Hogeye wrote:Have you noticed that the declining world polar bear population claim is pure conjecture, and not supported by any reliable survey?
DOUG
No, I have noticed that the claim is based on facts.
Hogeye wrote:The claim seems to be based on anecdotal evidence. The main threat seems to be, not global warming, but over-harvesting by Innuits, according to the stuff I've seen.
DOUG
You didn't see your own source that you cited above?
Hogeye wrote:
The best info I could find came out a couple months ago:
Polar bears: The current facts I seems biased - it notes reductions in population but doesn't acknowlege increases! They frame it as "reduced" or "not reduced." Duh.
DOUG
Oh, so when a population is not reduced we ASSUME it is increasing and not just remaining stable? You should not make that assumption. Your own source estimates that of the 13 populations, TWO are estimated to probably increase in size. The rest are either estimated to be decreasing or said to remain stable, with one "data deficient."
Hogeye wrote:Assuming "not reduced" is a euphamism for "increased" (since it is unlikely to have exactly the same population as historic comparison), the bottom line is: Of thirteen known Canadian Polar Bear populations, 6 are increasing, 6 are declining, and one is unknown due to lack of data.
Your source says:
To summarize the above table:
Of the 13 Canadian polar bear populations, the current trends for the 11 populations not known to be severely reduced from historic levels are:
five populations declining,
five populations stable and
one population is data deficient.
In the next 10 years, five polar bear populations have an estimated high/very high risk of decline, six have a low/very low risk and there is currently no estimate for two populations.
DOUG
You are importing an "increase" where the source says "stable"--an unwise assumption, as explained above.
And what does your source have as the first threat listed for polar bears?
Threats
The main threats to the continued survival of polar bear populations are:
Global warming (especially the melting of sea ice, and changes to marine food supply and availability);
DOUG
So why do you say
Hogeye wrote:The main threat seems to be, not global warming, but over-harvesting by Innuits, according to the stuff I've seen.
Your source lists global warming as #1 on the list of threats, but it does NOT say that over-hunting (which is listed) is a greater threat.
And note, it DOES say, contrary to your own claim, that global warming IS a threat to polar bears.
So once again does a source you cite state the opposite of what you claim as your own thesis? I would appear so.
"We could have done something important Max. We could have fought child abuse or Republicans!" --Oona Hart (played by Victoria Foyt), in the 1995 movie "Last Summer in the Hamptons."