[Coral-List] Electric Reefs
James M Cervino
cnidaria at earthlink.net
Thu Mar 24 08:39:31 EST 2005
Dear people interested in the electric reef research projects,
Below is a link that provides a PDF of a paper published in the
Journal Symbiosis. the title is: Increased Zooxanthellae Numbers and
Mitotic Index in Electrically Stimulated Corals Symbiosis (2004)
37:107-120.
Tom Goreau is in a village in Panama carrying out regular maintenance
on a few structures with no e-mail access. He will be back late next
week for the Global Warming Conference here in NY.
I have worked with him on the Indo Pacific projects. All corals were
collected from: broken fragments damaged by storms, irresponsible
development projects, and illegal BLAST fisherman's remnants of
broken colonies. If properly maintained, these structures work fine
with positive results. The key here is monitoring of the structure
once it is started. Oceanic conditions are erratic and can cause
electrodes to brake off due to storm damage. This is why a normal
monthly monitoring survey is needed to measure growth rates and to
make sure the anode and cathode to the structure is properly fixed
into proper position. The Maldive structures are up and running,
however, we are not sure that the anodes and cathods are still
attached since the Tsunami occurred. This is in no way like throwing
cement structures in the water along the coast. If this were the
case, they would be scattered throughout and overgrown with algae
turf. These Biorock structures, if properly maintained, continue to
undergo accretion and get heavier as time passes preventing any
movement. They also prevent the over-growth of algae turf from
smothering the corals, as accretion technology and current is
critical.
I am pleased with the progress and we are currently conducting lab
and field experiments that Tom will submit for publication. I know
this is needed, however, due to Toms limited almost non-existent
funding this will take time. The Bali project is amazing, and for
some reason these structures are covered with corals actively growing
compared to the surrounding corals reefs damaged by the BLAST
fisherman and aquarium industry collectors that took place before
they went in.
What I can tell you (from work I did) about this technology is the
that Zooxanthella densities, mitotic indices, and chlorophyll were
measured in six major reef-building coral genera growing on
electrically stimulated electric structures in Indonesia, and
compared with genetically identical corals growing adjacent to them.
Corals on Biorock reefs had generally higher densities of
zooxanthellae and higher rates of symbiotic algal division, but
generally lower chlorophyll per zooxanthella , with the Acroporids
growing the fastest.
WITH REGARDS TO : Ari Spenhoff post:
In 2002 we abandoned these methods in favour of the Mineral Accretion
Technology (or Biorock-Technology) and are hence supporting its wider
application.
James: Was this abandoned due to copyright legalities? Or was it
inability of proper current adjustment to the structure ?
James
http://www.globalcoral.org/Increased%20Zooxanthellae%20Numbers%20and%20Mitotic%20Index%20in%20Electrically%20Stimulated%20Corals.htm
--
*******************************************
James M. Cervino, Ph.D. Candidate
Invertebrate Physiology & Pathology
Marine Sciences Department
University of South Carolina
Mobile: 917.620.5287
cnidaria at earthlink.net
http://www.globalcoral.org
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