Word: ecologists
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Predictably, things have gotten worse since then. Robert Diaz, an ecologist at the College of William and Mary in Virginia who helped UNEP with its numbers, reports in the current issue of the journal Science that today there are more than 400 known dead zones along coastlines around the world, covering roughly 95,000 sq. mi. of seabed. Some of the dead zones that Diaz and his Swedish co-author identify in their review have been around for some time, but have only recently been studied. Many others appear to be new. About 8% of them, mainly those...
...problem is that no one knows how long the incubation period for facial tumor disease is. But every week that passes without Cedric falling sick makes Woods sleep better: "I'm quite confident now that he's immune." Hamish McCallum, the University of Tasmania ecologist coordinating the scientific effort to save the species, is hopeful too, but "we're not in any position, on the basis of one individual, to say we know what's going on," he says. "It's too early to unfurl the 'mission accomplished' banner." If Cedric or any of the Special Six do prove resistant...
...chunk of the Amazon was deforested in the second half of 2007 and even more was degraded by fire. Some scientists believe fires are now altering the local microclimate and could eventually reduce the Amazon to a savanna or even a desert. "It's approaching a tipping point," says ecologist Daniel Nepstad of the Woods Hole Research Center...
...science world assumed biofuels would be grown in parking lots. The deforestation of Indonesia has shown that's not the case. It turns out that the carbon lost when wilderness is razed overwhelms the gains from cleaner-burning fuels. A study by University of Minnesota ecologist David Tilman concluded that it will take more than 400 years of biodiesel use to "pay back" the carbon emitted by directly clearing peat lands to grow palm oil; clearing grasslands to grow corn for ethanol has a payback period of 93 years. The result is that biofuels increase demand for crops, which boosts...
...without which life as we know it might not be possible. (Think how expensive it would be if we had to pay to remove hundreds of thousands of tons of nitrogen from our waterways every year.) "These streams are the first line of defense," says Patrick Mulholland, an aquatic ecologist at Oak Ridge and the lead author of the study...