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Ocean Dead Zones: These Oxygen Minimum Zones are Emitting One of the Worst Greenhouse Gases


(Photo : Getty Images)
Seafloor Sediments 
Fighting through seas and inadequate sleep, the researchers spent most of their week working side by side in a tiny stand-up refrigerator, making analyses of seafloor sediments to get more knowledge about the effects of low-oxygen conditions on the environment of deep-sea.
When organisms pass away, they go down through the water column, taking up oxygen in the sub-surface ocean when they decompose. This brings about bands of oxygen-depleted water referred to as oxygen minimum zones, or dead zones .
Most organisms cannot inhabit these unfavorable environments. Although they naturally occur in some regions, dead zones usually emerge following the washing of fertilizer and sewage downstream into coastal regions, prompting algal blooms which then die off and decompose. ....

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Ocean 'Dead Zones' Are Releasing One of The Worst Greenhouse Gases


Ocean Dead Zones Are Releasing One of The Worst Greenhouse Gases
BRETT JAMESON, THE CONVERSATION
6 JULY 2021
In October 2019, I set sail with a team of scientists aboard the Canadian Coast Guard Vessel John P. Tully in the northeast Pacific Ocean, off the coast of Vancouver Island.
Battling rough seas and lack of sleep, we spent the better part of a week working shoulder-to-shoulder in a small stand-up refrigerator, analyzing seafloor sediments to learn more about the effects of low-oxygen conditions on deep-sea environments.
 
When organisms die, they sink through the water column, consuming oxygen in the sub-surface ocean as they decompose. This leads to bands of oxygen-depleted water called oxygen minimum zones, or dead zones . ....

Vancouver Island , British Columbia , Brett Jameson , Pacific Ocean , Johnp Tully , Manolis Kogevinas , Bermuda Institute Of Ocean Sciences , Decade Of Ocean Science For Sustainable Development , United Nations , Canadian Coast Guard Vessel John , Bermuda Institute , Ocean Science , வான்கூவர் தீவு , பிரிட்டிஷ் கொலம்பியா , ப்ரெட் ஜேம்சன் , பெஸிஃபிக் கடல் , பெர்முடா நிறுவனம் ஆஃப் கடல் அறிவியல் , தசாப்தம் ஆஃப் கடல் அறிவியல் க்கு நிலையான வளர்ச்சி , ஒன்றுபட்டது நாடுகள் , பெர்முடா நிறுவனம் , கடல் அறிவியல் ,