Julia Whitty

Julia Whitty

Environmental Correspondent

Julia is an award-winning author of fiction and nonfiction (Deep Blue Home, The Fragile Edge, A Tortoise for the Queen of Tonga), and a former documentary filmmaker. She also blogs at Deep Blue Home.

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Julia is a writer and former documentary filmmaker and the author of The Fragile Edge: Diving & Other Adventures in the South Pacific, winner of a PEN USA Literary Award, the John Burroughs Medal, the Kiriyama Prize, the Northern California Books Awards, and finalist for the Dayton Literary Peace Prize, and Deep Blue Home: An Intimate Ecology of Our Wild Ocean. Her short story collection A Tortoise for the Queen of Tonga won an O. Henry and was a finalist for the PEN Hemingway Award. She also blogs at Deep Blue Home.

Whaling Loses Another Flimsy Rationale

| Fri Jan. 15, 2010 7:00 PM PST

A genetic analysis of Antarctic minke whales reveals these small baleen whales are not more populous now as a result of the intensive hunting of larger whales last century. The findings run counter to the belief of commercial whalers that the world is overrun with minke whales who need culling.

Cull (kul) v.t. A lame excuse to go hunting.

Miraculously, Antarctic minkes weren't decimated along with the other baleen and toothed whales in the 20th century. Blue whales were reduced to  1-2 percent of their previous numbers. Fin whales to 2-3 percent. Humpbacks to less than 5 percent.

Consequently, the "Krill Surplus Hypothesis" postulates that the two million whales who were killed in the Southern Ocean left behind a surplus of krill and a shortfall of predators. This supposedly paved the way for minke numbers to explode.

Except they didn't. The researchers analyzed genomic DNA from 52 samples of minke whale meat purchased in Japanese markets. The whales were killed during commercial whaling thinly disguised as "scientific whaling." The findings in Molecular Ecology:

  • Historical population of Antarctic minkes stood at roughly 670,000 individuals
  • Current population of Antarctic minkes stands at roughly the same number

Scott Baker, a whale geneticist at Oregon State University told OSU:

"Some scientists involved in the International Whaling Commission have suggested that Antarctic minke whales have increased three-fold to eight-fold over the last century because of the lack of competition for krill. But until now, there has been little evidence to help judge what historic populations of minke whales actually were. Our study clearly shows that minke whales today have a great deal of genetic diversity, which reflects a long history of large and relatively stable population size. This genomic approach is a significant advance over most previous studies, which have examined diversity using only a handful of genetic markers."

No one eats whale meat anymore. The Japanese feed it to their dogs. No excuses left.
 

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Topography of Haiti's Scary Faultline

| Wed Jan. 13, 2010 7:15 PM PST

Thanks to NASA's Earth Observatory for this informative graphic and text on the Haiti quake:

"At 4:53 p.m. local time on January 12, 2010, a 7.0-magnitude earthquake struck Hispaniola Island, just 10 miles southwest of the Haitian capital of Port-au-Prince. Besides its strong magnitude, the earthquake’s shallow depth of roughly 5.2 miles ensured that the densely populated capital suffered violent shaking.

"This map shows the topography and tectonic influences in the region of the earthquake. Lighter colors indicate higher elevation. Black circles mark earthquake locations determined by the U.S. Geological Survey, and circle sizes correspond with quake magnitudes. Dozens of aftershocks followed the main quake. Red lines indicate fault lines.

"The epicenter of the quake appears just south of the Enriquillo-Plaintain Garden Fault, the southernmost of two major east-west-trending faults that bear the stress of the convergence of the Caribbean and North America tectonic plates in this location. Though faults are weak spots or fractures in the Earth’s crust below the surface, very often there are topographical clues to their presence. In this case, the presence of the fault is indicated by long, straight valley cutting through southern Haiti, just south of Port-Au-Prince. The Enriquillo-Plaintain Garden Fault is a strike-slip type fault, with the Caribbean plate moving eastward with respect to the North America plate."

Haiti Quake Maybe Just a Prelude

| Wed Jan. 13, 2010 6:57 PM PST

The tragic intersection between poverty and nature that rent Haiti yesterday may not be the end of its seismic troubles. Science Now reports that yesterday's 7.0 temblor ruptured only a part of the same segment that 240 years ago unleashed a 7.5 quake—20 times more powerful than yesterday's.

Worse, the potential for even greater destruction exists. In 1751, a magnitude 8.0—32 times yesterday's quake—struck farther along the same fault system off the southern shore of the island of Hispaniola that Haiti shares with the Dominican Republic. A couple of months after that a magnitude 7.5 occurred nearby. Plus a separate active fault crosses through the north coast of the island.

Scientists are concerned the long-sleeping Caribbean has now been awakened.

Add to that the fact that Port-au-Prince is built on unstable sediments not bedrock and that the city lacks any kind of building code and you have a recipe for repeat disasters, and then some.

So can we at least try to include along with the "massive aid racing" to Haiti some sober planning... maybe a "building code" to alleviate the failed state in our own hemipshere? How about some genuine long-term help to heal the bones of that country? Does Wyclef have to do it all?
 

Just Don't Call it a Carbon Tax

| Tue Jan. 12, 2010 7:05 PM PST

A new study in Psychological Science ["A dirty word or a dirty world?" pdf] shows that Republicans and Independents would approve a "carbon offset" identical in every way to a "carbon tax" as long as it isn't called a tax.

Democrats would vote for it either way.

Researchers at Columbia ran an experiment where volunteers—self-identified as Democrats, Republicans, or Independents—read about a program that would increase the cost of carbon-producing activities but whose proceeds would be used to pay for alternative energies or carbon capture and sequestration.

For half the volunteers this surcharge was labeled a "carbon offset." The other saw it labeled as a "carbon tax." Details were identical.

The participants then had to choose between purchasing two identical items, like airline tickets, only one cost more because it included the surcharge. Results:

  • If it was called an offset, Democrats, Republicans, and Independents tended to select the more expensive and environmentally-friendly product
  • All parties were also equally likely to support making the surcharge mandatory
  • If it was called a tax, Democrats opted for the costlier item but Republicans and Independents were more likely to choose the cheaper item
  • Republicans and Independents would not support legislation mandating a tax

Wow. Tax really is a four-letter word.

Water's Tipping Point

| Mon Jan. 11, 2010 6:57 PM PST
Here's a cool video showing water's tipping point between freezing and thawing. It's fascinating on its own account. It's also loaded with climate metaphor, especially during this snowy winter, the likes of which must surely have kicked off past tipping points between climate warming periods and climate cooling periods. As in, the Little Ice Age. Or the ice age that froze Europe in only months 12,800 years ago.
 
It can all change so fast.
 
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