[Coral-List] corals survive in turbid water (Eugene Shinn) Re: Coral-List Digest, Vol 89, Issue 11

Damien Beri beridl at g.cofc.edu
Wed Jan 13 12:43:34 EST 2016


Thats incredible that the dams actually help reduce turbidity.  How often
does the sediment need to be cleared from the specific dam, and whats the
cost of removal?  Does the production of coral in non-turbid environments
which once were turbid offset the process of removing the sediment from the
dam once it builds up behind the dam wall in the same time span?

On Tue, Jan 12, 2016 at 2:33 PM, Chowdula Satya narayana <
chowdula_narayana at rediffmail.com> wrote:

> Dear Professor,
>
> I agree to the fact that impact of light on corals will reduce in turbid
> waters. But, the survival of
> Siderastrea and Acropora in shaded waters may be a totally a different
> concept.  I am working with my
> team in a turbid coral reef area in India located in a state called
> Gujarat.  It is Gulf of Kachchh and
> the first Marine National Park in India.  Siderastrea savignayana in this
> region is surviving even in
> highly muddy and murky environment and all the Acropora species surviving
> about 10 thousand years back
> are totally extirpated primarily due to loads of sediment brought into the
> Gulf by adjacent rivers.
> Gulf of Kachchh MNP is the less diverse coral reef environment in India
> with hardly about 50 hardy
> species of scleractinians reported so far.  The corals are surviving
> primarily because of high tidal
> amplitude, which keeps the waters always on the move without allowing the
> sediment/silt to settle on
> corals.  Due to damming the rivers, now the sediment load has reduced to
> about one tenth and now we are
> successfully transplanting acropora species from other reef regions with
> almost similar conditions to
> Kachchh.  Probably this is the first of its kind effort in the world.  We
> have observed temporary
> bleaching due to seasonal changes.  The corals got their colour back once
> the cold or hot spell is
> over.  If you are interested, you are welcome to visit this unique
> environment.  Now we are
> concentrating on reducing the sediment load further along with algal
> control using some ocean
> engineering interventions.
>
>
>
> On Tue, 12 Jan 2016 22:32:06 +0530 coral-list-request at coral.aoml.noaa.gov
> wrote
> >Send Coral-List mailing list submissions to
>
> coral-list at coral.aoml.noaa.gov
>
>
>
> Message: 1
>
> Date: Mon, 11 Jan 2016 13:07:31 -0500
>
> From: Eugene Shinn
>
> Subject: [Coral-List] corals survive in turbid water
>
> To: coral-list at coral.aoml.noaa.gov
>
> Message-ID:
>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
>
>
> Attached is a paper with an unusual conclusion. It suggests
>
> transplanting threatened corals to areas of turbidity to protect them
>
> from sun light. The paper presents good evidence for the proposal. In
>
> the Keys however, nearshore areas of high turbidity are also prone to
>
> periodic chilling during sporadic cold fronts. I might add that while
>
> most of the head corals and all of the Acroporids at Carysfort reef
>
> located in clear water off the Florida Keys are suffering there is a
>
> cluster of /Siderasterea siderea/ heads in the shade beneath the
>
> lighthouse that are growing just fine. I have been photographing them
>
> once a year for many years. Does this not suggest a place to perform a
>
> simple experiment? Gene
>
>
> http://onlinelibrary.wiley.com/resolve/doi?DOI=10.1111%2Fgcb.13166#.VpPXbbgXj08.email
>
>
>
>
>
> --
>
>
>
>
>
> No Rocks, No Water, No Ecosystem (EAS)
>
> ------------------------------------ -----------------------------------
>
> E. A. Shinn, Courtesy Professor
>
> University of South Florida
>
> College of Marine Science Room 221A
>
> 140 Seventh Avenue South
>
> St. Petersburg, FL 33701
>
>
>
> Tel 727 553-1158
>
> ---------------------------------- -----------------------------------
> End of Coral-List Digest, Vol 89, Issue 11
>
> ******************************************
>
>
> Dr. Ch. Satyanarayana,
> Scientist
> (Coral Taxonomist),
> Zoological Survey of India,
> (II Floor) Fire Proof Spirit Building,
> Indian Museum Complex,
> 27 Jawaharlal Nehru Road,
> Kolkata - 700 016.
> Cell:9433325559
> Phone: 091-033-22861608
>        091-033-22521212
> _______________________________________________
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>


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