Topic: Dead zones in the oceans getting much larger
Brian White
rabble-rouser
Babbler # 8013
posted 28 October 2006 09:09 PM
I saw in a science magazine that the dead zones may be a really serious issue. Nitrates are currently going into the seas round the world at a super high rate. Then you get algal blooms and all that plant crap dies and falls to the bottom where anerobic bacteria lap it up. The result is a high sulphide zone of death with almost no oxygen disolved in the water. Scientists think that in the past such conditions spread so much that the entire ocean became a dead zone with anerobic bacteria replacing algae as the bottom of the food chain. A very short food chain that sucked oxygen out of the atmosphere and eventually affected life on land badly too!
From: Victoria Bc | Registered: Jan 2005
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