Reef Ranching ppt EUAC .pdf

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Genoa November 2014

Cédric Guignard

History of the Project
Seamarc : System Engineering and Marine
Consulting (Thomas Leberre, 2001)
 Environmental impact assessment
 Socio-economic survey
 Coastal protection

In 2005, Seamarc was commissioned by Four
Seasons Resorts Maldives for 2 projects:
 Conception, construction and management of a
marine discovery centre
 Salvage of the corals threatened by the
construction of the resort

The Marine discovery centre
Conceived for 2 main objectives:
 Marine biological research (Manta ray, lemon shark, turtle…)
 Research and development of local programmes (captive
breeding of ornamental fish).
 Guest experience - Education
 Touch tank

Equipped with
 40 Breeding/Rearing/ presentation tanks of 150l
 Larval rearing and live food culture room
 captive breeding, 3 Turtle rehabilitation ponds
 A 4000l reef display tank
 Presentation room
 Touch tank

The Hatchery Results
Steady production of:
 Maldivian Clownfish- Amphiprion nigripes
 Clark’s clownfish – Amphiprion clarkii
 Reunion Seahorse - Hippocampus borboniensis

Breeding Trials
 Shrimps, Gobies, platax…
 Rotifers & Copepods cultures
Post-Larval Capture (PLC)
 Light Traps

Hatchery Discussion
Good points +

Bad points +++

 Very efficient educational tool when associated with
snorkle / dive trips
 Steady production

 Not enough species of interest to be really attractive for
 PLC showing high mortality rates and low amount of species
of interest
 The demanding techniques required for captive breeding
and PLC are difficult to sustain in such a remote location
 Difficult to reproduce in local island context

Coral Translocation (2005)
Salvage of threatened coral colonies
 Every jetty required underwater landscaping and
 No mitigation enforcement
 Numerous coral colonies had to be moved
Different techniques were tested :
 Using locally available materials only
 Welded iron rebar flat structures = Coral Frame
 Different coatings were tested
 Different attachment methods
 Different locations on the reef
 Numerous broken fragments were attached

Coral Translocation results

Results and lessons learned
 Limited mortality, most of the time due to bad
attachment techniques
 Very high growth rate noticed, especially from the
smaller fragments
 Rich in information to improve survival and growth
 Lots of fish and invertebrates recruitment, even in
coral frames located in bare sandy areas
 Well done, fragmentation increase colonies

Reefscapers programme
Development of the coral frame production
unit in Fulhadhoo

1 House and garden converted to
production site

4 full time jobs created

3 grouper fishermen converted

Conception of the 2007 and current design

Better stability and strength

Lighter and more economical

Adapted to production in series

Better coating

Reefscapers programme
Reefscaping programme launched in several resorts
 Financed by the guest sponsoring program and resorts
 Training and management of a dedicated marine biologist in each
 10 resorts in the Maldives

Set up of a monitoring protocol
 Pictures
 Fish/inverts life
 Health and growth

Reefscapers Discussion
Guest Sponsoring :
 Lots of interest from the guests
 Establishment of a successful sponsoring programme
 Visible and quick results were surely the main reason of
this success (web galleries)
 The programme is still growing exponentially
Technical Information :
 An exponential stock was generated for retransplantation
 Almost the complete trophic chain was represented in
mature coal frames parks
 60 coral species were successfully transplanted
 Lots of invertebrates were found during fragmentation of
the colonies
 There were also lots of postlarvae and juveniles in the coral
frames  act as nurseries

Am I exaggerating?

Reef Ranching idea is born
The concept
 Extensive culture of coral to create fish nurseries
 Transform low productivity areas (sand and rubble areas)
and/or highly degraded part of the reef in thriving coral
 Only low tech/low cost technics and equipements
 Managable by locals without strong knowledge of biology
or husbandry
 Net free collection technique
 Export of juveniles
 Adapted to remote locations without needing much
knowledge from locals

No site available in
2009, but…

The site: Innafushi Island

20 years lease of Innafushi and 100 ha of the
surrounding reef (2013)
 Unhinabited island next to Fulhadhoo (coral frame
 About 500m long and 60m large
 Reef heavily impacted by bleaching in 1998
 Strong erosion problems
 No tourism on the site

What has been done yet

February 2013

First transplantation at Innafushi
 40 coral frame deployed
 Transplanted using broken frags found on the reef
 1 location in inner laggo (3 to 4 m deep)
 Start of the monitoring program
 1 more local staff dedicated to the site

2 objectives
 Grow coral stock for further transplantation
 Get coral frames for animal collection trials

What has been done yet

December 2013

Second transplantation batch
 90 coral frame deployed


 Transplanted using broken frags found on the reef and coral
grown on the first coral frame


 5 locations from the drop off to the inner laggo (1.2 to 4 m
 7 coral species (Acroporidae and Pocilloporidae)


 Mono specific and mixed coral frames


 2 replicates at each site (2 x 9)

What has been done yet

December 2013

Collection concept
 Move the coral frame with the fishs in the pool
 Inflation and surfacing
 Fragment the coral if needed (inverts falling in the pool)
 Gentle shake out of the water to get the fish in the pool
 The coral frame is sent back to the lagoon
 Fishs and inverts are collected from the pool

Animal collection tests
 Low tech system
 25€ swiming pool, nylon, glue and cable ties
 Different methods were tested
 Hardest conditions (4 m deep)
 All data needed collected  new collecting prototype under

What has been done yet

December 2013

Fish and invert sorting/stocking
 Sorted by species and by coral frame
 Ensure the best possible traceability
 Offer usefull data on fish and inverts settlements

What we do with the fish
 Juvenils of ornemental species are kept for export
 Adults and unwanted species are used to restock nearby reef
 The possibillity to grow food fish (groupers, snappers…) will
be studied

What’s next?

Plan For innafushi
 Objectives of 1000 coral frames within 5 years
 Install the coral frames in specific locations to limit island
 Production of artificial live rocks, also used for erosion control

Plan for fulhadhoo
 Construction of fish stocking and packing facility
 Employment of 2 additionnal local staff

Next trip in July 2015
 More transplantation!
 Trials of the new collection device prototype
 Construction of a pilot stocking/packing facility
 First export toward Europe (Sealife sponsorship)
 Trials with artificial live rocks
 Socio-economic survey with 10 student from ISTOM
(International agro-development)

Private Sponsors

Financing ?

 Any company can sponsor as much coral frame as they want
 Dedicated web gallery updated every 3 to 6 months
 Coral frame named after the company (traceability)
 Yearly agreement including maintenance/monitoring fees

Public Aquariums
 Same as private sponsors
 But get priority on the fish collected
 Possibility to send staff to participate
 Possibillity to come over for other research on site
 Visitor sponsoring program

Crowdfunding campaign
 Focused on aquarium hobbist and divers
 Will be launched before christmass hopefully
 Lots of communsication necessary (forums, facebook….)
 Rewards includes trips to innafushi

Special thanks

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