Article Per Year (5 Year)
p-Index From 2020 - 2025
1.182
P-Index
This Author published in this journals
All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Science and Technology Indonesia Madani: Multidisciplinary Scientific Journal Journal of Fisheries & Marine
Rizka Amelia
Department Of Forestry, Faculty Of Forestry, Universitas Sumatera Utara
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Other

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
Genetic Diversity and Community Structure of Macrozoobenthos from Five Mangrove Forests in North Sumatra and Aceh, Indonesia Anggita Amelati Harahap; Rizka Amelia; Ipanna Enggar Susetya; Arida Susilowati; Desrita Desrita; Tadashi Kajita; Mohammad Basyuni
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 4 (2022): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.27.4.358-366

Abstract

Mangrove forests play an important role in macrozoobenthos ecology, assisting them in foraging, sheltering, and reproduction. In order to better understanding the genetic diversity and population genetic structure of macrozoobenthos, the mitochondrial 16S subunit (16S rRNA) gene was used. Present study aimed to determine genetic diversity and community structure of macrozoobenthos in the North Sumatra and Aceh mangrove forests, Indonesia. The reliaprep gDNA tissue miniprep system kit was used to extract 50 samples. To determine the PCR product's molecular weight, UVITEX software was employed. Genetic polymorphism was examined with GenAlex version 6.502, and each community underwent principal coordinates analysis (PCoA). MVSP 3.2.2 software and the unweighted pair group method with arithmetic mean (UPGMA) were used to construct the dendrogram. The 16S rRNA gene revealed a band size in the range of 370–500 bp. The PCoA showed that approximately all individual macrozoobenthos from each community structure were localized in the same quadrant. Genetic variation was varied by 3% between populations and 97.5% within individuals according to the analysis of molecular variance (AMOVA), with the dendrogram classifying the populations into two major clusters. Dendrogram analysis showed low genetic differentiation between macrozoobenthos populations of North Sumatra and the Aceh mangroves, implying the low ability of individuals in a population to adapt. The high polymorphic information content (PIC) value (0.886) reported was consistent with the number of alleles and size of the population's heterozygosity value. Present findings provide important information that will assist in formulation of mangrove conservation and restoration approaches. 
Polyisoprenoid Compounds from Tropical Fruit Trees in Universitas Sumatera Utara Campus Muttia Chandraputri Rizkiany; Rizka Amelia; Yuntha Bimantara; Hiroshi Sagami; Mohammad Basyuni
Science and Technology Indonesia Vol. 6 No. 4 (2021): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2021.6.4.267-272

Abstract

Tropical trees are a source of secondary metabolite compounds that have various biological activities that can help human life both for industrial and pharmaceutical needs. One of the secondary metabolites is polyisoprenoid. This study aims to identify and analyze polyisoprenoid compounds quantitatively from tropical fruit trees at the Universitas Sumatera Utara. Nine samples of tropical fruit were obtained, namely: Psidium guajava, Tamarindus indica, Manilkara kauki, Morinda citrifolia, Mangifera indica, Artocarpus communis, Artocarpus heterophyllus, Gmelina arborea, and Syzygium aqueum. Each sample was extracted and isolated the polyisoprenoid alcohol, then analyzed using two-dimensional thin-layer chromatography. The polyisoprenoid in fruit samples found at the Universitas Sumatera Utara was a type II and III polyisoprenoid compound. The total lipid values ranged from 48.7 mg/g dw to 262.9 mg/g dw, polyisoprenoids ranged from 1.2 mg/g dw to 9.5 mg/g dw, and polyprenols ranged from 0.5 mg/g dw to 5.7 mg/g dw. Carbon chain length and dolichol polyprenol lengths of each fruit were collected (Psidium guajava L.) (C70 C80), (Tamarindus indica L.) (C80 C95), (Manilkara kauki L.) (C80 C95 and C70 C90), (Morinda citrifolia L.) (C75 C100), (Mangifera indica L.) (C80 C90 and C75 C90), (Artocarpus communis) (C75 C95), (Artocarpus heterophyllus) (C70 C75 and C70 C100), (Gmelina arborea Roxb.) (C90 C95), and (Syzygiumaqueum) (C65 C90 and C75 C90).
Investasi Saham Syariah dalam Perspektif Ekonomi dan Hukum Islam Irfan Andinata; Fatawil Akbar; Rizka Amelia
Madani: Jurnal Ilmiah Multidisiplin Vol 1, No 6 (2023): Juli
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8124866

Abstract

Investasi saham syariah merupakan salah satu bentuk investasi yang sesuai dengan ajaran Islam, di mana dana atau sumber daya lainnya diamanatkan dengan tujuan memperoleh keuntungan di masa depan. Dalam Islam, investasi dianggap sebagai bentuk muamalah yang mubah atau diperbolehkan, selama dilakukan dengan niat yang baik dan mengikuti prinsip-prinsip Islam, Jenis pendekatan dalam penelitian ini adalah pendekatan studi literatur (literatur penelitian) dengan sumber data berupa data sekunder yang diperoleh dari studi sebelumnya dan sumber referensi lainnya, hasil diskusi di atas dapat disimpulkan bahwa saham-saham syariah dengan saham konvensional pada dasarnya tidak memiliki perbedaan yang signifikan. Satu-satunya perbedaan antara keduanya adalah saham yang diperdagangkan di pasar modal syariah harus berasal dari penerbit atau perusahaan yang memenuhi kriteria syariah (Shariah Compliance). Pemenuhan hak setiap pihak yang terlibat di dalamnya juga menjadi perhatian utama. Pembelian dan penjualan saham syariah dilakukan dengan selalu memperhatikan hak setiap pihak yang melakukan transaksi.
Implementation of 16S rRNA Gene for Fish and Shrimp Barcoding in Mangrove Ecosystems in North Sumatra and Aceh, Indonesia Hatika Hairani; Rizka Amelia; Ipanna Enggar Susetya; Arida Susilowati; Yuntha Bimantara; Tadashi Kajita; Mohammad Basyuni
Jurnal Ilmiah Perikanan dan Kelautan Vol. 15 No. 1 (2023): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v15i1.36686

Abstract

Highlight Research The genetic diversity of fish and shrimp from mangrove habitats was relatively substantial, with a heterozygosity of 0.926 and the exception of Langsa samples. AMOVA revealed that the diversity among individuals in the populations were higher compared to those within individuals. DNA barcode in mangroves is useful in developing mangrove conservation and restoration initiatives   Abstract Fish and shrimp are among the species that are vulnerable to high level of disturbance in mangrove ecosystem. This study aimed to investigate the implementation of 16S rRNA gene for fish and shrimp barcoding in mangrove ecosystems in North Sumatra and Aceh, Indonesia. 50 samples fresh fish and shrimp were collected from five mangrove ecosystems in North Sumatra, namely Belawan, Lubuk Kertang, Percut Sei Tuan, and Pulau Sembilan and Langsa of Aceh for DNA extraction process. The research was divided into four activities: sample collection, DNA isolation, PCR amplification, and data analysis. DNA was extracted using kit extraction (kit Reliaprep gDNA Tissue Miniprep System) and with PCR amplification. Genetic parameters were analyzed using Gen Alex 6.51 software and the relationship between sites was examined using the MVSP 3.22. The genetic diversity of fish and shrimp from mangrove habitats was relatively substantial, according to the findings, with a heterozygosity of 0.926, with the exception of Langsa samples, which were only identified in subclass A1. Genetic relationship between sites revealed that all samples clustered into two branches and were randomly dispersed within each site. This work confirmed the 16S rRNA gene worked for fish and shrimp barcoding in mangrove ecosystems, North Sumatra and Aceh, Indonesia and our findings are expected to be useful in developing mangrove conservation and restoration initiatives.
Mollusk Diversity in Percut Sei Tuan Silvofishery Ponds, North Sumatra, Indonesia Ipanna Enggar Susetya; Mohammad Basyuni; Muhammad Rakezza Rifzy Rifzy; Rizka Amelia; Yuntha Bimantara; Rusdi Leidonald; Amanatul Fadhilah
Jurnal Ilmiah Perikanan dan Kelautan Vol. 15 No. 2 (2023): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.vi.37772

Abstract

Highlight Research We found 16 species of mollusks with a total of 15 species from the gastropod class and 1 species from the Bivalvia class bivalves in the silvofishery ponds, recording a total of 369 individuals. The density of mollusks in July in pond I was 3.6 ind/m2, while it was 10.66 ind/m2 in pond II. The mollusk diversity index in October after rehabilitation was included in the high diversity category because the value of H' was 1.6 - 3.0. Pond I has a diversity index value of 1.89 and pond II 1.82. The value of C-organic concentration in both ponds ranged from 3.00% to 5.72%, which is the optimum level for mollusk growth.   Abstract Silvofishery is a system that combines mangrove and fishery to protect mangrove ecosystems and restore their functions, one of which is as a habitat for macrozoobenthos. Investigate the mollusks and mangrove density. Mollusk sampling was carried out on sub-plots measuring 1 x 1 m² in the mangrove vegetation transect, and mangrove density was measured by counting the number of trees directly on all of the mangrove species at two silvofishery ponds. A total of 16 species of mollusks were found at the observation site, consisting of gastropods and bivalves. The density of mollusks in July was 20 ind/m2 in pond I, while it recorded 9 ind/m2 in pond II. In October, after pond II rehabilitation, the density was inversely proportional to July, and the highest density was found in pond I at 10 ind/m2, while pond II measured 9 ind/m2. After rehabilitation, the index value H' decreased in pond I and pond II from 2.82 and 2.98 to 2.52 and 2.68, respectively. The mangrove density was 887 ind/ha in pond I and 686 ind/ha in pond II. The substrate in both ponds was clay. Nitrate concentration values "‹"‹in the substrate in both ponds ranged from 0.27% to 0.29%, phosphate recorded a percentage of 0.07–0.09%, and C-organic ranged from 3.00% to 5.72%. The water's physicochemical parameters and the type and content of the substrate were still suitable for mollusk life.
Co-Authors Anggita Amelati Harahap Arida Susilowati Iswanto Desrita Desrita Fadhilah, Amanatul Fatawil Akbar Hatika Hairani Hiroshi Sagami Ipanna Enggar Susetya Irfan Andinata Mohammad Basyuni Muhammad Rakezza Rifzy Rifzy Muttia Chandraputri Rizkiany Rusdi Leidonald Tadashi Kajita Tadashi Kajita Yuntha Bimantara Yuntha Bimantara Yuntha Bimantara