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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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Study of Several Aspects of Fishery for Guiding Barrier Fishing Gear in The Coastal Town Palopo Ridwan Sukimin; Danial Danial; Abdul Rauf
Jurnal Biologi Tropis Vol. 21 No. 2 (2021): Mei - Agustus
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.v21i2.2743

Abstract

Fishing is a profession that has long been carried out by humans and is estimated to have been thousands of years old. Sero is one of the many types of fishing gear that is often operated by coastal fishermen, especially in the Palopo City area. Fish, crabs, squids, lobsters, turtles and even estuarine crocodiles are just a few examples of variations in the types of marine life that can be trapped in sero fishing gear. Along with the growth of human population and advances in fishing technology, the level of exploitation is increasing. On the other hand, the carrying capacity of the environment, including fish resources, has limitations. The increasing number of fishing activities accompanied by the reduction of catch targets also causes competition between fishermen to compete for these resources often occurs. These things then motivated the author to conduct a scientific study in the hope that the results of this study can be one of the basis for the preparation of regulations, especially with regard to the use of sero-type fishing gear in Palopo City. The purpose of this research is to examine the existence of sero fishing gear in relation to potential conflicts, business contribution, types of catch, selectivity, and estimated catch to fishing effort. The research method used includes qualitative and quantitative analysis of several respondents who were selected either randomly (purpuse sampling) or based on a commonly used formula. The data obtained from the respondents are based on the results of interviews, both through filling out closed and open questionnaires. In addition to data from interviews, other necessary data are taken from government agencies, the results of previous research by experts, or taken directly at the research location. Based on the results of the study, the potential conflict between the use of sero fishing gear against other fishing gear users only has the potential to use traps, throwing nets, and hand lines. comparison of financing (R/C), and categorized quickly through analysis of return on investment (PP). The types of sero fishing gear caught consisted of 33 species of fish, 7 species of crustaceans, and 1 species of mollusk. The variety of species caught also proves the level of selectivity of fishing gear sero fishermen in Palopo City is categorized as medium based on species diversity analysis (H') and low category based on dominance analysis (D). The results in this study also prove that the level of selectivity of fishing gear sero fishermen in Palopo City is very low even though the level of exploitation of fisheries resources in Palopo City is actually still in the developing stage. Things that can be recommended based on the results of this study are the efficiency of the number of sero fishing gear and the use of mesh sizes as well as increasing efforts to conserve mangroves as a source of primary productivity.
The Perceptions of Local Community's About Diversity of Mangrove Ecological Potential for Ecotourism Development in the South Coast of Lombok Island, Indonesia Lalu Raftha Patech; Kumala Ratna Dewi; Zulhalifah Zulhalifah; Abdul Syukur; Jamaluddin Jamaluddin
Jurnal Biologi Tropis Vol. 21 No. 2 (2021): Mei - Agustus
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.v21i2.2741

Abstract

The utilization of the coastal environment is still dominated by-products and has not yet switched to ecosystem service products, such as the use of mangrove ecosystems as ecotourism. This study aims to assess the local community's perception of the potential diversity that becomes an object for the community's economy. The research method uses surveys, observations, and interviews for social data, while the ecological data use transect and quadratic methods. Furthermore, data analysis used descriptive statistics. In addition, ecological data were analyzed using density (Ki), relative frequency (FR), diversity (H') of mangroves, and ecological indexes (Diversity (H'), Evenness (E), Dominance (D)). The results of the study found six mangrove species, ten echinoderm species, and thirteen bivalves. The highest diversity index (H') was in Poton Bako 1.80 and the Evenness index ranged from 0.80 – 0.98 with a stable category. Biota relative dominance the association index of echinoderms is high 0.79–0.11. Meanwhile, the bivalves Dominance index of 0.03-0.11 was low. In addition, local community's perception of mangrove conservation for ecotourism, 63% of the community stated, 7% is not possible and 30% is not. The feasible value of mangrove development is 62%, 17% is not feasible and 21% does not know. The priority developed by Eduwisata is 48%, Bird Watching is 20% and Tracking is 32%. The conclusion is that the choice of using mangrove ecosystem services can be developed as a policy in overcoming economic threats and the vulnerability of marine biota as well as solutions for local communities.
The Effect of Wall Type and Environmental Conditions toward Blood Type Identification Success Rate in Identifying Criminal Evident Dinar Putri Rahayu; Desti Christian Cahyaningrum; Bowo Nurcahyo
Jurnal Biologi Tropis Vol. 21 No. 2 (2021): Mei - Agustus
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.v21i2.2781

Abstract

Findings of blood at the crime scene (TKP) can provide important information in criminal cases such as homicide. Blood findings at crime scenes are usually blood spots or traces of blood that can be found on various substrates. This study aims to determine the type of wall substrate and environmental conditions that have the ability to preserve blood better, prove by success rate in identifying blood type in ABO system until 336 hour of exposure. In this study, blood samples were exposed to three variations of wall substrates, namely plastered walls, plastered and painted walls, plastered and oil-painted walls; and in two different environmental conditions (indoor and outdoor). The method used to identify blood type in this study was absorption elution. First, blood samples from substrate was transferred to a gauze by NaCl 0,98%. Then a confirmation test was carried out to ensure that the gauze sample contains a blood sample. Positive results of the confirmation test were indicated by a change in the color of the sample to bluish green when it is dripped with H2O2 and Leuco Malachite Green (LMG). The positive sample was then dripped with antiserum to determine the blood type. The success of identification of blood groups was indicated by the agglutination in the samples that were dripped with antisera A, because the blood samples used in this study are group A. The results showed that the success rate of blood group identification on the three types of substrates in the indoor environment for 336 hours was 100%. Meanwhile, in the outdoor environment, only blood samples exposed to plastered wall substrate and wall paint for 264 hours could be identified for their blood type. It can be concluded that the three types of wall substrates have the same ability to preserve blood samples for up to 336 hours of exposure, but the environmental conditions that give the best percentage of successful blood group identification were in indoor conditions. For further research is recommended to focus on external environmental factors that have the most influence on the success of blood group identification in dried blood samples.
Community Structure of Seagrass Field in Litoral Zone of Leweung Sancang Garut Nature Reserve Dimas Zulfadillah; Diana Hernawati; Diki Muhamad Chaidir
Jurnal Biologi Tropis Vol. 21 No. 2 (2021): Mei - Agustus
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.v21i2.2725

Abstract

Seagrass meadows or seagrass beds are one of the important components in coastal ecosystems. Seagrasses provide ecosystem services for various biota that live in it as well as components of the surrounding coastal ecosystems. The Sancang Nature Reserve is one of the coastal areas that has seagrass communities, and seagrass observation data is needed for reference to conservation strategies. This study aims to determine the condition of the cover and the structure of the seagrass community that fills the littoral zone of the Sancang Nature Reserve using the quadratic transect method, which was conducted from March 17 – 21, 2021. The data collected were seagrass species, species frequency, species cover and total cover, and the importance value index of species. Observations were made at 3 stations with an area of 100 m2 each along Ciporeang Beach, at each station 30 square transects with a size of 50 cm were placed, with 1 square transect divided into 25 grids measuring 10 cm. As well as the observation of environmental physical and chemical indicators. The results showed that the seagrass community in the research sites were overgrown by species Cymodocea rotundata and Thalassia hempricii which had a cover condition in the rich category with a percentage of 61.09%. Species densities were 117 i/m and 679 i/m, species closures were 36.95% and 25.63%, and the importance value index of species were 1.49 and 0.54. The difference was significantly influenced by physical indicators such as substrate structure and current velocity, while the chemical indicators at each station did not show a significant difference. Nutrient content data in the substrate at each station is needed to get more detailed conclusions about the factors that affect seagrass cover on the Sancang coast.
Community of Mangrove Category Tree and Sapling in The Sekotong Bay, West Lombok Lalu Japa; Karnan Karnan; Didik Santoso
Jurnal Biologi Tropis Vol. 21 No. 2 (2021): Mei - Agustus
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.v21i2.2698

Abstract

Community of mangrove in the Bay of Sekotong, West Lombok was studied to know the species composition, individual density of each species, and percentage covering of mangrove canopy. Total 28 plots of 10 m x 10 m were set in 9 transects in 5 stations. Photographs of canopy covering and mangrove community composition were analyzed by using software ImageJ and template spreadsheet 10x10, the new version of March 2018. The community of mangrove of Sekotong bay, West Lombok consists of 8 species, 5 genera, and 4 families. Rhizophora apiculata & Rhizophora stylosa were recorded in seven of nine transects (78% of transect).  Ceriops tagal was a species that was also recorded to have the highest density (3700 trees/ha) in transect SKTM02B. The average density of the mangrove sapling category was higher than the mangrove tree category. The three highest covering percentages of canopi mangrove community took place in transects SKTM01A, SKTM01B, and SKTM04T.
Conservation Status of Bird Species on Promasan Hiking Trail, Mount Ungaran, Central Java Arifah Purnamaningrum; Moh Kafa Bihi; Anif Risqianti Harits
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2841

Abstract

Mount Ungaran is one of the dormant volcanoes in Central Java. The condition of the unspoiled forest in the Mount Ungaran area is a good habitat for fauna, including birds. There are several hiking trails traversed by mountain climbers, one of them is the Promasan hiking trail. This study aims to determine the diversity of bird species and identify their conservation status on the Promasan hiking trail. Data were colected by Indices Ponctuels d'Abondance (IPA), Line Transect, and Point Count methods. Bird species diversity was determined by the Shanon index. Determination of bird conservation status based on the IUCN Red List, CITES Appendix, Government Regulation (PP No. 7 of 1999) and Ministry of Environment and Forestry Regulation (PERMENLHK RI No. 106, 2018). The results showed that there were 24 bird species belonging to 19 families. The diversity of bird species was classified as moderate (Shanon index = 2.59). There were two species including CITES Appendix II. Based on the IUCN Red List, there was one species in the Endangered (EN) category, 23 species in the Least Concern (LC) category. There was one species that is protected according to Government Regulation (PP No. 7 of 1999). The 3 species include as protected under the Ministry of Environment and Forestry Regulation (PERMENLHK RI No. P.106, 2018). Monitoring the presence of birds in this area must be carried out regularly.
The Effect of Fermentation Length and Dosage of Liquid of Organic Fertilizer Banana Peel on the Growth of Red Spinach (Amaranthus Tricolor L.) Nurul Fadhilah; Prapti Sedijani; I Gde Mertha
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2759

Abstract

Fertilizer substitutes elements that have been used by plants. There are two available fertilizers, inorganic and organic fertilizers. Long-term use of inorganic fertilizers on a land negatively affects the crop and the soil fertility, hence, the organic one is a better choice. This study aims to determine the effect of liquid organic fertilizer of banana peels on the growth of red spinach and determine the best treatment for red spinach growth. This study used a Completely Randomized Design consisted of 2 factors (dosage of POC banana peel and length of fermentation time). Each has 4 levels, 3 replicates. The results of data analysis using ANOVA test show that the treatment of fermentation length and dosage of POC banana peel increase growth parameters of red spinach include plant height, leaf number, leaf area, fresh weight, and dry weight, while the interaction treatment of fermentation length and dosage of POC banana peel affects almost all growth parameters, except for the leaf area parameter that shows no interaction. DMRT (α 5%) test shows that the best combination treatment for plant height and fresh weight is a dosage of 8 ml POC of banana peel that have been fermented for 15 days, and the best treatment for leaf number and dry weight is a dosage of 8 ml POC of banana peel that have been fermented for 10 days.
Association of aquatic biota with mangrove plants in the land transfer area of Lino Tolongano Village, South Banawa District, Donggala Regency and as a media for public information Syech Zainal; Aan Febriawan; Moh. Sabran
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2956

Abstract

Mangrove forest is a unique natural ecosystem with high ecological value. The mangrove ecosystem is one of the areas with high productivity due to the presence of litter and litter decomposition occurs and produces detritus. This study aims to describe aquatic biota associated with the remaining stands of mangrove plants in the area of land conversion in Lino Tolonggano Village, South Banawa District, Donggala Regency, so that the surrounding community can be informed about the importance of the existence of mangrove forests. This type of research is descriptive quantitative research, with survey method with purposive sampling technique. The data obtained were analyzed using the association determination formula as well as additional posters that will be used as information material to the public regarding the existence of mangroves in the area of land conversion. The results obtained in this study indicate that the types of mangroves and associated aquatic biota are Sonneratia alba, Rhizophora mucronata and Rhizophora apiculata for the mangrove group and Nerita sp, Telescopium telescopium L, Uca sp and Periophthalmus modestus for the aquatic biota group. Data analysis showed that there were associations between plant species in the form of negative associations. This indicates that the aquatic biota found are not biota that use mangroves as a place to live.
White Oyster Mushroom (Pleurotus ostreatus) As A Source of Food Fiber and Its Applications in Meat Processing Audina Putri; Djoko Kisworo; Bulkaini Bulkaini
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2869

Abstract

White oyster mushrooms (Pleurotus ostreatus) can be used as fillers sausages mix because the physical properties of chewy like meat and high fiber content. The main raw material of sausages is meat, so that rejected layer chicken meat can be used even though it has low quality of the meat and less liked by the consumer, however, as a food ingredient it still has potential to improve the quality. Therefore, to improve the quality and preferences of the consumer, it is necessary to innovate processed into sausages with the addition of a fiber source, namely white oyster mushroom flour. This study aims to examine the use of white oyster mushroom as a source of dietary fiber in sausage processing. The research materials used were white oyster mushrooms, rejected laying hens and spices. The experiment was designed using a completely randomized design (CRD) with 4 treatments and 3 replications, which included: without the addition of white oyster mushroom flour P0 (0%), the addition of oyster mushroom flour at the level of P1 (5%), P2 (10%), P3 ( 15%). Data were analyzed based on analysis of variance using Statistical Analysis System (SAS–Software). The results showed that the level of white oyster mushroom flour increased the organoleptic value of color, aroma and texture significantly (P<0.05). The addition of white oyster mushroom flour was also higly significant (P<0.01) in increasing the crude fiber content of sausages. It can be concluded that cooking loss was higher in line with the level of white oyster mushroom flour. But not on the value of water holding capacity. The higher the level of white oyster mushroom flour, the higher the crude fiber of the sausage. In general, the quality of sausages meets the Indonesian National Standard (SNI 3820 - 2015), interms of normal organoleptic value.
The Use of Lamtoro Plants as Organic Fertilizers for Cayenne Pepper Plants of Local Varieties (Capsicum frutescens L.) Nur Aini Bunyani; Robert A. Sole; Joritha Naisanu
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2848

Abstract

Lamtoro is a dry land plant that is widely found in East Nusa Tenggara. The abundant availability of this plant causes this plant to be of no economic value. On the other hand, this plant contains a lot of nitrogen which can be used to supply nutrients for plants, by utilizing the leaf extract.Lamtoro leaf extract can be used as organic fertilizer for chili plants, where this plant has economic value and is in great demand by the public. This study aimed to determine the effect of various concentrations of lamtoro leaf extract which showed the best results on cayenne pepper. This research has been carried out on farmers' land located in the Liliba Family, Oebobo District, Kupang City which took place from April 2020 to July 2020. The design used in this study was a randomized block design (RAK) with 5 treatments and 4 replications, with treatment P0 (control), P1 (administration of 200 ccliter of lamtoro extract concentration of water-1), P2 (administration of 250 ccliter of water-1 extract of Lamtoro concentration). ), P3 (Giving Concentration of Lamtoro Extract 300 ccliter water-1), P4 (Giving Concentration of Lamtoro Extract 350 ccliter water-1). The results of this study indicate that the treatment of lamtoro leaf extract has a very significant effect on plant height(111cm), number of leaves (221.25 pieces), number of fruit (175.25 pieces), and fruit weight (128,875 kg).

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