Sunday, December 23, 2012

Crown of Thorns Plague


It is easy to criticize Government inaction and there are plenty of these complaints in the press and from people you meet, here in the Philippines. But there is precious little good press when Government does something which is insightful, proactive and effective.

Take for example the Government of Southern Leyte and it's Local Government Units (LGUs) campaign against the Crown of Thorns Starfish infestation around Sogod Bay. You have probably never heard of this, but Government at all levels, from top to bottom, are working hard to save the Coral Reefs from what would be total devastation if immediate and extensive action were not taken.

Crown of Thorns Starfish (COTS) are naturally found in Coral Reefs throughout the Pacific area; normally in numbers between 1-15 COTS per Hectare (10,000 square meters). COTS each consume between 5-13 square meters of Coral Reef per year; preying on all types of coral, hard and soft, with a preference for the fast growing Branch Corals. Their natural common predators are Conch and Anemone.

But for some apparently unknown reason the COTS can reproduce in large numbers, sowing their eggs in one general area, which drift on currents over a larger area and so on. One possible cause of increased reproduction is increased nutrition sources caused by "run-off" of fertilizers and other human activity. Or maybe it is just a cyclic thing. Exact knowledge seems limited.


The Sogod Bay area experienced a serious outbreak of COTS infestation in 2005. The local scuba dive shop operators worked together and did their best to arrest the problem by extracting tens of thousands of COTS, and the outbreak eventually subsided. But the resources of the dive shop operators were limited, and several reefs were devastated. Sogod Bay is experiencing another major outbreak in 2012.

Early in the year, with the COTS populations reaching up to ten-times "normal" levels, the dive shop operators decided to bring the new outbreak to the attention of the Provincial Government in an attempt to save the reefs from destruction. Recognizing the importance of the Coral Reefs to the local fishing community and the recreational scuba dive tourism operations around the bay, the Provincial Government decided to take action.

Using funds from their Provincial Disaster Risk fund, the Government organized a meeting of all government units, Southern Leyte State University and the scuba dive operators. The kick-off meeting was held April 12, 2012 and was well attended by all stakeholders. It resulted in a comprehensive action plan, funded by the government, to aggressively fight the COTS infestation and save as many of the best reefs as possible.

The battle-plan calls for use of the effective methods developed by Australia's Great Barrier Reef Marine Park Authority (GBRMPA) in their ongoing fight against COTS infection in Australia. The only effective methods found so far are to either physically remove the COTS one by one from the water, where they then suffocate on dry-land, or inject each COTS in the water with a deadly solution.

These are both labour and resource intensive procedures. It requires the Local Government Unit and area people to enter the water and physically remove the COTS, while the scuba dive shop operator's staff use their Bancas and scuba dive gear and use "dosing-guns", purchased by the Provincial Government and charged with dry-acid (sodium bisolfinate), to directly kill the COTS in the water.

The local stakeholders contribute their time and receive 1-Peso "bounty" per landed COTS. The dive operators likewise are provided the bounty to off-set their staff, fuel and dive-tank costs. The government appointed Dive Ranger (see separate blog entry) helps to organize intensive extraction events and maintains bounty records; while Southern Leyte University is scientifically studying the efficacy of the effort.

Anecdotal observations show that the effort is working! Literally tens-of thousands of COTS have been removed, and the program is ongoing. While the Coral Reef on the north-side of the Tankaan Peninsula was devastated early in the outbreak, destroying five popular dive-sites and fishing-grounds, the other major reefs and dive sites around the bay have so far been largely protected.

This is a great example of government-private vision, cooperation and commitment of resources; in this case to protect an important natural resource and source of livelihood for local fishermen and for tourism within Southern Leyte. It is a positive example of Government in action and another demonstration of the contribution that scuba dive shop operators make to local communities.

A great win-win government - private enterprise battle for the Coral Reefs of Southern Leyte!

For more information, contact...
southern leyte state university: Homer Yray <homeryray@yahoo.com>

No comments: