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Biologica Samudra
Published by Universitas Samudra
ISSN : 2715078X     EISSN : 27151174     DOI : -
Core Subject : Health, Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Veterinary
Biologica Samudra adalah jurnal ilmiah dalam bidang biologi yang diterbitkan dua kali dalam setahun (Juni dan Desember) oleh Redaksi Jurnal Biologi, Fakultas Teknik, Universitas Samudra. Biologica Samudra merupakan wadah bagi akademisi maupun praktisi di bidang biologi untuk menyebarluaskan ilmu pengetahuan Biologi ke masyarakat luas sebagai sebuah referensi Biologi. Bidang kajian dalam jurnal Biologica Samudra meliputi berbagai cabang ilmu biologi diantaranya entomologi, taksonomi, mikrobiologi, ekologi, genetika, fisiologi, anatomi, biodiversitas, biologi lingkungan, biologi perairan, biologi medis serta biologi terapan. Naskah yang dipublikasi di Jurnal Biologica Samudra merupakan naskah yang belum pernah diterbitkan dalam jurnal atau jenis penerbitan lainnya.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 36 Documents
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Nitrogen Analysis in Legume and Nonlegume Plants Angelia, Cut Wulan; Maghfirah, Ruhul; Purnama, Agnia; Farida, Mutia; Afifi, Muhammad Ridho; Siregar, Indri Hastuti
JURNAL BIOLOGICA SAMUDRA Vol 7 No 2 (2025): Biologica Samudra
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jbs.v7i2.11715

Abstract

Nitrogen is one of the essential macronutrients required by plants. It can be obtained from both organic and inorganic fertilizers. Naturally, plants acquire nitrogen through the nitrogen-fixation process carried out by Rhizobium bacteria, which occurs exclusively in leguminous plants. This study aims to evaluate the differences in nitrogen content between legume and non-legume plants. The Kjeldahl method was used to measure total nitrogen in peanut (Arachis hypogaea L.), butterfly pea (Clitoria ternatea L.), and maize (Zea mays). The results showed that legume plants—peanut and butterfly pea—contained higher nitrogen levels than the non-legume plant, maize, with values of 6.82%, 5.06%, and 4.42%, respectively. Therefore, it can be concluded that legume plants have a greater capacity for nitrogen uptake due to biological fixation in their root nodules, making them a potential natural nitrogen source for improving soil fertility.
The Effect of Liquid Organic Fertilizer of Stale Rice and Sediment of Catfish Ponds on the Growth of Chili Plants (Capsicum annuum L.) Winandari, Ovi Prasetya; Anisya, Shinta; Marantika, Sapta; Widiani, Nurhaida; Novitasari, Aulia
JURNAL BIOLOGICA SAMUDRA Vol 7 No 2 (2025): Biologica Samudra
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jbs.v7i2.11732

Abstract

riculture in Indonesia produces various types of plants such as staple foods such as rice, corn and vegetables. Vegetables that contain a lot of nutrients include chili plants. The productivity of chili plants in Indonesia is still relatively low, one of the factors is the low soil fertility due to the use of inorganic fertilizers. Therefore, alternative organic fertilizers are made from restaurant/household waste, one of which is rice waste and sediment water from catfish ponds that can be recycled. This study aims to evaluate the impact of using liquid organic fertilizer (LOF) derived from fermented rice and catfish pond sediment on the growth of curly red chili plants (Capsicum annum L.). The research utilized a completely randomized design (CRD) with a factorial model comprising two factors. The first factor was LOF made from fermented rice (Factor M), and the second was LOF from catfish pond sediment (Factor N). Each factor was tested at three treatment levels, resulting in nine treatment combinations. Each combination was replicated three times, along with three replications for a negative control, totaling 30 experimental units. Data analysis was conducted using ANOVA, followed by post-hoc testing with the Least Significant Difference (LSD) method at a 5% significance level. The findings indicated that the optimal results were achieved with the N3M3 treatment combination, which involved a dose of 300 ml of fermented rice LOF and 300 ml of catfish pond sediment LOF per liter of water. This combination yielded the best performance in terms of plant height, leaf count, fresh weight, and dry weight.
The Effect of Different Fat Contents on the Growth of Relo Fish (Rasbora sp.) Amanda, Putri
JURNAL BIOLOGICA SAMUDRA Vol 7 No 2 (2025): Biologica Samudra
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jbs.v7i2.11751

Abstract

Ikan relo (Rasbora sumatrana) merupakan salah satu ikan yang berasal di Danau Laut Tawar. Ikan relo memiliki genus yang sama dengan ikan depik, namun secara genetik berbeda. Tingginya permintaan ikan relo menyebabkan meningkatnya upaya penangkapan terhadap ikan relo. Domestikasi adalah upaya menjinakkan dan mengadaptasikan ikan dari kehidupan liar (habitat asli) ke lingkungan budidaya. Lemak adalah salah satu makronutrien yang dibutuhkan dalam pertumbuhan ikan. Penelitian ini bertujuan untuk menganalisa pakan dengan kadar lemak berbeda terhadap pertumbuhan ikan relo. Penelitian ini dilakukan pada bulan April - Mei 2024. Ikan relo yang digunakan berukuran 3 – 4 cm. Dosis kadar lemak pada penelitian ini yaitu P1 (14%), P2 (16%) dan P3 (18%). Hasil penelitian menunjukkan dosis kadar lemak yang terbaik untuk bobot mutlak yaitu P3 (0,22 g), panjang mutlak yaitu P1 (0,29cm), laju pertumbuhan harian yaitu P3 (0,56%/hari), efesiensi pakan yaitu P3 (51,39), dan untuk kelangsungan hidup berkisar (91,11 – 95,55 %).
The Potential of Edible Fern (Diplazium esculentum (Retz.) Sw.) Leaves Extract as an Oviposition Deterrent against Culex Mosquitoes Halimatussakdiah, Halimatussakdiah; Amna, Ulil; Mardina, Vivi; Misdi, Misdi
JURNAL BIOLOGICA SAMUDRA Vol 7 No 2 (2025): Biologica Samudra
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jbs.v7i2.12576

Abstract

Nyamuk Culex sp. merupakan salah satu vektor penyakit yang berkembang biak dengan meletakkan telur di air tergenang. Salah satu strategi pengendalian populasi nyamuk ini adalah dengan menghambat proses oviposisi menggunakan bahan alami yang ramah lingkungan. Penelitian ini bertujuan mengevaluasi potensi ekstrak metanol daun pakis (Diplazium esculentum (Retz.) Sw.) sebagai agen penghambat peletakan telur (oviposition deterrent) terhadap nyamuk Culex sp. Ekstrak diperoleh melalui metode maserasi dan diuji dalam kandang khusus menggunakan enam cawan uji: satu kontrol negatif (akuades), satu kontrol positif (abate), dan empat perlakuan dengan konsentrasi 250, 500, 1000, dan 2000 ppm. Setelah 48 jam, jumlah telur dihitung dan dianalisis menggunakan persentase efektifitas daya tolak (ER) dan indeks aktivitas oviposisi (OAI). Hasil menunjukkan bahwa pada seluruh konsentrasi, ekstrak menunjukkan aktivitas oviposition deterrent yang sangat kuat, dengan nilai ER sebesar 100% dan OAI -1. Kandungan senyawa bioaktif seperti flavonoid, saponin, dan alkaloid diduga berperan dalam mengganggu reseptor penciuman nyamuk betina. Dengan demikian, D. esculentum berpotensi tinggi sebagai agen pengendali hayati nyamuk Culex sp. yang efektif, selektif, dan ramah lingkungan.
Nest Trees and Habitat Characteristics of the Weaver Ant (Oecophylla smaragdina) within the UIN Ar-Raniry Banda Aceh Campus Emil, Muhammad Farhan Putra; Ahadi, Rizky; Mulyadi, Mulyadi
JURNAL BIOLOGICA SAMUDRA Vol 7 No 2 (2025): Biologica Samudra
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jbs.v7i2.12890

Abstract

Semut rangrang (Oecophylla smaragdina) berperan penting sebagai predator alami pada berbagai tanaman, namun kajian ekologi di lingkungan kampus dengan kombinasi vegetasi alami dan tanaman hias masih terbatas. Penelitian ini bertujuan mengidentifikasi jenis pohon sarang, karakteristik habitat, dan sebaran sarang di Kampus UIN Ar-Raniry sebagai dasar pengelolaan vegetasi berbasis konservasi. Survei eksploratif pada Desember 2021 mencatat 100 sarang pada 16 spesies pohon dari 10 famili. Pohon sarang umumnya memiliki habitus kokoh, percabangan memadai, daun lebar-panjang-mengkilap, serta kelenturan optimal di bawah cahaya matahari langsung. Sarang berada di pucuk batang, sering pada pohon dengan infeksi organisme tinggi. Rata-rata tinggi pohon sarang 4,6 m, tinggi sarang 3,89 m, panjang daun 15,83 cm, dan lebar daun 5,33 cm. Sarang tersebar pada pohon peneduh median jalan, taman, dan pekarangan gedung di Lingkungan Kampus UIN Ar-Raniry.
Documentation of Wild Edible Fruits in Palangka Raya City Lestari, Ria Windi; Wahid, Muhammd Risman; Pataya, Muhammad Rizki
JURNAL BIOLOGICA SAMUDRA Vol 7 No 2 (2025): Biologica Samudra
Publisher : Program Studi Biologi, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jbs.v7i2.13341

Abstract

Kalimantan Island is one of the regions with high diversity of wild edible fruit plants that are utilized by both local and urban communities as food resources, particularly as sources of vitamins. This study aimed to document the diversity of local seasonal fruits traded in the urban area of Palangka Raya City. Data were collected through observation and recording at traditional markets, seasonal vendors, and online marketplaces (social media) in Palangka Raya City during the period from November 2022 to August 2024, with species identification based on morphological characteristics and verified using botanical literature and online plant databases. A total of 65 species of local seasonal fruits, belonging to 21 plant families and 35 genera, were documented. The results indicate that local seasonal fruits remain highly consumed and have considerable economic value during their fruiting seasons. The data generated in this study provide a baseline for the conservation of local seasonal fruits, the strengthening of local food security, and the monitoring of phenological dynamics and the impacts of climate change in urban areas.

Page 4 of 4 | Total Record : 36

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