches orbiter for navigation system: state media

ICE WORLD
Endeavour Home After Completing A Special Delivery To ISS

Endeavour Crew Delivered Last Major US Portion Of ISS

Endeavour astronauts prepare to unveil room with cosmic view

Astronauts Move Cupola

ICE WORLD
Payload Prep Underway For Arianespace's First Launch Of 2010

EchoStar XIV Satellite Delivered To Launch Base

Cool Movie: SDO Destroys A Sundog

Concrete Phase Of Runway Begins At Spaceport America

ICE WORLD
Seeing ExoPlanet Atmospheres From The Ground

New Technique For Detecting Earth-Like Planets

New technique helps search for another Earth

NASA's Rosetta "Alice" Spectrometer Reveals Earth's UV Fingerprint

ICE WORLD
Ultra-Fast Lasers To Open Doors To New Technologies

Quantum Leap For Phonon Lasers

A Stellar, Metal-Free Way To Make Carbon Nanotubes

Meteosat Third Generation Takes A Step Forward




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement