Table of Contents
- Scientist have recently predicted that the dead zone in Gulf of Mexico will become larger
- Dead zones are areas of the ocean where oxygen has fallen to such low levels that most marine life cannot survive.
- Dead zones are reversible if their causes are reduced or eliminated.
Causes
- Rising sea temperatures-
- oxygen depletion.
- Nutrient pollution from sources such as agriculture and sewage, is responsible for a dramatic rise in “dead zones” in the world’s oceans.
- For each degree of ocean warming , oxygen. Concentration Goes down by 2percent. –Over the short term, the higher temperatures slow the rate of ocean circulation, exacerbating regional
- o It. Causes layers. Of ocean. Water to stratifys othe more. oxygen-rich surface water sare less able to mix with oxygen-poor waters from the deeper ocean. o The higher temperature sare putting more stress on marine species , causing their metabolisms to speed up and their need for oxygen to increase.
impacts of Dead Zones
-Impact on Global Warming-
-Impact on Corals- –
-Impact on Human- Humans also suffer at an economic level as Chile’s 2016 toxic tides wiped out 20% of its salmon stock, costing the country $1 billion in lost sales.
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