Community Structure of Epiphytic Diatoms on Seagrass Leaves Thalassia hemprichii in Cindakir Beach Kabung Bay, West Sumatra
DOI:
https://doi.org/10.31258/jocos.7.1.58-65Keywords:
Epiphytic diatoms, Community structure, Seagrass leaves, Thalassia hemprichii, Cindakir BeachAbstract
Indonesia is known for its high natural resource diversity, both on land and in its waters. This research aims to determine the types and abundance of epiphytic diatoms on Thalassia hemprichii seagrass leaves at each station, analyze differences in abundance between stations, and analyze the diversity, dominance, and uniformity indices of epiphytic diatom species on Thalassia hemprichii seagrass leaves in the waters of Cindakir Beach, Kabung Bay, West Sumatra. This research was conducted in March 2025 in the waters of Cindakir Beach, Kabung Bay, West Sumatra, and the identification and analysis of epiphytic diatoms were carried out at the Marine Biology Laboratory of the Faculty of Fisheries and Marine, Universitas Riau. The method used was a survey. Based on the research results, the abundance of epiphytic diatoms ranged from 1,287- 6,648 ind/cm², the diversity index (H’) ranged from 0.9254 -2.2010 (moderate category), the dominance index (C) ranged from 0.2364 - 0.6566, with the dominant species at Station I, and the species evenness index (E) ranged from 0.5845 - 0.9855, indicating that the species evenness of diatoms in the waters of Cindakir Beach is relatively stable. The identification identified 14 epiphytic diatom species: Nitzschia sp., Cymbella sp., Cocconeis sp., Flagilaria sp., Meridion sp., Licmophora sp., Gyrosigma sp., Navicula sp., Pleurosigma sp., Pinnularia sp., Synedra sp., Rhizosolenia sp., Surirella sp., and Amphora sp. The most frequently found species with the highest abundance were Rhizosolenia sp. and Nitzschia sp
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Copyright (c) 2026 Windy Lasma Sari Purba, Efriyeldi Efriyeldi, Sofyan Husein Siregar (Author)
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