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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,562 Documents
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Rhizophoraceae Flower and Fruit Morphology as Evidence of Resilience of Mangrove Revegetation in Lembar West Lombok Ayu Diah Kusumadewi Anak Agung; Agil Al Idrus
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4345

Abstract

The stability of the mangrove ecosystem is influenced by climate change. One indicator of the resilience of mangrove species is the emergence of reproductive organs (flowers and fruit). The purpose of this study was to describe the morphological characteristics of fruit and flowers as evidence of the resilience of mangrove revegetation in West Lombok. This research was conducted in a mangrove area on the coast of West Lombok. The samples of this study were all species of the Rhizoporaceae family from revegetation. Mangrove data which includes the names of revegetation mangrove species from the Rhizoporaceae family using the transect method. Furthermore, data analysis was carried out qualitatively and quantitatively. Qualitative analysis was conducted to describe the types of mangroves. Quantitative analysis was conducted to explain the diversity of mangrove species. Mangrove diversity can be determined using the diversity theory by Shannon-Wienner (H'). Based on the results of mangrove data which includes the names of revegetated mangrove species from the Rhizophoraceae family, three mangrove species were found, namely Rhizophora mucronate, Rhizophora stylosa, and Rhizophora apiculata which identified the morphological characteristics of the fruit and flowers. The results of this study indicate the results of the diversity index value H'1 < H'< 3, then the diversity index is categorized as medium. So it can be concluded that the morphological characteristics of fruit and flowers in the Rhizophoraceae family can be used as evidence of the resilience of mangrove revegetation results.
Development of Mangrove Revegetation in Increasing the Availability of Food Materials from the Existence of Association Biota in Central Lombok M. Akhyar Rosyidi; Agil Al Idrus
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4355

Abstract

Mangrove forest is an ecosystem that functions as a habitat for various animals and biota, but mangrove damage has a negative impact on the diversity of associated biota and the availability of food materials. This study aims to determine the development of mangrove revegetation in increasing the availability of food materials from the presence of associated biota in Central Lombok. Primary data collected from quadratic sampling along the line transects were further analyzed to determine mangrove diversity and dispersion indices as well as macrofauna diversity, uniformity, dominance and abundance indices. The results of the analysis of mangroves, the highest diversity index was in Dondon Beach at 1.52, Tanjung Batutiang at 1.49 and Gili Perigi at 1.42, while the highest dispersion index at Gili Perigi at 0.61, Tanjung Batutiang at 0.55 and Dondon Beach at 0.51. Furthermore, the results of macrofauna analysis showed that the highest diversity index was in Tanjung Batutiang at 2.59, Dondon Beach at 2.51 and Gili Perigi at 2.49, the highest uniformity index at Tanjung Batutiang at 0.82, Dondon Beach at 0.80 and Gili Perigi at 0.79, the highest dominance index at Tanjung Batutiang at 0.91, on Gili Perigi and Dondon Beach of 0.89, the highest abundance index on Dondon Beach of 3.05, on Gili Perigi and Dondon Beach of 2.71. The conclusion of this study is that mangrove revegetation has succeeded in increasing the availability of food material in terms of the presence of macrofauna in Central Lombok.
Mapping Potential Carbon Content of Seagrass Species as Gas Regulation in Sekotong Waters, West Lombok Hendra Susana Putra; Agil Al Idrus; Rizal Umami
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i1.4369

Abstract

Seagrass is one of the ecosystems that absorbs carbon through the process of photosynthesis which can be stored in the form of biomass in the leaves, rhizomes and roots. The content of heavy metal Hg in roots, rhizomes, and leaves of seagrass species has a negative correlation, namely the higher the heavy metal content, the lower the chlorophyll content, which can trigger climate change due to greenhouse gases. The aim of this study was to determine the potential carbon absorption capacity of seagrass species in Sekotong waters, West Lombok. The research method used _ is descriptive quantitative. Plant samples were collected using the Purposive Random Sampling method. Analysis of the carbon content in samples of seagrass species can be identified through C-organic analysis conducted in the laboratory using the Walkley and Black method. The results of the study found that the average Hg and carbon content of seagrass species in seagrass beds were Station 1: (Hg: 0.31, Carbon: 63%), Station 2: (Hg: 0.45, Carbon: 50%) and Station 3: (Hg :0.35%, Carbon:55%). so that it can be concluded that the carbon content in seagrass species decreases with the level of involvement of mercury in seagrass species. The research results are expected to be used as a source of information related to carbon absorption by seagrasses in Sekantung waters, West Lombok so that they can be taken into consideration for the management of water areas, especially the waters of Waring Sekotong, West Lombok.
Bacillariophyceae Diversity as Bioindicator of Pollution in the Coastal Waters of Klui Beach, North Lombok Yuni Safrian Hadi; Lalu Japa; Lalu Zulkifli
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4387

Abstract

Klui Beach is one of some famous beaches tourism destination in the Northern part of Lombok Island which is commonly visited by many tourists. Tourisms and resindents activities that take place around the coast can produce various wastes that have some prominent impact on pollution, for reducing water quality. Bacillariophyceae is a class of phytoplankton that is commonly abundant in marine waters and can be used as an indicator for controlling of water quality. The objectives of this study were to determine the level of pollution in the coastal waters of Klui Beach based on the Bacillariphyceae diversity index. The Haphazard sampling was applied for determining the sampling sites. The results showed that the composition species of Bacilllariophyceae consisted of 48 species which included in 17 orders. Average species abundance was 298.09 ind/L (low category). The spesies diversity index was 2.37 (moderate category). The level of water pollution in the Klui Beach was classified as not polluted.
The Carbon Absorption Value of Bruguiera gymnorrhiza in the Coastal Area of Dulupi Village, Boalemo District Ilyas H. Husain; Abubakar Sidik Katili
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4410

Abstract

Carbon dioxide (CO2) levels in nature are increasing along with the development of human civilization. Mangrove forests can absorb and store carbon in large quantities and a long time so that it can become a strategy in mitigating climate change. This study aims to determine the Carbon Absorption Value of Above Surface Bruguiera gymnorrhiza in the Dulupi Coastal Mangrove Area, Boalemo Regency. This research is a quantitative descriptive study by measuring the density of Bruguiera gymnorrhiza mangrove vegetation using the distance method (Point-Centered-Quarter-Method). The density value of the mangrove species Bruguiera gymnorrhiza found in the coastal area of ​​Dulupi Village, Boalemo Regency is 12.49 trees/ha with an average distance of 11,231 m/tree. The calculation results of the total stem biomass value obtained from the sum of each individual Bruguiera gymnorrhiza mangrove biomass obtained a value of 12,251.37 Kg. The carbon absorption content in the leaves of the mangrove species Bruguiera gymnorrhiza in the coastal area of ​​Dulupi Village, Boalemo Regency, from all sample trees was 449.26 kg C/cm2 with an average carbon content of each sample tree's leaves of 17.97 kg C/cm2. So that the total carbon absorption potential of the stems and leaves of the Brugueira gymnorrizha mangrove species is 12,700.63 kg C/cm2.
Impact of Forest Fires on Micronutrients on Peat Soils in Rimbo Panjang Kampar Regency Ervina Aryanti; Sevi Dwi Adiya; Novita Hera
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4417

Abstract

Forest fires that occur on peat soils can change the chemical properties of the soil, including the abundance of micronutrients. The aims of this study was to compare micronutrients on unburned peat soil and one year after a fire in a peat soil conservation forest area in Rimbo Panjang, Kampar Regency, Riau Province. The study was conducted from October to December 2020. This study used an observation method. Data processing was analyzed using an Independent Sample T-test. The data testing parameters analyzed in the laboratory include pH, Fe, Cu, Mn, and Zn. The results showed that there was an increase in Fe micronutrients (11.33 to 31.87) in peat soils 1 year after the fire, while in other nutrients (Cu, Mn and Zn) and pH did not increase.
Study of Soil Erodibility in Various Agroforestry Systems Based on Elephant Foot Yam (Amorphophallus oncophyllus) in Bayan District, North Lombok Regency Rudy Fermana; I Gusti Made Kusnarta; Padusung
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4435

Abstract

Bayan District has a wavy to mountainous topography. The type of soil in the area is classified as Inceptisol, so it is very susceptible to erosion. An agroforestry system, with various stands of perennial crops, has been developed in the area, as a conservative measure to support the sustainability of land resources. This study aims to assess the value of soil erodibility in Elephant foot yam-based agroforestry systems in five types of stands, namely: Teak (A1), Cashew (A2), “Gamal” and Banana (A3), Cocoa (A4), and Coffee (A5). The method used is descriptive method with survey technique. Determination of the research location was carried out by purposive sampling with the criteria of land having a rather steep slope (15-17%), the soil order Inceptisol, located in the upper slope, and a high level of stand vegetation homogeneity.  Soil samples (undisturbed and disturbed) were collected using the diagonal method on 10 x 10 m plots randomly placed in each agroforestry system with a depth of 0-20 cm. Parameters observed were soil texture (pipette method), soil permeability (constant head), soil structure (qualitative in the field), and soil organic matter (Walkley and Black). The result showed that the value of soil erodibility, in agroforestry systems with different stands, was significantly difference, with the lowest value was found in the Coffee agroforestry system (A5) of 0,416 and the highest was found in the Cashew system (A2) of 0,661. The effectiveness of improvement soil erodibility in the agroforestry system of A5 was 37% better than A2.
Pterygium Prevention in Coastal Areas with The Use of Glasses I Dewa Ayu Natih Canis Paloma; Ni Nyoman Geriputri
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4456

Abstract

Pterygium is a disorder on the surface of the eye whose cause is not fully known however, advanced age and exposure to ultraviolet (UV) light are often associated with risk factors for pterygium. A coastal environment that is windy, full of sunlight, dusty, and sandy is one of the factors that can cause pterygium. Prevention of pterygium is very important because untreated pterygium can cause blindness. The purpose of this paper is to find out how to prevent pterygium by using glasses and how to choose good glasses, especially in coastal areas. Study searches were carried out on several websites, such as PubMed and Google Scholar, with keywords such as "Pterygium," "Coastal Areas," "Prevention," "Glasses," and "Sunglasses." The studies used are review articles, narrative reviews, books, and research results. The number of articles chosen by the author is as many as 15 articles. The importance of using and selecting glasses for pterygium prevention was discovered in a literature review. 
Antibacterial of Clostridium botulinum From Eagle Flower (Clitoria ternatea L.) Kombucha Body Wash as a Pharmaceutical Biotechnology Product Hari Hariadi; Titin Sulastri; Firman Rezaldi; Susanti Erikania; Rina Nurmaulawati
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4470

Abstract

Liquid bath soap made from telang flower kombucha fermented solution has potential as a pharmaceutical biotechnology product in inhibiting the growth of Clostridium botulinum bacteria. The aim of this study was to formulate and prepare a liquid bath soap with an active ingredient based on fermented eggplant kombucha solution in inhibiting the growth of Clostridium botulinum bacteria. The research design was carried out experimentally by making four liquid body wash preparations consisting of body wash base ingredients without active substances as negative controls. The basic ingredients for bath soap with the active ingredient are fermented butterfly pea flower kombucha solution with a concentration of 20%; 30%; and 40%. Disc diffusion is a test method used to inhibit the growth of test bacteria from each soap preparation. One way ANOVA and post hoc analysis are methods used to statistically analyze all liquid body wash preparations to see their effect on the growth of the test bacteria. The results of the study were proven and it can be concluded that based on one way ANOVA with a p value <0.05, 40% concentration of telaga kombucha bath soap is the best treatment for inhibiting the growth of test bacteria with an average diameter of the resulting inhibition zone of 18.50 mm and entering the strong category. The concentration of 40% was significantly different in inhibiting the growth of the test bacteria compared to the concentrations of 20% and 30% but not significantly different from the bath soap on the market as a positive control.
Utilization and Management of Pelagic Fisheries in West Sumbawa Regency, West Nusa Tenggara Province Erwansyah; Nunik Cokrowati; Baiq Raihanun; Ahlul Afwan; Purwana Hakim; Edy Sulman
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
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.v23i1.4496

Abstract

Kabupaten Sumbawa Barat (KSB), Nusa Tenggara Barat Province has potential fishery resources. Based on Permen KP No.18 of 2014 concerning the Republic of Indonesia State Fisheries Management Area (WPPNRI), KSB marine is included in WPPNRI 573. The purpose of this study was to determine the sustainable potential of pelagic fisheries and their level of utilization. This research was conducted in KSB from January to November 2022. The research method used was a field survey method and a descriptive method. The results of the study showed that the relationship between effort and CPUE for large pelagic fish obtained a linear equation y = 12.067x + 277.6 with R2 = 0.1785. This equation explains the positive relationship between production and effort, meaning that fishing gear affects the production of large pelagic fish. the optimum effort value is 1674.90 trips per year and the maximum sustainable catch is 232,459.1 kg per year. Effort relationship with CPUE of small pelagic fish obtained a linear equation y = -18.575x + 11512 with R2 = 0.2817. This equation explains the negative relationship between effort and catch. This shows that fishing gear is not the main factor affecting the amount of production. the optimum effort value is 106917.700 trips per year and the maximum sustainable catch is 992998.139 kg per year. The utilization rate value is 2.049%, with an effort level value of 0.001%. This study concludes that the potential and level of utilization of pelagic fisheries in West Sumbawa Regency are still below the sustainable potential.

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