| Coral
reefs are among the most biologically diverse ecosystems on the
planet. What you see (picture) left is the profusion of coral
growing off our submerged coral protect structure after just one
year (we have also seen a 2 fold increase in fish)! And this despite
the fact sea temperatures have risen, which means that coral in
other areas have suffered enormously.
Outstanding examples of our biological and natural heritage, coral
reefs are an important asset to local communities serving as a source of seafood,
providing materials for new medicines, generating income from tourism, and buffering
coastal cities and settlements from storm damage.
Yet,
in just a few decades, human activities have devastated many of
these biologically rich, ancient ecosystems. Many people joke
about the people of Nusa Dua, Sanur and Tanjung Benoa in Bali
saying "Has anyone seen our beach?!". Where vast swathes
of beach have washed away due to the destruction of the coral
reef system in those areas. In the next few decades, more are
destined for destruction around the world. However, some people
today are beginning to realize that the self-healing powers of
reef ecosystems are beginning to wear out and it's high time for
active support.
The, Biorock method gives rise to great hopes it's not
yet too late for that. And on the 21st December 2002, a team from
the Indonesian Ministry of Fisheries sponsored coral and fisheries
project started work in conjunction with Villas Agung Bali Nirwana
in the waters directly offshore of the resort.
The
project involved the building and submerging of a large (around 15 foot in diameter)
steel, cage-like structure which resembles a pizza oven! Through this structure,
a low (6 amp) electric current is passed, which causes a fast calcium build
up on the metal surfaces and creates the ideal pH for coral growth. These conditions
also help compensate for sometimes fatal changes in sea temperature. Also, the
electric current / calcium build up prevents the structure from rusting. Although
Agung Bali Nirwana is blessed with a superb, living coral reef anyway. Corals
are still under threat from rising sea temperatures, storm damage and bad fishing
practices.
Corals
transplanted onto the structures attract high densities of all type of fish.
All corals used in the project are broken pieces found nearby where they would
be damaged by rolling or sedimentation. They would sooner or later die if not
rescued and attached to the nursery structures. Broken corals are collected
from the sea floor and attached with wires to the structure. Very quickly, calcium
carbonate naturally reinforces the corals attachment to these structures.
Without
needing so much of their own energy to create a calcareous skeleton, each coral
polyp can put more energy into growth and reproduction. These corals show exceptionally
high growth rates and also thrive even when water quality conditions have deteriorated
to the point of killing surrounding corals.
Not only corals profit from the BioRock technology. Great
varieties of fishes, also commercially relevant species like snappers, are attracted
to these sheltered habitats. The increased fish population can restock the surrounding
waters and help to improve the conditions for the local fishermen.
The BioRock structure you see above is what it looked like
after the team had just finished the initial installation stage. Based on experience
with other BioRock structures elsewhere in the world, very soon the structure
and the area surrounding it will be teaming with coral growth and fish. Further
enhancing the already superb reef / fish life in front of our villas.
We are doing to this as our responsibility to future generations,
and because it makes us feel good. But of course, our guests have the added
benefit of being able to look forward to some of the very best offshore snorkeling
and diving in Bali.
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