Canada nature
Articles in ‘Canada nature’
September 17th, 2009
Polar bears are coming into increasingly conflict with humans as melting ice is pushing them to search for food on land. “Hungry bears don’t just lie down – they go looking for an alternate food source,” says zoologist Ian Stirling at the University of Alberta in Edmonton, Canada. “In many cases this brings them into human settlements and hunting camps.” The team found that the number of bears reported as attacking humans, homes and hunting camps in Churchill on the shores of Hudson more than tripled between 1970 and 2005, from 20 to 90 per year, despite a 20% fall in the bear’s population since 1980. The researchers note that shorter the sea ice season, the greater the reports of problem bear activity.
New Scientist
I’m sure this is true, but I wonder if humans are also occupying more and more territory and so increasing the amount of potential contact…
Canada nature, Climate change, North America nature | Tags: Polar and climate change, Polar bears, Polar bears in Canada, Polar bears in Churchill|
September 11th, 2009
A review article in this week’s
Science on the impact of climate change on the Arctic notes that ecosystems are changing fast, and that could portend more shifts in other parts of the world. The authors list numerous examples. Ringed seal pups in the Canadian Arctic have lost birth lairs to early spring melts, while warmer winters have allowed reindeer in Norway to thrive. Arctic fox populations are dropping as red foxes move north. And caribou calving has fallen out of sync with peak plant growth in Greenland, possibly explaining why calf survival has declined.
More here
Arctic nature and wildlife, Canada nature, Norway nature | Tags: Arctic fox, Arctic fox competing with red fox, Arctic fox populations, Canadian Arctic, Greenland plants|
September 11th, 2009
Worrying news from Canada’s West coast. Grizzily bears seem to be disappearing probably starving to death because of the massive drop in salmon numbers this year. We may be witnessing the collapse of an entire and until recently pristine ecosysem.
Treehugger
The Globe and Mail writes: “Reports from conservationists, salmon-stream walkers and ecotourism guides all along British Columbia’s wild central coast indicate a collapse of salmon runs has triggered widespread death from starvation of black and grizzly bears. Those guides are on the front lines of what they say is an unfolding ecological disaster that is so new that it has not been documented by biologists.”
Canada nature, North America nature | Tags: British Columbia bears, Grizzily bears in Canada|
August 20th, 2009
Desert tortoise by Tigerhawkvok
- The U.S. Army wants to expand training operations in the Mojave Desert, and to do so is requesting the transfer of more than 1000 endangered desert tortoises. “The Army relocated more than 600 of the animals last year but suspended the $8.7-million program after the first phase when officials noted high mortality rates among the tortoises, chiefly because of coyotes.” LA Times
- California to further restrict coastal fishing to help marine ecosystems. Conservationists see it as a chance to create a network of underwater state parks, while fishermen said it would threaten their businesses in a time of economic hardship.
- A recent study by the U.S Geological Survey has found a 24% decline in the number of large-diameter trees in Yellowstone National Park, causing significant changes in the habitats for many species. It may be due to warmer, drier conditions.
- The National Oceanic and Atmospheric Administration must notify a federal court next month whether it will do what is necessary to save endangered salmon in the Pacific Northwest. The decision will tell us a lot about how the administration sees its obligations under the Endangered Species Act. The Bush team evaded its responsibilities with amazing acts of legal casuistry. New York Times editorial
- The Fraser River, on Canada’s West Coast, used to serve as a spawning ground to about 10.6 million sockeye salmon every summer. But worryingly, the latest estimate puts the number of salmon to fewer than 1 million this year.
- Idaho plans to kill 25% of wolf population The Idaho Fish and Game Commission has approved a plan that would allow hunters to shoot up to 220 wolves — a quarter of the state’s population.
- Black bears find new territory in cities, on roads – Black bears are multiplying and on the move across North America, snooping around cities where they’ve been a rarity, becoming roadkill and leading states to start or expand hunting seasons.
Canada nature, United States nature | Tags: Desert tortoises, Idaho wolves, Mojave Desert, Yellowstone|
August 7th, 2009
Photo: NPS/Peaco
A quick round of the latest news affecting wildlife and nature in North America. I picked up the idea from this site.
- Climate change could result in the catastrophic loss of wildlife in US’s National Parks. Service is called on to create a system to manage animals and plants. A new report calls on federal government to take decisive action to avoid “a potentially catastrophic loss of animal and plant life” in national parks” LA Times See also Yellowstone’s grizzly bears and other wildlife at risk from climate change “In Yellowstone, a tiny beetle may decide the fate of the kingly grizzly bear. Whitebark pine nuts provide a valuable food source for the bears. A beetle that destroys the whitebark pine tree has gained a considerable foothold in Yellowstone because of the effects of climate change. In some parts of the Greater Yellowstone ecosystem, beetles have destroyed up to 90 percent of the trees in whitebark pine forests. Removing this important component of the grizzly bears’ diet puts considerable stress on the species that could ultimately lead to extinction.”
- A report by the US geological survey indicates a steep rise in the melt rate of American glaciers over the last 10-15 years. The study looks at three “benchmark” glaciers- Wolverine and Gulkana in Alaska and South Cascade in Washington – as representative of thousands of other glaciers in North America. The Guardian
- Scientists In Alaska spot a bar-tailed godwit tagged in Australia near Victoria – more than 8,000 miles away.
- Pollution is icreasing in US beaches according to this article.
- A coalition of environmental groups is attempting to intervene in a lawsuit from snowmobilers challenging critical habitat designations for the Canada lynx. Here
- King salmon runs in Alaska have been closed this year as fewer fish have returned from the ocean. The decline could be down to changes in river conditions, ocean currents or the predator-prey balance.
- More bobcats sighted in Seattle area First it was bears, now it’s bobcats that seem to be popping up in Western Washington urban areas.
- Coyotes struggle as mange spreads “Every night it used to be quite a serenade,Rocky Hoffmann at the Nebraska Game and Parks office in North Platte said. But we’ve had a tremendous mange problem throughout the state, and the numbers are down”
- Sea Otter Population Rebounds in US Northwest The population began to recover in 1969, with a couple dozen survivors from a reintroduction effort. Today, there are well over 1,000 sea otters in the Pacific waters off Oregon, Washington and British Columbia.
- Rare wolverine spotted in the Pioneers
Canada nature, United States nature | Tags: Alaska bar-tailed godwit, Alaska wildlife, Bar-tailed godwit in Alsaka, Coyote mange, King salmon runs in Alaska, melt rate of American glaciers, Whitebark pine beetle, Whitebark pine nuts, Wildlife news about North America, Yellowstone|
