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Journal : Jurnal Perikanan

CHARACTERISTICS OF FISH COMMUNTIES ASSOCIATIONS IN THE WATER OF MALAHING VILLAGE, BONTANG CITY, EAST KALIMANTAN Atmawati, Yuni Khusnul; Irawan, Aditya; Sari, Lily Inderia
Jurnal Perikanan Unram Vol 15 No 3 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i3.1483

Abstract

The important role of seagrass beds as habitat for fish communities, both as nursery ground, feeding ground and shelter. The aim of the research was to determine the association of fish communities in seagrass beds in relation to the characteristics of the seagrass species that make up the seagrass beds. The research was carried out in seagrass beds in the waters of Malahing Village, Bontang City, East Kalimantan from October 2024–February 2025, using a purposive sampling method. Sampling consisted of 2 stations with three repetitions. Fish samples were taken using a trap net and seagrass density using a 50x50cm square frame. The seagrass species found at both stations consisted of E. acoroides and T. hemprichii. The fish species caught consisted of 10 families, 11 genera and 15 species. Fish community association was positively correlated with T. hemprichii density.
THE ABUNDANCE AND DIVERSITY OF MEGAGASTROPODA IN SEAGRASS BED ECOSYSTEM IN THE WATERS OF TIHI-TIHI VILLAGE, BONTANG CITY, EAST KALIMANTAN Rahmasari, Dewi; irawan, aditya_irawan; Sari, Lily Inderia
Jurnal Perikanan Unram Vol 15 No 3 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i3.1492

Abstract

Seagrass beds provide habitat for the abundance and diversity of megagastropods that form the food chain in supporting the productivity of coastal waters. The purpose of this study was to determine the diversity and abundance of megagastropoda in the seagrass beds of Tihi-Tihi Village. This study was conducted in October 2024 - February 2025 using a purposive sampling method. Megagastropoda sampling using Van Veen Grab and seagrass stands using 50x50cm square frames. Data analysis included abundance, community structure index and morphometrics of individual megagastropoda, and seagrass stand density and Pearson Product Moment correlation analysis. The results of the study found 18 species of megagastropoda. Diversity in moderate criteria, moderate population uniformity and dominance in moderate criteria with an abundance of individuals reaching 567 individuals/m2. The seagrass found 4 species of seagrass, namely E. acoroides, T. hemprichii, C. rotundata, and H. ovalis. There is a positive and very close correlation between the abundance of megagastropoda and the characteristics of seagrass density.