Jurnal Natur Indonesia最新文献

Reduction of Dispersant Pollutant (Linear Alkylbenzene Sulfonate) by Mangrove Plant (Rhizophora mucronata) 红树植物（Rhizophora mucronata）对分散剂污染物（线性烷基苯磺酸盐）的还原作用

Jurnal Natur Indonesia Pub Date : 2023-11-13 DOI: 10.31258/jnat.21.2.162-166

S. Nedi, Irwan Effendi, A. Tanjung, E. Elizal

{"title":"Reduction of Dispersant Pollutant (Linear Alkylbenzene Sulfonate) by Mangrove Plant (Rhizophora mucronata)","authors":"S. Nedi, Irwan Effendi, A. Tanjung, E. Elizal","doi":"10.31258/jnat.21.2.162-166","DOIUrl":"https://doi.org/10.31258/jnat.21.2.162-166","url":null,"abstract":"Linear alkylbenzene sulfonate (LAS) is the main component of dispersants that function as cleaners of various materials. The increasing use of LAS causes this compound to dominantly pollute coastal waters. Phytoremediation is the most environmentally safe alternative to physical and chemical methods. One of the potential plants as a phytoremediator is Rhyzophora mucronata. This research is an experiment as an application of LAS pollutant control by Rhyzophora Mucronata (R. Mucronata) plants in waters. After acclimatization and preliminary tests, the implementation of LAS phytoremediation tests by R. Mucronata plants in seawater media was carried out at concentrations of A1: 25 mg/L, A2: 100 mg/L, A3: 175 mg/L, A4: 250 mg/L, and A5: 325 mg/L and control (Control without plants) as a simulation of the presence of pollutants in coastal waters. The method used was a completely randomized design (CRD) with one treatment and 3 replications. The reduction of LAS concentration in the test media and its effect on R Mucronata leaf chlorophyll and dissolved oxygen were analyzed at week 2 to week 4. The analysis results showed that LAS compounds could be reduced to 91.48% at week 2 and 97.40% at week 4. Plant Water quality parameters (dissolved oxygen, temperature and pH) were measured daily. Based on the study results, LAS can be reduced by R. Mucronata plants 87-90.4% in week 2 and 95.1-97.4% in week 4. LAS exclusion by plants had a significant impact on the reduction of leaf chlorophyll content until week 4. LAS reduction by R. Mucronata in the media can increase dissolved oxygen content as an indication of improved water quality. R. Mucronata plants can be used as an alternative to control LAS pollution in waters","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139278493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Addition of Guava Leaves in Feed to the Blood Glucose of Carp reared in Brackish Water and Infected with Aeromonas hydrophila 在饲料中添加番石榴叶对在咸水中饲养并感染嗜水气单胞菌的鲤鱼血糖的影响

Jurnal Natur Indonesia Pub Date : 2023-11-13 DOI: 10.31258/jnat.21.2.156-161

Irwan Effendi, W. Windarti, Heri Masjudi, M. Razman, Ahmed Al-Harbi, Nisfi Maulidia Nasution, Tomi Syahputra, R. Kurniawan

{"title":"The Addition of Guava Leaves in Feed to the Blood Glucose of Carp reared in Brackish Water and Infected with Aeromonas hydrophila","authors":"Irwan Effendi, W. Windarti, Heri Masjudi, M. Razman, Ahmed Al-Harbi, Nisfi Maulidia Nasution, Tomi Syahputra, R. Kurniawan","doi":"10.31258/jnat.21.2.156-161","DOIUrl":"https://doi.org/10.31258/jnat.21.2.156-161","url":null,"abstract":"Guava leaves can be utilized as feed additives and medicine for aquaculture. Limiting factors in aquaculture, including stocking density, and salinity can cause stress in fish, so they are easily infected with disease. This study was conducted to determine the effect of guava on the blood glucose of carp reared in brackish water media. This research was conducted from August to September 2023 at the Marine Biotechnology Laboratory, Faculty of Fisheries and Marine, Universitas Riau. The method used in this study is an experimental method using a completely randomized design with 5 (five) treatments and 3 (three) replicates, the treatments are T0 (control), T1 (1.0g), T2 (1.5g), T3 (2 g), and T4 (2.5g). Carp measuring 5.00 ± 1.00 cm with a weight of 4.00 ± 0.50 g were obtained from farmers in the Koto Panjang hydroelectric reservoir, Sumatra, Indonesia. Fish rearing was carried out for 60 days. The results showed that the provision of guava leaves in the feed affected the blood glucose levels of carp. The dose of 1.5 g/100g feed (T2) was the optimal dose in increasing the blood glucose of carp reared in brackish water media and infected with A. hydrophila bacteria","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"54 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139279131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diversity and Abundance of Epiphytic Diatoms on Seagrass Leaves (Enhalus acoroides) in Poncan Gadang Island Sibolga City, North Sumatra 北苏门答腊西博尔加市庞坎加当岛海草叶片（Enhalus acoroides）上附生硅藻的多样性和丰度

Jurnal Natur Indonesia Pub Date : 2023-11-01 DOI: 10.31258/jnat.21.2.149-155

Dinda Trie K Hayati, S. H. Siregar, R. Rifardi

{"title":"Diversity and Abundance of Epiphytic Diatoms on Seagrass Leaves (Enhalus acoroides) in Poncan Gadang Island Sibolga City, North Sumatra","authors":"Dinda Trie K Hayati, S. H. Siregar, R. Rifardi","doi":"10.31258/jnat.21.2.149-155","DOIUrl":"https://doi.org/10.31258/jnat.21.2.149-155","url":null,"abstract":"The seagrass ecosystem is one of the marine ecosystems that has an important role, namely as a source of life for organisms in the sea. Diatoms are microalgae widely distributed throughout the aquatic environment and are even found in plants, including seagrass leaves. Diatoms greatly influence life in the waters because they play an essential role as a food source for various marine organisms and play a role in the transfer of carbon, nitrogen, and phosphate. This research was conducted in February 2023 on Poncan Gadang Island, Sibolga City, North Sumatra. The study aims to determine the density, relative abundance, abundance, and diversity of epiphytic diatom species on seagrass (Enhalus acoroides) leaves in Poncan Gadang Island. The method used is the survey method, using three stations to take samples. The determination of 3 stations is based on the density of the seagrass beds ecosystem. Sampling of diatoms was carried out by brushing the surface of seagrass leaves about 5x2 cm on the front and back of the leaves. The samples obtained were then analyzed in the laboratory. There were 12 types of diatoms found, consisting of Cocconeis sp., Rhizosolenia sp., Biddulphia sp., Amphipluera sp., Thalassiotrix sp., Nitzchia sp., Synedra sp., Melosira sp., Pleurogosigma sp., Skeletonema sp., Licmiphora sp., and Thalassionema sp. the average value of epiphytic diatom abundance in seagrass leaves ranged from 2160.85 – 4649.94 ind/cm². The epiphytic diatom diversity (H') values ranged from 2.53 to 2.72","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"2014 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139294913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stomatal Characteristics in Three Groups of Mangrove Plants: Major, Minor, and Associate 三类红树植物的气孔特征：主要红树植物、次要红树植物和辅助红树植物

Jurnal Natur Indonesia Pub Date : 2023-10-30 DOI: 10.31258/jnat.21.2.144-148

Febrina Artauli Siahaan, Dewi Lestari

{"title":"Stomatal Characteristics in Three Groups of Mangrove Plants: Major, Minor, and Associate","authors":"Febrina Artauli Siahaan, Dewi Lestari","doi":"10.31258/jnat.21.2.144-148","DOIUrl":"https://doi.org/10.31258/jnat.21.2.144-148","url":null,"abstract":"Three types of mangroves inhabit different environmental gradients and zones within the mangrove ecosystem. These three mangrove types exhibit distinct adaptation strategies. Stomata, as a crucial organ of the plant system, play a significant role in the adaptability of plants. Understanding stomata is essential for comprehending the physiological conditions and responses of plants to environmental conditions. This research aimed to study the stomatal characteristics of three different mangrove types and gain a deeper understanding of their potential adaptive strategies. This research was conducted at the Mangrove Botanical Garden Gunung Anyar, Surabaya, in November 2022. We selected two representative mangrove species from the major, associate, and minor types. Stomata of each mangrove species were observed to identify the stomatal type, density, and size using an Olympus microscope at 100 xs and 400 x magnifications. The results showed there were variations in stomatal type, density, and stomatal length and width among studied mangrove types. Major mangrove species exhibited the lowest stomatal density and the largest size of stomata compared to minor and associated mangroves. The diversity of stomatal traits among major, associate, and minor mangrove types underscores their adaptations and ecological strategies.","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"171 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139311402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inventory of Large Mammals in Ujung Kulon National Park, Banten Province 万丹省乌戎库隆国家公园大型哺乳动物清单

Jurnal Natur Indonesia Pub Date : 2023-10-30 DOI: 10.31258/jnat.21.2.134-143

Zulia Pratiwi, Diva Novi Sandrian, Ayu Octavia, Nisa Luthfiah, Riska Rahmawati, Silvia Riskina Said, Neneng Nuraliah

{"title":"Inventory of Large Mammals in Ujung Kulon National Park, Banten Province","authors":"Zulia Pratiwi, Diva Novi Sandrian, Ayu Octavia, Nisa Luthfiah, Riska Rahmawati, Silvia Riskina Said, Neneng Nuraliah","doi":"10.31258/jnat.21.2.134-143","DOIUrl":"https://doi.org/10.31258/jnat.21.2.134-143","url":null,"abstract":"The National Park has a diverse ecosystem for the preservation of flora and fauna, making Ujung Kulon National Park a habitat for endemic and protected fauna. Large mammals are one of the many animals found in TNUK, especially those with protected status. This study aims to determine the diversity of large mammal species in Ujung Kulon National Park. The research was conducted on September 27–29, 2022, in Ujung Kulon National Park, which is located at the western tip of Java Island, precisely in Sumur and Cimanggu Districts, Pandeglang Regency, Banten Province. The method used was the cruising method using exploratory descriptive data analysis. The results showed that there were two types of large mammals, namely ungulate mammals and primate mammals. The number obtained was 10 types of mammal species belonging to 7 different families. Large mammals found include Rhinoceros sondaicus, Muntiacus muntjak, Cervus timorensis, Hyolobates moloch, Presbytis comata, Trachypitecus auratus, Macaca fascicularis, Sus scrofa, Tragulus javanicus, and Bubalus bubalis. Most of the large mammals found are endemic mammals with protected status. Of the large mammals found, the most common were hoofed mammals. With this study, the public has an awareness of the importance of maintaining the diversity of fauna and flora in Ujung Kulon National Park","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139309678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of Gastropod Community Structure After Development of Tourism Activities on the Senjoyo River 森乔约河旅游活动开发后的腹足类群落结构研究

Jurnal Natur Indonesia Pub Date : 2023-10-30 DOI: 10.31258/jnat.21.2.124-133

Marsahanda Astri Ramagita, Sucahyo Sucahyo, Desti Christian Cahyaningrum

{"title":"Study of Gastropod Community Structure After Development of Tourism Activities on the Senjoyo River","authors":"Marsahanda Astri Ramagita, Sucahyo Sucahyo, Desti Christian Cahyaningrum","doi":"10.31258/jnat.21.2.124-133","DOIUrl":"https://doi.org/10.31258/jnat.21.2.124-133","url":null,"abstract":"It is thought that the development of the Senjoyo River as a tourist attraction in Semarang Regency will cause changes to the natural ecosystem in the area, one of which is changing the structure of the existing gastropod community. This research is a quantitative analysis research using a survey method that aims to examine the structure of the gastropod community after the development of tourism activities on the Senjoyo River. Gastropod samples were taken from 10 different observation stations along the Senjoyo River, which are located at 7˚22'23\"S and 110˚31'37\"E. Observation station locations were determined by the purposive random sampling method, based on tourism activity density. The result showed types of gastropods that were found in the Senjoyo River namely, Sulcospira testudinaria, Tarebia granifera, Brotia costula, Thiara scraba, and Melanoides tuberculata with clustered distribution patterns (Id>1). Statistical analysis showed that location affected gastropod abundance (Asymp. Sig of 0.043), with the highest abundance found at station seven (45,11 individuals/m2). So station seven, with sandy and muddy substrate conditions, moderate current speed (0.257 m/s), and rarely found human activity, is the most suitable location to support the survival of gastropods in the Senjoyo River. Furthermore, the gastropod community structure indicates environmental changes at observation stations nine and ten, the locations where the most activities and construction of tourism facilities were found. That was indicated by the low diversity (H’= 0.00-0.01) and evenness (E = 0.00) index of gastropods, and there is dominance by Sulcospira testudinaria (C= 0.98-1.00).","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139311291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pancreas Histology of Hyperglycemia of Mice (Mus musculus L.) After Treatment Basil (Ocimum x africanum Lour.) Leaf Extract and Papaya (Carica papaya L.) 罗勒（Ocimum x africanum Lour.）叶提取物和木瓜（Carica papaya L.）处理高血糖小鼠（Mus musculus L.）后的胰腺组织学研究

Jurnal Natur Indonesia Pub Date : 2023-10-26 DOI: 10.31258/jnat.21.2.118-123

Elsa Safitri, Sutyarso Sutyarso, Sri Wahyuningsih, R. Agustrina

{"title":"Pancreas Histology of Hyperglycemia of Mice (Mus musculus L.) After Treatment Basil (Ocimum x africanum Lour.) Leaf Extract and Papaya (Carica papaya L.)","authors":"Elsa Safitri, Sutyarso Sutyarso, Sri Wahyuningsih, R. Agustrina","doi":"10.31258/jnat.21.2.118-123","DOIUrl":"https://doi.org/10.31258/jnat.21.2.118-123","url":null,"abstract":"Hyperglycemia is a condition in which the level of glucose in the blood is abnormally high. Hyperglycemia is caused by disturbances in the metabolic system in secreting insulin. Hyperglycemia if left unchecked can cause a disease which is usually called diabetes. Basil (Ocimum x africanum Lour.) and papaya (Carica papaya L.) leaf extracts can reduce blood glucose levels in people with diabetes mellitus because they contain active compounds of flavonoids, alkaloids and tannins which function as anti-diabetics. The aim of this study was to examine the effectiveness of the effects of basil and papaya leaf in affecting the level of islet damage, and repairing pancreatic histological damage in hyperglycemic mice. This study used a completely randomized design with 5 treatment groups and 5 replications. Group K(N) as normal control, group K(+) as positive control, group K (-) as negative control, group P 1 (alloxan induced and treated with ethanol extract of basil leaves 24.5 mg/35g BW mice) 14 days oral) , P 2 group (induced by alloxan and treated with papaya leaf ethanol extract 24.5 mg/35 g BW mice (14 days oral). Data on the level of histological damage to the pancreas of hyperglycemic mice were analyzed using the Kruskal-Wallis method and the Wilcoxon-MannWhitney test at a significant level of 5%. Data histological appearance of the Langerhans were analyzed descriptively.The results showed basil leaf extract and papaya had an effect on the level of damage to the pancreas of mice, basil leaf extract was effective compared to papaya in histological repair of the mice pancreas","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139313369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimalization of Water for Nursery and Rearing of Asian Redtail Catfish (Mystus nemurus C.V) 优化亚洲红尾鲶鱼（Mystus nemurus C.V）的育苗和饲养水质

Jurnal Natur Indonesia Pub Date : 2023-10-24 DOI: 10.31258/jnat.21.2.109-117

Mulyadi Mulyadi, N. A. Pamukas

{"title":"Optimalization of Water for Nursery and Rearing of Asian Redtail Catfish (Mystus nemurus C.V)","authors":"Mulyadi Mulyadi, N. A. Pamukas","doi":"10.31258/jnat.21.2.109-117","DOIUrl":"https://doi.org/10.31258/jnat.21.2.109-117","url":null,"abstract":"Fish culture activities usually release wastes to environments such as faeces, urine, uneaten food and other by-product metabolism activities. For increased water quality, ideally in aquaculture media, various methods could be used, such as filtering techniques and sinking and dissolving methods. Various filter materials could be used to increase water quality, such as silt, gravel, charcoal, coconut shell, palm fiber, and zeoliteThe study on the effect of recirculation systems using various filter materials and aquaponic systems on water quality has been carried out. Several filter materials were used in four kinds of treatment, namely aquarium using aerators (control), aquarium using silt, gravels and palm fiber (recirculation), aquarium using mustard greens (aquaponic system) and aquarium using spoons (recirculation). The study results showed that different filter materials significantly affected nitrate and nitrite concentration in the catfish culture media. It was invented that the treatment of a recirculation system combined with an aquaponic system could increase water quality parameters such as CO2 (7.99 - 11.98 mg.L-1), NH3 (0.02 - 0.07 mg.L-1), NO2 (2.43 - 0.02 mg.L-1), NO3 (4.32 - 0.04 mg.L-1) respectively. Still, the other water quality parameters were similar. The best results were achieved at the same treatment, namely absolute growth rates (4.01 g), daily growth rates (1.96 %) and survival rates (91.11 %), respectively","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"735 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioremediation, Biosorption and Biodegradation of the Textile Dye Reactive Black 5 by Life Cultures of Trichoderma asperellum LBKURCC1 毛霉 LBKURCC1 生命培养物对纺织染料活性黑 5 的生物修复、生物吸附和生物降解作用

Jurnal Natur Indonesia Pub Date : 2023-10-18 DOI: 10.31258/jnat.21.2.93-99

Titania Tjandrawati Nugroho, Putri Nabilah, Nuria Wulandari, Y. Nurulita, A. Dahliaty, Yanti Yanti

{"title":"Bioremediation, Biosorption and Biodegradation of the Textile Dye Reactive Black 5 by Life Cultures of Trichoderma asperellum LBKURCC1","authors":"Titania Tjandrawati Nugroho, Putri Nabilah, Nuria Wulandari, Y. Nurulita, A. Dahliaty, Yanti Yanti","doi":"10.31258/jnat.21.2.93-99","DOIUrl":"https://doi.org/10.31258/jnat.21.2.93-99","url":null,"abstract":"Reactive black 5 (RB5) is an azo dye widely used in the textile industry for dyeing fabrics. It is categorized as a recalcitrant dye that is hard to degrade and an environmental pollutant. Therefore, textile waste effluents containing this dye must be treated to remove or degrade the dye, before being released into the environment. One method that can be used to degrade synthetic dyes such as RB5 is to use biological methods, by directly using live fungal cells or using laccase enzymes. Trichoderma asperellum LBKURCC1 is a filamentous fungus isolated from cacao plantation soil in Riau, Indonesia, and it is a laccase enzyme producer. To be able to determine the ability of T. asperellum LBKURCC1 life cultures to decolorize RB5 dye, several RB5 dye removal tests were carried out. Incubation of 50 ppm RB5 with life cultures of T. asperellum LBKURCC1 at room temperature (30°C, pH 6.5) for 24 hours resulted in 22% bioremediation, 3.2% biosorption and 19.1% biodegradation of the RB5 dye. The results of this study show that the live culture of T.asperellum LBKURCC1 is capable of biodegrading RB5. This is indicated by the degradation of RB5 by extracellular enzymes produced by these filamentous fungi.","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139317575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Different Substrates on Laboratory Scale Cultivation of Kappaphycus alvarezii 不同基质对实验室规模培养阿尔瓦雷茨卡帕藻的影响

Jurnal Natur Indonesia Pub Date : 2023-10-18 DOI: 10.31258/jnat.21.2.100-108

Muhammad Heri Hariadi, N. Cokrowati, Mukammad Marzuki

{"title":"The Effect of Different Substrates on Laboratory Scale Cultivation of Kappaphycus alvarezii","authors":"Muhammad Heri Hariadi, N. Cokrowati, Mukammad Marzuki","doi":"10.31258/jnat.21.2.100-108","DOIUrl":"https://doi.org/10.31258/jnat.21.2.100-108","url":null,"abstract":"Seaweed is a leading commodity in the Indonesian fisheries sector. Indonesia is the second largest seaweed-producing country in the world after China. K.alvarezii is a type of seaweed that produces kappa carrageenan which can be used as a raw material in industry, making K.alvarezii seaweed very popular for cultivation. Cultivation of K.alvarezii seaweed has developed widely in Indonesian waters. The success of cultivating K.alvarezii seaweed can be achieved if it is supported by a suitable environment for its growth. One of the environmental aspects that influences the growth of K.alvarezii seaweed is the bottom substrate of the waters. This research aims to analyze the best substrate for the survival rate of brown K.alvarezii seaweed cultivated on a laboratory scale. This research used an experimental method using a Completely Randomized Design (CRD) consisting of 4 treatments and each treatment was carried out 3 times to obtain 12 experimental units. The treatments tested were different substrates consisting of sand, coral, volcanic rock, and coral sand. The results of the research show that different types of substrate have a real influence on the survival rate of brown K.alvarezii seaweed cultivated on a laboratory scale. Coral substrate gave the best results with a survival rate of 100%, final weight of 20 g, and carrageenan yield value of 26%.","PeriodicalId":404489,"journal":{"name":"Jurnal Natur Indonesia","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139317154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0