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Irwan Effendi
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INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : https://doi.org/10.31258/jnat
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry
Jurnal Natur Indonesia published since 1998, is a science journal that presents articles on research results, thoughts and views from researchers and experts in the field of biosciences (basic science), including biology, physics, chemistry and mathematics. In the field of biosciences (basic science); Biology, Physics, Chemistry, Mathematics.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 306 Documents
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Analysis of Microplastics on Sediments in the Waters of Selat Panjang of Tebing Tinggi Subdistrict, Meranti Islands Regency, Riau Province Ridwan Saiful Basri Pasaribu; Syahril Nedi; Elizal Elizal
Jurnal Natur Indonesia Vol. 19 No. 2 (2021): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The study was conducted from March to May 2021 which aims to identify the types, abundance of microplastics and compare the abundance of microplastics between stations in the waters of the Long Strait of High Cliff Subdistrict. Survey methods are applied and PVC pipes are used to collect sediment samples from three different stations with three sampling points at each station. The types of microplastics found are fragments with the most jumblah with film and fiber. The most widely found types are fragments, followed by film and fiber. The abundance of microplastics at Tanjung Harapan Port (5900.00 partkels /kg of dry sediment) is higher than the mouth of the Dorak coastal river (5306.67 partkels/kg of dry sediment) and Banglas Village Mangrove Ecotourism (4120.00 partikels/kg of dry sediment). The results showed that the abundance of microplastics between stations differed significantly. Microplastic differences based on further independent test samples t-test showed that each station compared to mangrove ecotourism area will be significantly different, while between Tanjung Harapan Port and the mouth of the Dorak coastal river showed no significant difference
Utilization of Tofu Liquid Waste as Organic Fertilizer on the Growth and Production of Paddy Rice Plants (Oryza sativa L) Wili Heriko; Tri Nopsagiarti; Angga Pramana
Jurnal Natur Indonesia Vol. 19 No. 2 (2021): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research has been carried out in Kedundung Island Village, Central Kuantan District, Kuantan Singingi Regency. This research takes place for approximately four months starting from November 2017 until March 2018. This study aims to determine the effect of Tofu Liquid Waste as Liquid Organic Fertilizer on Plants and Production of Paddy Rice (Oriza sativa L). The parameters observed in this study include: plant height, age of flowering, age of harvest, number of productive tillers, and dry grain weight. This study aims to determine the effect of Tofu Liquid Waste as Organic Fertilizer on the Growth and Production of Rice Field Crops. The design used in this study is a Non Factorial Randomized Block Design (RBD) consisting of one factor, namely factor A (Tofu Liquid Waste) consisting of 4 levels: A0 (control), A1 (600 mL/plot), A2 (1200 mL/plot), A3 (1800 mL/plot). The observational data from each treatment were statistically analyzed and continued with the Next Test of Honestly Significant Difference at the 5% level. The results showed that the Tofu Liquid Waste treatment had a significant influence on the parameters of observation of Plant Height, Flowering Age, Harvest Age, Number of Productive Tillers and Dry Grain Weight. The best treatments were A3 for observation of Plant Height (124.91 cm), Flowering Age (73.99 days), Harvest Age (95.74 days), Number of Productive Tillers (50.91 stems), and Dry Grain Weight (100.16 g)
Microplastic Content in Blood Cockles (Anadara granosa) from the Coastal Waters of Tanah Merah Meranti Islands, Riau Nirana Firda Caesaria Wulandari; Zulkifli Zulkifli; Bintal Amin
Jurnal Natur Indonesia Vol. 22 No. 2 (2024): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.2.107-113

Abstract

This research was conducted in December 2023 to determine the type and content of microplastics in blood cockles (Anadara granosa) by taking samples from the coastal waters of Tanah Merah Beach, Meranti Islands. The sampling location was based on the purposive sampling method divided into residential areas, fishing ports, and mangrove areas. Blood cockle samples from the three locations were selected for only large sizes (2.5-3.7cm). The water quality parameters at the sampling location were measured for temperature, salinity, and pH, indicating that the coastal waters of Tanah Merah Beach are still natural habitats for blood cockles. Three types of microplastics were found in blood cockles, namely fiber, film, and fragments, with an average abundance of 56.33 particles/ind (p>0.05). Further research is needed regarding size differences and relationships with environmental parameters
Carbon Storage Potential in Seagrass in the Water of Poncan Gadang Island, Sibolga City, North Sumatra Province Sahrul Ramadhan; Zulkifli Zulkifli; Bintal Amin
Jurnal Natur Indonesia Vol. 22 No. 2 (2024): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.2.114-121

Abstract

This research was conducted in February - March 2023 in Poncan Gadang Island, Sibolga City, North Sumatra Province. This study aimed to analyze the density of seagrass at each station in the research location, analyze the differences in biomass and carbon stocks in the above-ground biomass (Agb) and below-ground biomass (Bgb) parts between stations, the relationship between seagrass density and seagrass biomass and carbon stocks, and the carbon storage potential of seagrass in the waters of Poncan Gadang Island, Sibolga City, North Sumatra Province. The method used in this research was a survey method, which involved direct observations and measurements of samples in the field. The samples were then analyzed in the laboratory, and the results were described descriptively. The calculation results of carbon storage using the Loss on Ignition method for E. acoroides in Poncan Gadang Island are as follows: 14,836.07 gC/m2 at station I, 3,975.09 gC/m2 at station II, and 65,073.32 gC/m2 at station III, with a total carbon storage for E. acoroides species of 83,884.48 gC/m2. On the other hand, C. rotundata shows relatively lower results compared to E. acoroides, with 8,353.20 gC/m2 at station I, 12,056.76 gC/m2 at station II, and 7,235.53 gC/m2 at station III, with a total of 27,645.49 gC/m2. It can be concluded that the seagrass species E. acoroides has a larger biomass and carbon content compared to C.rotundata, thus making a significant contribution as a carbon sink in the study area.
Analysis of Nitrate, Phosphate, and Phytoplankton Abundance Content in Apar Waters Pariaman City West Sumatra Adini Dwi Ratna Hafnizar; Syahril Nedi; Elizal Elizal
Jurnal Natur Indonesia Vol. 22 No. 2 (2024): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.2.122-128

Abstract

Apar Beach is one of the tourist destinations in North Pariaman District, Pariaman City, West Sumatra. These tourism activities can affect water quality. In addition to anthropogenic activities, several factors can affect the quality of these waters, among the compounds contained in Apar waters, namely the content of nitrates, phosphates, and the abundance of phytoplankton. This study aimed to determine nitrate and phosphate content, how phytoplankton abundance, and the relationship between nitrate, phosphate, and phytoplankton abundance. The survey method was used in this study. The results of this study showed nitrate content at station I of 0.82 mg/L. Station II is 0.78 mg/L and station III is 0.90 mg/L. while the phosphate content at station I is 0.72 mg/L. station II is 0.71 mg / l and station III is 0.73 mg/L. The average phytoplankton abundance at station I was 249.99 ind/l. Station II is 288.88 ind/l, and station III is 327.77 ind/L. The relationship between nitrate and phosphate concentration with phytoplankton abundance is obtained value (R2) 0.215, which means nitrate and phosphate affect phytoplankton abundance by 21.5%. In comparison, 78.5% is influenced by other factors, while the correlation coefficient value (r) of 0.464 means that nitrate and phosphate concentration with phytoplankton abundance has a moderate relationship
Macrozoobenthos as a Bioindicator for Water Quality on the Coast of Padang City, West Sumatra Asma Ul Husna Putri; Afrizal Tanjung; Efriyeldi Efriyeldi
Jurnal Natur Indonesia Vol. 22 No. 2 (2024): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.2.129-135

Abstract

The research was carried out in January 2024 at the coastal waters of Padang City, West Sumatera Province. This research aims to determine the structure of the macrozoobenthos community as a bioindicator of water quality on the beaches of Padang City. Purposive sampling was used to get the sample, and then data was analyzed using FBI methods. (Family Biotic Index). The research results using FBI calculations show that Station 1 is in a good category with a score of 4.73, Station 2 is in the good category with a score of 4.71, and Station 3 is in the relatively poor category with a score of 6. Thus, the water quality based on macrozoobenthos as bioindicators of the coastal waters of Padang City, with an FBI value, was found to have an average of 5.14, which falls into the moderate category
Habitat Characteristics and Abundance of Mangrove Crabs in the Mangrove Forest of Concong Dalam Village in Concong District Indragiri Hilir Regency David Aditya Simanjuntak; Syafruddin Nasution; Zulkifli Zulkifli
Jurnal Natur Indonesia Vol. 22 No. 2 (2024): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.2.136-142

Abstract

This study was carried out in February 2024 in Concong Dalam Village, Concong District, Indragiri Hilir Regency, to know the habitat characteristics, types and distribution of abundance and size of mangrove crabs. This research uses a survey method by determining stations using purposive sampling consisting of 3 stations, where at each station, nine traps are installed with an area of around 628 m2/trap within 1 x 24 hours. Each trap is given chicken head bait in the morning at low tide, with two traps lifted at each high tide. A one-way ANOVA test was carried out to determine differences in abundance between stations. The results showed that the substrate was muddy with a moderate organic content of 12,82%. There were two species of mangrove crabs, including Scylla serrata and S.tranquebarica, where S. serrata dominated the population. The average abundance of mangrove crabs in the area was a value of 47,76 ind/ha, and there were no significant differences among stations. The size distribution of the species S. serrata (shell length 6-9,12 cm; shell width 9,08-13,31 cm; and weight 130-380 g), while in the species S. tranaubarica (shell length 6,52-6,98 cm; shell width 10,11-10,54 cm and weight 180 g). Small sizes dominated the population of mangrove crabs.
Potential and Management Strategy of Indragiri Hilir Regional Conservation Area (MPA), Riau Province Lucky Syarif; Efriyeldi Efriyeldi; Trisla Warningsih
Jurnal Natur Indonesia Vol. 22 No. 2 (2024): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.22.2.143-149

Abstract

ABSTRACT The Indragiri Hilir Regional Conservation Area, Riau Province, has various potentials with high economic value and can be used sustainably. The effectiveness of conservation area management is determined by aspects and factors from inside and outside the conservation area. This study aims to (1) identify the potential of the Indragiri Hilir Regional Conservation Area;  (2) analyze internal factors and external factors in the management of regional conservation areas (KKD); (3) formulate the main strategies and alternative strategies in effective management of regional conservation areas in Indragiri Hilir Regency. The survey method was used in this study. The data collected consists of primary data and secondary data; the management strategy of the Indragiri Hilir Regional Conservation Area is carried out using SWOT Analysis and AHP analysis. The study results show that the potential of the Indragiri Hilir KKD area consists of human capital, natural resources capital, artificial capital, and social and economic potential. Internal factors in the management of regional conservation areas consist of community openness in improving an area, the commitment of the Central Government, the commitment of the Riau Provincial Government, the commitment of the Regency Government, local wisdom, the availability of potential natural resources, the number of population human resources, the quality of community human resources, coordination and communication, regional development directions and policies, legal instruments, and law enforcement. External factors consist of SDGs, government programs based on natural resource conservation, corporate involvement in environmental planning, participation of community empowerment companies, research and community-based community service, sectoral ego and spatial ego attitudes, land degradation and ecosystem damage, economic liberalization and political interests, moral hazard actions of stakeholders
Morphogenetic Sharks of Genus Carcharinus Traded at Southwest Aceh Fish Landing Sites Asri Mursawal; Samsul Bahri; Sri Wahyuni; Hayatun Nufus; Rudi Hermi; Muhammad Ali Sarong
Jurnal Natur Indonesia Vol. 21 No. 2 (2023): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Research on the types of sharks traded at the Southwest Aceh fish landing site was conducted in September 2022. The purpose of this study is to analyze the morphology and genetic analysis of sharks. Sampling uses purposive sampling techniques, for morphological analysis refers to shark identification books, while genetic analysis uses the Sanger method used at the sequencing stage. Morphological data analysis using Image-j software, for genetic analysis, using Mega 6 (Molecular Evolutionary Genetic Analysis). Morphological analysis was carried out at the Laboratory of Biosystematics and Marine Genetics, Faculty of Fisheries and Marine Sciences, Teuku Umar University. Genetic analysis was carried out at the Denpasar Biodiversity Laboratory, Bali. The results of this study found two species of sharks with a total of 8 individuals from the genus Carcharinus.
Effect of Noni Extract (Morinda citrifolia L.) on Spermatozoa Quality of Mice (Mus musculus L.) Mita Ariani; Ardelia Febriana; Feby Djumaita Sari; Khairunisa Khairunisa; Yusni Atifah; Helsa Rahmatika
Jurnal Natur Indonesia Vol. 21 No. 2 (2023): October
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This study aims to see the effect of giving noni extract (Morinda citrifolia L.) on the quality of spermatozoa of mice (Mus musculus L.). This study was conducted using an experimental method, with a completely randomized design (RAL), 3 treatments with 5 replicates with 15 male mice divided into three treatment groups, namely the control group (P0), the treatment group with a concentration of 0.3 g/BW (P1), and the treatment group with a concentration of 0.6 g/BW (P2) which then the data were analyzed using ANOVA. This research was conducted from March 2 to April 4, 2023. Observations of the effect of giving noni extract were made by making wet preparations of mice sperm and then observing under a microscope. Based on the research conducted, it was found that noni extract had a different effect from each concentration on motility and morphology in sperm. From the research, it can be concluded that the higher the concentration of noni extract given to mice will reduce the quality of sperm in mice However, at a concentration of 0.3 g/BB, it was found that noni had a positive effect on sperm morphology and motility in mice (Mus musculus L).

Page 27 of 31 | Total Record : 306

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