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Recent study in Nature: Geoscience shows the shells of sea snails dissolving in areas most effected by increases on CO2 levels.
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1635.html
"Carbon dioxide (CO2), the main greenhouse gas, increased from its pre-industrial concentration of about 278 parts per million (ppm) to more than 391 ppm in September 2012, with the rate of rise now at 1.8 ppm per year.
"We have already passed the tipping point of 350 ppm; above that level, life as we have known it cannot be sustained.
"The CO2 concentration is higher now than at any time in the last 15 million years..."
"'By the time the concentration reaches around 550 ppm (corresponding to a warming of about 2.4°C in the 2060s), it is likely that coral reefs in many areas would start to dissolve,' the report reads.
'The combination of thermally induced bleaching events, ocean acidification, and sea-level rise threatens large fractions of coral reefs even at 1.5°C global warming. The regional extinction of entire coral reef eco-systems, which could occur well before 4°C is reached, would have profound consequences for their dependent species and for the people who depend on them for food, income, tourism, and shoreline protection.'
"The report projects that the rates of change in ocean acidity over the next century will be 'unparalleled in Earths history.'
Chris Hedges: Stand Still for the Apocalypse - Chris Hedges' Columns - Truthdig
Recent study in Nature: Geoscience shows the shells of sea snails dissolving in areas most effected by increases on CO2 levels.
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Recent study in Nature: Geoscience shows the shells of sea snails dissolving in areas most effected by increases on CO2 levels.
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1635.html
Right after you prove that "shelled creatures in the oceans evolved when atmospheric CO2 levels would have been measured in the thousands of parts per million." Unless you believe Exxon Mobile invented chitin?"Carbon dioxide (CO2), the main greenhouse gas, increased from its pre-industrial concentration of about 278 parts per million (ppm) to more than 391 ppm in September 2012, with the rate of rise now at 1.8 ppm per year.
"We have already passed the tipping point of 350 ppm; above that level, life as we have known it cannot be sustained.
"The CO2 concentration is higher now than at any time in the last 15 million years..."
"'By the time the concentration reaches around 550 ppm (corresponding to a warming of about 2.4°C in the 2060s), it is likely that coral reefs in many areas would start to dissolve,' the report reads.
'The combination of thermally induced bleaching events, ocean acidification, and sea-level rise threatens large fractions of coral reefs even at 1.5°C global warming. The regional extinction of entire coral reef eco-systems, which could occur well before 4°C is reached, would have profound consequences for their dependent species and for the people who depend on them for food, income, tourism, and shoreline protection.'
"The report projects that the rates of change in ocean acidity over the next century will be 'unparalleled in Earths history.'
Chris Hedges: Stand Still for the Apocalypse - Chris Hedges' Columns - Truthdig
Do explain how it is that most of the "shelled creatures" in the ocean evolved when atmospheric CO2 levels would have been measured in the thousands of parts per million. Or are you of the belief that the earth was created a few thousand years ago and has always been pretty much the same as we see it today?
Right after you prove that "shelled creatures in the oceans evolved when atmospheric CO2 levels would have been measured in the thousands of parts per million." Unless you believe Exxon Mobile invented chitin?"Carbon dioxide (CO2), the main greenhouse gas, increased from its pre-industrial concentration of about 278 parts per million (ppm) to more than 391 ppm in September 2012, with the rate of rise now at 1.8 ppm per year.
"We have already passed the tipping point of 350 ppm; above that level, life as we have known it cannot be sustained.
"The CO2 concentration is higher now than at any time in the last 15 million years..."
"'By the time the concentration reaches around 550 ppm (corresponding to a warming of about 2.4°C in the 2060s), it is likely that coral reefs in many areas would start to dissolve,' the report reads.
'The combination of thermally induced bleaching events, ocean acidification, and sea-level rise threatens large fractions of coral reefs even at 1.5°C global warming. The regional extinction of entire coral reef eco-systems, which could occur well before 4°C is reached, would have profound consequences for their dependent species and for the people who depend on them for food, income, tourism, and shoreline protection.'
"The report projects that the rates of change in ocean acidity over the next century will be 'unparalleled in Earths history.'
Chris Hedges: Stand Still for the Apocalypse - Chris Hedges' Columns - Truthdig
Do explain how it is that most of the "shelled creatures" in the ocean evolved when atmospheric CO2 levels would have been measured in the thousands of parts per million. Or are you of the belief that the earth was created a few thousand years ago and has always been pretty much the same as we see it today?
Recent study in Nature: Geoscience shows the shells of sea snails dissolving in areas most effected by increases on CO2 levels.
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1635.html
Seems like the study is limited to areas where deep cold water (supersaturated with CO2) are mixing with surface waters. Has virtually NOTHING to do with the man-made CO2 contributions to the ocean as a whole since these areas would ALWAYS have whacked out CO2/Calcium chemistry.
Can't wait til NOAA pulls another oyster sham and tries to kill THESE larvae with 10X doses of CO2 -- only to create healthier happier snails..
Right after you prove that "shelled creatures in the oceans evolved when atmospheric CO2 levels would have been measured in the thousands of parts per million." Unless you believe Exxon Mobile invented chitin?
Fossil Mollusks
Mollusks first appear in the fossil record about 545 million years ago in earliest Cambrian time, but the record of their origin and early evolution has not been discovered in the fossil record. By late Cambrian time (~520-505 million years ago) most of the modern groups of mollusks can be found in some primitive form as fossils occurring in marine deposits. During the Ordovician (~505-438 million years ago) a major radiation of mollusks occurred, with thousands of species of mollusks appearing in the fossil record of that time.
During the Mesozoic (~245-65 million years ago) the ammonites, a relative of the modern chambered nautilus, flourished and are an important part of the fossil record, but they became extinct at the end of the Cretaceous at the same time as the dinosaurs. Many types of clams and snails also disappeared at the end of the Cretaceous, including the rudists, a group of bivalved mollusks that lived much as modern reef-building organisms do. The disappearance of these marine animals opened up environmental niches to be filled by a radiation of new species of all types of animals at the beginning of the Cenozoic.
The Cenozoic (beginning around 65 million years ago to the present) marks the time period when the modern groups of mollusks evolved, beginning with the marine clams and snails following the end of the Mesozoic. During the last million years land and fresh-water mollusks have evolved rapidly, occupying the terrestrial realm to an extent never seen in their fossil record.
"Carbon dioxide (CO2), the main greenhouse gas, increased from its pre-industrial concentration of about 278 parts per million (ppm) to more than 391 ppm in September 2012, with the rate of rise now at 1.8 ppm per year.
"We have already passed the tipping point of 350 ppm; above that level, life as we have known it cannot be sustained.
"The CO2 concentration is higher now than at any time in the last 15 million years..."
"'By the time the concentration reaches around 550 ppm (corresponding to a warming of about 2.4°C in the 2060s), it is likely that coral reefs in many areas would start to dissolve,' the report reads.
'The combination of thermally induced bleaching events, ocean acidification, and sea-level rise threatens large fractions of coral reefs even at 1.5°C global warming. The regional extinction of entire coral reef eco-systems, which could occur well before 4°C is reached, would have profound consequences for their dependent species and for the people who depend on them for food, income, tourism, and shoreline protection.'
"The report projects that the rates of change in ocean acidity over the next century will be 'unparalleled in Earths history.'
Chris Hedges: Stand Still for the Apocalypse - Chris Hedges' Columns - Truthdig
Do explain how it is that most of the "shelled creatures" in the ocean evolved when atmospheric CO2 levels would have been measured in the thousands of parts per million. Or are you of the belief that the earth was created a few thousand years ago and has always been pretty much the same as we see it today?
"Carbon dioxide (CO2), the main greenhouse gas, increased from its pre-industrial concentration of about 278 parts per million (ppm) to more than 391 ppm in September 2012, with the rate of rise now at 1.8 ppm per year.
"We have already passed the tipping point of 350 ppm; above that level, life as we have known it cannot be sustained.
"The CO2 concentration is higher now than at any time in the last 15 million years..."
"'By the time the concentration reaches around 550 ppm (corresponding to a warming of about 2.4°C in the 2060s), it is likely that coral reefs in many areas would start to dissolve,' the report reads.
'The combination of thermally induced bleaching events, ocean acidification, and sea-level rise threatens large fractions of coral reefs even at 1.5°C global warming. The regional extinction of entire coral reef eco-systems, which could occur well before 4°C is reached, would have profound consequences for their dependent species and for the people who depend on them for food, income, tourism, and shoreline protection.'
"The report projects that the rates of change in ocean acidity over the next century will be 'unparalleled in Earths history.'
Chris Hedges: Stand Still for the Apocalypse - Chris Hedges' Columns - Truthdig
Do explain how it is that most of the "shelled creatures" in the ocean evolved when atmospheric CO2 levels would have been measured in the thousands of parts per million. Or are you of the belief that the earth was created a few thousand years ago and has always been pretty much the same as we see it today?
The ones that evolved in higher CO2 times were adapted to it. Present day shellfish are adapted to lower CO2 concentrations. It's precisely because it's an old-earth that makes the change significant. it takes a long time for species to adapt and many become extinct in the process. Considering that they're at the bottom of the food chain, it should be concerning to those at the top.
Recent study in Nature: Geoscience shows the shells of sea snails dissolving in areas most effected by increases on CO2 levels.
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo1635.html
The ones that evolved in higher CO2 times were adapted to it. Present day shellfish are adapted to lower CO2 concentrations.
Do explain how it is that most of the "shelled creatures" in the ocean evolved when atmospheric CO2 levels would have been measured in the thousands of parts per million. Or are you of the belief that the earth was created a few thousand years ago and has always been pretty much the same as we see it today?
The ones that evolved in higher CO2 times were adapted to it. Present day shellfish are adapted to lower CO2 concentrations. It's precisely because it's an old-earth that makes the change significant. it takes a long time for species to adapt and many become extinct in the process. Considering that they're at the bottom of the food chain, it should be concerning to those at the top.
I suggest you read the post above.
Ocean acids eating away at the poor snails
How acidic is this snail vaporizing water whats the pH
The ones that evolved in higher CO2 times were adapted to it. Present day shellfish are adapted to lower CO2 concentrations.
Modern mollusks evolved with atmospheric CO2 over 1000ppm. Your argument doesn't hold.
The ones that evolved in higher CO2 times were adapted to it. Present day shellfish are adapted to lower CO2 concentrations. It's precisely because it's an old-earth that makes the change significant. it takes a long time for species to adapt and many become extinct in the process. Considering that they're at the bottom of the food chain, it should be concerning to those at the top.
I suggest you read the post above.
I did. It would only make sense if you believed in a young earth. Perhaps you should reread my response. What about "time to adapt" don't you understand?
