GBFan
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This may come as a shocker to some, but scientists are not always right — especially when under intense public pressure for answers.
Researchers with the IUCN Polar Bear Specialist Group (PBSG) recently admitted to experienced zoologist and polar bear specialist Susan Crockford that the estimate given for the total number of polar bars in the Arctic was “simply
a qualified guess given to satisfy public demand.”
Crockford has been critical of official polar bear population estimates because they fail to include five large subpopulations of polar bears. Due to the uncertainty of the populations in these areas, PBSG did not include them in their official estimate — but the polar bear group did include other subpopulation estimates.
PBSG has for years said that global polar bear populations were between 20,000 and 25,000, but these estimates are likely much lower than how many polar bears are actually living in the world.
“Based on previous PBSG estimates and other research reports, it appears there are probably at least another 6,000 or so bears living in these regions and perhaps as many as 9,000 (or more) that are not included in any PBSG ‘global population estimate,’” Crockford wrote on her blog.
“These are guesses, to be sure, but they at least give a potential size,” Crockford added.
PBSG disclosed this information to Crockford ahead of the release of their Circumpolar Polar Bear Action Plan in which they intend to put a footnote explaining why their global population estimate is flawed.
“As part of past status reports, the PBSG has traditionally estimated a range for the total number of polar bears in the circumpolar Arctic,” PBSG says in its proposed footnote. “Since 2005, this range has been 20-25,000. It is important to realize that this range never has been an estimate of total abundance in a scientific sense, but simply a qualified guess given to satisfy public demand.”
Researchers with the IUCN Polar Bear Specialist Group (PBSG) recently admitted to experienced zoologist and polar bear specialist Susan Crockford that the estimate given for the total number of polar bars in the Arctic was “simply
a qualified guess given to satisfy public demand.”Crockford has been critical of official polar bear population estimates because they fail to include five large subpopulations of polar bears. Due to the uncertainty of the populations in these areas, PBSG did not include them in their official estimate — but the polar bear group did include other subpopulation estimates.
PBSG has for years said that global polar bear populations were between 20,000 and 25,000, but these estimates are likely much lower than how many polar bears are actually living in the world.
“Based on previous PBSG estimates and other research
reports, it appears there are probably at least another 6,000 or so bears living in these regions and perhaps as many as 9,000 (or more) that are not included in any PBSG ‘global population estimate,’” Crockford wrote on her blog.“These are guesses, to be sure, but they at least give a potential size,” Crockford added.
PBSG disclosed this information to Crockford ahead of the release of their Circumpolar Polar Bear Action Plan in which they intend to put a footnote explaining why their global population estimate is flawed.
“As part of past status reports, the PBSG has traditionally estimated a range for the total number of polar bears in the circumpolar Arctic,” PBSG says in its proposed footnote. “Since 2005, this range has been 20-25,000. It is important to realize that this range never has been an estimate of total abundance in a scientific sense, but simply a qualified guess given to satisfy public demand.”
