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Post by King Kodiak on Apr 6, 2019 9:08:16 GMT -5
URSUS AMERICANUS CARLOTTAE
The Haida Gwaii black bear (Ursus americanus carlottae) is a morphologically distinct subspecies of the American black bear. The most significant morphological differences are its large size, massive cranium and large molars. This subspecies is endemic to the Haida Gwaii (the Queen Charlotte Islands)[1] and is considered a "keystone species" because of the bears' transportation of salmon remains into the surrounding forests of the Haida Gwaii.
en.m.wikipedia.org/wiki/Ursus_americanus_carlottae
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Post by King Kodiak on Apr 6, 2019 9:19:14 GMT -5
HAIDA GWAII BLACK BEAR  |
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Post by brobear on Dec 27, 2019 4:02:00 GMT -5
Just wondering if anyone has the details of the Hawaii Gwaii (Queen Charlotte) American black bear subspecies? The Haida Gwaii black bear (Ursus americanus carlottae), also known as the Queen Charlotte Islands black bear, is a morphologically distinct subspecies of the American black bear. The most significant morphological differences are its large size, massive cranium and large molars. This subspecies is endemic to the Haida Gwaii (the Queen Charlotte Islands) and is considered a "keystone species" because of the bears' transportation of salmon remains into the surrounding forests of the Haida Gwaii. |
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Post by brobear on Dec 27, 2019 5:34:32 GMT -5
www.bearconservation.org.uk/haida-gwaii-black-bear/ Accepted scientific name: Ursus americanus carlottae (Osgood, 1901). Description: Larger than mainland black bears and regarded as the largest subspecies of the American black bear with a huge skull and molars, and found only as a black colour phase with a tan muzzle and often a white v-shaped chest blaze. Range: Haida Gwaii archipelago (formerly the Queen Charlotte Islands), Canada. Habitat: Forests, meadows, streams, estuaries and shorelines of the archipelago. Status: It is not known how many bears there are on the Islands but since since 1977 over 975 bears have been killed by hunters. In 1995 and 2004 the Council of the Haida Nation called for an end to recreational bear hunting on Haida Gwaii. Life span: Probably around 20 years in the wild. Food: Haida Gwaii black bears are omnivorous. They forage in the intertidal zone for crabs, sea-urchins, beach hoppers, clams, mussels and barnacles. From spring to early summer much of their diet consists of green vegetation including sedges, nettles, fireweed, horsetail, rushes, ferns, cow parsnip, Pacific hemlock, beach lovage and skunk cabbage. From June onwards berries from an ever greater part of the bears’ diet until October when the bears move to the salmon spawning streams. The spawning period lasts around 45 days during which time the bears will accumulate something in the region of 70 percent of their annual protein intake. Behaviour:. The bears typically hibernate for between three and five months, most commonly emerging in April or May. Dens are most commonly made in old-growth cedar forests in hollow trees or stumps. Pregnant females give birth in the den to between one and five cubs with two or three the norm. Cubs are usually born in January and will remain with their other for about one and a half years, during which time she will not become pregnant again. Threats: Hunting is the major cause of Haida Gwaii black bear mortality. MORE INFORMATION Haida Gwaii environmental conditions report (2005). (Opens as pdf document from our own server.) This report provides an overview of the Haida Gwaii / Queen Charlotte Islands environment – historically, currently, and into the future as defined by current management practices. It includes the Haida Gwaii black bear as an indicator of environmental conditions. The specific section on the bears begins on page 108.  Page updated 03 March 2018
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Post by King Kodiak on Dec 27, 2019 6:29:08 GMT -5
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Post by brobear on Dec 28, 2019 8:01:21 GMT -5
Range: Haida Gwaii archipelago (formerly the Queen Charlotte Islands), Canada.  |
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Post by OldGreenGrolar on Dec 28, 2019 8:38:14 GMT -5
According to Big Bons, exceptionally large American black bears become bolder and more predatory than the average American black bear which makes sense considering the fact that they grow larger and become the apex predator in the absence of grizzly bears. Regardless, brown bears and polar bears are generally more aggressive than the American black bears.
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Post by brobear on Jul 6, 2020 4:48:09 GMT -5
From reply #3... Description: Larger than mainland black bears and regarded as the largest subspecies of the American black bear with a huge skull and molars, and found only as a black colour phase with a tan muzzle and often a white v-shaped chest blaze.
*This is the kind of rhetoric that drives me insane; "the largest subspecies of the American black bear". Yet, he is not found in this topic: "Largest Black Bears on record."
Also, as I search all through in internet, I can find no weights on the Queen Charlotte black bear. I'm considering writing a letter to Queen Charlotte Flair.
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Post by King Kodiak on Jul 6, 2020 4:55:49 GMT -5
I understand your point, but maybe on average it has the largest black bears. And it makes sense because its an island, same as Kodiak island:
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Post by brobear on Jul 6, 2020 5:21:34 GMT -5
Quote: I understand your point, but maybe on average it has the largest black bears. *For this to be stated; you would think that someone would have some numbers. shaggygod.proboards.com/thread/623/haida-gwaii-coastal-black-general The controversial role of Haida Gwaii (Queen Charlotte Islands) as a biological refugium on the north-western coast of North America has been widely discussed for more than fifty years. The presence of morphologically divergent subspecies on Haida Gwaii is one of the major lines of evidence suggesting this archipelago's role as a refugium during the Wisconsin. However, since morphological distinction can be derived postglacially as well as in extended isolation, such evidence is ambiguous. To examine this question, we did a phylogenetic analysis of cytochrome b sequences (719 bp) of black bear (Ursus americanus), one of the distinctive endemics of Haida Gwaii, and compared these with conspecifics from across North America, focusing primarily on the northwestern coast. We found that the Haida Gwaii bear are indistinguishable from coastal bear of British Columbia and Vancouver Island, but are highly distinct from continental bear. Coastal and continental bears differ by 24 synapomorphies and an average sequence divergence of 3.6%. The coastal mitochondrial lineage occurs in each of the three recognized coastal subspecies suggesting that the morphological characteristics differentiating these taxa may be postglacially derived. The data are consistent with recent suggestions that a glacial refugium existed on the now submerged continental shelf connecting Haida Gwaii, Vancouver Island, and the coastal fringe of mainland British Columbia. This refugium would have been an additional source for postglacial recolonization of northwestern North America. S. A. Byun, B. F. Koop and T. E. Reimchen. North American Black Bear mtDNA Phylogeography: Implications for Morphology and the Haida Gwaii Glacial Refugium Controversy. Evolution Vol. 51, No. 5 (Oct., 1997), pp. 1647-1653. |
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Post by brobear on Jul 6, 2020 5:22:31 GMT -5
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Post by King Kodiak on Jul 6, 2020 5:31:20 GMT -5
THIS ONE LOOKS PRETTY LARGE ALSO:
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Post by King Kodiak on Jul 6, 2020 5:46:51 GMT -5
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Post by OldGreenGrolar on Jul 6, 2020 7:39:09 GMT -5
THIS ONE LOOKS PRETTY LARGE ALSO:
This fellow has powerful limbs as well. |
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Post by brobear on Jul 10, 2020 5:33:21 GMT -5
From Taipan
Haida Gwaii Black Bear - Ursus americanus carlottae
The Haida Gwaii black bear (Ursus americanus carlottae) is a morphologically distinct subspecies of the American black bear. The most significant morphological differences are its large size, massive cranium and large molars. This subspecies is endemic to the Haida Gwaii (the Queen Charlotte Islands) and is considered a "keystone species" because of the bears' transportation of salmon remains into the surrounding forests of the Haida Gwaii. Adult Haida Gwaii black bear can reach 7 feet tall as common but can reach 8 feet tall, the adult male black bears can reach a size from 400 to maybe 700 pounds similiarly to grizzly bear, and some individual Haida Gwaii black bear can have shoulder humps because they can be more muscular than other north American black bears.
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Post by brobear on Jul 10, 2020 5:51:17 GMT -5
Quote from above post: "...and some individual Haida Gwaii black bear can have shoulder humps because they can be more muscular than other north American black bears."
A grizzly is born with this shoulder hump because of his heritage - roughly one-million years of digging for food, excavating a den, or burying a carcass. A grizzly who himself does a lot of digging will have a more pronounced shoulder hump than one who does little digging. The Haida Gwaii black bear who has this grizzly-like shoulder hump is ( IMO ) an individual bear who spends ample time digging for whatever reasons.
*Note: I believe you are correct King Kodiak that while the record black bears are Eastern black bears, the Queen Charlotte bear is the biggest American black bear on average. This would suggest that the Eastern black bears have a wider range of size that the Haida Gwaii black bear.
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Post by King Kodiak on Jul 10, 2020 7:11:47 GMT -5
Thats just from Wiki, not Taipan, lol. And its the first post of this thread.
Yeah thats true. Anyways, black bears do actually have shoulder humps, but they are not pronounced at all, barely visible.
True also. Eastern black bears have a massive range, basically the whole eastern half of the USA, therefore the wide weight range.
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Post by OldGreenGrolar on Jul 10, 2020 7:57:14 GMT -5
The Haida Gwaii American black bear is still more muscular than the rest of its kin despite being nowhere near as powerful or strong as a grizzly bear.
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