Diversity and species composition of mangroves species in Pilar, Siargao Island, Surigao Del Norte

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Research Paper 01/02/2021
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Diversity and species composition of mangroves species in Pilar, Siargao Island, Surigao Del Norte

Krystel Grace V. Padilla, Joey G. Martizano, June Alexis Santos
J. Bio. Env. Sci.18( 2), 14-22, February 2021.
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Mangroves are considered as the most significant components of the coastal ecosystem and among the most productive and biologically complex ecosystems on the planet. Assessment of mangrove species plays a critical role in the preservation and protection of the mangroves forest. The study aimed to assess the mangrove species in Pilar, Siargao Island. The belt transect was employed with a dimension of modified 10 m x 12 m and was installed per quadrat. Eight mangrove species were identified under four families, and these are B. sexanguelaC. decandraR. apiculata, R. mucronata, A. albaA. marina, L. littorea, and X. granatum. One species, C. decandra is categorized by the IUCN as a near-threatened state. Results from the mangroves vegetation structure show that R. apiculata got the highest relative frequency (26.32%), density (35.46%), and dominance (55.08%) therefore; it has the highest importance value (116.85%). This further implies that R. apiculata is the most important and acclimated mangrove species in the study area. The species diversity in Pilar, Siargao Island falls under very low diversity (H’=1.63) which might be attributed to some human-related disturbances. Thus, further consideration in future planning and conservation to increase the resiliency of the mangrove ecosystem is needed.


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