BIOTA Philippines Conference System, 52nd BIOTA Annual National Convention and Scientific Sessions

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Diversity of Butterflies in Angat Watershed Forest Reserve, Norzagaray, Bulacan
Roanne Benesisto Romeroso

Last modified: 2017-03-10






Butterflies play an important role in our ecosystems. Ecologically and socio-economically, they are considered as biological components which affect human life in various ways either directly or indirectly, and in tangible or intangible manner. Butterflies serve as environment indicators are easily affected by environmental stresses and are good model organisms for study because of their sensitivity to changes of weather conditions, ecological and ecological changes. In this study, the diversity of butterflies was assessed in two selected sites at Angat Watershed Forest Reserve in Norzagaray, Bulacan. A 15 m x 15 m quadrat was established in each sampling site with an additional transect made 50m away from the first in Site B employing the Transect Walk and Opportunistic sampling methods. A total of twenty-one (21) individuals of butterflies, 6 from Site 1 and the remaining15 were gathered from Site 2. These individuals belong to thirteen (13) species, and classified into 4 families. Of the collected butterflies, it was revealed that majority (71%) belongs to Family Nymphalidae and Anosia melanippus Cramer, 1777 was found to be the most abundant species with 3 individuals sampled. Furthermore, Site 2 has the higher diversity of collected butterflies with 15 individuals compared to 6 individuals from Site 2 as supported by greater values of alpha diversity indices Species Richness (S), Simpson Index of Diversity (1-D), Simpson Reciprocal Index (1/D), and Shannon Weiner Index (H’) and lower value of Simpson Index (D). However, Site 1, has higher evenness compared to Site 2 evidenced by a greater E value. The baseline information on diversity and status of butterflies in the area is useful as one basis for the protection, conservation and management of the sanctuary of the watershed.


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