[Coral-List] Ocean acidification beneficial in short term to Corals?

[Delbeek, Charles]

Not surprising ... you can see similar effects with increases in nitrogen and phosphorus but as Daphne points out the effects are variable, with some coral species showing opposite effects from others.

At Waikiki Aquarium we used water from a saltwater well and it entered the tanks at a pH of 7.6-7.8 and the tanks were outside in full sunlight. The corals grew very quickly, but the skeletons were less dense that wild counterparts and they tended to more pigmented as well.

J. Charles Delbeek, M.Sc.
Assistant Curator, Steinhart Aquarium
California Academy of Sciences

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Cell: 415.859.0420
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cdelbeek at calacademy.org
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-----Original Message-----
From: coral-list-bounces at coral.aoml.noaa.gov [mailto:coral-list-bounces at coral.aoml.noaa.gov] On Behalf Of Fautin, Daphne G.
Sent: Thursday, February 05, 2015 9:08 AM
To: Lane W; coral-list at coral.aoml.noaa.gov
Subject: Re: [Coral-List] Ocean acidification beneficial in short term to Corals ?

As organisms, corals vary, at every level -- individuals, species, etc.  Such variability is the engine of evolution.

So this is not surprising.  The question is how widespread these features are.  And how persistent they are; this study seems to show that the effects disappear as conditions grow more atypical of contemporary seas.  The prospect for the future would be of less diversity, with only those taxa doing well in a much-modified ocean.

Daphne G. Fautin
Professor, Ecology and Evolutionary Biology
University of Kansas
1200 Sunnyside Avenue
Lawrence, Kansas 66045 USA

telephone 1-785-864-3062
fax 1-785-864-5321
skype user name daphne.fautin
cv: www.nhm.ku.edu/inverts/daphne.html

    database of hexacorals, including sea anemones
       most recent version released 2 January 2013
hercules.kgs.ku.edu/Hexacoral/Anemone2/index.cfm

________________________________________
From: coral-list-bounces at coral.aoml.noaa.gov [coral-list-bounces at coral.aoml...noaa.gov] on behalf of Lane W [dryland404 at gmail.com]
Sent: Wednesday, February 04, 2015 1:13 PM
To: coral-list at coral.aoml.noaa.gov
Subject: [Coral-List] Ocean acidification beneficial in short term to Corals    ?

Hello Coral listers,

Does anyone have additional information in regards the the recently
released reports showing some corals experiencing a benefit to increased
ocean acidification and temperature? This seems contrary to has been taught...


http://www.flmrg.org/viewtopic.php?f=7&t=63

"The study showed that this species of coral (Siderastrea siderea)
exhibited a peaked or parabolic response to both warming and acidification,
that is, moderate acidification and warming actually enhanced coral
calcification, with only extreme warming and acidification negatively
impacting the corals," Ries said. "This was surprising given that most
studies have shown that corals exhibit a more negative response to even
moderate acidification."
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