Rehabilitation, Management and Protection of Mangrove Areas CY 2011

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As a response to mangrove resource degradation and climate change adaptation strategies, the region conducted validation and mangrove areas and provision of technical assistance in mangrove rehabilitation.

→ Validation of Mangrove Areas

Several statistics have been published with regards to the estimated mangrove cover of the CALABARZON Region. However, for the past several years no ground validation has been conducted to support NAMRIA’S satellite generated data, hence, ground validation of the remaining mangroves in Lucena City of Quezon, and Rosario and Tanza of Cavite were planned and undertaken this CY 2011. But due to the request from the province of Batangas same was also conducted thereat.

Lucena City, Quezon. An aggregated area of approximately 70-hectare mangrove areas covering the Brgys of Ibabang Iyam, Barra, Castiloo, Mayao Parada and Talaotalao were validated. The most common and dominant mangrove species observed include Rhizophora stylosa, Rhizophora apiculata, Rhizophora mucronata, Avicennia marina, Avicennia alba, Sonneratia alba.

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Cavite. The riverine and fringing mangroves were also validated in the municipalities of Rosario and Tanza, Cavite with an approximate area of 30 hectares. Most dominant species observed include Sonneratia caseolaris, Sonneratia alba, Avicennia marina, Avicennia officinalis and Nypa fruticans. Starting from the seaward zone dominant species are Avicennia marina, Soneratia alba and Soneratia caseolaris. From the middle zone extending to the landward zone are species of Rhizophora apiculata, Rhizophora mucronata and Rhizophora stylosa and Aroma farnesiana. Along the sheltered coves and riverine zone species are represented by the mixture of species observed in the seaward, middle and landward zones. 112912 27

Batangas. Assessment of mangrove areas was conducted per request of its Provincial Government Environment and Natural Resources Office (PGENRO). Stand structure assessment of mangrove communities were conducted at the three (3) coastal barangays of Lemery and San Luis, Batangas.

 

The riverine and fringing mangroves assessed were located in the delta of Barangay Palanas, Lemery Batangas covers approximately five (5) hectares lying within coordinates 120°54'01.9" longitude and 13°53'38.7" latitude. The mangrove areas are associated by Aegiceras corniculatum (Saging-saging), Sonneratia alba (Pagatpat), Avicennia alba (Bungalon), Avicennia marina (Api-api), Bruguierra gymnorhizza (Busain), Nypa fruticans (Nipa), Rhizophora apiculata (Bakauan lalaki), Rhizophora mucronata (Bakauan babae), Rhizophora stylosa (Bakauan Bato). A total of two (2) hectares mangrove plantations were found in the area planted with Rhizophora sp., Avicennia Sp. and Briguierra Sp. An approximate area of 0.40 hectare Acacia farnesiana (Aroma) were also noticed striving in the seaward zone of Palanas. 112912 28

In Brgy. Mataas na Bayan, Lemery, Batangas, regenerations of mangrove communities were surveyed and assessed. Avicennia alba (Bungalon) were vigorously found and dominated the eight and half (8.5) hectares abandoned fishpond, associated with Excoecaria agallocha (Butabuta), Hibiscus tiliaceus (Malubago), Sonneratia alba (Pagatpat), and Ipomea pescaprae (Lambayong) are grow ing on a sandy muddy substratum. Approximately eleven (11) hectares of Acacia farnesiana (Aroma) were also observed along the seaward zone of Mataas na Bayan serving as buffer zone from storm surges, waves and sand erosion.

The remaining one (1) hectare of mangroves in Brgy. Banoyo, San Luis, Batangas are classified into fringing and over washed type of mangrove forest, situated between 120° 54'52.7" longitude and 13° 49'51.2" latitude. There are only four (4) species of mangroves identified and recorded in the area, these are the Avicennia alba, Avicennia marina, Rhizophora stylosa and Sonneratia alba. The fringing mangroves at shore are characterized with sandy muddy substrate while the overwashed mangroves in Banoyo Island are growing on sandy/coralline substrate.

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 Provision of Technical Assistance in the Management and Protection of Mangrove Areas

Development, rehabilitation and protection of mangrove areas have constantly been the priority activity of the coastal and marine management. This is in response to the continuous mangrove resource degradation, climate change adaptation strategies and Executive Order No. 26, known as National Greening Program. Increasing mangrove cover areas in CALABARZON Region was attributed to the full commitment of our partners, Peoples Organizations (PO’s), Non-Government Organizations, Private sectors, Local Government Units (LGU’s) and its constituents. With their assistance and cooperation supporting this program, total of 39-hectares mangrove plantation areas was established within 8 coastal municipalities of Quezon.

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Summary location of the 39-hectares established mangrove plantations is shown in Table III-28 below:

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