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Zooplankton Community Structure Based on Different Depths at the Kambang River Estuary, Pesisir Selatan Regency West Sumatra Selvia, Seli; Siregar, Sofyan Husein; Nurrachmi, Irvina
Jurnal Perikanan dan Kelautan Vol. 28 No. 3 (2023): October
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

This research was conducted in March 2022 at the estuary of the Kambang River, Pesisir Selatan Regency, West Sumatra. This study aims to analyze the structure of the zooplankton community based on depth. The method used is a survey method by determining the sampling location by purposive sampling and zooplankton sampling points by stratified sampling. Sampling of zooplankton utilizing a water pump and filtered using plankton net no. 25, then brought to the laboratory to be identified and the community structure calculated. Sampling was accompanied by water quality pH, temperature, salinity, brightness, current velocity and DO measurements. Four zooplankton species were found in the Kambang River Estuary: Aetideus armatus, Macrosetella sp., Oithona sp., and Cyclops sp. The average value of zooplankton abundance during the day ranged from 1,938.61 - 2,492.50 ind/L, and in the afternoon 1,938.61 - 2,769.45 ind/L, the diversity index during the day was 1.28 - 1.55 and in the afternoon 1.28 - 1.36, the index of uniformity during the day was 0.72 - 0.98 and in the afternoon 0.86 - 0.98, while the index of dominance during the day was 0.40 - 0.53 and in the afternoon 0.40 - 0.52. The one-way ANOVA test results obtained an average value of 0.010 during the day and 0.029 in the afternoon, meaning there was a significant difference in zooplankton abundance between research depths

Diversity and Abundance of Epiphytic Diatoms on Seagrass Leaves (Enhalus acoroides) in Poncan Gadang Island Sibolga City, North Sumatra Dinda Trie K Hayati; Sofyan Husein Siregar; Rifardi Rifardi
Jurnal Natur Indonesia Vol. 21 No. 2 (2023): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

The seagrass ecosystem is one of the marine ecosystems that has an important role, namely as a source of life for organisms in the sea. Diatoms are microalgae widely distributed throughout the aquatic environment and are even found in plants, including seagrass leaves. Diatoms greatly influence life in the waters because they play an essential role as a food source for various marine organisms and play a role in the transfer of carbon, nitrogen, and phosphate. This research was conducted in February 2023 on Poncan Gadang Island, Sibolga City, North Sumatra. The study aims to determine the density, relative abundance, abundance, and diversity of epiphytic diatom species on seagrass (Enhalus acoroides) leaves in Poncan Gadang Island. The method used is the survey method, using three stations to take samples. The determination of 3 stations is based on the density of the seagrass beds ecosystem. Sampling of diatoms was carried out by brushing the surface of seagrass leaves about 5x2 cm on the front and back of the leaves. The samples obtained were then analyzed in the laboratory. There were 12 types of diatoms found, consisting of Cocconeis sp., Rhizosolenia sp., Biddulphia sp., Amphipluera sp., Thalassiotrix sp., Nitzchia sp., Synedra sp., Melosira sp., Pleurogosigma sp., Skeletonema sp., Licmiphora sp., and Thalassionema sp. the average value of epiphytic diatom abundance in seagrass leaves ranged from 2160.85 – 4649.94 ind/cm². The epiphytic diatom diversity (H') values ranged from 2.53 to 2.72.

Survival and Growth of Pangasianodon hypophthalmus Fed with Moringa oleifera Enriched Pellets and Reared in Tank with Aquaponic System and Dark Condition Windarti Windarti; Sofyan Husein Siregar; Asmika Harnalin Simarmata; Joko Samiaji
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Pangasianodon hypophthalmus grows well in a dark tank completed with an aquaponic system. To improve the growth, a feed supplement made from Moringa oleifera might be used as it is rich in protein, vitamins A, B, C, and minerals. To understand the effect of M.oleifera addition in the feed of fish, research has been conducted in June-July 2022. M. oleifera leaves were dried and powdered and then mixed with commercial fish feed pellets. There were 4 treatments of M. oleifera dosages, namely T0 (no M. oleifera), T1 (10 g/kg), T2 (15 g/kg), and T3 (20 g/kg). The fish was reared in a 100L container (30 fishes/tank, around 4 g BW and 8 cm TL), covered with a dark-colored tarp, and completed with the aquaponic system using Ipomoea aquatica. The feed was given 2 times/day, ad libitum. Samplings were conducted once/10 days, for 40 days. Results showed that the survival of fish in all treatments was 93.3 – 98.89%. The growth of fish, however, was different. There was no difference in fish body weight (BW), total length (TL), and specific growth rate (SGR) of fish fed with Moringa, they were around 23.5 g BW, 5.8 cm TL, and 4.3 cm SGR respectively. While those of the control fish were 13.0 g BW, 4.23 cm TL, and 2.89% per day SGR respectively. The fish that was fed with Moringa-enriched pellets showed the highest Feed Efficiency (90.42-97.46%) and the lowest FCR (1.03 – 1.11). While in the fish that was not fed with Moringa showed the lowest FE (75.48%) and the highest FCR (1.33%). Data obtained indicate that Moringa positively improves the growth of fish as well as improving feed efficiency

Diversity and Abundance of Epiphytic Diatoms on Seagrass Leaves (Enhalus acoroides) in Poncan Gadang Island Sibolga City, North Sumatra Dinda Trie K Hayati; Sofyan Husein Siregar; Rifardi Rifardi
Jurnal Natur Indonesia Vol. 21 No. 2 (2023): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

The seagrass ecosystem is one of the marine ecosystems that has an important role, namely as a source of life for organisms in the sea. Diatoms are microalgae widely distributed throughout the aquatic environment and are even found in plants, including seagrass leaves. Diatoms greatly influence life in the waters because they play an essential role as a food source for various marine organisms and play a role in the transfer of carbon, nitrogen, and phosphate. This research was conducted in February 2023 on Poncan Gadang Island, Sibolga City, North Sumatra. The study aims to determine the density, relative abundance, abundance, and diversity of epiphytic diatom species on seagrass (Enhalus acoroides) leaves in Poncan Gadang Island. The method used is the survey method, using three stations to take samples. The determination of 3 stations is based on the density of the seagrass beds ecosystem. Sampling of diatoms was carried out by brushing the surface of seagrass leaves about 5x2 cm on the front and back of the leaves. The samples obtained were then analyzed in the laboratory. There were 12 types of diatoms found, consisting of Cocconeis sp., Rhizosolenia sp., Biddulphia sp., Amphipluera sp., Thalassiotrix sp., Nitzchia sp., Synedra sp., Melosira sp., Pleurogosigma sp., Skeletonema sp., Licmiphora sp., and Thalassionema sp. the average value of epiphytic diatom abundance in seagrass leaves ranged from 2160.85 – 4649.94 ind/cm². The epiphytic diatom diversity (H') values ranged from 2.53 to 2.72.

Survival and Growth of Pangasianodon hypophthalmus Fed with Moringa oleifera Enriched Pellets and Reared in Tank with Aquaponic System and Dark Condition Windarti Windarti; Sofyan Husein Siregar; Asmika Harnalin Simarmata; Joko Samiaji
Jurnal Natur Indonesia Vol. 21 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.1-6

Pangasianodon hypophthalmus grows well in a dark tank completed with an aquaponic system. To improve the growth, a feed supplement made from Moringa oleifera might be used as it is rich in protein, vitamins A, B, C, and minerals. To understand the effect of M.oleifera addition in the feed of fish, research has been conducted in June-July 2022. M. oleifera leaves were dried and powdered and then mixed with commercial fish feed pellets. There were 4 treatments of M. oleifera dosages, namely T0 (no M. oleifera), T1 (10 g/kg), T2 (15 g/kg), and T3 (20 g/kg). The fish was reared in a 100L container (30 fishes/tank, around 4 g BW and 8 cm TL), covered with a dark-colored tarp, and completed with the aquaponic system using Ipomoea aquatica. The feed was given 2 times/day, ad libitum. Samplings were conducted once/10 days, for 40 days. Results showed that the survival of fish in all treatments was 93.3 – 98.89%. The growth of fish, however, was different. There was no difference in fish body weight (BW), total length (TL), and specific growth rate (SGR) of fish fed with Moringa, they were around 23.5 g BW, 5.8 cm TL, and 4.3 cm SGR respectively. While those of the control fish were 13.0 g BW, 4.23 cm TL, and 2.89% per day SGR respectively. The fish that was fed with Moringa-enriched pellets showed the highest Feed Efficiency (90.42-97.46%) and the lowest FCR (1.03 – 1.11). While in the fish that was not fed with Moringa showed the lowest FE (75.48%) and the highest FCR (1.33%). Data obtained indicate that Moringa positively improves the growth of fish as well as improving feed efficiency.

PENINGKATAN PENGETAHUAN MASYARAKAT TENTANG KESEHATAN LINGKUNGAN MELALUI PROGRAM EDUKASI DI KABUPATEN KUANTAN SINGINGI: PKM Rizka Aprisanti; Aras Mulyadi; Sofyan Husein Siregar; Ridwan manda Putra; Chitra Hermawan; Trinop Sagiarti
BHAKTI NAGORI (Jurnal Pengabdian kepada Masyarakat) Vol. 4 No. 2 (2024): BHAKTI NAGORI (Jurnal Pengabdian kepada Masyarakat) Desember 2024
Publisher : LPPM UNIKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/bhakti_nagori.v4i2.4145

Program edukasi kesehatan lingkungan ini dilaksanakan untuk meningkatkan pengetahuan dan kesadaran masyarakat Kabupaten Kuantan Singingi mengenai pentingnya menjaga kebersihan lingkungan dalam upaya mencegah berbagai penyakit. Pengabdian ini menggunakan pendekatan partisipatif dengan metode penyuluhan dan pelatihan langsung kepada masyarakat. Program ini dilakukan di tiga kecamatan dengan melibatkan 150 responden dari berbagai kalangan usia. Hasil dari program ini menunjukkan peningkatan pengetahuan yang signifikan mengenai kesehatan lingkungan dan kebersihan, serta perubahan perilaku yang positif dalam menjaga kebersihan lingkungan. Melalui program ini, diharapkan masyarakat dapat mengimplementasikan perilaku hidup bersih dan sehat di kehidupan sehari-hari.

Relationship of Total Oil Content and Planktonic Diatoms Abundance in the Coastal Waters of Lukit Kepulauan Meranti Yuliani, Riza; Siregar, Sofyan Husein; Amin, Bintal
Jurnal Perikanan dan Kelautan Vol. 29 No. 3 (2024): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.29.3.343-349

This research was conducted in January 2024 in the waters of Lukit, Merbau District, Meranti Islands. This study aimed to analyze the total oil content and abundance of planktonic diatoms and determine the relationship between total oil content and abundance of planktonic diatoms. This study used a purposive sampling method. The sampling location was divided into three stations with three sampling points. Station 1 is in the oil company jetty area, Station 2 is in the crossing port area, and station 3 is far away from residential areas. The results of the analysis of total oil content was 0,252 ppm. The highest oil content was found at station 2, which was 0,274 ppm, and the lowest oil content was found at station 3, which was 0,222 ppm. The results of the planktonic diatom abundance ranged from 75 – 187,5 ind/L. The highest abundance was found at station 3, which was 166,67 ind/L, and the lowest was found at station 2, which was 79,17 ind/L. The results of the simple linear regression test obtained the equation y= 177,77-225,55x with the value of R² = 0,1321 and the correlation coefficient r = -0,36, which shows that higher total oil content will cause a decrease in the abundance of planktonic diatoms

Plankton Community Structure in Kasiak Island Waters Pariaman City, West Sumatra Province Febbyolla, Selfi Anidal; Siregar, Sofyan Husein; Nurrachmi, Irvina
Jurnal Perikanan dan Kelautan Vol. 29 No. 1 (2024): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

This study was conducted in September 2022 in Kasiak Island Water, Pariaman City, West Sumatra Province. This study aimed to analyze the community structure of phytoplankton and zooplankton and the relationship between the abundance of phytoplankton and zooplankton in the waters of Kasiak Island. The method used is the survey method. Plankton sampling was carried out at four stations with three sampling points. Plankton samples were obtained by filtering 100 L of surface water to 125 mL and then analyzed in the laboratory. The results obtained were 21 species of phytoplankton and 11 species of zooplankton. The average abundance of phytoplankton in the morning ranged from 923.15–2400.19 ind/L, and during the day ranged from 1200.09–2,492.50 ind/L. The average abundance of zooplankton in the waters of Kasiak Island in the morning went from 369,26–1,200.09 ind/L and, during the day, ranged from 369,26–1,384.72 ind/L. Phytoplankton biological indicators such as the diversity index (H') in the morning ranged from 0.6096–2.3075 and during the day ranged from1.3894–2.0129, the uniformity index (E) in the morning ranged from 0.4844–0.9851 and during the day ranged from 0.9060–0.9624, and the dominance index (D) in the morning ranged from 0.2181–0.6617 and during the day ranged from 0.2833–0.4248. While zooplankton biological indicators such as the diversity index (H') in the morning ranged from 0.2704–0.8617 and during the day ranged from 0.3333–1.1950, the uniformity index (E) in the morning ranged from 0.2704–0.6667 and during the day ranged from 0.3333–0.6667, and the dominance index (D) in the morning ranged from0.6111–0.8750 and during the day ranged from 0.5278–0.8333. The relationship between the abundance of phytoplankton and zooplankton in the morning and during the day is a moderate (positive). The regression equation in the morning isY = 0.1356x + 434.5 3and during the day it isY = 0.1845x + 362.01.

VERTICAL DIVERSITY OF EPIPHYTIC DIATOMS ON STEMS OF Rhizophora sp AND FRONDS OF Nypa sp IN KUNDUR WATERS KARIMUN REGENCY, RIAU ISLANDS PROVINCE Rini, Yulia Sapta; Efriyeldi, Efriyeldi; Siregar, Sofyan Husein
Asian Journal of Aquatic Sciences Vol. 7 No. 2 (2024): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.7.2.216-225

This study was conducted in the waters of Kundur Island, Karimun Regency, Riau Islands Province, to assess the type, abundance, and diversity of epiphytic diatoms on Rhizophora sp stems and Nypa sp fronds using a survey method and purposive sampling for station selection. One-way ANOVA, LSD tests, and the Independent Samples T-test were employed for data analysis. The research identified 11 species of epiphytic diatoms: 9 from the Bacillariophyceae class (including Navicula sp, Pleurosigma sp, Pinnularia sp, and Skeletonema costatum); Isthmia sp from the Coscinodiscophycidae class, and Chaetoceros sp from the Bacillariophyceae class. The results indicated a higher abundance of diatoms on Nypa sp fronds (17,822.94 ind/cm²) than on Rhizophora sp stems (13,884.16 ind/cm²). Significant differences in diatom abundance were observed between stations on Rhizophora sp. stems, particularly between stations II and III. In contrast, no significant differences were found between stations I and II or stations I and III. No significant differences in diatom abundance were observed between stations on Nypa sp fronds. The T-test results revealed significant vertical differences in diatom abundance between Rhizophora sp stems and Nypa sp fronds. Overall, the diversity of epiphytic diatoms was categorized as medium on both Rhizophora sp stems and Nypa sp fronds in the waters of Kundur Island, Karimun Regency, Riau Islands Province. This study contributes valuable insights into the ecological dynamics of epiphytic diatoms in mangrove and nipa palm habitats.

Plankton Community Structure and Water Environment Conditions in The Pelintung Industry Area, Dumai Nurrachmi, Irvina; Amin, Bintal; Siregar, Sofyan Husein; Galib, Musrifin
Journal of Coastal and Ocean Sciences Vol. 2 No. 1 (2021): January
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.2.1.15-27

This research was conducted in July 2020 in Pelintung Industrial Area Waters, Dumai City, Riau Province. The purpose of this study was to determine the community structure of phytoplankton and zooplankton and the condition of their aquatic environment. The method used in this research is a survey method. The phytoplankton community structure shows H 'values ranging from 3.62 to 4.02, E values ranging from 0.78 to 0.85. and C values ranged from 0.08 to 0.12 while the zooplankton community structure values for H 'values ranged (0.0000 - 2.2140, E values ranged (E) (0.0000 - 0.6665), and C values ranged (0.2325 - 1.0000) For the abundance of phytoplankton 18.90 ind / L - 55.56 ind / L and zooplankton 10.29 - 23.05 ind / L, this value shows that the waters of the Pelintung industrial area are still relatively good, not yet polluted from being able to support biota. Nitrate concentrations in these waters range from 0.096 to 0.179 ppm while Phosphate ranges from 0.084 to 0.106 ppm.

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