Showing posts with label algae blooms. Show all posts
Showing posts with label algae blooms. Show all posts

Thursday, July 7, 2016

Deny All You Want

But it will not alter the truth. Despite anthropogenic-climate-change denier Marco Rubio's publicly professed befuddlement over the causes of the toxic algae blooms in Florida and elsewhere, the answers are not difficult to find: agricultural runoff and climate change are two of the leading culprits.


Says Karl Haven, director of the Florida Sea Grant College Program:
Climate change is expected to result in increased temperatures of nearshore ocean water, and this could lead to increased growth of harmful microorganisms. These include algae that form noxious or toxic blooms, including red tides, and bacteria and other pathogens. This situation could have negative consequences in regard to human health and also Florida’s ocean-related economy.
And there is no reason for anyone to feel smug about this problem, as it can strike anywhere, including the Great Lakes. Especially hard hit over the years has been Lake Erie which, up to this point has suffered largely due to phosphorous runoff. The compounding effect of climate change will undoubtedly aggravate the problem there.

Climate Progress reports on the spreading scourge, which has now claimed even Alaska:
Last summer, one of the largest toxic algal blooms in recorded history hit the West Coast, shutting down fisheries from California to Washington. Scientists were seeing cells of the toxic bloom as far south as Mexico, and as far north as Homer, Alaska. At the time, Vera Trainer, manager of the Marine Biotoxin Program at NOAA’s Northwest Fisheries Science Center, told ThinkProgress that the bloom was uniquely widespread, “more so than we’ve seen in the past.”

But scientists now are saying that, with climate change, toxic algal blooms like the one seen last summer might become more common along the Pacific coastline, impacting marine communities as far north as Alaska with much more consistency than in the past.

In a new study published in the journal Harmful Algae, researchers from the National Oceanic and Atmospheric Administration (NOAA) found the presence of domoic acid — the same toxic acid that shut down West Coast fisheries last summer — in marine mammals along the Alaskan coastline. This was a surprise, because Alaskan waters were previously thought to be too cold to encourage the growth of domic-producing algal blooms. [Emphasis added]
That’s because algae thrive in warmer waters, which both encourage growth in certain kinds of algae and discourage a mixing of ocean waters. Alaskan waters are some of the most rapidly warming waters in the world, having risen by three degrees Celsius in the past decade.

“The waters are warming, the sea ice is melting, and we are getting more light in those waters,” Lefebvre told the Washington Post. “Those conditions, without a doubt, are more favorable for algal growth. With that comes harmful algae.”
Given our seemingly endless capacity for denial, scenes like this are sure to become more common and widespread very, very soon:


Tuesday, August 25, 2015

More Canaries

My guess is only the willfully ignorant, the profoundly stupid, and the ideologically blind do not realize the environmental peril we are experiencing, one primarily but not exclusively driven by climate change. Monster storms, massive wildfires and record droughts are just three of the more obvious symptoms of a critically ill planet. But it is not hard, if we look just a little beyond melodramatic headlines and visuals, to see that the problem is leaving no ecosystem unscathed. The world's oceans are one such ecosystem, as rising temperatures are wreaking largely unseen havoc.

The latest evidence of earth's fever is the death of 30 whales in the Gulf of Alaska:
Since May 2015, 14 fin whales, 11 humpback whales, one gray whale and four unidentified specimens have been found dead along shorelines in the Gulf of Alaska, nearly half of them in the Kodiak Archipelago. Other dead whales have been reported off the coast of British Columbia, including four humpbacks and one sperm whale.
Labelling it an “unusual mortality event,” the National Oceanic and Atmospheric Administration says the deaths are three times the average for the region, and the fact that little or no trauma has thus far been found on the whales has led to speculation that they are the victims of rising ocean temperatures and a very toxic and extensive consequent algal blooms:
Over the past two years, a large mass of warm water that climatologists have dubbed “the blob” has persisted in the north Pacific, and El NiƱo 2015 is pushing more warm water into the region.

The unusually warm and calm seas are believed to be behind a series of toxin-producing algae blooms – record-breaking in size and duration – stretching from southern California to the Aleutian Islands. Clams sampled near the town of Sand Point, Alaska were found to have toxin levels more than 80 times what the FDA says is safe for human consumption, said Bruce Wright, a scientist who studies toxic algal blooms for the Aleutian and Pribilof Islands Association. The levels were ten times anything Wright had previously recorded.
All of this suggests we are bearing witness to yet another canary in the coalmine, one of many that all of our major political leaders and a majority of the population will almost certainly continue to ignore.