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All Journal Jurnal Ilmu Lingkungan Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Biosfer: Jurnal Tadris Biologi Quagga Aceh Journal of Animal Science BIOMA Jurnal Penelitian Pendidikan IPA (JPPIPA) EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Jurnal Ilmu Alam dan Lingkungan Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi CHEESA: Chemical Engineering Research Articles BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Jurnal Biosilampari: Jurnal Biologi Gorontalo Fisheries Journal Jambura Journal of Animal Science JPBIO (Jurnal Pendidikan Biologi) Jurnal Eduscience (JES) Jurnal Pembelajaran dan Biologi Nukleus Konservasi Hayati UTAMAX : Journal of Ultimate Research and Trends in Education Bioscientist : Jurnal Ilmiah Biologi Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Journal of Environmental and Development Studies Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Rusdi Machrizal
Departement Of Biology Education, Universitas Labuhanbatu
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences Veterinary Other

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Length – Weight Relationship Analysis and Condition Factor Blood Clams (Anadara granosa) In Panipahan, Rokan Hilir Regency, Riau Province Asmita, Manja; Machrizal, Rusdi
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 9, No 2: Jurnal Pembelajaran Dan Biologi Nukleus July 2023
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v9i2.4386

Abstract

This research was conducted in the Rokan Hilir district with the aim of analyzing the length-weight relationship and condition factors of blood clams (Anadara granosa). The benefit of this research is to provide information about the length of weight and condition factors of A. granosa which can be used as a reference in cultivation and further research. This research was carried out for 90 days from October to December 2021, in the waters of Panipahan, Rokan Hilir Regency. This length-weight relationship was calculated using a linear allometric model (LAM), while the condition factor was calculated using the Fulton formula (K) and relative weight (Wr). The results of the analysis of the length-weight relationship of blood clams get a value of b <3 = 0.894, which is a negative allometric where the increase in length is faster than the growth in weight. With the value of relative weight (Wr) 71,325-149,883 and Fulton’s condition factor (K) 75,372-387,106. This is caused by environmental conditions that are quite good in supporting blood clams (A. granosa) . in the waters of Panipahan Kab. Rokan Hilir
Bioecological Aspect of Lakepe (Betta raja) in Natural Habitat of Bandar Tinggi Village, Rantau Selatan District, Labuhan Batu Regency Khairul; Machrizal, Rusdi; Wahyungsih, Hesti
Journal of Environmental and Development Studies Vol. 1 No. 01 (2020): Journal of Environmental and Development Studies
Publisher : TALENTA Publisher, Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jeds.v1i1.4606

Abstract

Lakepe (Betta raja) is a wild fish species inhabiting water region in Labuhanbatu regency. The fishes are commonly known to inhabit steady and unpolluted streams. The aquatic environmental condition and its ecology will determine the survivability and breeding of Betta raja in its natural habitat.A study of its ecological aspect is needed to obtain any physicochemical characteristics of natural habitat which may act as limiting factor to Betta raja presence. In this study, physicochemical characteristics of water are measured, i.e temperature (T), velocity, pH, dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), total dissolved solid (TDS), and total suspended solid (TSS). The environmental condition are measured in the field (in situ) while other parameters, i.e DO, BOD, TDS, and TSS are analyzed in the laboratory. The results showed that the physicochemical characteristics of B. raja habitat are: T (26oC), velocity (0.05 m/s), DO (6.9 mg/L), BOD (3.27 mg/L), COD (8.26 mg/L), TDS (22.1 mg/L), and TSS (5.1 mg/L). The sizes of wild caught B. raja are ranged between 6.3–94.0 cm with body masses of 1.1–4.8 g.
Analisis Kemampuan Berpikir Kreatif dalam Pembelajaran Biologi pada Siswa Kelas XI SMA Negeri 1 Kampung Rakyat Yuliarni, Yuliarni; Machrizal, Rusdi; Harahap, Hasmi Syahputra
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.11196

Abstract

When it comes to the cultivation of human resources for the purpose of achieving a more favorable future, education is basically an imperative prerequisite. The ability to think creatively plays a significant part in higher order thinking since creativity is the factor that influences the amount and kind of qualitative research that is conducted using descriptive techniques. The population that was utilized consisted of students who were enrolled in the first semester of biology instruction at SMA N 1 Kampung Rakyat. A total of 36 individuals were selected for sampling. Interviews are employed as a method of data gathering, and the strategy that is used in data collecting is the distribution of a questionnaire. The findings of the investigation into the analysis in this particular instance indicate that the investigation into the creative thinking abilities of students in class XI at SMA Negeri 1 Kampung Rakyat was conducted in order to learn about biology. That in the first indicator Fluency obtained results totalling 58.33% while in the second indicator Flexibility obtained results totalling 57.87% and in the third indicator Originality obtained results totalling 59.56%. As well as in the fourth indicator Thinking Fluently (Fluency) obtained results totalling 59.56%. As well as in the fourth indicator of Detailed Thinking (Elaboration) obtained a value of 64.89%. In this case, creative thinking in the world of education is a very important thing in obtaining good learning.
Pengembangan Media Pembelajaran IPA Berbasis Game Edukasi Untuk Meningkatkan Minat Belajar Anggreini, Nisah; Siregar, Zunaidy Abdullah; Machrizal, Rusdi
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.14068

Abstract

The learning process is still carried out using manual methods, so students tend to get bored quickly when participating in learning activities in class. The aim of this research is to improve science learning outcomes by applying educational role playing learning methods to Class 7 students at SMPN 2 Ratu for the 2023/2024 academic year. This research was carried out at SMPN 2 Ratu, Labuhanbatu Regency, North Sumatra Province. The subjects in this research were 7th grade students of SMPN 2 Ratu, Labuhanbatu Regency, North Sumatra Province. This research is classroom action research with 2 cycles, each cycle consisting of 4 activities, namely planning, action, observation and reflection followed by planning in the next cycle by utilizing the results of previous reflection. The solution design in question is an action in the form of a role-playing learning method in teaching the subject of the Solar System for Class 7 SMPN 2 Ratu to 31 people. Research findings show that learning science using the educational role playing learning method can improve student learning outcomes as evidenced by the increase in science learning outcomes each cycle, namely from an average of 70.52 to an average of 80.19. students feel happy studying science in the field of biology with material on the greenhouse effect and are interested in learning.
Hubungan Kemandirian, Sikap, dan Motivasi dengan Hasil Belajar Biologi di Kelas X SMA Negeri 1 Bilah Hulu Junita, Rizka; Siregar, Zunaidy Abdullah; Machrizal, Rusdi
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.14069

Abstract

Students’ Biology learning outcomes are influenced by two factors, namely internal and external factors. Internal factors that can influence learning outcomes are independence, attitude and learning motivation. This research aims to investigate the relationship between independence, attitudes and learning motivation with biology learning outcomes in class X SMA Negeri 1 Bilah Hulu. This research is ex post facto research. The research instrument is a questionnaire used to obtain data on independence, attitudes and motivation to learn. Learning outcome data is obtained from daily test scores. Data were analyzed using descriptive and inferential statistical with product moment correlation tests, simple and multiple regression. The results of the research show that (1) students' learning independence is in the high category, (2) students' learning attitudes are in the positive category, (3) students' learning motivation is in the high category, (4) students' biology learning outcomes are in the very high, (5) there is a strong relationship between independence and biology learning outcomes, with a correlation value of 0.680, (6) there is a strong relationship between attitudes and biology learning outcomes, with a correlation value of 0.663, (7) there is a moderate relationship between motivation with biology learning outcomes, with a correlation value of 0.453, (8) there is a strong relationship between independence, attitude and motivation and biology learning outcomes with a correlation value of 0.730.
Length-Weight Relationship and Condition Factors of Tenualosailisha During Spawning Season in Labuhanbatu Estuary Ariani, Fristi; Machrizal, Rusdi; Harahap, Ilham Hakiki
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2025): March
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i1.14718

Abstract

The main objective of the study on Tenualosa ilisha was to analyze the length-weight relationship and condition factors of this species during the peak spawning period in the Bilah Rivers, located in Labuhanbatu Regency, North Sumatra. The study was conducted during the peak spawning period of Tenualosa ilisha, which was recorded to occur from February to April at two main sites Bilah River. The study used exploratory methods, which involved visual and physical observations of fish and their environment. The analysis conducted was the biological aspects of the fish length-weight relationship using the linear allometric model (LAM), while the ecological aspects measured were condition factors using the K Fulton equation and the relative weight equation (Wr). The results of the study the coefficient value (b) was determined to be 1.3181 for males and 1.4617 for females, the value of the condition factor for males (K) was 1.372, and for females (K) 1.474, the value of the relative weight (Wr) for males 100.128 and females 1.474 indicates that the growth of fish length is faster than the weight of fish. Analysis of the condition factor shows that the river environment is still in good condition to support the life of Tenualosa ilisha.
Kepadatan Mikroalga Mixculture Pada Media POME Skala Laboratorium Aulia Juanda Djaingsastro; Saroha Manurung; Maisarah; Rahmad Dian; Rusdi Machrizal
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 4 (2025): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i4.18891

Abstract

This study aims to analyse the density of microalgae mixculture cultivated in POME media with varying concentrations and to evaluate the effect of POME concentration on microalgae growth. Microalgae mixculture was cultivated in POME media with three concentration variations, namely 10%, 20%, and 30%. Cultivation was carried out for 15 days with cell density observations every three days using a haemocytometer. The results showed that microalgae density increased over time in all treatments. A POME concentration of 30% produced the highest microalgae density at each observation time, with a maximum density of 12,564 cells/ml on the 15th day, followed by concentrations of 20% and 10% at 11,980 cells/ml and 10,080 cells/ml, respectively. These results indicate that an increase in POME concentration has a positive effect on the growth of microalgae mixculture within the concentration range used. Microalgae density increased with cultivation time in all treatments. A 30% POME concentration resulted in the highest microalgae density, indicating that the higher nutrient availability in POME supports microalgae growth. Thus, POME has the potential to be utilised as an alternative medium for microalgae cultivation as well as an effort to manage palm oil industry wastewater.
Analysis of Water Quality at The Peak of Spawning Season Tenualosa ilisha at The Downstream of Bilah River Leni Indah Sari; Rusdi Machrizal; Ilham Hakiki Harahap
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 1: Jurnal Pembelajaran Dan Biologi Nukleus March 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i1.6380

Abstract

Water quality analysis plays an important role in understanding the environmental factors that affect aquatic life, especially during critical periods such as fish spawning. The purpose of this study was to investigate several aspects related to water quality and its impact on hilsa fish species during their life cycle period. The study was conducted in Sungai Bilah over a four-month period in 2023, focusing on three specialized stations to assess water quality during the peak season of hilsa fish spawning. This study uses the descriptive method, with strategic sampling locations determined through interviews with fishermen. This method is crucial for understanding the impact of water quality on fish spawning activities. The results of the water quality analysis showed that each station had an average value of Temperature 26.625 °C, Turbidity 86.033, Total Suspended Solid (TSS) 88.75, Dissolved Oxygen (DO) 6.75, Nitrate 2.50, and Phosphate 0.002. Overall, these results indicate that the water quality in the observation area is in a condition that supports the successful spawning of hilsa fish, with stable temperature and adequate dissolved oxygen levels, while other parameters such as turbidity and TSS remain within acceptable limits
Co-Authors Aini Qomariah Manurung Anggreini, Nisah Ariani, Fristi Arman Harahap Asmita, Manja Asri Asyhari Aulia Juanda Djaingsastro Awendi, Aweng Bagus Andriansah Dea Andini Dewi Suci Lestari Diana Khairiyah Sirait Dimenta, Rivo Hasper Elpiyani Elpiyani Erni Jumilawaty Harahap, Ilham Hakiki Hasmi Syahputra Harahap Hasmi Syahputra Harahap, Hasmi Syahputra Hesti Wahyuningsih Ihsan, Mahya Ilham Hakiki Harahap Jahrina Jahrina Juliana Nasution Junita, Rizka Karunia Safitri Khairul Khairul Khairul Khairul Khairul Khairul Khairul Khairul Khairul Khairul Khairul Khairul Khairul Khairul Khairul, Khairul Khairunnisa Dalimunthe Leni Indah Sari Maisarah Manurung, Saroha Maryani, Sri Maslimah Hasibuan Nur Asia Nasution Nuratika Ranza Rahmad Dian Riska Agustina Rivo H. Dimenta Rosmidah Hasibuan Ruri Rimenta Ximenez Diaz Sayyidah Napisah Simanjuntak, Lestari Samantha Sindi Pratiwi Ningsih Sinta Nuria Munthe Sirait, Diana Khairiyah Siregar, Zunaidy Abdullah Sitepu, Puja Arafah Siti Fatimah Siregar Sri Maryani Suprida Yani Nasution Syafruddin Nasution Wahyungsih, Hesti Yuliarni Yuliarni Yuliarni Yuliarni