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Pinta Omas Pasaribu
Universitas Negeri Jakarta
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Journal : Jurnal Biologi Tropis

 1 
The Inventory of Macroalgae in The Rengge Beach, Pari Island, Thousand Islands, Jakarta Pinta Omas Pasaribu; Rizal Koen Asharo; Nailul Rahmi Aulya; Novia Lis Cahyati; Nurul Assyifa Wardana; Ade La Yusup; Farhana Faridah Achmad
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.6322

Abstract

Pari Island is one of the islands among the Thousand Islands group, about 46.32 km from the center of Jakarta with a total area of 310,000 km2 has high biodiversity, one of which is from the macroalgae group. Although macroalgae are a source of high biodiversity, the utilization of macroalgae is still very minimal to do because of the lack of education in the community about the types and benefits of macroalgae found in waters. This study aims to determine the diversity of macroalgae in Rengge Beach, Pari Island, Kepulauan Seribu, Jakarta so that later the community can find out more information about the types, characteristics, and potential utilization of macroalgae. The research was conducted in December 2022 using the benthic belt transect method with a total of 5 stations, carried out by drawing a line from the shoreline inland with a transect length of 100 m and a width of 10 m (5 m to the right and left sides), a monitoring area of 1 km² (10x100 m) between stations. Samples were taken and identified to the species level at the Plant Structure and Development Laboratory, Biology study program, Jakarta State University, Jakarta. Observations include several characteristics both morphologically and anatomically. The results showed that there were five species of macroalgae that could be identified, namely Halimeda sp, Gracilaria sp, Turbinaria sp, Padina sp, and Sargassum sp, therefore it can be concluded that there are only five genera of macroalgae in this place. This research needs more development that can provide more benefits, one of which is to develop the research area and further identify the types of macroalgae obtained to find out more specific information about the potential of macroalgae.
Effectiveness of Gibberellin Concentration (GA3) for The Growth and Propagation of Plant Cuttings Stevia Rebaudiana Pasaribu, Pinta Omas; Saputro, Sigit; Indrayanti, Reni; Adisayhputra, Adisayhputra
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7605

Abstract

Stevia (Stevia rebaudiana) is a perennial semi-herbaceous plant whose leaves can be used as a sweetener for food and beverages. Stevia sweetener has low calories so its use is not bad for health. Propagation of Stevia by stem cutting using the top is a simple, fast, and easy propagation technique. This study aimed to obtain the optimum concentration of GA3 and the correct propagation method for Stevia cuttings for lowland areas. The research was conducted at the Green House, Biology Study Program FMIPA UNJ. The method used was an experimental method with a completely randomized design, consisting of 3 experiments, namely the provision of GA3 with a dose of 10 ppm, 30 ppm, and 50 ppm. Qualitative data were processed descriptively, quantitative data were analyzed based on ANOVA. The results showed that the use of Gibberellins with a concentration of 10 ppm and the maintenance of Stevia cuttings in clear plastic containers were more effective in the development of an average stem length of 19.18 ± 2.40, a mean plant length of 23.62 ± 2.34 and an average number of roots 14, 33 ± 2.32.
Co-Authors Abdul Hakim Achmad, Farhana Faridah Ade La Yusup Adisayhputra, Adisayhputra Adisyahputra Adisyahputra Adisyahputra Adisyahputra, Adisyahputra Agung Mulya Darmawan Amala, Azizatul Anandhita Arnelya Apriliani, Puput Arief Prasetyo Arman, Zico Asmara, Yustika Tri Aulya, Nailul Rahmi Azizah, Sri Devi Nur Cari, Rimbi Brahma Damayanti, Aldira Putri Elsa Lisanti Fajriah, Winda Nurul Farhana Faridah Achmad Fathulhuda, Nur Wahyu Febrian, Reyno Ahmad Fitriasari, Sheryl Ilahi, Muthiah Rahmah Ivan Hafidhuddin Khairiyyah, Anisah Koen Asharo, Rizal Laksmi Puspitasari M Zaidun Sofyan Maharani, Dewi Mega Putri Nabilah, Saskia Ningrum, Atika Cahya Novia Lis Cahyati NOVITASARI, Ayu Nursahara Pasaribu Nurul Assyifa Wardana Perdani, Nindyra Karimah Putri, Hilda Arsyah Eka Raihan, Eldrian Daffa Reforina, Alika Reni Indrayanti Resti Wahyuni Rizal Koen Asharo Rizal Koen Asharo Rizkawati, Vina Rizky Priambodo Rizky, Muhammad Hafidh Saputri, Rinny Saputro, Sigit Saraswati, Rahadian Ajeng Savira, Ananda Nuri Setyaningsih, Fani Subhi, Fajriana Nurul Tampanguma, Raymond Rayhand Usman Usman Utari, Raysita Vina Rizkawati Wardana, Nurul Assyifa YULIA IRNIDAYANTI