Papers by Pastor Malabrigo
AIMS Environmental Science, 2020
Tree species play a very important role in storing and sequestration of carbon by preventing the ... more Tree species play a very important role in storing and sequestration of carbon by preventing the accumulation of carbon dioxide in the atmosphere as greenhouse gases. Carbon stock assessment is a useful tool in estimation of the importance of an area in terms of its carbon storage capacity. Trees with at least 5cm-diameter at breast height were recorded from 27 plots with a total area of 10800 square meter. A total of 139 species with 2239 individuals were identified with a total of 306.48 t ha −1 carbon content based on the live trees' aboveground and belowground biomass. Regression analysis showed that there was no significant relationship between tree carbon stock and basic parameters namely, species richness, species abundance, and elevation. Ecologically important species, particularly the Philippine endemics and threatened, yielded a total of 172.65 t ha −1. Among the species found within the area, Xanthostemon philippinensis Merr. (Myrtaceae) had the highest carbon stored...
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Mangrove Ecosystems of Asia, 2013
ABSTRACT The Philippines has very rich biodiversity in terms of number and percentage. It is rega... more ABSTRACT The Philippines has very rich biodiversity in terms of number and percentage. It is regarded as one of 17 mega biodiversity countries due to its geographical isolation, diverse habitats and high rates of endemism. It ranks fifth globally in terms of the number of plant species and maintains 5 % of the world’s flora. In mangroves alone, the country holds at least 50 % mangrove species of the world’s approximately 65 species. However, due to anthropogenic activities as well as natural disturbances, the country continues to lose its rich biodiversity resources including mangroves. This chapter revisits the status of Philippines’ mangroves, its current and future threats and analyzes the mechanisms on how various stakeholders put efforts to address those threats. We found out that while a number of successful conservation and restoration efforts have been made, there are still clear gaps on how different stakeholders can turn their commitments and initiatives into actions to conserve and rehabilitate Philippines’ mangrove for human well-being and sustainable development.
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Asian Journal of Biodiversity, 2013
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Calauit island is one of the islands in the Calamian Group of Islands in northern Palawan. The is... more Calauit island is one of the islands in the Calamian Group of Islands in northern Palawan. The island is truly blessed with bountiful mangrove resources which provide the Tagbanuas enormous economic and ecological importance. Not known to many, Calauit island became the exit point of typhoon Yolanda causing tremendous damage to mangrove area. The study assessed the extent of damage and the recovery potential of Calauit mangrove forests from the devastation of Typhoon Yolanda. Ten sampling quadrats were established in areas where trees were observed to be 100% defoliated. Individual trees (≥ 1cm diameter) inside each quadrat were measured and evaluated based on the assessment matrix developed in this study. Results of our assessment revealed serious damage of mangroves in Calauit island. About 60% of the mangrove forests was severely affected by Typhoon Yolanda. Eight months after the typhoon, 21% of the trees have fully-recovered crown (all branches were able to develop leaves), 70% are still defoliated and 22% were already dead. Four of the 10 quadrats showed high potential for recovery as evidenced by a lot of seedlings (≥ 25 seedlings) to serve as new regenerations. Conversely, there are four quadrats without any seedling recorded. Three monitoring plots were established for continuous monitoring of the recovery of the mangrove ecosystems. A course of actions was recommended to facilitate the recovery of mangroves in Caluit island, and to bring back the economic benefits from the forest.
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Papers by Pastor Malabrigo