SOLYMONE BLOG: NUMBER OF OCEAN "DEAD ZONES" RAISING FAST

NUMBER OF OCEAN "DEAD ZONES" RAISING FAST

The number of "dead zones" in the world's oceans may have increased by a third in just two years, threatening fish stocks and the people who depend on them, the U.N. Environment Program said.

Fertilizers, sewage, fossil fuel burning and other pollutants have led to a doubling in the number of oxygen-deficient coastal areas every decade since the 1960's.
Now experts estimate there are 200 so-called ocean dead zones, compared with 150 two years ago.
The first "dead zones" — where pollution-fed algae remove oxygen from the water — were found in northern latitudes like the Chesapeake Bay on the U.S. East Coast and the Scandinavian fjords.
Today, the best known is in the Gulf of Mexico, where fertilizers and other algae-multiplying nutrients are dumped by the Mississippi River.
Others have been appearing off South America, Ghana, China, Japan, Australia, New Zealand, Portugal and Britain.
The UNEP said in a statement that experts warn "these areas are fast becoming major threats to fish stocks and thus to the people who depend upon fisheries for food and livelihoods."
Coral reefs get bleached when warm water forces out tiny algae that live in the coral, providing nutrients and giving reefs their vivid colors. Without the algae, corals whiten and eventually die.
"The new studies indicate healthy ecosystems exposed to minimal contamination are likely to recover and survive better than those stressed by pollution, dredging and other human-made impacts," Steiner said.
UNEP said the overall findings were given even more urgency by new modeling that shows up to 90 percent of the world's tropical coasts may be developed by 2030.

Source: Global News

NUMBER OF OCEAN "DEAD ZONES" RAISING FAST

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