|
Post by theundertaker45 on May 26, 2020 5:12:13 GMT -5
brobearThe barren ground grizzlies in Nelchina average close to 600lbs; they are huge. 😎
|
|
|
Post by brobear on May 26, 2020 5:15:33 GMT -5
brobear The barren ground grizzlies in Nelchina average close to 600lbs; they are huge. 😎
|
|
|
Post by OldGreenGrolar on May 26, 2020 6:23:07 GMT -5
According to the info posted by Taker, it seems the barren ground grizzlies overlap in weight with tigers and lions.
|
|
|
Post by King Kodiak on May 26, 2020 6:50:50 GMT -5
|
|
|
Post by theundertaker45 on May 26, 2020 7:21:22 GMT -5
The average weight has been updated by me (initial comment on the weights of barren ground grizzlies) as I have managed to find a more extensive study on the bears inhabiting the Northern Yukon and the Northwest of Alaska; the new average weight is 179.8kg (396.4lbs) for males with an age of 5 years or higher.
|
|
|
Post by brobear on May 26, 2020 7:50:46 GMT -5
The average weight has been updated by me (initial comment on the weights of barren ground grizzlies) as I have managed to find a more extensive study on the bears inhabiting the Northern Yukon and the Northwest of Alaska; the new average weight is 179.8kg (396.4lbs) for males with an age of 5 years or higher. Alright; still better than I previously believed. What average weight would you estimate for the average 10+ year old boar?
|
|
|
Post by theundertaker45 on May 26, 2020 7:55:49 GMT -5
If I applied the same relative difference between fully grown and sexually mature Yellowstone grizzlies to them, I would have an average weight of 199.8kg (440.4lbs) for fully grown boars and an average weight of ~222.1kg (489.6lbs) for boars at their physical prime.
|
|
|
Post by brobear on May 26, 2020 8:35:47 GMT -5
If I applied the same relative difference between fully grown and sexually mature Yellowstone grizzlies to them, I would have an average weight of 199.8kg (440.4lbs) for fully grown boars. I'm loving it. Basically the weight of a Bengal tiger.
|
|
|
Post by brobear on Aug 27, 2020 12:56:00 GMT -5
shaggygod.proboards.com/thread/537/arctic-northernmost-grizzly-bears-america?page=1 Not Your Average Griz Although genetically identical to the eight-foot, 900-pound coastal brown bears of southern Alaska, the barren ground grizzly rarely tops six feet and 500 pounds. A scarcity of food in northern Alaska makes these grizzlies smaller, and they behave very differently from coastal brown bears. Well-fed brown bears sleep a lot and shamble around a ten-square-mile territory. In contrast, hungry barren ground grizzlies can prowl 5,000-square-mile territories, constantly sniffing the air for scent. In the Arctic—where there are no streams filled with fat salmon, no forests to provide shade or cover, and food gathering is cut short by the long winters—the omnivorous barren ground's mission is simple: relentlessly hunt down and consume every available scrap of food. Roots and sedges help them fend off starvation, but for thousands of years these grizzlies have preferred meat, found in fresh supply at the movable feasts that are Alaska's legendary caribou herd migrations. Each June on the refuge's coastal plain, caribou herds birth up to 60,000 calves, and bears can kill up to six newborns a day. But this meat supply has been dwindling as the effects of climate change become manifest in the Arctic, and the habitually famished grizzlies are finding themselves in even more desperate straits. According to a 2002 U.S. Geological Survey report, increased spring snow and ice—a paradoxical result of global warming trends—is burying the coastal plain plants essential to caribou and grizzly diets. The caribou are decreasing in number or seeking grazing land elsewhere, and the barren ground grizzlies, bereft of this supplemental protein, have been stalking the tundra for alternatives. U.S. Fish and Wildlife Service biologist Patricia Reynolds notes that over the past five or six years, the refuge's musk ox population has dwindled from around 300 to no more than 50. As human traffic increases in the refuge, one can only wonder if grizzlies might test them as new prey. "That grizzly is more aggressive than the coastal brown bear," says Will Troyer, who began live-trapping bears in Alaska in the 1950s. "When I first went up there, you never saw anybody in that country except for the Eskimos. Now the climate is getting warmer, and there's more human activity." Fran Mauer, a recently retired USFWS wildlife biologist, is one of many experts who say that bears could easily kill a lot more people, but don't. From 1900 to 2000, brown bears killed 42 humans in Alaska (polar bears have killed one person in that time; black bears, six). But with more people visiting the North, it will only get more difficult for the emboldened barren ground grizzly to avoid human encounters. A day before the Huffmans were discovered, the bush pilot who dropped Mauer off in the refuge asked if he was packing a gun because the bears were acting up.
|
|
|
Post by King Kodiak on Oct 29, 2020 13:56:20 GMT -5
Denning Ecology of Barren-Ground Grizzly Bears in the Central Arctic
Abstract and Figures
(25), followed by west (13), east (10), and north (8). Most dens were constructed under cover of tall (.0.5 m) shrubs (Betula glandulosa and Salix), the root structures of which supported ceilings of dens. Selection of denning habitat by bears was significantly different from random (G 5 127.67, d.f. 5 6, P , 0.0001). Bonferroni confidence intervals indicated that esker habitat was selected more than expected by chance (P , 0.10). Den entrance occurred primarily in last 2 weeks of October. The majority of bears emerged from dens in the 1st week of May.
FULL STUDY HERE:
www.researchgate.net/publication/252280026_Denning_Ecology_of_Barren-Ground_Grizzly_Bears_in_the_Central_Arctic
|
|