Average weight of Ursus arctos

[brobear]

The average size of brown bears who live in isolated barren ground locations, such as open tundra, desert locations, or high mountain ranges, tend to be small, perhaps with a combined average of roughly 300 pounds ( some above and some below ). But these populations of smaller bears are never in large numbers. They are outnumbered by inland brown bears of more lush environments such as the Montana grizzly, the European brown bear, or the Ussuri brown bear. The healthier their environment, the bigger the bear. But these inland bears are themselves outnumbered by the giant coastal salmon-eaters. The giants of the brown bear world. So, considering the barren-ground bears as the fewest, the inland variety as next in line, and the coastal giants as most numerous... 
   
So, the average weight of Ursus arctos, the brown bear, as a species... 300 + 450 + 450 + 900 + 900 + 900 = 3,900 divided by 6 = roughly 650 pounds.  Not an accurate scientific method, but probably close. 
 
*Any other options?
  
I don't believe that I am over estimating. 300 pounds might be low for the typical brown bear of barren locations, such as the high Himalayan Mountains ( maybe ). 450 pounds might be a little low for the typical inland brown bears of healthier environments ( maybe ). And 900 pounds might be a tad low for the average coastal giants. Also note, I added one for the barren ground bears and two for the other inland brown bears. Even though those other bears probably better than double the barren ground bears in numbers. I added the coastal bears by three; double all inland brown bears. However, in the real world, the coastal giants probably better than double all the inland brown bears.

[brobear]

IF my estimation is reasonably close, then this would basically put the average brown bear ( Ursus arctos ) within the size range of the Hokkaido and the Ussuri subspecies.

[OldGreenGrolar]

The brown bear outweighs the tiger and lion and is similar in weight to the smilodon populator at average weights.

[brobear]

Jan 8, 2021 4:35:05 GMT -5 OldGreenGrolar said:

The brown bear outweighs the tiger and lion and is similar in weight to the smilodon populator at average weights.

Only if ( a big if ) my estimations are reasonably close to accurate. I could be off in either direction by tens-of-pounds.( maybe more )  
  
*Edit and add: to make an estimation with more accuracy, we would need the average weights of each and every brown bear population on Earth as well as their population numbers. But we do know that living within the harshest environments such as the arctic tundra, the Gobi desert, and the high Himalayan Mountains produces bears probably averaging roughly 300 pounds; some above yet some under 300 pounds. We know that the other inland brown bears are more numerous and larger, ranging in most cases from 400 to 500 pounds. Those inland brown bears of Russia and Japan are exceptional. We also know that the giant salmon-eaters of the coastal locations are both the largest and the most numerous of living brown bears. 

[brobear]

Averaging out the coastal giants, Kamchatka 661 lbs, Kodial 1,077, and the Alaskan peninsula brown bear, 857, the average coastal giant is roughly 865 lbs.

300 + 450 + 450 + 865 + 865 + 865 = Averaged out at: 632.5 lbs. ( probably a close estimation of the average full-grown male brown bear - Ursus arctos ).

[OldGreenGrolar]

That is similar to the average weight of smilodon populator and heavier than most tigers and lions.

In fact the average weight of the Ussuri brown bear might represent the average weight of the brown bears according to Brobear’s calculations.

[brobear]

When we look at the lion, Panthera leo, and the tiger, Panthera tigris, each as a species, then we see two big cat species each averaging well below 400 pounds. The brown bear, averaging 630 pounds, has a weight advantage of from 260 to 285 pounds. ( see 'Weight Collection' Reply #145 ).

[OldGreenGrolar]

Brown Bear - Ursus arctos.
The brown bear (Ursus arctos) is a large bear species found across Eurasia and North America. In North America, the populations of brown bears are called grizzly bears. It is one of the largest living terrestrial members of the order Carnivora, rivaled in size only by its closest relative, the polar bear (Ursus maritimus), which is much less variable in size and slightly bigger on average. The brown bear's range includes parts of Russia, Central Asia, China, Canada, the United States, Hokkaido, Scandinavia, the Balkans, the Picos de Europa and the Carpathian region (especially Romania and Bulgaria), Iran, Anatolia, and the Caucasus. The brown bear is recognized as a national and state animal in several European countries. The average weight of adult male bears from 19 populations, from around the world and various subspecies (including both large- and small-bodied subspecies), was found to be 217 kg (478 lb) while adult females from 24 populations were found to average 152 kg (335 lb).

carnivora.net/brown-bear-v-black-caiman-t9476.html#p155839

[King Kodiak]

Reply #7: the source for that is Wiki:

en.m.wikipedia.org/wiki/Brown_bear

But its good because it states the overall average weight of adult male brown bears worlwide at 478 lbs. Anyhow, i am willing to bet that 5+ year olds are included there.

[brobear]

Jan 25, 2021 7:21:57 GMT -5 King Kodiak said:

Reply #7: the source for that is Wiki:

en.m.wikipedia.org/wiki/Brown_bear

But its good because it states the overall average weight of adult male brown bears worlwide at 478 lbs. Anyhow, i am willing to bet that 5+ year olds are included there.

Also, they are not taking under consideration that well over half of all brown bears ( I believe ) are coastal giants. They seem to be the most heavily populated. Also, not taken into consideration, the smallest bears which live in isolated barren locations are the least heavily populated. 

[OldGreenGrolar]

According to the demographic of brown bears in North America, the Peninsula Alaskan brown bears are more numerous than the mainland grizzlies.

[brobear]

Jan 25, 2021 8:12:23 GMT -5 OldGreenGrolar said:

According to the demographic of brown bears in North America, the Peninsula Alaskan brown bears are more numerous than the mainland grizzlies.

Also, both the Kodiak and the Kamchatka have heathy populations. Barren ground grizzly, Gobi bear, Syrian brown bear, Himalayan red bear, Tibetan blue bear, and any other barren ground brown bear subspecies are scantly populated.  
 
*It stands to reason ( IMO ) that the average brown bears should be larger than an inland grizzly.