Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Jurnal Biologi Tropis
Made Dendy Pratama
Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Potency of Gastropods as Ecological Bioindicators in the Anthropogenic Waters of Geger Beach Bay, Bali I Made Dwi Guna Wijaya; Farhan Yudhistira Kurniawan; Maria Inggrit Indrayanti Soko; Uni Putri Audia Marpaung; Made Dendy Pratama
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11379

Abstract

The increasing pressure of tourism and urbanization in coastal areas like Bali often leads to environmental degradation, necessitating a robust biomonitoring system. Gastropods serve as ideal ecological bioindicators due to their limited mobility and specific tolerance to environmental stress. This study aims to assess the water quality of Geger Beach Bay using gastropods as indicators. Observations were conducted at three stations—upstream, midstream, and downstream—using the quadrant transect method. Community analysis included diversity (H'), evenness (E), and dominance (C) indices, alongside physicochemical water parameters. The results showed significant variations in community structure. The downstream station recorded the highest diversity (H' = 2.47) and abundance (129 individuals) due to stable salinity, while the upstream station had the lowest diversity (H' = 1.31) despite high DO, likely due to unstable substrate. PCA analysis confirmed that DO, temperature, and salinity were the primary environmental drivers. Low salinity (15-17 ppt) and pH levels indicate freshwater dilution from nearby hotel effluent. Overall, gastropods are effective bioindicators for coastal health, providing a scientific basis for sustainable management, specifically recommending improved wastewater treatment to preserve biodiversity.
Macroinvertebrates as Bioindicators of Water Quality in Karang Beach, Bali Gede Bayu Hendra Adi Putra; Rafi Radithya; Putu Anggi Handaresta Dewi; Revalina Aprilia; Made Dendy Pratama
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12825

Abstract

Karang Beach is a shallow water with a sandy substrate mixed with coral fragments and seagrass beds that support the life of benthic organisms. This study aims to determine the water quality at Karang Beach using macroinvertebrates as bioindicators. Sampling was conducted on November 1 and 25, 2025, using field survey methods (in situ) and laboratory analysis (ex situ). Water quality parameters measured included temperature, pH, turbidity, and current velocity. The measurement results showed relatively stable water conditions with an average temperature of 25.5°C, pH 8.1, and turbidity ranging from 3.3–4.8 NTU. The macroinvertebrates found came from the families Toxopneustidae, Grapsidae, and Holothuriidae. Analysis using the Family Biotic Index (FBI) at stations 1 to 4 showed that the water quality at Karang Beach was in a moderately stressed to poor condition, characterized by the dominance of organisms tolerant to environmental disturbances.
Co-Authors Farhan Yudhistira Kurniawan Gede Bayu Hendra Adi Putra I Made Dwi Guna Wijaya Maria Inggrit Indrayanti Soko Putu Anggi Handaresta Dewi Rafi Radithya Revalina Aprilia Uni Putri Audia Marpaung