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All Journal Jurnal Harpodon Borneo Jurnal Ilmiah Ilmu Terapan Universitas Jambi Jurnal Indonesia Sosial Sains Jurnal MAIYAH
Oktavia, Sella
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The Existence of Customary Law in Managing Fishery Resources in Indonesia Radityani, Fitri; Utami, Aulia Rahmi; Oktavia, Sella; Wati, Kiran Lavanya; Muzahidi, Muzi; Nurasiyah, Siti
MAIYAH Vol 3 No 1 (2024): Maiyah : Vol. 3 No. 1 Maret 2024
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.maiyah.2024.3.1.11529

Abstract

The diversity of cultures and customary laws in Indonesia is reflected in the management of fisheries resources. This article explores various customary laws that are still valid in several regions in Indonesia, such as Sasi customary law in Maluku, Laot customary law and the Panglima laot institution in Aceh, Awig-awig customary law in Lombok, Masa ombo customary law in Central Sulawesi, customary law Lubuk ban in Jambi, Lilifuk customary law in NTT, and the Bapongka cultural system in the Bajo tribe. Through descriptive and qualitative research, this article highlights the implementation, changes and challenges faced by customary law in the face of modernization and globalization. It was found that this customary law not only functions to manage fisheries resources sustainably, but also plays an important role in maintaining local wisdom, traditional values, and the welfare of local communities. This research emphasizes the importance of understanding and respecting customary law in efforts to preserve natural resources and local culture in Indonesia.
ANALYSIS OF Pseudomonas aeruginosa AND Bacillus subtilis BACTERIA GROWTH IN KNO3 FERTILIZER MEDIA AS NITROGEN BIOREMEDIATION AGENT Hasanah, Afifah Nurazizatul; Radityani, Fitri Afina; Nuryadin, Devi Faustine Elvina; Sipahutar, Yesika; Nadia, Putri; Gracia, Jeaneatte; Oktavia, Sella
Jurnal Harpodon Borneo VOLUME 16 NO.2 OKTOBER 2023
Publisher : Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/harpodon.v16i2.4230

Abstract

Increased population growth is the main cause of increased waste in the environment, especially in water. Increased population growth is the main cause of increased waste in the environment, especially in water. Ammonia, nitrite, and nitrate are forms of inorganic nitrogen, which if they exceed water quality standards, can pollute the environment and are toxic to aquatic biota. However, the toxicity of nitrogen compounds in water can be controlled by microorganisms through nitrification and denitrification processes. In this study, two types of bacteria were used as biological agents in the bioremediation process, Pseudomonas aeruginosa and Bacillus subtilis, which grown anaerobically in media that has been added by KNO3 as a pollutant for 8 days. The results obtained showed that B. subtilis survived for 7 days before entering the cell death phase on the 8th day, while Pseudomonas aeruginosa survived for 5 days and entered the cell death phase on the 6th day. Meanwhile, based on its ability to reduce nitrate, B. subtilis can reduce it up to 99.42%, while P. aeruginosa can reduce it up to 98.26% in 8 days.
HONEY PUMPKIN STEM BORER, Apomecyna saltator FABRICIUS (COLEOPTERA: CERAMBYCIDAE) CAN BE CONTROLLED WITH PHOSPHORUS AND POTASSIUM FERTILIZER Wilyus, Wilyus; Nurdiansyah, Fuad; Irianto, Irianto; Asniwita, Asniwita; Oktavia, Sella
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 8 No. 2 (2024): Volume 8, Nomor 2, December 2024
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v8i2.33717

Abstract

Apomecyna saltator, a notorious pest of honey pumpkin plants, poses a significant threat to both vegetative and generative phases, leading to considerable production losses. Despite its agricultural impact, there are limited studies on effective management strategies for this pest. This research investigates the effect of combined phosphorus and potassium fertilization on controlling A. saltator infestations in honey pumpkin plants. The study was conducted at the Teaching and Research Farm of the Faculty of Agriculture, Jambi University. A randomized block design with five treatments and five replications was used, testing different combinations of SP-36 phosphorus and potassium chloride (KCl) fertilizers: no fertilization (p0), SP-36 0.67 g/plant + KCl 1.25 g/plant (p1), SP-36 1.00 g/plant + KCl 1.88 g/plant (p2), SP-36 1.34 g/plant + KCl 2.51 g/plant (p3), and SP-36 1.67 g/plant + KCl 3.13 g/plant (p4). The variables observed included stem diameter, larval population, percentage of plant damage, number of attacked plant segments, fruit weight, and overall production. Data were analyzed using ANOVA and Duncan's Multiple Range Test (DMRT). The results indicated that combining phosphorus and potassium fertilizers significantly increased stem diameter, fruit weight, and yield while reducing larval populations, plant damage, and affected segments. The study demonstrates that phosphorus and potassium strengthen honey pumpkin plants and negatively impact A. saltator infestations. This research highlights a novel approach to pest control, showing that targeted fertilization promotes plant health and suppresses the honey pumpkin stem borer (A. saltator). This dual benefit of nutrient application provides a sustainable and efficient pest management strategy, offering a fresh perspective on integrated crop protection.
Dinamika Ekosistem Mangrove di Desa Banten, Kecamatan Kasemen Kota Serang, Banten : Pendekatan Spasial dan Ekologis Rahmatuzzakia, Rahmatuzzakia; Oktavia, Sella; Ismail, Muhammad Halim; Sa’adah, Feni Ulfa; Wati, Kiran Lavanya; Sephiana, Lidya; Oktaviani, Lusi; Muzahidi, Muzi; Gumelar, Pandu Guruh; Nurasiyah, Siti; Munandar, Erik; Khalifa, Muta Ali
MAIYAH Vol 4 No 1 (2025): Maiyah : Vol. 4 No. 1 Maret 2025
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.maiyah.2025.4.1.14306

Abstract

Ekosistem mangrove memiliki peran penting dalam melindungi wilayah pesisir, menjaga keanekaragaman hayati, serta menyediakan jasa lingkungan dan ekonomi bagi masyarakat. Penelitian ini bertujuan untuk menganalisis perubahan luasan dan struktur vegetasi mangrove di kawasan Kecamatan Kasemen, Kota Serang, dan mengidentifikasi faktor-faktor yang memengaruhi dinamika ekosistemnya. Penelitian dilakukan pada Oktober 2024 menggunakan pendekatan deskriptif melalui analisis spasial, observasi lapangan, dan wawancara. Perubahan luasan mangrove dianalisis melalui digitasi citra satelit dari tahun 2005 hingga 2023 menggunakan perangkat pemetaan. Struktur vegetasi diamati menggunakan aplikasi berbasis digital untuk mencatat tinggi pohon, diameter batang, jenis mangrove, dan penutupan kanopi. Wawancara semi-terstruktur dilakukan untuk memperoleh informasi mengenai kegiatan rehabilitasi dan kondisi lingkungan dari masyarakat sekitar. Hasil menunjukkan peningkatan luasan mangrove dari 11.294 m² pada tahun 2009 menjadi 65.493 m² pada tahun 2023, dipengaruhi oleh penanaman, regulasi daerah, dan keterlibatan komunitas. Struktur vegetasi didominasi oleh Avicennia marina dengan nilai penting tertinggi 232,51. Nilai kesehatan vegetasi bervariasi, dengan angka tertinggi sebesar 62,72% dan terendah 43,84%. Keberadaan fauna khas mangrove seperti kepiting bakau, ikan gelodok, dan siput mengindikasikan peran ekologis mangrove sebagai habitat utama. Penelitian ini menekankan pentingnya penggabungan analisis spasial dan pemantauan ekologi untuk mendukung pengelolaan mangrove secara berkelanjutan.
The Effect of Capital Structure, Profitability, and Liquidity on Company Value with Company Size as A Moderation Variable Oktavia, Sella; Ramadhan, Yanuar
Jurnal Indonesia Sosial Sains Vol. 5 No. 03 (2024): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v5i03.1011

Abstract

This research aims to test whether the structure of capital, profitability, and liquidity affects the value of the company and whether by adding moderation variables the size of the company can strengthen or weaken independent variables against dependent variables.  It is known that the impact of the COVID-19 virus made some banks suffer losses, and others experienced a decrease in profits that lowered the value of the company, one of which is the banking sector. The population used in this study is financial industry companies, namely banking and components which amounted to 34 companies in the period 2020.  The analysis method used in this study uses a multiple linear regression method consisting of independent variables of capital structure, profitability, company size, and moderation variables namely company size, as well as dependent variables i.e. company values.  Based on the results of the F test it was obtained that all independent variables significantly affect dependent variables. Partially, the results that profitability variables have a significant effect on the value of the company, the size of the company strengthens the influence of profitability on the value of the company, and partially also obtained the result that the variables of capital structure, and liquidity do not significantly affect the value of the company, the size of the company weakens the influence of the capital structure, and liquidity on the value of the company. The purpose of the study is to identify and analyze the effect of three main factors, namely capital structure, profitability, and liquidity, on the value of the company.
Co-Authors Asniwita Asniwita Fuad Nurdiansyah Gracia, Jeaneatte Gumelar, Pandu Guruh Hasanah, Afifah Nurazizatul Irianto Irianto Ismail, Muhammad Halim Khalifa, Muta Ali Lusi Oktaviani Munandar, Erik Muzahidi, Muzi Nadia, Putri Nuryadin, Devi Faustine Elvina Radityani, Fitri Radityani, Fitri Afina Rahmatuzzakia, Rahmatuzzakia Ramadhan, Yanuar Sa’adah, Feni Ulfa Sephiana, Lidya Sipahutar, Yesika Siti Nurasiyah, Siti Utami, Aulia Rahmi Wati, Kiran Lavanya Wilyus Wilyus