How many years? How many years did I say this? Maybe now that it is documented it might register as the truth.

The phytoplankton that supplied Earth's breathable oxygen lives in the upper ocean where it changes temperatures quickly and absorbs the sun's heat first. There is little to no migration of ocean temperatures to the deep ocean. The deep ocean is too dark for the phytoplankton to live.

The echogram (click here) shows plankton at the surface in blue/green, fish near the bottom as red/brown spots, and the ocean floor as a red/brown line.

...Marine phytoplankton (click here) are responsible for ~50% of the CO₂ that is fixed annually worldwide, and contribute massively to other biogeochemical cycles in the oceans

Thus, at higher temperatures, eukaryotic phytoplankton seem to require a lower density of ribosomes to produce the required amounts of cellular protein. The reduction of phosphate-rich ribosomes² in warmer oceans will tend to produce higher organismal nitrogen (N) to phosphate (P) ratios, in turn increasing demand for N with consequences for the marine carbon cycle due to shifts towards N-limitation. Our integrative approach suggests that temperature plays a previously unrecognized, critical role in resource allocation and marine phytoplankton stoichiometry, with implications for the biogeochemical cycles that they drive....

Governments have been so stupid in not listening to scientists. The research that this requires does not occur overnight. If the research happened that quickly, scientists would not have to come forward, now would they?

The significant change in water temperature is no joke. This was a "Whiting Event" in Lake Ontario caught by NASA.

acquired August 24, 2013
...caused by changes in water temperature, (click here) which allows fine particles of calcium carbonate to form in the water column. Increased photosynthesis by phytoplankton and other microscopic marine life can also reduce the amount of carbon dioxide in the water column, changing the acidity and allowing calcium carbonate to form....

This thing is this; at the same time this Whiting Event occurred in Lake Ontario there were blooms of Blue-Green algae all across the USA. The Blue-Green algae was everywhere. It is known for neurotoxins.

This article is just an example of what occurred after the blooms were experienced.

By  Dave Golowenski 

For The Columbus Dispatch 

Sunday September 8, 2013 5:51 AM

The lime-colored and potentially toxic gumbo (click here) whose main ingredient — blue-green algae — inflicts the summer waters of Lake Erie usually at its fish-filled western end is a problem made by hand.
Blooms of the algae, also known as cyanobacteria, produce toxins that can harm fish, wildlife and people. Additionally, as the massive blooms die and decay, they create so-called “dead zones,” in which oxygen levels in the water are low enough to kill many types of life.
Dead zones famously plagued Lake Erie decades ago, then all but vanished during an environmental tsunami that forced governments and businesses to address pollution both from factories and that which was bypassing city water-treatment systems. The old problem, however, has come back, albeit with a different cause....

I don't consider Blue-Green Algae beneficial. It causes dead zones in water and wipes out fish populations, but, with this higher water temperature, it does seem to be the only algae able to thrive.

This is not a good thing. I mean, you talk about Plant of Weeds. Holy cow what a mess every ecosystem on Earth has become.