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Post by OldGreenGrolar on Oct 23, 2021 22:28:39 GMT -5
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Post by OldGreenGrolar on Jan 27, 2022 6:40:34 GMT -5
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Post by OldGreenGrolar on Jan 27, 2022 7:15:23 GMT -5
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Post by OldGreenGrolar on Jun 4, 2022 8:27:34 GMT -5
A male polar bear in poor condition still has healthy and powerful looking limbs. Imagine a healthy fellow.
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Post by yz on Jun 4, 2022 9:09:48 GMT -5
A healthy fellow would oneshot any lion or tiger alive 😎 notice how this unhealthy individual comes from Hudson Bay. So imagine a Foxe Basin individual in his prime. 😱😱😱😱
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Post by Montezuma on Jun 4, 2022 9:50:56 GMT -5
A male polar bear in poor condition still has healthy and powerful looking limbs. Imagine a healthy fellow. I rarelt see polar bear documentaries. You know why? Because when they show a male killing a cub or a starving polar bear, it brings tears in my eyes.😥
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Post by brobear on Jun 4, 2022 11:04:12 GMT -5
Reply #263, this polar bear would probably be a dangerous bear to meet in his wanderings.
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Post by OldGreenGrolar on Jun 8, 2022 7:55:32 GMT -5
Reply 265. It is not the polar bears fault regardless, humans tamper with the environment and reduction in the availability of natural prey will make a polar bears turn cannibalistic. However, I do understand where you are coming from.
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horribilis
Parictis
“You have no idea how powerful the truth can be.” - Oliver Queen
Posts: 47
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Post by horribilis on Jun 12, 2022 1:04:39 GMT -5
theundertaker45Since you're quite well versed with the body dimensions of bears , what's the biggest chest girth measurement a polar bear has hit on the charts(excluding the specimens from foxe basin) ?
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Post by theundertaker45 on Jun 12, 2022 4:47:39 GMT -5
horribilis A friend of mine once did a GDI of the 1002kg polar bear and at those dimensions the chest girth would be ~208.2cm. Nowadays an average male polar bear is like 450kg, so it would be expected to have a chest girth of ~159.5cm. Large male polar bears (excluding Foxe Basin) have been recorded at 900kg in Northern Siberia (historical records); the chest girth would be ~200.9cm. I can't give you any chest girth measurements on large males as I don't think there are any tables or something like that; I've only seen a statement mentioning large males to measure up to 200cm around the chest and large females up to 175cm (Beaufort Sea) which was published by Steven C. Amstrup. In case you don't know who this person is: "Dr. Amstrup has been conducting research on all aspects of polar bear ecology in the Beaufort Sea for 24 years. His interests include distribution and movement patterns as well as population dynamics of wildlife, and how information on those topics can be used to assure wise stewardship. He is particularly interested in how science can help to reconcile the ever-enlarging human footprint on our environment with the needs of other species for that same environment."
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horribilis
Parictis
“You have no idea how powerful the truth can be.” - Oliver Queen
Posts: 47
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Post by horribilis on Jun 13, 2022 2:40:32 GMT -5
Thanks for that interesting piece of information , taker . So , large polar bears have attained chest girths of up to 200 cm but we don't have an accurate figure for such individuals evaluated. Now , on to my main point , I've recently mailed Dr. Ian Stirling regarding the biggest chest girth measurement he's obtained for a polar bear and the estimated body mass of this animal . The following was his response:
"Dear Mr (My name),
Thanks for your email and your interest in polar bears. I went back through some of our older papers when we were just finding out what bears weighed and what kinds of measurements were related to weights. I am uncertain whether there might have been a higher chest circumference and weight than the one that follows but, if so, it wouldn't have been much larger. The maximum chest measurement (taken just behind the front legs), measured in Hudson Bay, as of about 1989, was 201 cm and a maximum weight of 654 kg (1,438 lb). However, the biggest polar bears seem to be in the Bering Sea, off the coast of Alaska but the largest ones were too heavy to be lifted for weighing with a helicopter. The heaviest was "guestimated" to be about 800 kg (1760 kg).
Best wishes, Ian Stirling "
What do we got here ? Apparently , nothing new , considering majority of the points mentioned by him have already been corroborated in Polar bears of southern Hudson Bay project (Kolenosky, G. B., K. F. Abraham, and C. J. Greenwood. 1992) and almost all of the posters who're quite interested in body dimensions of these animals must be aware of it . But he's also mentioned something new over here , i.e , a specimen from Hudson Bay registered a chest girth of whopping 201 cm . So , how much would've this specimen weighed ? Well , several scientists have developed equations in the past to derive body mass from chest girth ( since chest girth has strong correlation with body mass (correlation coefficient r^2=0.97) ) , but one of them stands out in particular - the equation , weight = 0.000476*(chest girth)^(2.69) , developed by Kolenosky in 1989 since this equation takes into account bears > 400kg compared to the previous one developed by Stirling in 1977 which failed to take into account specimens > 400kg. Moreover , even in the study conducted by Rhode et al. (2014) , Kolenosky's equation was preferred for almost all the populations except for the ones from Barents Sea where a population specific equation was used .Applying Kolenosky's equation for this new male reported by Dr. Stirling , we get a weight of ~747 kg (1647 lbs) for this specimen.
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Post by yz on Jun 19, 2022 12:27:43 GMT -5
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Post by brobear on Jun 19, 2022 14:18:16 GMT -5
Reply 265. It is not the polar bears fault regardless, humans tamper with the environment and reduction in the availability of natural prey will make a polar bears turn cannibalistic. However, I do understand where you are coming from. You posted the picture OldGreenGrolar. It reads, quote, "Adult male polar bear apparently in poor body condition..." meaning very hungry; near starvation. I posted, quote, "Reply #263, this polar bear would probably be a dangerous bear to meet in his wanderings." *So, are you saying that you would be comfortable being alone on the ice with this bear?
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Post by OldGreenGrolar on Jun 19, 2022 15:47:51 GMT -5
/\ No I would not want to be near a starving polar bear. Being near one alone = become a meal.
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Post by OldGreenGrolar on Jul 14, 2022 19:17:38 GMT -5
Another photoshop. The polar bear is probably female.
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Post by OldGreenGrolar on Aug 26, 2022 23:49:21 GMT -5
Largest polar bear shot estimated to be 2200 pounds and 12 ft probably exaggerated and skin stretched by trophy hunters. No way this circus polar bear can be above 1000 pounds nor 12ft considering this woman is only 5ft.
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Post by skibidibopmmdada on Aug 27, 2022 11:49:04 GMT -5
I notice more forelimb and maybe bigger forearm muscles in polar bears than I do in brown bears. Of course they still lack the huge shoulder hump though. Wasn't there a picture of a hairless polar bear? I didn't see as much muscle on that one.
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Post by OldGreenGrolar on Aug 28, 2022 2:09:47 GMT -5
I notice more forelimb and maybe bigger forearm muscles in polar bears than I do in brown bears. Of course they still lack the huge shoulder hump though. Wasn't there a picture of a hairless polar bear? I didn't see as much muscle on that one. Polar bears have stronger forearms than grizzly bears and Kodiak bears (if they outweigh the latter by a decent amount of weight). The hairless bear is a spectacled bear: the last member of the short faced bear family.
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Post by skibidibopmmdada on Aug 28, 2022 5:12:18 GMT -5
I notice more forelimb and maybe bigger forearm muscles in polar bears than I do in brown bears. Of course they still lack the huge shoulder hump though. Wasn't there a picture of a hairless polar bear? I didn't see as much muscle on that one. Polar bears have stronger forearms than grizzly bears and Kodiak bears (if they outweigh the latter by a decent amount of weight). The hairless bear is a spectacled bear: the last member of the short faced bear family. Wow, I searched polar bear black skin and I think that exact same one showed up.
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Post by OldGreenGrolar on Aug 28, 2022 7:52:21 GMT -5
Polar bears have stronger forearms than grizzly bears and Kodiak bears (if they outweigh the latter by a decent amount of weight). The hairless bear is a spectacled bear: the last member of the short faced bear family. Wow, I searched polar bear black skin and I think that exact same one showed up. Is this the one? It is a spectacled bear.
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