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ANALISIS STRUKTUR DAN POLA PERTUMBUHAN IKAN PAYANGKA (Ophieleotris aporos) DI DANAU LIMBOTO Mokoginta, Ayatola R.; Mamangkey, Jefry J.; Rampengan, Mercy M. F; Ogi, Nova L I M; Lawalata, Helen J.
SOSCIED Vol 7 No 2 (2024): SOSCIED - November 2024
Publisher : LPPM Politeknik Saint Paul Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32531/jsoscied.v7i2.888

Payangka fish (Ophieleotris aporos) is a fish that lives in freshwater and has the ability to survive in the midst of competition with other fishes that are very tough. This study aims to analyze the structure of payangka fish and the growth pattern of payangka fish in Lake Limboto. Fish samples were caught using a 2 cm net with a net length of 7 m and then a 1 m serok (sibusibu) with a total sample of 1003 fish. The results of the length structure analysis of payangka fish obtained a length range of 9.15 - 19.05cm with an average of 12.45 cm and the results of the weight structure analysis obtained a range of 9.27 - 47.97 grams with an average of 13.57 grams. The results of the analysis of the relationship between length and weight of payangka fish obtained allometric growth pattern (b = 2.92), b < 3 which means that weight gain is faster than length gain..

Analysis of Clean Water Quality in Kolongan Village, Talawaan District Tarigan, Irama Rauli Tarigan; Rampengan, Mercy; Ogi, Nova L I M
Indonesian Biodiversity Journal Vol. 5 No. 1 (2024): April 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i1.7784

Kolongan Village is one of the villages in Talawaan district of North Minahasa, North Sulawesi. In the village of Kolongan, some springs are potentially a clean water source for the people of the village. This research aims to analyze the quality of the springs in the village of Kolongan Talawaan, Prefectures as a water source. This type of research is quantitative, and the method used in this research is the Indonesian National Standard (SNI) according to the water quality parameters that have been established with the direct observation plan of the physical properties of water and with the laboratory testing plan for the observation of water chemical and biological properties with indicators of iron, sensitivity, manganese, E.coli, taste, and smell. The research was conducted from July 24, 2021, to September 20, 2021. The water quality measurement results in the spring in one village of Kolongan showed iron <0.0086 mg/L, iron 69-93 mg/ L, manganese 0.03-0.07 mg / L, E. coli, 11 CFU, not sensitive and odorless. Water source 2 showed iron <0.086 mg / l, density 75-85 mg/ l, manganese 0.02-0.03 mg/l, and E. coli, 3.6-9.2 CFU, is not sensible and odorless. The pollution index calculation indicates that the springs in Kolongan Village belong well. However, because they still contain biological reservoirs, it is necessary to have an advanced process for them to be consumed by the community.

ANALYSIS OF MANGROVE FOREST VEGETATION ON MOLAS BEACH, BUNAKEN DISTRICT, MANADO CITY Futwembun, Fransiska; Lawalata, Helen J; Setyawati, Iriani; Ogi, Nova L I M; Manampiring, Nonny; Mokosuli, Yermia
Indonesian Biodiversity Journal Vol. 5 No. 2 (2024): August 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i2.10753

The lack of scientific information about the current condition of the mangrove ecosystem on the Molas beach in the Bunaken District of Manado City is an important reason to conduct a study related to the analysis of mangrove forest vegetation. The purpose of this research is to identify the types of mangroves and to find the Important Value Index (INP) of mangroves on the Molas beach in the Bunaken District of Manado City. Data collection was conducted using the line transect method with plots at only one observation station, which was then analyzed to determine the Importance Value Index (INP). Based on the observations, it was found that four types of mangroves were present at the research location. The dominant mangrove species are Bruguiera Cylindrica, Bruguiera gymnorrhiza, Aegiceras cosniculatum, and Ceriops tagal. The substrate condition, which is dominated by muddy sand, and the water quality parameters that affect mangrove growth generally still meet the standards for mangrove growth. The species Ceriops tagal has the highest values of Relative Density, Relative Frequency, and Relative Dominance, resulting in the highest INP. Meanwhile, the lowest INP was found in the species Bruguiera gymnorrhiza in the tree category

Analysis of Clean Water Quality in Kolongan Village, Talawaan District Tarigan, Irama Rauli Tarigan; Rampengan, Mercy; Ogi, Nova L I M
Indonesian Biodiversity Journal Vol. 5 No. 1 (2024): April 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i1.7784

Kolongan Village is one of the villages in Talawaan district of North Minahasa, North Sulawesi. In the village of Kolongan, some springs are potentially a clean water source for the people of the village. This research aims to analyze the quality of the springs in the village of Kolongan Talawaan, Prefectures as a water source. This type of research is quantitative, and the method used in this research is the Indonesian National Standard (SNI) according to the water quality parameters that have been established with the direct observation plan of the physical properties of water and with the laboratory testing plan for the observation of water chemical and biological properties with indicators of iron, sensitivity, manganese, E.coli, taste, and smell. The research was conducted from July 24, 2021, to September 20, 2021. The water quality measurement results in the spring in one village of Kolongan showed iron <0.0086 mg/L, iron 69-93 mg/ L, manganese 0.03-0.07 mg / L, E. coli, 11 CFU, not sensitive and odorless. Water source 2 showed iron <0.086 mg / l, density 75-85 mg/ l, manganese 0.02-0.03 mg/l, and E. coli, 3.6-9.2 CFU, is not sensible and odorless. The pollution index calculation indicates that the springs in Kolongan Village belong well. However, because they still contain biological reservoirs, it is necessary to have an advanced process for them to be consumed by the community.

ANALYSIS OF MANGROVE FOREST VEGETATION ON MOLAS BEACH, BUNAKEN DISTRICT, MANADO CITY Futwembun, Fransiska; Lawalata, Helen J; Setyawati, Iriani; Ogi, Nova L I M; Manampiring, Nonny; Mokosuli, Yermia
Indonesian Biodiversity Journal Vol. 5 No. 2 (2024): August 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i2.10753

The lack of scientific information about the current condition of the mangrove ecosystem on the Molas beach in the Bunaken District of Manado City is an important reason to conduct a study related to the analysis of mangrove forest vegetation. The purpose of this research is to identify the types of mangroves and to find the Important Value Index (INP) of mangroves on the Molas beach in the Bunaken District of Manado City. Data collection was conducted using the line transect method with plots at only one observation station, which was then analyzed to determine the Importance Value Index (INP). Based on the observations, it was found that four types of mangroves were present at the research location. The dominant mangrove species are Bruguiera Cylindrica, Bruguiera gymnorrhiza, Aegiceras cosniculatum, and Ceriops tagal. The substrate condition, which is dominated by muddy sand, and the water quality parameters that affect mangrove growth generally still meet the standards for mangrove growth. The species Ceriops tagal has the highest values of Relative Density, Relative Frequency, and Relative Dominance, resulting in the highest INP. Meanwhile, the lowest INP was found in the species Bruguiera gymnorrhiza in the tree category

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