University of Washington and NOAA Study: Decreasing pH may affect salmon ability to smell

[wildmanyeah]

Well I tried but I have no idea altho I found these interesting to read.


Protecting future ecosystems
Richard is studying the fossils on the Jurassic coast to understand how future changes to the climate could impact marine ecosystems.

The ammonites were living about two million years after a large mass extinction event called the Late Triassic extinction. It was caused by volcanic activity as the ancient landmass Pangaea started to break up.

The volcanoes released large amounts of carbon dioxide into the air. It is estimated that more than 50% of marine genera were wiped out, including some large marine reptiles and reef-building creatures.

http://www.nhm.ac.uk/discover/life-in-jurassic-oceans.html



http://droyer.web.wesleyan.edu/Honisch_et_al_2012_Science_ocean_acidification.pdf

 

[agentaqua]

I'm not exactly sure how to interpret that graph? As temperature rises co2 solubillity decreases? Am I reading it correctly?

Yes - same for all gasses. Which is why global warming has many effects - including lowering oxygen carrying ability of water...

 

[agentaqua]

Yes the blue line at 1 atmosphere represents reality Although I guess the rest of it shows that the deeper you go in the ocean or as pressure increases it has the potential to hold or sequester more co2 Atlest that’s the way I read it?

Totally! Which is why divers can get the bends (nitrogen narcosis) breathing compressed air at depth. All gasses - including carbon dioxide, oxygen and nitrogen - have greater solubility at higher pressures - including the higher pressures at depths. Every 33 feet in another atmosphere of pressure. Take the pressure off (like taking a cap off a coke bottle) releases that pressure and gas supersaturation can occur - and the gas bubbles out. Same reason rockfish get the bends/barotrauma...

 

[agentaqua]

Well I tried but I have no idea altho I found these interesting to read.
Protecting future ecoystems
Richard is studying the fossils on the Jurassic coast to understand how future changes to the climate could impact marine ecosystems.
The ammonites were living about two million years after a large mass extinction event called the Late Triassic extinction. It was caused by volcanic activity as the ancient landmass Pangaea started to break up.
The volcanoes released large amounts of carbon dioxide into the air. It is estimated that more than 50% of marine genera were wiped out, including some large marine reptiles and reef-building creatures.
http://www.nhm.ac.uk/discover/life-in-jurassic-oceans.html
View attachment 41991
http://droyer.web.wesleyan.edu/Honisch_et_al_2012_Science_ocean_acidification.pdf

Good picture, WMY. The bicarbonate buffering system in saltwater is particularly important - and in contrast to the absence of one in the FW... very different WQ dynamics...