Molluscan (Gastropoda and Bivalvia) diversity and abundance in rocky intertidal areas of Lugait, Misamis Oriental, Northern Mindanao, Philippines

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Research Paper 01/09/2017
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Molluscan (Gastropoda and Bivalvia) diversity and abundance in rocky intertidal areas of Lugait, Misamis Oriental, Northern Mindanao, Philippines

Shirlamaine Irina G. Masangcay, Maria Lourdes Dorothy G. Lacuna
J. Bio. Env. Sci.11( 3), 169-179, September 2017.
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Composition, diversity and abundance of rocky intertidal mollusks and their relationship with the environmental parameters, viz. water quality, total organic matter and calcium carbonate were determined. A total of 43 species were identified, of which 41 species belong to Class Gastropoda under 18 families and 2 species were categorized under Class Bivalvia from 2 families. Using several diversity indices, results revealed high diversity and equitability values in the 2 sampling sites. Moreover, comparison of the mollusks abundance between the 2 sampling stations showed station 2 to be dominantly abundant with Cerithium stercusmuscarum comprising almost one-third of the total population. Canonical Correspondence Analysis showed that total organic matter and calcium carbonate in the sediment may have influenced the abundance of mollusk assemblage in station 2. The results obtained from the study are vital in order to strongly support the need to continue monitoring the Lugait marine sanctuary and its nearby surroundings.


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