Analysis of Biodiversity Levels in the Mangrove Ecosystem of Liya Togo Village, South Wangi-Wangi District, Wakatobi Regency:

La Ode Jaenal Ariwin -; La Ode Siwi; La Ode Siwi; Abdul Manan; La Gandri; Ema Hermawati  Garusu; Muhammad Saleh Qadri

doi:10.63922/ijeter.v4i03.6051

La Ode Jaenal Ariwin - Halu Ole University
La Ode Siwi Halu Oleo University
Agusrinal Halu Oleo University
Abdul Manan Halu Oleo University
La Gandri Halu Oleo University
Ema Hermawati Garusu Halu Oleo University
Muhammad Saleh Qadri Halu Oleo University

DOI: https://doi.org/10.63922/ijeter.v4i03.6051

Keywords: Biodiversity, Mangrove Ecosystem, Importance Value Index, Shannon-Wiener Index, Community Structure

Abstract

Mangrove ecosystems are vital components of coastal areas, serving as barriers against abrasion, sediment traps, and habitats for diverse marine biota. Land-use conversion, resource exploitation, and illegal logging have reduced the extent and quality of mangroves in various parts of Indonesia including Liya Togo Village, Wakatobi Regency thereby threatening biodiversity levels. This study aimed to assess the biodiversity of the mangrove ecosystem in Liya Togo Village, South Wangi-Wangi District, Wakatobi Regency. Conducted in January 2026 using purposive sampling with a 4% sampling intensity, the study utilized six observation plots of varying sizes: 20×20 m for trees, 10×10 m for poles, 5×5 m for saplings, and 2×2 m for seedlings. Vegetation community structure was analyzed based on density, frequency, dominance, and the Importance Value Index (INP), while biodiversity levels were assessed using the Shannon-Wiener Index (H'). The results revealed that the mangrove ecosystem in Liya Togo Village comprises four true mangrove species Rhizophora Mucronata, Rhizophora Apiculata, Brugeira Cylindrica, and Xylocarpus Granatum. with a total of 171 individuals recorded. Rhizophora mucronata dominated the tree stratum (INP 96.28), whereas Bruguiera cylindrica dominated the pole (INP 83.83), sapling (INP 96.26), and seedling (INP 63.10) strata. Biodiversity levels were classified as moderate across all growth strata, with Shannon-Wiener Index (H') values consistently ranging from 1.34 to 1.37. This indicates a relatively even distribution of individuals among species with no single species exerting absolute dominance reflecting an ecological balance that remains intact despite the pressures of illegal logging activities.

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