Stories tagged shrinkage

Dec
01
2008

A bear of constant sorrow: The expression on his face speaks volumes.
A bear of constant sorrow: The expression on his face speaks volumes.Courtesy Sketchzilla
Buzzketeer General Liza put me on to this story last week, and I’m glad she did. Folks should know the plight of the polar bear.

So, you know those images of polar bears standing on the edge of ice sheets, looking sad because the ice is shrinking, and they need that ice to, you know, stay alive? You know what I’m talking about.

Well… it turns out that shrinking ice may be the least of their worries.

How do I put this? There’s trouble down south in the far north? A great big bear has a… Oh, forget it. Polar bears’ genitals are shrinking.

Oh, this is bleak. Two genital-based posts in a row? I don’t like it any more than you do, and I know you don’t like it. But we’re being beaten down and overwhelmed by genitals in the news, and we can’t ignore the news.

So, yes, after millennia of fearlessly swimming in an ocean of ice water, the mighty polar bear is finally suffering from shrinkage. But this isn’t one of the many problems that global warming can solve—this little situation is being caused by pollution, not cold water.

Y’all know about bioaccumulation and biomagnification? Toxic compounds can be found at very low concentrations in the environment, but still end up at dangerously high levels in certain plants and animals. This is caused by organisms taking in toxins faster than they can get rid of them, and by animals eating lots of other animals or plants that already have toxins in them. That’s what’s happening in the arctic. Tiny organisms are absorbing certain organic pollutants from the environment, and those organisms are getting eaten by tiny fish, and those tiny fish are getting eaten by bigger fish, and so on until big fish, with lots of the pollutants stored up in their bodies get eaten by an animal that doesn’t often get eaten by anything else, animals like killer whales, arctic foxes, or polar bears.

Biologists studied preserved polar bear genitals (penises, testicles, and ovaries) collected between 1999 and 2002, and found that individual bears with higher concentrations of these organic pollutants (called “organohalogens”) consistently had smaller bits and pieces. The organohalogens act like hormones in the bears, and we all know the amazing things hormones can do.

Now we must ask ourselves that age old question: “What does this mean for the bears?” Well, it seems that bears can’t rely on personality alone for successful mating. Polar bears don’t reproduce that often in the first place, and shrinking reproductive organs (in both boy-bears and lady-bears) is only going to make things trickier. And then there’s that whole ice-shrinking thing, which has probably taken a back seat in the minds of young bears everywhere.

In related news, a couple of polar bears at a Japanese zoo were having trouble conceiving until their handlers finally realized that they were both female. (I imagine that they would still have trouble conceiving, but I think the pressure is off now.) Apparently telling male and female bears apart is difficult as it is.

Mar
23
2008

The Briksdal Glacier: Not at its most impressive. Just look away.
The Briksdal Glacier: Not at its most impressive. Just look away.Courtesy xdmag
Across the globe, glaciers are suffering the humiliation of being seen in a state of exacerbated shrinkage.

Having gone so long without serious scrutiny as to their size, the bedroom door has been thrown open on the glaciers of the world, leaving them flailing to cover up what little is left of theirs to cover up.

“What did you expect?” Points out one glacier. “We’re cold. that’s what happens.”

Climatologists would disagree, however, on the cause of the shrinkage, if not the shrinkage itself, viewing the phenomenon as a key indicator of a warming climate. Average glacial shrinkage, it is reported, has risen from about 30 centimeters a year between 1980 and 1999, to 1.5 meters in 2006.

The glaciers, as they retreat like “frightened turtles” into their mountain refuges, are causing alarm not only as indicators of global climate change, but for their own diminishing potential to supply fresh water for “drinking, agriculture, industry, and power generation.”

Glaciers are believed to have started shrinking globally around 1850, although the rate of shrinkage looks to have increased dramatically in the early 80’s, and Dr. Wilfried Haeberli, director of the World Glacier Monitoring service, says that “the latest figures are part of what appears to be an accelerating trend with no apparent end in sight.”