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6 total messages Started by James Fox Fri, 02 Mar 2012 00:39
Ocean acidification may be worst in 300 million years. Global-warming blamed.
#178
Author: James Fox
Date: Fri, 02 Mar 2012 00:39
63 lines
4028 bytes
http://www.google.com/hostednews/afp/article/ALeqM5i_Z1zrB_r470q
EJTpTvNGCLIZOew?docId=CNG.972672bf2c229393667b758b16f9bd6a.491

WASHINGTON � High levels of pollution may be turning the 
planet's oceans acidic at a faster rate than at any time in the 
past 300 million years, with unknown consequences for future sea 
life, researchers said Thursday.

The acidification may be worse than during four major mass 
extinctions in history when natural pulses of carbon from 
asteroid impacts and volcanic eruptions caused global 
temperatures to soar, said the study in the journal Science.

An international team of researchers from the United States, 
Britain, Spain, Germany and the Netherlands examined hundreds of 
paleoceanographic studies, including fossils wedged in seafloor 
sediment from millions of years ago.

They found only one time in history that came close to what 
scientists are seeing today in terms of ocean life die-off -- a 
mysterious period known as the Paleocene-Eocene Thermal Maximum 
about 56 million years ago.

Though the reason for the carbon upsurge back then remains a 
source of debate, scientists believe that the doubling of 
harmful emissions drove up global temperatures by about six 
degrees Celsius and caused big losses of ocean life.

Oceans are particularly vulnerable because they soak up excess 
carbon dioxide from the air which turns the waters more acidic, 
a state that can kill corals, mollusks and other forms of reef 
and shell organisms.

"We know that life during past ocean acidification events was 
not wiped out -- new species evolved to replace those that died 
off," said lead author Barbel Honisch, a paleoceanographer at 
Columbia University's Lamont-Doherty Earth Observatory.

"But if industrial carbon emissions continue at the current 
pace, we may lose organisms we care about -- coral reefs, 
oysters, salmon."

Honish and colleagues said the current rate of ocean 
acidification is at least 10 times faster than it was 56 million 
years ago.

"The geological record suggests that the current acidification 
is potentially unparalleled in at least the last 300 million 
years of Earth history, and raises the possibility that we are 
entering an unknown territory of marine ecosystem change," said 
co-author Andy Ridgwell of Bristol University.

The UN Environment Program released a report in 2010 that warned 
carbon emissions from fossil fuels may bear a greater risk for 
the marine environment than previously thought.

Rising acidity levels have an impact on calcium-based lifeforms, 
ranging from tiny organisms called ptetropods that are the 
primary food source, to crabs, fish, lobsters and coral, it said.

The UN report called for cuts in human-made CO2 emissions to 
reduce acidification and support for further work to quantify 
the risk and identify species that could be most in peril.
Re: Ocean acidification may be worst in 300 million years. Global-warming blamed.
#179
Author: Unum
Date: Fri, 02 Mar 2012 03:09
67 lines
4920 bytes
On 3/1/2012 6:39 PM, James Fox wrote:
> http://www.google.com/hostednews/afp/article/ALeqM5i_Z1zrB_r470q
> EJTpTvNGCLIZOew?docId=CNG.972672bf2c229393667b758b16f9bd6a.491
>
> WASHINGTON � High levels of pollution may be turning the
> planet's oceans acidic at a faster rate than at any time in the
> past 300 million years, with unknown consequences for future sea
> life, researchers said Thursday.
>
> The acidification may be worse than during four major mass
> extinctions in history when natural pulses of carbon from
> asteroid impacts and volcanic eruptions caused global
> temperatures to soar, said the study in the journal Science.
>
> An international team of researchers from the United States,
> Britain, Spain, Germany and the Netherlands examined hundreds of
> paleoceanographic studies, including fossils wedged in seafloor
> sediment from millions of years ago.
>
> They found only one time in history that came close to what
> scientists are seeing today in terms of ocean life die-off -- a
> mysterious period known as the Paleocene-Eocene Thermal Maximum
> about 56 million years ago.
>
> Though the reason for the carbon upsurge back then remains a
> source of debate, scientists believe that the doubling of
> harmful emissions drove up global temperatures by about six
> degrees Celsius and caused big losses of ocean life.
>
> Oceans are particularly vulnerable because they soak up excess
> carbon dioxide from the air which turns the waters more acidic,
> a state that can kill corals, mollusks and other forms of reef
> and shell organisms.
>
> "We know that life during past ocean acidification events was
> not wiped out -- new species evolved to replace those that died
> off," said lead author Barbel Honisch, a paleoceanographer at
> Columbia University's Lamont-Doherty Earth Observatory.
>
> "But if industrial carbon emissions continue at the current
> pace, we may lose organisms we care about -- coral reefs,
> oysters, salmon."
>
> Honish and colleagues said the current rate of ocean
> acidification is at least 10 times faster than it was 56 million
> years ago.
>
> "The geological record suggests that the current acidification
> is potentially unparalleled in at least the last 300 million
> years of Earth history, and raises the possibility that we are
> entering an unknown territory of marine ecosystem change," said
> co-author Andy Ridgwell of Bristol University.
>
> The UN Environment Program released a report in 2010 that warned
> carbon emissions from fossil fuels may bear a greater risk for
> the marine environment than previously thought.
>
> Rising acidity levels have an impact on calcium-based lifeforms,
> ranging from tiny organisms called ptetropods that are the
> primary food source, to crabs, fish, lobsters and coral, it said.
>
> The UN report called for cuts in human-made CO2 emissions to
> reduce acidification and support for further work to quantify
> the risk and identify species that could be most in peril.

The denialist nutjobs can't even come up with a blog post
to cite in response to this?
Re: Ocean acidification may be worst in 300 million years. Global-warming blamed.
#177
Author: James
Date: Fri, 02 Mar 2012 17:01
70 lines
5065 bytes
"Unum" <noneof@yourbusiness.com> wrote in message
news:jipdm5$i1q$1@dont-email.me
> On 3/1/2012 6:39 PM, James Fox wrote:
>> http://www.google.com/hostednews/afp/article/ALeqM5i_Z1zrB_r470q
>> EJTpTvNGCLIZOew?docId=CNG.972672bf2c229393667b758b16f9bd6a.491
>>
>> WASHINGTON � High levels of pollution may be turning the
>> planet's oceans acidic at a faster rate than at any time in the
>> past 300 million years, with unknown consequences for future sea
>> life, researchers said Thursday.
>>
>> The acidification may be worse than during four major mass
>> extinctions in history when natural pulses of carbon from
>> asteroid impacts and volcanic eruptions caused global
>> temperatures to soar, said the study in the journal Science.
>>
>> An international team of researchers from the United States,
>> Britain, Spain, Germany and the Netherlands examined hundreds of
>> paleoceanographic studies, including fossils wedged in seafloor
>> sediment from millions of years ago.
>>
>> They found only one time in history that came close to what
>> scientists are seeing today in terms of ocean life die-off -- a
>> mysterious period known as the Paleocene-Eocene Thermal Maximum
>> about 56 million years ago.
>>
>> Though the reason for the carbon upsurge back then remains a
>> source of debate, scientists believe that the doubling of
>> harmful emissions drove up global temperatures by about six
>> degrees Celsius and caused big losses of ocean life.
>>
>> Oceans are particularly vulnerable because they soak up excess
>> carbon dioxide from the air which turns the waters more acidic,
>> a state that can kill corals, mollusks and other forms of reef
>> and shell organisms.
>>
>> "We know that life during past ocean acidification events was
>> not wiped out -- new species evolved to replace those that died
>> off," said lead author Barbel Honisch, a paleoceanographer at
>> Columbia University's Lamont-Doherty Earth Observatory.
>>
>> "But if industrial carbon emissions continue at the current
>> pace, we may lose organisms we care about -- coral reefs,
>> oysters, salmon."
>>
>> Honish and colleagues said the current rate of ocean
>> acidification is at least 10 times faster than it was 56 million
>> years ago.
>>
>> "The geological record suggests that the current acidification
>> is potentially unparalleled in at least the last 300 million
>> years of Earth history, and raises the possibility that we are
>> entering an unknown territory of marine ecosystem change," said
>> co-author Andy Ridgwell of Bristol University.
>>
>> The UN Environment Program released a report in 2010 that warned
>> carbon emissions from fossil fuels may bear a greater risk for
>> the marine environment than previously thought.
>>
>> Rising acidity levels have an impact on calcium-based lifeforms,
>> ranging from tiny organisms called ptetropods that are the
>> primary food source, to crabs, fish, lobsters and coral, it said.
>>
>> The UN report called for cuts in human-made CO2 emissions to
>> reduce acidification and support for further work to quantify
>> the risk and identify species that could be most in peril.
>
> The denialist nutjobs can't even come up with a blog post
> to cite in response to this?
Ocean acidification may not be worst in 300 million years.
Re: Ocean acidification may be worst in 300 million years. Global-warming blamed.
#171
Author: alanmc95210
Date: Sat, 03 Mar 2012 05:39
97 lines
5634 bytes
On Mar 2, 9:01 am, "James" <kingk...@iglou.com> wrote:
> "Unum" <non...@yourbusiness.com> wrote in message
>
> news:jipdm5$i1q$1@dont-email.me
>
>
>
>
>
>
>
> > On 3/1/2012 6:39 PM, James Fox wrote:
> >>http://www.google.com/hostednews/afp/article/ALeqM5i_Z1zrB_r470q
> >> EJTpTvNGCLIZOew?docId=CNG.972672bf2c229393667b758b16f9bd6a.491
>
> >> WASHINGTON — High levels of pollution may be turning the
> >> planet's oceans acidic at a faster rate than at any time in the
> >> past 300 million years, with unknown consequences for future sea
> >> life, researchers said Thursday.
>
> >> The acidification may be worse than during four major mass
> >> extinctions in history when natural pulses of carbon from
> >> asteroid impacts and volcanic eruptions caused global
> >> temperatures to soar, said the study in the journal Science.
>
> >> An international team of researchers from the United States,
> >> Britain, Spain, Germany and the Netherlands examined hundreds of
> >> paleoceanographic studies, including fossils wedged in seafloor
> >> sediment from millions of years ago.
>
> >> They found only one time in history that came close to what
> >> scientists are seeing today in terms of ocean life die-off -- a
> >> mysterious period known as the Paleocene-Eocene Thermal Maximum
> >> about 56 million years ago.
>
> >> Though the reason for the carbon upsurge back then remains a
> >> source of debate, scientists believe that the doubling of
> >> harmful emissions drove up global temperatures by about six
> >> degrees Celsius and caused big losses of ocean life.
>
> >> Oceans are particularly vulnerable because they soak up excess
> >> carbon dioxide from the air which turns the waters more acidic,
> >> a state that can kill corals, mollusks and other forms of reef
> >> and shell organisms.
>
> >> "We know that life during past ocean acidification events was
> >> not wiped out -- new species evolved to replace those that died
> >> off," said lead author Barbel Honisch, a paleoceanographer at
> >> Columbia University's Lamont-Doherty Earth Observatory.
>
> >> "But if industrial carbon emissions continue at the current
> >> pace, we may lose organisms we care about -- coral reefs,
> >> oysters, salmon."
>
> >> Honish and colleagues said the current rate of ocean
> >> acidification is at least 10 times faster than it was 56 million
> >> years ago.
>
> >> "The geological record suggests that the current acidification
> >> is potentially unparalleled in at least the last 300 million
> >> years of Earth history, and raises the possibility that we are
> >> entering an unknown territory of marine ecosystem change," said
> >> co-author Andy Ridgwell of Bristol University.
>
> >> The UN Environment Program released a report in 2010 that warned
> >> carbon emissions from fossil fuels may bear a greater risk for
> >> the marine environment than previously thought.
>
> >> Rising acidity levels have an impact on calcium-based lifeforms,
> >> ranging from tiny organisms called ptetropods that are the
> >> primary food source, to crabs, fish, lobsters and coral, it said.
>
> >> The UN report called for cuts in human-made CO2 emissions to
> >> reduce acidification and support for further work to quantify
> >> the risk and identify species that could be most in peril.
>
> > The denialist nutjobs can't even come up with a blog post
> > to cite in response to this?
>
> Ocean acidification may not be worst in 300 million years.

There's 40 to 60 times as much carbon in the  oceans NOW as there is
in the atmosphere.  We couldn't change the acidity of the oceans
significantly if we TRIED.-

http://folk.uio.no/tomvs/esef/ESEFVO1.pdf

"The distribution of CO2 between
atmosphere, hydrosphere, and lithosphere;
minimal influence from anthropogenic CO2
on the global "Greenhouse Effect".
Tom V. Segalstad
Mineralogical-Geological Museum
University of Oslo"


- A. McIntire
Re: Ocean acidification may be worst in 300 million years. Global-warming blamed.
#172
Author: Bret Cahill
Date: Sat, 03 Mar 2012 05:57
65 lines
4638 bytes
> WASHINGTON — High levels of pollution may be turning the
> planet's oceans acidic at a faster rate than at any time in the
> past 300 million years, with unknown consequences for future sea
> life, researchers said Thursday.
>
> The acidification may be worse than during four major mass
> extinctions in history when natural pulses of carbon from
> asteroid impacts and volcanic eruptions caused global
> temperatures to soar, said the study in the journal Science.
>
> An international team of researchers from the United States,
> Britain, Spain, Germany and the Netherlands examined hundreds of
> paleoceanographic studies, including fossils wedged in seafloor
> sediment from millions of years ago.
>
> They found only one time in history that came close to what
> scientists are seeing today in terms of ocean life die-off -- a
> mysterious period known as the Paleocene-Eocene Thermal Maximum
> about 56 million years ago.
>
> Though the reason for the carbon upsurge back then remains a
> source of debate, scientists believe that the doubling of
> harmful emissions drove up global temperatures by about six
> degrees Celsius and caused big losses of ocean life.
>
> Oceans are particularly vulnerable because they soak up excess
> carbon dioxide from the air which turns the waters more acidic,
> a state that can kill corals, mollusks and other forms of reef
> and shell organisms.
>
> "We know that life during past ocean acidification events was
> not wiped out -- new species evolved to replace those that died
> off," said lead author Barbel Honisch, a paleoceanographer at
> Columbia University's Lamont-Doherty Earth Observatory.
>
> "But if industrial carbon emissions continue at the current
> pace, we may lose organisms we care about -- coral reefs,
> oysters, salmon."
>
> Honish and colleagues said the current rate of ocean
> acidification is at least 10 times faster than it was 56 million
> years ago.
>
> "The geological record suggests that the current acidification
> is potentially unparalleled in at least the last 300 million
> years of Earth history, and raises the possibility that we are
> entering an unknown territory of marine ecosystem change," said
> co-author Andy Ridgwell of Bristol University.
>
> The UN Environment Program released a report in 2010 that warned
> carbon emissions from fossil fuels may bear a greater risk for
> the marine environment than previously thought.
>
> Rising acidity levels have an impact on calcium-based lifeforms,
> ranging from tiny organisms called ptetropods that are the
> primary food source, to crabs, fish, lobsters and coral, it said.
>
> The UN report called for cuts in human-made CO2 emissions to
> reduce acidification and support for further work to quantify
> the risk and identify species that could be most in peril.

Supposedly 20% of protein (for humans) comes from the oceans.


Bret Cahill
Re: Ocean acidification may be worst in 300 million years. Global-warming blamed.
#170
Author: Shall not be infringed
Date: Sat, 03 Mar 2012 15:49
19 lines
2481 bytes
On Mar 1, 7:39 pm, "James Fox" <j...@about.com> wrote:
> http://www.google.com/hostednews/afp/article/ALeqM5i_Z1zrB_r470q
> EJTpTvNGCLIZOew?docId=CNG.972672bf2c229393667b758b16f9bd6a.491
>
> WASHINGTON — High levels of pollution may be turning the
> planet's oceans acidic at a faster rate than at any time in the
> past 300 million years, with unknown consequences for future sea
> life, researchers said Thursday.
>
> The acidification may be worse than during four major mass
> extinctions in history when natural pulses of carbon from
> asteroid impacts and volcanic eruptions caused global
> temperatures to soar, said the study in the journal Science.

Except that the ejecta from the impact and other eruptions, and the
smoke particulates from the resultant mass fires is supposed to cause
a "nuclear winter" scenario.

That is all.  Dismissed.
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