After spending several months abroad in the autumn of 2015 I returned to the U.S. just in time for Christmas and New Years, as well as the lead-up to the Super Bowl. At the same time, the presidential campaign was starting to wind up, with Trump already spreading his poisoned rhetoric and the Democrats hopelessly divided and apparently unable to offer any meaningful positive message to counter the GOP hatefest.
But what I really noticed is that most Americans weren’t actually paying much attention to the unfolding election. The GOP primary was just another sideshow in the circus of consumerism and entertainment that has become of the mainstay of American civic life. To me, it felt like what a decaying Rome must have been experiencing as the empire waned, the masses entertained by excessive spectacles in the Coliseum, while the ruling class made its last-ditch effort to exploit society for short-term gain. It all crystalized for me in late January, when I saw three stories juxtaposed in the Denver Post: one on the Flint water crisis, a second on Trump’s ascendancy and a third on the armed takeover of a wildlife preserve by the Bundy malcontents. Taken together, the three articles represent the decline of American civilization. I wrote about it here.
In the West, the fracturing of the consensus on American values has often played out in the realm of public lands management, and nowhere is this more apparent than in discussions of endangered species. I saw this trend reinforced in mid-January at a Denver meeting on wolves, where it became clear that, for all the efforts that have been made, the reactionary opposition to predator restoration still prevails in the establishment. More in this in my wolf restoration post on Medium.
A new survey of the Great Barrier Reef shows that an ocean heat wave that peaked last March killed up to 95 percent of corals in some parts of the northern reef. And in the aftermath of the worst coral-bleaching event on record, predatory snails are now taking on toll on the remaining corals.
According to the ARC Centre of Excellence for Coral Reef Studies, researchers recently returned to 83 reefs they surveyed at the height of the bleaching event.
Study identifies bleaching and mortality thresholds for imperiled coral reefs
The steady rise in ocean temperatures projected for the next few decades will put more and more corals at risk of bleaching, as the warm water simply overwhelms their thermal tolerance mechanisms.
Recent research along the Great Barrier Reef shows that corals have been able to survive past bleaching events because they were acclimated to warmer temperatures by being exposed to a pattern of gradually warming waters in the lead up to each episode. But global warming is likely to change that, the scientists said.
Before long, temperature increases of as little as 0.5 degrees Celsius may push many corals over the edge as the warm water causes them to expel the algae-like dinoflagellates that help keep them alive and give them their color.
Lead author Dr. Tracy Ainsworth from Coral CoE said bleaching is like a marathon for corals.
Australian scientists have closely tracked the status of reefs along their coastline for the past few months as it became evident that this year’s strong El Niño would raise ocean temperatures above the limit of what most corals species can survive, and the latest survey results confirm their worst fears. In a press release, the researchers said the impacts are still unfolding along the 2,300-long reef, with the worst damage to the central and northern sections. Continue reading “Global warming kills a third of Great Barrier Reef’s corals”→
FRISCO — Ocean researchers have updated their warnings of potential coral reef bleaching based on unusually warm ocean temperatures across the north Pacific, equatorial Pacific, and western Atlantic oceans this summer.
Scientists with NOAA’s coral reef watch say they expect bleaching of corals on Northern Hemisphere reefs through October, potentially leading to the death of corals over a wide area and affecting the long-term supply of fish and shellfish.