Crab biodiversity under different management schemes of mangrove ecosystems

Abstract

© 2016 Iran Solid Waste Association. Reforestation is one of the Philippines' government efforts to restore and rehabilitate degraded mangrove ecosystems. Although there is recovery of the ecosystem in terms of vegetation, the recovery of closely-linked faunal species in terms of community structure is still understudied. This research investigates the community structure of mangrove crabs under two different management schemes: protected mangroves and reforested mangroves. The transectplot method was employed in each management scheme to quantify the vegetation, crab assemblages and environmental variables. Community composition of crabs and mangrove trees were compared between protected and reforested mangroves using non-metric multi-dimensional scaling and analysis of similarity in PRIMER 6. Chi-squared was used to test the variance of sex ration of the crabs. Canonical Correspondence Analysis was used to determine the relationship between crabs and environmental parameters. A total of twelve species of crabs belonging to six families were identified in protected mangroves while only four species were documented in reforested mangroves. Perisesarma indiarum and Baptozius vinosus were the most dominant species in protected and reforested mangrove, respectively. Univariate analysis of variance of crab assemblage data revealed significant differences in crab composition and abundance between protected mangroves and from reforested mangroves (P<0.05). Canonical correspondence analysis showed that soil texture was found to greatly affect the distribution of crab assemblages and mangroves (P<0.05). Environmental factors and human intervention had contributed to the difference in crab assemblages in mangrove ecosystems.

Source or Periodical Title

Global Journal of Environmental Science and Management

ISSN

23833572

Page

19-30

Document Type

Article

Subject

Analysis of similarity (ANOSIM), Analysis of variance (ANOVA), Non-metric multi-dimensional scaling (NMDS), Perisesarma, Plymouth routines in multivariate ecological research (PRIMER), Protected mangroves (PM), Reforested mangrove (RM)

This document is currently not available here.

Share

COinS