Search our collection of background (non-event) articles from news media, science journals and other sources.
Polar bears, black bears, and grizzlies have been found together for the first time during a University of Saskatchewan research project in northern Manitoba.
Several hundred thousand Arctic foxes are estimated to remain worldwide, but the population in Norway, Sweden and Finland has plummeted to just 250.
Researchers examined 179 radio-marked young moose over the course of a four-month period. Of those calves they screened, 125—or nearly 70 percent—of the moose calves died. The researchers suspect this is primarily because of the winter tick.
The news isn’t getting any better for New Hampshire’s moose, as the population explosion of winter ticks driven by warmer winters continues to take a toll.
While calm winds and sunny skies over the past few weeks were excellent for many outdoor activities, they were not ideal for hunting. The fall moose hunt in game management units 17B and 17C ended Sept. 15. Harvest reports are still trickling in, and, so far, the numbers are low.
Five aerial photos of moose in the Adirondacks
Leptospirosis infections, caused by Leptospira bacteria, occur in people and animals around the world, but different strains of the bacteria may vary in their ability to cause disease and to jump between species. Now, researchers have for the first time described the characteristics of the Leptospira variants that infect cattle in Uruguay.
Zarantonelli et al. 2018. Isolation of pathogenic Leptospira strains from naturally infected cattle in Uruguay reveals high serovar diversity, and uncovers a relevant risk for human leptospirosis. PLOS Neglected Tropical Diseases 12 (9): e0006694 DOI: 10.1371/journal.pntd.0006694
For millennia, ecosystems in Greenland and throughout the Arctic have been regulated by seasonal changes that govern the greening of vegetation and the migration and reproduction of animals. But a rapidly warming climate and disappearing sea ice are upending that finely tuned balance.
Extreme heat events wreak havoc on marine ecosystems and will only get worse in coming decades.
In Gachuurt Village in Bayanzurkh district, beavers are being introduced to restore the headwaters of the Tuul River, the main drinking water source of the capital city, Ulaanbaatar.
Wild and free. That’s the new life for a herd of 31 plains bison which have finally been fully reintroduced to the backcountry of Banff National Park for the first time in 140 years.“These are not a captive display herd.
Ten caribou herds in Canada's West are on the verge of dying out. For one amateur filmmaker who spent a decade documenting what he thought would be a conservation success story, the recent decline is like a 'huge kick in the gut.'
From floods to fires, drought to coastal erosion, climate change is already having an impact on Canada's communities, landscapes and wildlife
Warmer temperatures and declining sea ice pulls foreign animals and plants to the Arctic, with drastic consequences for these sensitive ecosystems.
A scientific paper published recently hints at how increasing winter rainfall will affect the Arctic muskox. An N.W.T. biologist says winter rain isn't good for the mammal, but it's actually warmer summers that could prove detrimental.
A new study has uncovered previously unknown effects of rain-on-snow events, winter precipitation and ice tidal surges on the muskoxen.
Climate change may be enabling beavers to move deeper into the Arctic. And as they move, they magnify climate change’s effects.
Recent decline of sea ice habitat has coincided with increased use of land by polar bears (Ursus maritimus) from the southern Beaufort Sea (SB), which may alter the risks of exposure to pathogens and contaminants. We assayed blood samples from SB polar bears to assess prior exposure to the pathogens Brucella spp., Toxoplasma gondii, Coxiella burnetii, Francisella tularensis, and Neospora caninum, estimate concentrations of persistent organic pollutants (POPs), and evaluate risk factors associated with exposure to pathogens and POPs. We found that seroprevalence of Brucella spp. and T. gondii antibodies likely increased through time, and provide the first evidence of exposure of polar bears to C. burnetii, N. caninum, and F. tularensis. Additionally, the odds of exposure to T. gondii were greater for bears that used land than for bears that remained on the sea ice during summer and fall, while mean concentrations of the POP chlordane (ΣCHL) were lower for land-based bears. Changes in polar bear behavior brought about by climate-induced modifications to the Arctic marine ecosystem may increase exposure risk to certain pathogens and alter contaminant exposure pathways.
Alberta consistently sees an average of 1400 wildfires each year however, the increased economic costs due to firefighting, equipment, damaged properties, evacuations, insurance, remote housing and food can be a challenge.
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