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Muhammad Fauzi
Department of Aquatic Resources Management, Faculty of Fisheries and Marine, Universitas Riau
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Social Sciences

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 1 
Species and Density of Starfish (Asteroidea) in Seagrass Ecosystems at Pengudang Village, Bintan Regency, Kepulauan Riau M. Adnin Firmansyah Simanjuntak; Adriman Adriman; Muhammad Fauzi
Jurnal Perikanan dan Kelautan Vol. 31 No. 1 (2026): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.1.105-112

Abstract

Sea stars, members of the Echinodermata phylum, are closely associated with seagrass beds and play a role in the food chain. High seagrass cover supports a variety of biota, including sea stars. This study aims to determine the types and density of starfish (Asteroidea) in the seagrass ecosystem of Pengudang Village, Bintan Regency, Kepulauan Riau Province. This research was conducted in September 2024 in Pengudang Village, Bintan Regency, Kepulauan Riau Province. Starfish sampling and observation were conducted at three station points, with each station having three transect lines.  Each transect contained ten observation plots measuring 1×1 m. Two species of starfish were found during the study in Pengudang village: Archaster typicus (73 individuals) and Protoreaster nodosus (14 individuals). The density of starfish found during research in Pengudang Village ranged from 700 to 13,700 individuals per hectare. Water quality conditions during the study were classified as good for supporting starfish life, with temperatures ranging from 29.7 to 31.3°C, current speeds from 0.055 to 0.076 m/s, salinity from 29.9 to 31.6 ppt, and dissolved oxygen from 6.82 to 7.66 mg/L.
Type and Abundance of Phytoplankton in Lubuk Larangan Area, Sungai Paku Village, Kampar District, Riau Rama Wahyudi; Muhammad Fauzi; Eko Purwanto
Jurnal Perikanan dan Kelautan Vol. 31 No. 1 (2026): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.1.85-90

Abstract

This study aims to determine the types and abundances of phytoplankton species in Lubuk Larangan, Desa Sungai Paku. This research was conducted in May-June 2024 in Lubuk Larangan, Sungai Paku Village, Kampar Kiri District, Kampar Regency. The method used was the survey method, and data analysis was conducted using statistical tests. Phytoplankton species found in Lubuk Larangan, Sungai Paku Village, were 33 species belonging to 5 classes: Chlorophyceae, Cyanophyceae, Diatome, Euglenophyceae, and Zygnematophyceae. The abundance of phytoplankton species ranged from 7.080 to 16.800 cells/L. The highest phytoplankton abundance was at station II (16.800 cells/L), and the lowest was at station I (7.080,8 cells/L). Diversity index values ranged from 3.2883 to 3.7419, uniformity index 0.90 to 0.95, and dominance index 0.08 to 0.11. The high abundance of phytoplankton species obtained in the lubuk larangan (Station II) compared to the area outside the lubuk larangan (Stations I and III) indicates a difference type and abundance of phytoplankton with the results of the T test obtained a significant value of 0.028 (p < 0.05) and the value of T count is 3.374 and the value of T table is 2.77645 where T count is greater than T table
Species and Density of Starfish (Asteroidea) in Seagrass Ecosystems at Pengudang Village, Bintan Regency, Kepulauan Riau M. Adnin Firmansyah Simanjuntak; Adriman Adriman; Muhammad Fauzi
Jurnal Perikanan dan Kelautan Vol. 31 No. 1 (2026): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.1.105-112

Abstract

Sea stars, members of the Echinodermata phylum, are closely associated with seagrass beds and play a role in the food chain. High seagrass cover supports a variety of biota, including sea stars. This study aims to determine the types and density of starfish (Asteroidea) in the seagrass ecosystem of Pengudang Village, Bintan Regency, Kepulauan Riau Province. This research was conducted in September 2024 in Pengudang Village, Bintan Regency, Kepulauan Riau Province. Starfish sampling and observation were conducted at three station points, with each station having three transect lines.  Each transect contained ten observation plots measuring 1×1 m. Two species of starfish were found during the study in Pengudang village: Archaster typicus (73 individuals) and Protoreaster nodosus (14 individuals). The density of starfish found during research in Pengudang Village ranged from 700 to 13,700 individuals per hectare. Water quality conditions during the study were classified as good for supporting starfish life, with temperatures ranging from 29.7 to 31.3°C, current speeds from 0.055 to 0.076 m/s, salinity from 29.9 to 31.6 ppt, and dissolved oxygen from 6.82 to 7.66 mg/L.
Type and Abundance of Phytoplankton in Lubuk Larangan Area, Sungai Paku Village, Kampar District, Riau Rama Wahyudi; Muhammad Fauzi; Eko Purwanto
Jurnal Perikanan dan Kelautan Vol. 31 No. 1 (2026): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.1.85-90

Abstract

This study aims to determine the types and abundances of phytoplankton species in Lubuk Larangan, Desa Sungai Paku. This research was conducted in May-June 2024 in Lubuk Larangan, Sungai Paku Village, Kampar Kiri District, Kampar Regency. The method used was the survey method, and data analysis was conducted using statistical tests. Phytoplankton species found in Lubuk Larangan, Sungai Paku Village, were 33 species belonging to 5 classes: Chlorophyceae, Cyanophyceae, Diatome, Euglenophyceae, and Zygnematophyceae. The abundance of phytoplankton species ranged from 7.080 to 16.800 cells/L. The highest phytoplankton abundance was at station II (16.800 cells/L), and the lowest was at station I (7.080,8 cells/L). Diversity index values ranged from 3.2883 to 3.7419, uniformity index 0.90 to 0.95, and dominance index 0.08 to 0.11. The high abundance of phytoplankton species obtained in the lubuk larangan (Station II) compared to the area outside the lubuk larangan (Stations I and III) indicates a difference type and abundance of phytoplankton with the results of the T test obtained a significant value of 0.028 (p < 0.05) and the value of T count is 3.374 and the value of T table is 2.77645 where T count is greater than T table
Co-Authors Adriman Adriman Eko Purwanto M. Adnin Firmansyah Simanjuntak Rama Wahyudi