Oceans are dying and marine creatures are suffocating

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Oceans are dying and marine creatures are suffocating

Postby Squire » 06 Jan 2018, 12:42

Is it too late to save the oceans? The oceans are a huge mass and the changes have hysteresis and inertia such that even stopping the current cause of global warming and nutrient discharge may take decades to show an effect.

I am afraid the human race is done for as there is insufficient support for serious action. World population is increasing at 83 million people a year which can only exacerbate the causes of global warming and ocean degradation.

The Oceans belong to mankind, and the problems are everybody's responsibiliity.

http://www.newsweek.com/oxygen-disappearing-worlds-oceans-alarmingly-rapid-pace-771406

OXYGEN IS DISAPPEARING FROM THE WORLD'S OCEANS AT AN ALARMINGLY RAPID PACE
BY SYDNEY PEREIRA ON 1/5/18 AT 6:00 AM
The ocean is running out of oxygen at a rapid speed—and the depletion could choke to death much of the marine life these waters support. A sweeping review published Thursday in Science documented the causes, consequences and solutions to what is technically called “deoxygenation.” They discovered a four-to-tenfold increase in areas of the ocean with little to no oxygen, which researchers say is alarming because half of Earth’s oxygen originates from the ocean.

Oxygen is crucial for marine life in the oceans. Without oxygen, marine life will die off or relocate. “Animal life in the ocean needs oxygen to breathe,” Lisa Levin, study co-author and biological oceanographer at Scripps Institution of Oceanography at the University of California San Diego, told Newsweek. “If we want a healthy ocean, we need an ocean with oxygen in it.”

The team of scientists is from the United Nations Intergovernmental Oceanographic Commission’s working group, created in 2016 and called the Global Ocean Oxygen Network. They noted that the amount of water in the open ocean without oxygen has quadrupled in 50 years. It is more than twice as bad for coastal waters, such as estuaries and seas. In those sites, low-oxygen areas have increased tenfold since 1950. This paper is the first to look at both ocean and coastal waters, which are often studied separately.

Deoxygenation directly results in devastation for people’s livelihoods. Fish kills in a single town in the Philippines cost over $10 million, according to the researchers. Coral reefs are valued at $172 billion per year, according to the Smithsonian’s National Museum of Natural History. Already stressed and bleaching corals, caused by increased sea surface temperatures, can be harmed by a lack of oxygen too.

“There are a whole bunch of livelihoods that depend on a healthy ocean that doesn't smell and have a lot of dead stuff in it,” Levin said.“When the oxygen gets very low in the ocean, animals leave if they can,” Levin added. Those species will relocate, get eaten or starve to death.

The change is connected with warmer ocean temperatures. “Warmer water holds less oxygen,” Levin explained. Also, increased surface temperatures make it more difficult for oxygen to reach relatively deeper parts of the ocean. The majority of oxygen loss is occurring at 300 to 2,200 feet deep. For reference, some parts of the ocean are 7 miles deep. Oxygen is typically replenished when surface water mixes with the deeper water, but when the oceans are hotter, there is less vertical mixing.

A second source of deoxygenation also plagues the coastal waters. Although this problem has nothing to do with warmer waters caused by human-induced climate change, humans aren’t off the hook. Excess nutrients from agriculture and sewage cause excess algae growth. The decay process of algae uses up the oxygen in a process called eutrophication, Levin said.
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Re: Oceans are dying and marine creatures are suffocating

Postby HBS Guy » 06 Jan 2018, 12:59

We are treating our oceans like a toilet, true enough. Warmer oceans can absorb less CO2 also so the dynamics are going to change there also.
Abbott & Co are going to cause the mother and father of all recessions—be prepared!
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Re: Oceans are dying and marine creatures are suffocating

Postby Squire » 08 Jan 2018, 14:00

HBS Guy wrote:We are treating our oceans like a toilet, true enough. Warmer oceans can absorb less CO2 also so the dynamics are going to change there also.


As we write more trash is flowing into the oceans. Developed countries have a moral obligation to finance the efforts of pollution prevention b undeveloped countries. However, as Trump is doing, Australia and others are standing back and allowing the persistence of pollution by not helping to stop it.

At least one piece of Australian garbage has washed ashore in the UK. Andrei Hicks, swimming with the turds.
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