Success Indicators of the Philippine National Aquasilviculture Program (PNAP) - Mangrove Rehabilitation Project in Davao del Sur, Southern Philippines

John Paul Relacion Pacyao, Marlyn Bersabe Llameg


The study was conducted to evaluate success indicators of the Philippine National Aquasilviculture Program (PNAP) – Mangrove Rehabilitation Project in Davao del Sur. The growth increment of mangroves(cm/day) and survival and the physico-chemical parameters of the different project sites were recorded. A questionnaire was employed to gather in socio-demographic profile, best practices employed, benefits and institutional factors. The study employed one shot sampling. The growth increments of mangroves in Punta Biao (0.0032 cm/day) was comparable with Bucana (0.0031 cm/day) but were significantly higher than the rest of the project sites.Sto. Rosario exhibited the lowest growth increment of 0.0007 cm/day. In terms of survival, Bucana and Punta Biao showed the highest survival rate of 96.87% and 99.62%respectively, while San Isidro obtained the lowest mean value of 13.71%. Two (2) types of area orientation found in the different project sites, midland and tidal/mud flats. Soil types were clay loam and sandy clay. High survival and high growth increment were observed in midland area with clay loam substrate while low survival observed in seaward areas with sandy clay substrate. The pH ranged from 6.46-7.23 while salinity ranged from 23ppt-35ppt.  Some of the contributing factors that influenced higher survival rate of PNAP Mangrove Rehabilitation Project in Davao del Sur include the used of matured mangrove propagates, staking prior to mangrove planting, regular monitoring at least every other day and carefully scraping epiphytes (e.g. barnacles and oysters) during mangrove’s early stage. This practices observed in all project sites regardless of percentage rate recorded. 


Aquasilviculture, Mangroves

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