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All Journal Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Biosfer: Jurnal Tadris Biologi CHEESA: Chemical Engineering Research Articles Jurnal Biosilampari: Jurnal Biologi Jurnal Eduscience (JES) Jurnal Pembelajaran dan Biologi Nukleus JPP (Jurnal Pendidikan dan Pembelajaran) UTAMAX : Journal of Ultimate Research and Trends in Education Bioscientist : Jurnal Ilmiah Biologi Journal of Environmental and Development Studies
Rusdi Machrizal
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Social Sciences Other

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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.
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.
Analysis of Water Quality at The Peak of Spawning Season Tenualosa ilisha at The Downstream of Bilah River Sari, Leni Indah; Machrizal, Rusdi; Harahap, Ilham Hakiki
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
The Population Dynamics of Belanger's Croaker (Johnius belangerii) at Barumun River, Panai Hilir District, Labuhanbatu Regency Maryani, Sri; Machrizal, Rusdi
Biosfer: Jurnal Tadris Biologi Vol 13 No 1 (2022): Biosfer: Jurnal Tadris Biologi
Publisher : UNIVERSITAS ISLAM NEGERI RADEN INTAN LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/biosfer.v13i1.11468

Abstract

This study aims to determine the population dynamics of J. belangerii fish in the waters of the Barumun River, Labuhanbatu Regency. Sampling was carried out for 3 months, starting in October – December 2021. The results showed the relationship between length and weight of J. belangerii fish was negative allometric with a b value of 0.713 (b<3). The population of J. belangerii was dominated by individual lengths between 14.5 - 38 cm with a body weight range of 30-80 grams. The length of the totic acid (L∞) is 41.55 cm with a growth coefficient (K) of 0.430 per year. Natural mortality (M) and fishing mortality (F) were 0.937 and 0.892 per year, respectively. The level of exploitation (E) obtained a value of 0.35 . The condition of the population of J. belangerii based on the value of (F),(N),(E) is not in a state of over-exploitation.ABSTRAK: Penelitian ini bertujuan untuk mengetahui dinamika populasi ikan J. belangerii yang ada di Perairan Sungai Barumun Kabupaten Labuhanbatu. Pengambilan sampel dilakukan selama 3 bulan, di mulai pada Oktober – Desember 2021. Hasil penelitian menunjukkan hubungan Panjang berat ikan J. belangerii adalah alometrik negatif dengan nilai b 0,713 (b<3). Populasi ikan J. belangerii didominasi ukuran panjang individu antara 14,5 - 38 cm dengan kisaran berat tubuh 30-80 gram. Panjang asim totik (L∞) adalah 41,55 cm dengan koefisien pertumbuhan (K) adalah 0,430 pertahun. Mortalitas alami (M) dan mortalitas penangkapan (F) masing-masing sebesar 0,937 dan 0,892 per tahun. Tingkat eksploitasi (E) diperoleh nilai 0,35 . Kondisi populasi J. belangerii berdasarkan nilai (F),(N),(E) tidak dalam keadaan over exploitasi.
POLA PERTUMBUHAN DAN FAKTOR KONDISI IKAN LELE PANJANG (Clarias leiacanthus ) DI AEK SILOM-LOM, LABUHANBATU Awendi, Aweng; Machrizal, Rusdi
Jurnal Biosilampari : Jurnal Biologi Vol 5 No 2 (2023): Biosilampari
Publisher : LP4MK STKIP PGRI Lubuklinggau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31540/biosilampari.v5i2.2121

Abstract

This study was aimed at analyzing the growth patterns of catfish (Clarias leiacanthus) through the analysis of length weight relationships. The Condition Factor is calculated to determine the habitat conditions of the C. leiacanthus fish population. The research was carried out from October to December 2021 in the Aek Silom-lom River, South Labuhanbatu Regency. Measurement of fish length and weight and identification were carried out at the Ecology Laboratory, Faculty of Teacher Training and Education, Labuhanbatu University. Samples were captured using fishing gear in the form of fishing rods. Growth pattern analysis refers to the Linear Allometric Model (MAL), the condition factor is calculated based on relative weight (Wr) and Fulton (K). The catch during the study was 54 catfish (C. leiacanthus) obtained from Aek Silom-lom. The results of measurements against the sample obtained that the total length range (TL) is 20-31 cm, and weight (W) 81-180 grams. Analysis of the linear allometric model explained that the growth pattern of catfish (C. leiacanthus) is negative allometric b=2.22 (b<3). The results of the condition factor analysis obtained a relative range (Wr) of 81.047 – 124.552 with an average of 88.01. Factor Analysis of Fulton's condition (K) found a K value of 0.84. Based on the value of the Fulton condition factor (K) it can be concluded that the waters of Aek Silom-lom are in a balanced state, and can support the life of long catfish (C. leiacanthus).
Pengaruh Kecanduan Game Online terhadap Motivasi Belajar Siswa di SMP PKMI Methodist Aek Batu Simanjuntak, Lestari Samantha; Siregar, Zunaidy Abdullah; Machrizal, Rusdi
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 3 (2025): September
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.v13i3.16967

Abstract

This study aims to analyse the effect of online game addiction on students' learning motivation at SMP PKMI Methodist Aek Batu. This research uses a quantitative approach with survey method. The population consisted of 64 students, and the total sampling technique was used to determine the sample. The research instrument is a questionnaire that has been tested for validity and reliability. Data analysis was performed using Pearson's correlation test with IBM SPSS Statistics 23. The results of the study showed that there was no significant effect of online game addiction on student learning motivation, as evidenced by the correlation test results showing a significance value greater than 0.05 (> 0.05). This discrepancy in results may be influenced by factors such as time management, parental support, type of game, and the students' social environment. Therefore, it can be concluded that online gaming addiction does not directly affect students' learning motivation at SMP PKMI Methodist Aek Batu. Further research with a broader scope, larger sample size, and a mixed quantitative and qualitative approach is recommended to obtain more comprehensive results.
HUBUNGAN KEPADATAN KIJING (Glauconome virens) DENGAN FAKTOR FISIK KIMIA PERAIRAN DI EKOSISTEM MANGROVE BELAWAN Machrizal, Rusdi
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 3, No 2: Jurnal Pembelajaran Dan Biologi Nukleus Agustus 2017
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v3i2.1119

Abstract

Penelitian ini bertujuan untuk mengetahui hubungan antara faktor fisik kimia perairan dengan kepadatan populasi kijing (Glauconome virens) di ekosistem mangrove Belawan pada Maret-Mei 2017. Pengambilan sampel kerang dilakukan pada 3 stasiun dengan metode transek garis dengan panjang 30 meter dan interval 10 m, setiap transek terdapat 15 plot berukuran 1 x 1 meter dengan pengulangan sebanyak 3 kali. Hasil penelitian menunjukkan kelimpahan kijing sebesar 2,77 (stasiun 1), 1,19 (stasiun 2), dan 2,96 individu/m2(stasiun 3). Hasil pengukuran terkait faktor fisika kimia perairan diperoleh suhu berkisar antara 27,8-28,5oC, salinitas 5-20
MORFOMETRIK DAN POLA PERTUMBUHAN KIJING (Glauconome virens, LINNAEUS, 1767) DI EKOSISTEM MANGROVE BELAWAN Machrizal, Rusdi
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 3, No 1: Jurnal Pembelajaran Dan Biologi Nukleus Februari 2017
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v3i1.1196

Abstract

Penelitian ini bertujuan untuk mendapatkan dan menganalisis data morfologi dan pola pertumbuhan kijing (Glauconome virens). Penelitian berlangsung pada bulan Januari sampai Maret 2014 di ekosistem mangrove Belawan. Sampel dikumpulkan dengan membuat transek kuadrat berukuran 1 x 1 m2 sebanyak 45 buah dengan jarak 1 m. Hasil penelitian menunjukkan adanya hubungan linier positif antara panjang dengan lebar, panjang dengan tebal, serta lebar dengan tebal. Hasil analisis panjang berat menunjukkan bahwa kijing memiliki pola pertumbuhan allometrik negatif
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.
Co-Authors Anggreini, Nisah Ariani, Fristi Asmita, Manja Awendi, Aweng Dea Andini Dimenta, Rivo Hasper Erni Jumilawaty Harahap, Ilham Hakiki Hasmi Syahputra Harahap, Hasmi Syahputra Hesti Wahyuningsih Junita, Rizka Khairul Khairul Khairul, Khairul Maryani, Sri Sari, Leni Indah Simanjuntak, Lestari Samantha Sirait, Diana Khairiyah Siregar, Zunaidy Abdullah Sitepu, Puja Arafah Syafruddin Nasution Wahyungsih, Hesti Yuliarni Yuliarni