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el2dinuj79 發表於 2013-5-30 19:24

lululemon for girls a new generation of automated buoys and undersea probes

ave begun collapsing en masse . Overall, say the authors, 87% of the region’s glaciers are in retreat, the ice season has shortened by 90 days and, they write ominously, “These changes are accelerating.”That being the case, it’s not surprising that the creatures who live here are under enormous stress. Adélie penguin populations, which need ice and cold weather to survive, have plummeted by 90% in the northern part of the peninsula over the past three decades, says lead author Oscar Schofield, a marine scientist at Rutgers University, while chinstrap penguins, which prefer more temperate climates, have increased. “The penguin populations near Palmer Station [the largest U.S. base in that part of the continent] have flipflopped,[url=http://www.lululemononsales.com]lululemon for girls[/url],” says Schofield. “The area will probably be completely devoid of Adélies in five or ten years.”Unfortunately for the Adélies, they don’t migrate very happily. “They tend to come back to the same nesting place every year, so if there’s a shift in climate or food, it hits them pretty hard,” says Schofield. In this case, it’s both: not only has the ice gone into retreat, but so have the krill that form a key part of the birds’ diet—and the krill, in turn, are suffering as changing ocean temperatures have affected the phytoplankton the krill live on.The Adelies’ main hope, he says,[url=http://www.lululemononsales.com]lululemon pants sale[/url], lies in the fact that a few individuals in each population tend to be unusually adventurous and like to roam. “It could be that they’ll find a new area opening up, and form a new rookery. We haven’t seen that yet, but we’re looking for it.”They’re also looking for evidence of what they expect to be “dramatic changes” in fish, seals, whales and other creatures—although these haven’t been documented yet.For that reason, and also because the subsurface behavior of the ocean currents driving the local warming are poorly understood, Schofield and his co-authors argue that we need a much more aggressive campaign to monitor the Antarctic ocean intensely. It turns out, for example, that underwater “flooding events” with warmer water happen very rapidly, and far more frequently than a once-a-year ship excursion can capture. Fortunately, says Schofield, a new generation of automated buoys and undersea probes, carrying not only temperature but also salinity and biological sensors, can take up the slack. “It gives us a sustained presence,” he says—and the technology is such that many of the sensors can be controlled and monitored from the U.S. “The operators on campus,” he says, “often get a better view of what’s going on than we do on the ship.”As for why anyone should care about changes so far from where most of us live, endangered cute penguins are sufficient reason for lots of people. But for the rest of us, the changes going on in the Antarctic may well be a preview for what s on the way, in a rough sense, for the rest of the world s marine ecosystems. Coming soon, in short, to a seashore near you.At least one member of Congress, Rep. Joe Barton, a Texas Republican and former chairman of the Energy and Commerce Committee, is sympathetic to BP. Actually, he s rather mad at President Obama and Congress on BP s behalf. From his opening statement at today s hearing:I m speaking now totally for myself. I m not speaking for the Republican Party. I m not speaking for anybody in the House of Representatives but myself, but I m ashamed of what happened in the White House yesterday.I think it is a tragedy of the first proportion that a private corporation can be subjected to what I would characterize as a shakedown,[url=http://www.lululemononsales.com]lululemon outlets[/url], in this case, a $20 billion shakedown, with the attorney general of the United States, who is legitimately conducting a criminal investigation and has every right to do so to protect the interests of the American people, participating in what amounts to a $20 billion slush fund that s unprecedented in our nation s history, that s got no legal standing, and which sets, I think, a terrible precedent for the future.If I called you into my office, and I had tRelated articles:


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