In Bunaken National Park in Indonesia, blast fishing has been
largely brought under control, but large areas of rubble remain
(many blasted nearly 20 years ago). Two groups have a strong interest
in rehabilitating these rubble fields: village fishermen eager for
enhanced yields and dive operators hoping to spread effort among
more dive sites and thus raise the diver-carrying capacity of the park.
The Seacology Foundation (Berkeley, CA) provided a grant to
the park village of Manado Tua to purchase 600 ceramic “EcoReef”
modules to rehabilitate a nearly 1-hectare rubble field in return for
the villagers’ commitment to set aside this area as a no-take zone.
Local dive operators donated nearly 300 hours of dive time to install
the EcoReef modules to help determine if this technique is one in
which they might invest to restore other degraded sites.
Completed in January 2004, the results are impressive, reports
Mark Erdmann, an American advisor to the National Park. The
ceramic “snowflakes,” designed to mimic branching coral, immediately
attracted both schooling and sedentary fishes to the previously lifeless
rubble field. Bryozoans, vermetid worms, tunicates, and hard
coral recruits now cover the modules. More than one hundred coral
fragments transplanted to the EcoReef modules (by wedging between
the ceramic spines) have all survived. The project worked so well that
Seacology provided a second grant for the nearby village of Alung
Benoa to install its own ceramic EcoReef modules this past August.
You can see photos and video of the Manado Tua installation:
www.ecoreefs.com.
PS: You can do something to save our reefs by supporting
Seacology, a great diver-based organization. Visit their website at
www.seacology.org.