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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology
MASAGCA, JIMMY TEVAR
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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OCCURRENCE AND DISTRIBUTIONAL RANGE OF MANGROVE VASCULAR FLORA OF CATANDUANES ISLAND, LUZON, PHILIPPINES MASAGCA, JIMMY TEVAR
BIOTROPIA Vol. 15 No. 2 (2008): BIOTROPIA Vol. 15 No. 2 December 2008
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (92.513 KB) | DOI: 10.11598/btb.2008.15.2.68

Abstract

Mangroves play very significant roles not only on the economic aspects but also on the ecological aspects as biobelting for tidal surges and tsunamis. The loss of human lives due to the deadly tsunamis in East Asia and the unabated destruction of coastal vegetation have resulted in a renewed focus on the mangrove resources. The purpose of this paper is to report the existing mangrove database of the typhoon-prone island province of Catanduanes in Luzon, Philippines which will be used as bases in determining the appropriate educational management initiatives of various sectors for mangrove rehabilitation and regeneration.   A total of 37 species of mangrove vascular flora (13 species of major mangrove elements, 10 species of minor mangrove elements and 14 associated mangrove species) were identified in the island under study. Two species of the genus Avicennia (A. marina and A. officinalis) were noted in the island. The other genera (Bruguiera, Ceriops, Sonneratia and Rhizophora) are well distributed in the designated eco-zones. Nypa fruticans is the most important mangrove plant species and a member of the screwpine family (Pandanaceae), Pandanus tectorius which is an associated mangrove species is well-distributed all throughout the island.Key words:  Mangroves, vascular flora, Catanduanes, Philippines, occurrence and distribution.
THE STATUS OF MOLLUSK DIVERSITY AND PHYSICAL SETTING OF THE MANGROVE ZONES IN CATANDUANES ISLAND, LUZON, PHILIPPINES MASAGCA, JIMMY TEVAR; MENDOZA, ANGELICA V.; TRIBIANA, ESTERELLA T.
BIOTROPIA Vol. 17 No. 2 (2010): BIOTROPIA Vol. 17 No. 2 December 2010
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2010.17.2.77

Abstract

The status of mollusk diversity and physical setting of mangrove areas in Catanduanes island, Luzon (Philippines) are described. A total of 57 species of molluscs, consisting of 27 gastropods and 30 bivalves were recorded in the island. The most abundant of these molluscs are the prosobranch, Terebralia sulcata; corbiculid bivalve, Geloina coaxans; potamidiids, Cerithidea cingulata and Cerithidea rhizophorarum; and two other species of the genus Littorina (Littorinopsis). Using the physiographic model, majority of the mangrove areas under study follow the composite river and wave-dominated setting with some few areas having the wave-dominated, tide-dominated allochthonous setting following the physiognomic model. Keywords: Mollusk diversity, mangrove areas, Philippines
OCCURRENCE OF ARBOREAL-CLIMBING GRAPSIDS AND OTHER BRACHYURANS IN TWO MANGROVE AREAS OF SOUTHERN LUZON, PHILIPPINES MASAGCA, JIMMY Tevar
BIOTROPIA Vol. 18 No. 2 (2011): BIOTROPIA Vol. 18 No. 2 December 2011
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (186.713 KB) | DOI: 10.11598/btb.2011.18.2.242

Abstract

     Despite the obvious importance to ecosystem functioning, the most prominent groups belonging to the Grapsidae are generally regarded as less studied in the Philippines. In this study, the occurrence of arboreal-climbing grapsids and other brachyurans associated with the mangals of Quezon and Catanduanes was considered including some aspects on climbing, burrowing and feeding behaviour of selected grapsids represented by Hemigrapsus, Pseudograpsus and Metopograpsus.  The non-grapsoid taxa are represented by Varunidae (Ptychognathus),   Portunidae (Charybdis, Portunus, Scylla, Thalamita); and Eriphiidae (Epixanthus). Metopograpsus latifrons (White, 1847) [Grapsus] is an exclusive mangrove tree climber (EMTC), while Pseudograpsus elongatus (A. Milne Edwards, 1873) is described here as occasional mangrove tree climber (OMTC). Hemigrapsus (Hemigrapsus) penicillatus (De Haan, 1835) [Grapsus (Eriocheir)] is a non-mangrove arboreal–climbing species (NTC) only seen on crevices of the mangrove areas. P. elongatus creates burrows most often than M.  latifrons. Likewise, the study provides information on the presence of the portunid orange mud crab (Scylla olivacea); the green mud crab (S. paramamosain); the varunid (Ptychognathus altimana); and extremely abundant xanthiid crab, Epixanthus dentatus in the mangroves of Catanduanes but not in Pagbilao, Quezon.  
Co-Authors MENDOZA, ANGELICA V. TRIBIANA, ESTERELLA T.