Thirty years ago the worlds oceans only produced 40% of the world oxygen supply.?

Question

Now the Oceans produce 60% of the worlds oxygen supply, the oceans have not enlarged themselves, so what happened? We people have removed 34% of the worlds oxygen producing trees, which has increased the oceans percentage. This means there is 34% less oxygen molecules in the atmostphier to reduce carbon by combining with the carbon to make CO2 which plants can change in to sugars and oxygen as well. We not only need to stop producing Green House Gases, but we need to increase the natural oxygen level by adding more trees to the world. The sad thing is all the answers we are looking at right now will reduce more plant life making the problem worse than it is now! These trees will keep the planet cooler, wetter, and produce life giving oxygen that we need. And we have the means to do this right now.

Answer 1

Sounds like people in the Mid-West have done something right.

They have had the wettest winter-spring in hundreds of years.  You also have Myanmar (Burma) in SE Asia, with their annual typhoon killing 84,500 people with the heavy rains, so they must have plenty of trees producing their weather.

Maybe they have too many trees?   How do you explain that?

Answer 2

In the process of photosynthesis, phytoplankton release oxygen into the water. Half of the world's oxygen is produced via phytoplankton photosynthesis. The other half is produced via photosynthesis on land by trees, shrubs, grasses, and other plants.

As green plants die and fall to the ground or sink to the ocean floor, a small fraction of their organic carbon is buried. It remains there for millions of years after taking the form of substances like oil, coal, and shale.

The oxygen released to the atmosphere when this buried carbon was photosynthesized hundreds of millions of years ago is why we have so much oxygen in the atmosphere today.

Today phytoplankton and terrestrial green plants maintain a steady balance in the amount of the Earth's atmospheric oxygen, which comprises about 20 percent of the mix of gasses.

The forests and oceans are not taking in more carbon dioxide or letting off more oxygen. But human activities such as burning oil and coal to drive our cars and heat our homes are increasing the amount of carbon dioxide released into the atmosphere.