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Bioscientist : Jurnal Ilmiah Biologi
Published by Universitas Pendidikan Mandalika
ISSN : 23385006     EISSN : 26544571     DOI : https://doi.org/10.33394
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences
Bioscientist : Jurnal Ilmiah Biologi (BJIB), receiving and publishing article in the form of research (scientific article) in the field of biology education and utilization of biological research in learning. Moreover, this journal bridges the gap between research and practice, providing information, ideas and opinion, in addition to critical examinations of biology research and teaching. Through the coverage of policy and curriculum developments, the latest results of research into the teaching, learning and assessment of biology are brought to the fore. Special emphasize are as follow: 1. Research on Learning Biology (Biology Learning Materials at All Education Levels). 2. Pure Research of Biology Developed or Studied to the Sources, Materials, or Instructional Media Biology (Biology Learning Materials at All Education Levels and Application in Society). 3. Curriculum of Biology Education at all Education Levels. 4. Class Action Research (CAR) and Lesson Study in Biology. 5. Other Qualitative Research of Biology Education. 6. The School Management and Biology/Science Laboratory Management. 7. Biology Learning Evaluation. 8. Teacher Professional Issues/Trends in Biology Education. 9. Another Study for the Scope of Biology Education. 10. Research on Environmental Education.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 28 Documents
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Search results for , issue "Vol 9, No 1 (2021): June" : 28 Documents clear
Pengaruh Problem Based Writing with Peer Review (PW-PR) terhadap Kemampuan Berpikir Kritis Siswa pada Konsep Pencemaran Lingkungan Zulhia Usna Prihatin; I Wayan Karmana; Titi Laily Hajiriah
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3746

Abstract

The purpose of this study was to determine how the effect of Problem Based Writing with Peer Review (PW-PR) on students' critical thinking skills. This type of research is quasi-experimental. The population in this study were students of class X SMAN 1 Praya Timur, Central Lombok Regency, with a total of 24 students. Sampling was done by purposive sampling, ie classes were taken based on a specific purpose. The data analysis technique used is the N-Gain index formula. Based on the results of the pretest and posttest data analysis showed that, there was a significant increase from the N-Gain index of 0.36 to the N-Gain index of 0.44. The standard N-Gain index is 0.7 smaller than the research N-Gain index (0.7 < 0.44). Because the N-Gain index of the research results is smaller than the standard N-Gain index and the results are positive so that it is categorized as moderate, it can be concluded that there is an effect of Problem Based Writing with Peer Review (PW-PR) on students' critical thinking skills.
Validitas Lembar Kerja Siswa (LKS) Biologi Berbasis Pembelajaran Guided Inquiry Nofayukisari Nofayukisari; Baiq Muli Harisanti; Ida Royani
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3760

Abstract

The existing worksheets (LKS) are generally less attractive, the images in the worksheets are less clear and colorless, no source of images are listed, the worksheets have not used a complete LKS format, such as instructions for using good worksheets for teachers as well as the students and the student worksheets used were not arranged neatly and systematically. The use of learning methods that are not quite right. Therefore it is necessary to have teaching materials related to the 2013 curriculum, one of which is teaching materials that have the guided inquiry learning method. It was drafted a student worksheet based on guided inquiry learning. This study validates the guided inquiry learning based biology student worksheet on the material of life organization systems. This study aims to determine the validity of biology student worksheets based on guided inquiry learning. The method used in this research is development (Research and Development). The design of development research is carried out through several stages that have been modified according to the needs of the researcher, namely: the definition stage (Define), the design stage (Design), and the development stage (Develop). At the defining stage, conducting a needs analysis, the design stage carried out the preparation of worksheets, and the development stage carried out expert validation. The instrument used in this study was a validation sheet. The data collection technique in this research is validation. The data analysis technique in this research is descriptive qualitative. The results showed that the validity of biology student worksheets based on guided inquiry learning was valid. The resulting worksheets are feasible for use with a validity level of 2.96. Thus, It can be concluded that the student worksheet is valid and suitable for use as teaching material.
Estimasi Simpanan Karbon dan Status Kesehatan Padang Lamun di Pulau Kelapa Kabupaten Bima Isnaini Marliana; Hilman Ahyadi; Dining Aidil Candri; Immy Suci Rohyani; Sukmaraharja Aulia Rachman Tarigan; Pardede Shinta Trilestari; Sebastian Aviandhika; Sri Puji Astuti
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3542

Abstract

The seagrass community are angiosperm plant communities that mostly grow in shallow marine waters. The community has an ecological role and function, both as a habitat for various types of biota and as a carbon sink. The purpose of this study was to determine the type and condition of the seagrass ecosystem in Kelapa Island based on the percentage of cover; and to determine the estimated carbon stocks of seagrasses contained. Seagrass community data collection was carried out in September-October 2020 in the waters of Kelapa Island, Bima Regency, West Nusa Tenggara Province. A quadratic transect was used for data collection of seagrass cover, and analysis of seagrass community cover using the PhotoQuad application, followed by determining the condition of the seagrass community ecosystem, and analysis of estimated carbon storage using the Loss On Ignition (LOI) method. The results showed that there were 4 types of seagrass found, consisting of: Thalassia hemprichii, Halophila ovalis, Cymodocea rotundata, and Halodule pinifolia. The percentage of seagrass cover is 52.31%, because it is less than 60%, the health status of seagrass beds is unhealthy based on the Decree of the Minister of the Environment Number 200 of 2004. Total carbon storage is 16.1 gr.Cm-2. Thalassia hemprichii as the highest carbon storage species was 8.27 gr.Cm-2.
Populasi Kepiting Bakau (Scylla serrata) di Perairan Muara Sungai Barumun Kabupaten Labuhanbatu Ditinjau dari Pola Pertumbuhan dan Faktor Kondisi Indah Pratiwi; Rivo Hasper Dimenta
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3749

Abstract

Mangrove crab (Scylla serrata) is one of the prima donna sources of protein caught by fishermen around mangrove forest waters in the waters of the Barumun River Estuary, Labuhanbatu Regency. This study aims to inform about condition factors, growth patterns of crab populations, and reproductive aspects in the form of abundance of Gonad Maturity Level (TKG). Determination of 3 sampling points is done by using purposive random sampling method. Scylla serrata sampling was carried out using Bubu. Data analysis presents information on the abundance of gonadal maturity level, growth pattern, and Fulton condition factor (K), which is presented quantitatively. The results showed that male and female Scylla serrata growth patterns were categorized as negative allometric b < 3, with carapace width growth being faster than weight gain. Fulton condition factor (K) values obtained ranged from 50.14-132.75 for male Scylla serrata, and female ranged from 80.34-123.94. The gonadal maturity level of Scylla serrata was dominated by TKG II crabs, and the lowest abundance of gonad maturity was in TKG IV crabs. This indicates that, in December-February, the condition of the Scylla serrata population around the mangrove forest waters of the Barumun river estuary, is predicted to be in the stage of adult dominance that is ready to reproduce and prepare to spawn.
Induksi Keragaman Genetik pada Tanaman Alocasia Menggunakan Mutagen Kimia Kolkisin Fitri Damayanti; Zakiah Fithah A’ini
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3753

Abstract

Alocasia green velvet (neon taro) is one of the ornamental plants that plant lovers hunt. The increasing standard of living and interest in beauty and uniqueness, the demand for this plant has increased. This provides an opportunity for ornamental plant farmers to develop the potential of Alocasia. Genetic diversity in Alocasia is very low because generally these plants are propagated such as vegetative. Therefore, it is necessary to increase genetic diversity so that new types of Alocasia are produced with more attractive leaf shapes, sizes, and coloration. Efforts that can be applied are mutation induction using a chemical mutagen, namely colchicine. The plant material was used that the tuber of the Alocasia plant. The study was conducted using a randomized block design with two factors, the colchicine concentration (0, 10, 15, 20, 25, and 30 mgL-1) and the immersion time (1 and 2 days). The 30 mgL-1 colchicine treatment gave better growth: producing the highest number of leaves, the longest root length, the highest number of shoots and the percentage of sprouting tubers that reached 100%. Colchicine treatment of 10 mgL-1 with immersion time of 1 day resulted in a different leaf shape. Colchicine treatments of 10, 15, 20, and 25 mgL-1 produced plants with younger leaf coloration than the control.  As well as the 30 mgL-1 colchicine treatment produced vigorous plants with larger stem sizes.
Survey Etnobotani Tumbuhan Obat pada Masyarakat Dayak Salako di Sekitar Cagar Alam Raya Pasi Provinsi Kalimantan Barat Irwan Lovadi; Yoga Budihandoko; Niken Wuri Handayani; Dian Setyaningsih; Icuk Setiawan
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3584

Abstract

The use of plants in traditional medicine has been carried out by indigenous people around the forest on the island of Kalimantan. However, knowledge about the use of plants in traditional medicine by the Salako Dayak community who inhabit the buffer zone of the Raya Pasi Nature Reserve, West Kalimantan Province, has never been documented. This study aims to collect scientific information regarding the use of plants in traditional medicine by the Salako Dayak community in West Kalimantan Province. The research was conducted by conducting semi-structured interviews, and continued with a discussion of 18 respondents who were determined by purposive sampling. The data collected includes: the name of the plant, the part used, the disease/efficacy (medical) of each plant, the method of preparation of medicinal plants, and the dosage/dose rules. In addition, the frequency of citations/mentions (%) of each medicinal plant and the Informant Agreement Factor were also calculated. The results showed that the Salako Dayak community used 85 species of plants in traditional medicine. Piperaceae, Fabaceae, Rubiaceae, and Lamiaceae were the dominant plant families reported by respondents as medicinal plants. In general, the Salako Dayak community mostly uses the roots to be used as medicine, with the method of preparation by boiling or soaking. Callicarpa longifolia is the plant with the highest frequency of citations, and is commonly used to treat: internal fever, ulcers, wounds, abdominal pain, and postpartum medicine at a dose of 3 x 1. In addition, this study also obtained the number of taxa used by the Dayak community. Salako is more diverse in several categories of traditional medicine.
Profil Keterampilan Penyelesaian Masalah Siswa melalui Penerapan Model Pembelajaran Problem Based Learning Ditinjau dari Perbedaan Gender Yunita Roslina Ngongo; Ismail Efendi
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3836

Abstract

The purpose of this research is to describe the profile of students' problem solving skills through the application of problem based learning models in terms of gender differences. This type of research is descriptive qualitative research. The research population was seventh grade students of SMPN 3 Lingsar, West Lombok Regency. The research was conducted in March-May 2020. The research instrument used was a problem-solving skill test. The data collection technique used a test in the form of description questions. The data analysis technique used descriptive statistics. The results showed that the average mastery result of female students increased by 55.7, and the average mastery indicator of male students increased by 48.1. This shows that the problem solving skills of female students are greater than that of male students. The average score for male students is 0.99, in the high category, and the average score for female students is 0.93, in the high category. This shows that there are differences in problem solving skills between male and female students. The conclusion in this study is that the problem solving skills of female students are higher than that of male students.
Serapan Karbon Hutan Mangrove di Bagek Kembar Kecamatan Sekotong Kabupaten Lombok Barat Baiq Farista; Arben Virgota
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3777

Abstract

The environmental services of mangrove forests as carbon sinks are one of the indirect benefits of the mangrove ecosystem. The absorption of carbon is carried out by mangrove vegetation through the process of photosynthesis. In this study, mangrove environmental services as carbon sinks are based on the ability to absorb CO2 expressed in carbon units (tC, tCO2), and the economic value of carbon storage in monetary units (Rp). This research was conducted in the Bagek Kembar Mangrove Ecotourism Area, Sekotong District, West Lombok Regency. The method used to take samples is stratified random sampling, where the placement of the plots is determined randomly. The observation plots for each type of growth are arranged in stages with different sizes. The plots are 10 m x 10 m for trees, 5 x 5 m for seedlings, and 2 x 2 m for seedlings. Trees are mangroves with trunk diameter > 4 cm, tillers have a stem diameter of 4 cm and, a height of > 1 m, and seedlings are mangroves with a height of < 1 m. This research shows that the mangrove vegetation in the research location has absorbed 6,437.80 tonnes of CO2eq, and a monetary value of Rp. 482.834.700 (four hundred eighty-two million eight hundred and thirty-four thousand and seven hundred rupiahs).
Aktivitas Antibakteri Ekstrak Etanol Daun Kitolod (Isotoma longiflora) terhadap Bakteri Vibrio sp. Penyebab Vibriosis pada Udang Vaname (Litopenaeus vannamei) Sari Hidayati; Salnida Yuniarti Lumbessy; Fariq Azhar
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3557

Abstract

The purpose of this study was to determine the effectiveness of the ethanol extract of kitolod leaves is active against Vibrio sp. that causing vibriosis in vaname shrimp by in vitro method. Kitolod leaf extract was made using maceration method with 96% ethanol as solvent. Kitolod leaf ethanol extract was analyzed by GC-MS. Antibacterial testing using the disk diffusion method used 4 concentration variations, namely: 12.5%, 25%, 50%, and 100% against 3 types of Vibrio sp. bacteria, namely: Vibrio harveyi, Vibrio parahaemolyticus, and Vibrio alginolyticus. The antibiotic rifampicin was used as a positive control, and aquades as a negative control. This study used a factorial Completely Randomized Design (CRD) with 3 replications. The results of characterization and identification by GC-MS showed the presence of an active compound of phthalic acid in the ethanol extract of kitolod leaves. Kitolod leaf extract 25%, 50%, and 100% had the same ability to inhibit the growth of Vibrio alginolyticus. Kitolod leaf extract 50% and 100% had the same ability to inhibit Vibrio harveyi and kitolod leaf extract 100% had a better ability to inhibit the growth of Vibrio parahaemolyticus.
Respon Pertumbuhan Hipokotil Kurma (Phoenix dactylifera L.) cv. Barari Madu pada Beberapa Konsentrasi Zat Pengatur Tumbuh secara In Vitro Novita Hidayatun Nufus; Aluh Nikmatullah; Muhammad Sarjan
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): 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/bjib.v9i1.3828

Abstract

This study aims to determine the growth response of the hypocotyl date palm (Phoenix dactylifera L.) cv. Barari on several types and concentrations of Growth Regulators (PGR) in vitro. The research was carried out by planting 30-day-old hypocotyl dates on Murashige Skoog (MS) media by giving several concentrations of ZPT Naphthalene Acetic Acid (NAA) and Benzyl Amino Purine (BAP). The treatment given is; P0 (Media MS0, without the addition of PGR), P1 (Media MS+1 ppm NAA+1 ppm BAP), P2 (Media MS+2 ppm NAA+1 ppm BAP), and P3 (Media MS+3 ppm NAA+1 ppm BAP). Each treatment consisted of 20 explants with 3 replications. The parameters observed were: 1) the first time shoots/roots appeared; 2) percentage of explants forming roots; 3) percentage of explants forming shoots; and 4) the color of the explants in each treatment after 30 days. Observational data were analyzed descriptively. The results showed that the hypocotyl response of the Barari cultivar planted in treatments P1, P2, and P3 showed cell enlargement and elongation, in contrast to explants in treatment P0 which did not show any growth response. In treatments P1 and P2, cell elongation occurred until the 10th day followed by root formation on the 15th day after planting. The percentage of explants that formed roots at P1 and P2 were 21.67% and 16.67%, respectively. In the P3 treatment, the explants only experienced cell enlargement and elongation without the formation of shoots or roots. The color of the explants on P0 treatment was slightly brown green with black tips after 30 DAP. Explants planted at P1, P2, and P3 formed shoots or shoots+roots, the hypocotyl area remained green, shoots were greenish-white, and roots were white.

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