CURRENT MOON

Monday, August 07, 2006

Dead Zone


Environmental News Network is reporting that the oxygen-free dead zone in the Pacific Ocean that is causing death to sea life along the Oregon Coast is due to global warming and is growing. Scientists studying the 70-mile-long zone of oxygen-depleted water, along the Continental Shelf between Florence and Lincoln City, conclude that it is being caused by explosive blooms of tiny plants known as phytoplankton, which die and sink to the bottom, then are eaten by bacteria which use up the oxygen in the water.

The recurring phytoplankton blooms are triggered by northerly wind, which generates a process known as upwelling in which nutrient-rich water is brought to the surface from lower depths.

"We are seeing wild swings from year to year in the timing and duration of the winds that are favorable for upwelling," Jane Lubchenco, professor of marine ecology at Oregon State and a member of the Pew Oceans Commission, said from Corvallis. "This increased variability in the winds is consistent with what we would expect under climate change."


Further,
Deep water fish, such as ling cod, wolf eels and rockfish, are showing up in Oregon tide pools, apparently driven toward shore by the advancing dead zone, said Lubchenco.

Although the dead zone has been documented along 70 miles of coast, dead crabs and fish also have been showing up along Washington's Olympic Peninsula, Barth said.

"If we continue like we are now, we could see some ecological shifts," Barth said. "It all depends on what happens with the warming and the greenhouse gases."


Anyone know what percentage of the world's food comes from the sea? We're already endangering whole populations of fish and seaweed (a major source of food in, for example, Japan) with overfishing and pollution of the seas. Now dead zones, caused by global warming caused by global climate change caused by greenhouse gases threaten to kill even larger percentages of the fish that are left. Just as the global population gets even larger and crops worldwide wither due to -- you guessed it -- global warming caused by global climate change caused by greenhouse gases. So if we can't eat fish and we can't eat plants, I guess we can evolve to digest the plastic crap we buy from WalMart. Or not.

5 comments:

Anne Johnson said...

On the other hand, the Sacred Thunderbirds have more than they can chew.

Anne Johnson said...

hey, friend, check out

http://ruraptureready.blogspot.com

I think that's the URL. Another fine pagan teaching tool, coming to us free on the Internet.

eRobin said...

Holy cow.

D-bones said...

Hi, did you take this horrific photograph? I am looking for an image such as this to pair with a story about dead zones. I work for the Marine Photobank, an ocean conservation image database (program of non-profit SeaWeb). Please let me know where the image comes from or if I can use it for non-commercial, conservation purposes. If you take pictures like this often you should look into becoming a contributor to our free resource. Check out www.marinephotobank.org. If you are interested in helping me out please email me at dharvey@seaweb.org. My name is Devin. Thanks

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