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EVALUATION OF METHODS FOR TOTAL RNA EXTRACTION FROM THE ENDOSPERM OF COCOS NUCIFERA VAR. MAKAPUNO IN VIETNAM FOR MOLECULAR ANALYSIS 评估从越南椰子变种(Cocos nucifera var.用于分子分析的方法的评估
Biotropia Pub Date : 2023-12-07 DOI: 10.11598/btb.2023.30.3.2027
Thanh-Diem Nguyen, Huyen-Trang Vu
{"title":"EVALUATION OF METHODS FOR TOTAL RNA EXTRACTION FROM THE ENDOSPERM OF COCOS NUCIFERA VAR. MAKAPUNO IN VIETNAM FOR MOLECULAR ANALYSIS","authors":"Thanh-Diem Nguyen, Huyen-Trang Vu","doi":"10.11598/btb.2023.30.3.2027","DOIUrl":"https://doi.org/10.11598/btb.2023.30.3.2027","url":null,"abstract":"Sap coconut (Cocos nucifera L. var. makapuno) in Vietnam is a mutant coconut variant; coconut water is in the state of lotus glue, and coconut rice is like cream. For high-quality transcriptome, sequencing, quality, purity and concentration of RNA are the key factors. However, coconut endosperm tissue has higher stiffness and fatness than the leaf tissue, which complicates the extraction process. Moreover, RNA is much more difficult to preserve than DNA. In this study, various RNA extraction methods were examined in Vietnamese waxy coconut endosperm tissue samples. Optimum extraction and preservation of the RNA using the simplest possible chemicals was the objective of this study. The modified CTAB method with LiCl and the TRI reagent method were tested and evaluated. The purity, concentration and quality of RNA after storage were improved. The findings indicated that the TRIsure extraction method with the addition of NaCl and β-mercaptoethanol yielded optimum RNA quality. The RNA concentration was 159 ng/µL, with a purity ratio of 1.94 ± 0.04 for A260/A280 and 1.58 ± 0.02 for A260/230. RNA samples remained stable for up to 3 weeks when stored in absolute ethanol at 8°C–10°C, which significantly reduced their degradation during transportation. This study facilitated the use of simple chemicals for high-quality RNA extraction from coconut endosperm and its preservation for applications in high throughput sequencing.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"56 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138593357","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
NUTRIENT PROFILE BLACK SOLDIER FLY LARVAE (HERMETIA ILLUCENS): EFFECT OF FEEDING SUBSTRATE AND HARVESTED TIME 黑翅飞虱幼虫(hermetia illucens)的营养状况:饲喂基质和收获时间的影响
Biotropia Pub Date : 2023-12-07 DOI: 10.11598/btb.2023.30.3.1903
M. R. Weko, Frederius Bao, Maria E. Ega, Hendrika Mia, K. S. I. Una, Marcelina Viana, Lodovikus Wale, C. L. Nalle, Yacob M. Burithnaban, Abner T. Lema, Helda, Asrul
{"title":"NUTRIENT PROFILE BLACK SOLDIER FLY LARVAE (HERMETIA ILLUCENS): EFFECT OF FEEDING SUBSTRATE AND HARVESTED TIME","authors":"M. R. Weko, Frederius Bao, Maria E. Ega, Hendrika Mia, K. S. I. Una, Marcelina Viana, Lodovikus Wale, C. L. Nalle, Yacob M. Burithnaban, Abner T. Lema, Helda, Asrul","doi":"10.11598/btb.2023.30.3.1903","DOIUrl":"https://doi.org/10.11598/btb.2023.30.3.1903","url":null,"abstract":"The objective of this study was to asses the effect of different feeding substrates (FS), harvesting times (HT), and the interaction between FS and HT on the chemical composition of black soldier fly larvae (BSFL). The experiment used a 4 x 2 factorial arrangement with two main factors, FS (T1, T2, T3, T4), and HT (15-d and 20-d). Thus, there were eight treatment combinations, all together with five replications. The results show that there was no interaction (P>0.05) between FS and HT on dry matter (DM), crude protein (CP), crude lipid (CL), phosphorus (P), gross energy (GE), and amino acid contents. The ash content of BSFL grown on T2 media and harvested on day 15 was higher (P<0.05) than those grown on T2 media and harvested on day 20. The calcium (Ca) content of BSFL grown on all media and harvested on day 20 was higher (P<0.05) than those harvested on day 15. In conclusion, combining fruit wastes and tofu by-products produced BSFL with high CP content but low CL, ash, Ca, and P contents. In addition, BSFL grown on all substrates media and harvested on day 15 had better CP, Ca, and P contents. The dispensable amino acid of BSFLs fed with T3 diets was the best. The lowest body weight gain was produced by feeding a substrate containing a high percentage of rice bran. The findings indicate that the best nutrient composition of BSFL as animal feed would be achieved in early harvest time (15-d) and grown in heterogeneous feeding substrates.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"20 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138592726","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
Orangutan (Pongo pygmaeus ssp. wurmbii) ranging pattern in Punggualas, Sebangau National Park, Central Kalimantan Indonesia 印度尼西亚中加里曼丹 Sebangau 国家公园 Punggualas 的红毛猩猩(Pongo pygmaeus ssp. wurmbii)分布模式
Biotropia Pub Date : 2023-12-07 DOI: 10.11598/btb.2023.30.3.1901
Adventus Panda, Ari Meididit, Okta Simon, W. Artama, Dwi Priyowidodo, T. Djohan
{"title":"Orangutan (Pongo pygmaeus ssp. wurmbii) ranging pattern in Punggualas, Sebangau National Park, Central Kalimantan Indonesia","authors":"Adventus Panda, Ari Meididit, Okta Simon, W. Artama, Dwi Priyowidodo, T. Djohan","doi":"10.11598/btb.2023.30.3.1901","DOIUrl":"https://doi.org/10.11598/btb.2023.30.3.1901","url":null,"abstract":"Punggualas lies in the western part of Sebangau National Park (SNP). It is a logged-over forest, yet it is one of the major strongholds for the P. p. wurmbii population in the SNP. The range size, as well as the ranging pattern for Punggualas, has never been conducted. The study aimed to estimate orangutan ranging size and pattern as well as their distribution over the Punggualas forest. Ranging data within the area of interest (AOI) was collected from Feb 2015 – Dec 2019 (P1), and Mar 2020 – May 2022 (P2). Minimum convex polygon (MCP), range size of orangutan individual was calculated using adehabitatHR package in RStudio 4.1.1 for Windows. We visualized the distribution in ArcGIS 10.5 with Kernel Density (KD) tool.   The range size of Mother-Infant is the greatest (259,6 Ha) among all individuals being studied within the study periods. Moreover, the size estimation was found greater in Mother-Infant sex class compared to other orangutan studies areas, such as Peat Natural Laboratory, and CIMTROP-UPR which reported a flanged male HR Size reaching 250 Ha per annum. We have found that the ranging pattern significantly changes over the study period. However, during P1, the distribution area was located within the northern of AOI, while in the P2 have changed to the south-eastern part of the AOI.  We concluded that the ranging pattern indeed follows the fruit availability as well as fine-scale habitat quality.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"31 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138594445","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 CHEMICAL CHARACTERISTICS OF ARABICA AND ROBUSTA GREEN COFFEE BEANS FROM GEOPARK RINJANI, INDONESIA 印度尼西亚林贾尼地质公园阿拉比卡和罗布斯塔绿咖啡豆的化学特征
Biotropia Pub Date : 2023-12-07 DOI: 10.11598/btb.2023.30.3.1940
Zainuri, Dewa Nyoman, Adi Paramartha, Amira Fatinah, Rini Nofrida, Novia Rahayu, Ines Marisya, Dwi Anggraini, Qabul Dinanta Utama
{"title":"THE CHEMICAL CHARACTERISTICS OF ARABICA AND ROBUSTA GREEN COFFEE BEANS FROM GEOPARK RINJANI, INDONESIA","authors":"Zainuri, Dewa Nyoman, Adi Paramartha, Amira Fatinah, Rini Nofrida, Novia Rahayu, Ines Marisya, Dwi Anggraini, Qabul Dinanta Utama","doi":"10.11598/btb.2023.30.3.1940","DOIUrl":"https://doi.org/10.11598/btb.2023.30.3.1940","url":null,"abstract":"Green coffee beans are also called unroasted coffee beans. The chemical composition of green coffee beans plays a vital role in determining the final product’s aroma. The main objective of this research was to characterize the chemical properties of Arabica and Robusta green coffee beans grown in different regions of Geopark Rinjani, Lombok Island, Indonesia. The water, ash, protein, carbohydrate, total solids, and caffeine contents, total acidity, and pH were determined. Data were analyzed by analysis of variance. The results revealed significant differences in the moisture contents of Arabica beans from Sembalun, Sajang, and Sapit and Robusta beans from Rempek, Selelos, and Genggelang. Additionally, the ash contents of Arabica Sajang and Arabica Sapit showed notable differences compared to other samples. However, the total fat contents of Arabica Sajang, Arabica Sapit, Robusta Rempek, and Robusta Genggelang did not exhibit significant variations. On the other hand, significant differences were observed in the protein contents of all samples, particularly between Arabica Sembalun and Arabica Sapit, compared to Arabica Sajang, Robusta Rempek, Robusta Genggelang, and Robusta Selelos. Robusta coffee beans appeared to have a slightly lower pH than Arabica beans. The latter exhibited consistent acidity in the range of 0.20–0.21, whereas the former showed higher acidity levels (0.23–0.25). Arabica beans had a lower caffeine content, averaging 1.09%, whereas Robusta beans exhibited an average caffeine content of 2.09%. This research provides valuable insights into the chemical composition of green coffee beans from different species and locations within Geopark Rinjani, contributing to a better understanding of the factors influencing the aroma and quality of coffee.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"116 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138590484","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
FURTHER STUDY ON TWO SPECIES OF LOACH FISHES (Cypriniformes: Nemacheilidae: Nemacheilus) BASED ON MORPHOLOGY AND MOLECULAR DATA 两种泥鳅鱼(鲤形目:泥鳅科:泥鳅科)形态和分子资料的进一步研究
Biotropia Pub Date : 2023-08-03 DOI: 10.11598/btb.2023.30.2.1942
D. Rahayu
{"title":"FURTHER STUDY ON TWO SPECIES OF LOACH FISHES (Cypriniformes: Nemacheilidae: Nemacheilus) BASED ON MORPHOLOGY AND MOLECULAR DATA","authors":"D. Rahayu","doi":"10.11598/btb.2023.30.2.1942","DOIUrl":"https://doi.org/10.11598/btb.2023.30.2.1942","url":null,"abstract":"The identity of two local loaches, Nemacheilus chrysolaimos (Valenciennes, 1846) and N. fasciatus (Valenciennes, 1846), is revealed in this study using morphology and molecular approach based on our collection from six rivers at Biltar, East Java Indonesia. Based on morphology, these two species can be distinguished mainly from the dark bars or dark spots on the lateral body. The meristic data for N. chrysolaimos in this study is DII. 7–8 (dorsal fin), AI. 3–5 (anal fin), PI. 9 (pectoral fin), VI. 6–7 (ventral fin) and C. 17 (caudal fin), meanwhile, for N. fasciatus with D II 7–8 (dorsal fin), AI. 6 (anal fin), PI. 9–10 (pectoral fin), VI. 6–7 (ventral fin) and C. 17 (audal fin). There was a significant difference on the morphometric of N. fasciatus form sampling sites using Kruskal-Wallis Test. The nucleotide base composition sequences consisted of the mean of Thiamine (T) 29.565%, Cytosine (C) 32.023%, Adenine (A)  23.88%, and Guanine (G) 16.244%. Maximum Likelihood (ML) and Neighbour Joining (NJ) analysis was conducted using the Kimura 2 Parameter model to establish two major clades on Nemacheilus spp. and one out-groups clades significantly different from the Nemacheilus spp. These major  clades  were  closely related  to  each  other  at  the  100%  evidence of  bootstrap, which  grouped  as  genus Nemacheilus. The  present  study  on Nemacheilus spp.  from the Blitar  locality  was  able  to  differentiate  COI  sequences between N. fasciatus and N. chrysolaimos. Moreover, N. crysolaimos from references sequence  was inferred as the ancestor to N crysolaimos MZB 26540 and MZB 26539. ABGD analyses at a prior maximal distance of 0.025 also delineated this species into a separate partition.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80652496","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
REMOVAL EFFICIENCY OF NITROGEN, PHOSPHORUS AND HEAVY METALS ASSOCIATED WITH SWINE WASTEWATER USING AQUATIC MACROPHYTES 水生植物对养猪废水中氮、磷及重金属的去除效果
Biotropia Pub Date : 2023-08-01 DOI: 10.11598/btb.2023.30.2.1038
C. T. Nguyen, Ha Van Nguyen
{"title":"REMOVAL EFFICIENCY OF NITROGEN, PHOSPHORUS AND HEAVY METALS ASSOCIATED WITH SWINE WASTEWATER USING AQUATIC MACROPHYTES","authors":"C. T. Nguyen, Ha Van Nguyen","doi":"10.11598/btb.2023.30.2.1038","DOIUrl":"https://doi.org/10.11598/btb.2023.30.2.1038","url":null,"abstract":"Wastes from breeding farms have globally increased greenhouse gases and caused a serious pollution to aquatic environments. Biogas treatment polymer bags could significantly reduce organic compounds; however, they could not effectively treat other pollutants in animal wastewater. The objective of this study was to assess removal efficiency of salinity and pollutants associated with pig wastewater using aquatic macrophytes. Four macrophytes namely Acrotichum aureum, Eleocharis dulcis, Typha domengensis, and Limnophyton obtusifolium and a soil control without vegetation were randomly assigned into fifteen mesocosms (1.2 x 0.7 x 0.6m) with 3 replicates for each treatment. Pig wastewater was filled continuously into input chambers of mesocosms in every three day with 5 liters. Water samples were collected from output chambers with 60 and 120 days after treatment while soil and vegetation samples were collected at the beginning and the end of the experiment. The results showed that E. dulcis, T. domengensis, and L. obtusifolium were dominant in removal of N, P, Cu and Zn and suspended solids as well; E. dulcis and T. domengensis significantly increased the dissolved oxygen; whereas the treatment ofL. obtusifolium species showed the best efficiency in salt-ion removal. Pollutants of N, P, Cu and Zn tend to accumulate more in the macrophyte roots than in their leaves. Accumulation of N, P, Cu and Zn in theL. obtusifolium’s biomass is the highest compared with other treatments. From findings, it is suggested that a combination of three aquatic macrophytes including E. dulcis, T. domengensis, and L. obtusifolium could establish a constructed wetland system to directly treat pollutants of livestock wastewaters","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88238979","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
MOLECULAR CHARACTERIZATION OF Aspergillus flavus TOXIGENICITY IN AGRICULTURAL COMMODITIES IN INDONESIA 印尼农产品中黄曲霉毒力的分子特征
Biotropia Pub Date : 2023-08-01 DOI: 10.11598/btb.2023.30.2.1842
Anidah, W. P. Rahayu, S. Nurjanah, I. Retnowati
{"title":"MOLECULAR CHARACTERIZATION OF Aspergillus flavus TOXIGENICITY IN AGRICULTURAL COMMODITIES IN INDONESIA","authors":"Anidah, W. P. Rahayu, S. Nurjanah, I. Retnowati","doi":"10.11598/btb.2023.30.2.1842","DOIUrl":"https://doi.org/10.11598/btb.2023.30.2.1842","url":null,"abstract":"Toxigenic Aspergillus flavus is a primary producer of aflatoxin in Indonesia, and its presence can lead to the contamination of agricultural commodities. This contamination poses a risk to export-targeted commodities, potentially resulting in their rejection. Therefore, this study aims to characterize the molecular profile of nativeA. flavus isolated from several Indonesian agricultural products, with a major focus on its toxigenicity and toxin production. A total of 18 A. flavus collections were isolated from nutmeg, ground peanut, cacao, coffee bean, corn, white pepper, and soil peanut plantation. Species identification was carried out using molecular and morphological approaches. The toxigenicity of isolates was characterized based on the amplification of aflatoxin gene clusters, while toxin production was assessed through growth simulation on a 10% coconut broth media followed by HPLC quantification. The result showed that all isolates were confirmed as A. flavus based on the morphological and sequence analysis of the ITS region. A total of 11 isolates (61%) were confirmed as toxigenic and produced 1-2 types of aflatoxin, in varying concentrations of high, moderate, or low levels of AFB1. High levels of AFB1 produced by seven isolates namely BIO3313, BIO33212, BIO3361, BIO33404, BIO3338, BIO3352, and BIO3344, had concentration levels ranging from 76.78 to 2241.06 µg/kg, while three isolates (BIO3314, BIO3312, and BIO3381) produced AFB1 below 1 µg/kg. Twenty-nine pairs of aflatoxin gene-specific sequences were successfully amplified as a single band, while some produced non-specific patterns in several low toxigenic and non-toxigenic isolates. Based on the results, it was concluded that completed gene clusters and variations of gene deletion were observed in both toxigenic and non-toxigenic isolates. However, no specific target gene could effectively distinguish the two groups. Two non-toxigenic isolates namely BIO3393 and BIO33403 exhibited a large deletion and could be potential candidates for biocontrol agents.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86493292","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
ELASTICITY ANALYSIS OF THE GRAZING AND DETRITAL PATHWAYS IN A SHALLOW PHILIPPINE SEAGRASS MEADOW 菲律宾浅层海草草甸放牧与碎屑路径的弹性分析
Biotropia Pub Date : 2023-08-01 DOI: 10.11598/btb.2023.30.2.1654
Michael A. Clores
{"title":"ELASTICITY ANALYSIS OF THE GRAZING AND DETRITAL PATHWAYS IN A SHALLOW PHILIPPINE SEAGRASS MEADOW","authors":"Michael A. Clores","doi":"10.11598/btb.2023.30.2.1654","DOIUrl":"https://doi.org/10.11598/btb.2023.30.2.1654","url":null,"abstract":"Ecotrophic efficiency (EE) is an estimate of the proportion of production that is utilized by the next trophic level through direct predation or fishing or exported out of the ecosystem. In seagrass systems, analysis of EE provides crucial information on how biomass, when used or lost in biological functioning, affects the higher trophic levels via death or grazing relative to the energy lost via decomposition (i.e., Flow to the detritus, FTD) and exports to another ecosystem (i.e., Sum of all exports, SAE). In this study, projections on the effect of change in the EE of functional groups in seagrass systems due to the alteration of biomass were established heuristically using Elasticity Analysis. Using a previously constructed Ecopath model for a shallow Philippine seagrass meadow, the simulations of altering the biomass of seagrasses and their grazers were done to determine the change in EE, FTD, and SAE, thereby generating information on the dynamics of the grazing and detrital pathways in the seagrass ecosystem. Results showed the effects of biomass increase and decrease of grazers (herbivorous gastropods, Tripneustes gratilla, and polychaetes). If the grazers’ biomass increases, their EE tends to decrease, and biomass accumulation tends to increase. This implies that a fraction of their production used in the system is reduced even if their predators' density and feeding rate are still constant. In addition, the EE of seagrasses tends to increase, leading to a decrease in biomass accumulation at the primary producers’ trophic level. Lastly, the EE of detritus decreased because the FTD and SAE of its major contributors (the seagrasses) had also decreased. The findings contribute to the ongoing analysis of the role of herbivores versus detritivores in the energetics of seagrass habitats.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"83 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82863465","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
SPATIAL DISTRIBUTION OF INVASIVE PLANTS IN BANDUNG, WEST JAVA, INDONESIA 印度尼西亚西爪哇万隆入侵植物的空间分布
Biotropia Pub Date : 2023-08-01 DOI: 10.11598/btb.2023.30.2.1780
R. Rahmawati, D. Rosleine
{"title":"SPATIAL DISTRIBUTION OF INVASIVE PLANTS IN BANDUNG, WEST JAVA, INDONESIA","authors":"R. Rahmawati, D. Rosleine","doi":"10.11598/btb.2023.30.2.1780","DOIUrl":"https://doi.org/10.11598/btb.2023.30.2.1780","url":null,"abstract":"The urban area is a source of invasive plants that enter through human activities such as agriculture and land-use conversion. Studying the invasive plant in urban areas is essential to understanding the city’s ecosystem health condition. Therefore, this study aims to inventory invasive plants, map their distribution, and explain the relationship between land use with the community diversity and species richness of invasive plants in Bandung. The vegetation analysis was performed using line-transect in 22 study sites distributed using a systematic random sampling method in Bandung to observe the plant species composition. The study plots were placed based on the land-use type. The species name, individual number, frequency, and sampling site locations were noted and analyzed to calculate the important value index (IVI) and the invasive species distribution pattern using the principal component analysis (PCA). The dominant invasive species was spatially mapped. Six types of land use were used in this study, i.e., settlements, street green lanes, gardens, paddy fields, urban parks, and urban forests. There were 187 species found in Bandung, which can be categorized into alien invasive species (39%), invasive native plants (25%), non-invasive alien species (18%), non-invasive native species (15%), and unidentified plants (3%). The most common invasive plants found were Eleusine indica (IVI=10.50%), Trimezia martinicensis (IVI=7.22%), and Cyperus rotundus (IVI=6.74%). Based on the plant community similarity index, the study area with the highest similarities were paddy fields with gardens (50.5%), settlements with road lanes (44.4%), urban parks with road lanes (26.2%), and urban forests with road lane (17.5%). PCA showed Swietenia macrophylla as the most common invasive plant found in urban forests, urban parks, and road lanes, with air humidity as the most influencing environmental factor. Trimezia martinicensis is the most common species in the settlement area affected by high air humidity. Bidens pilosa is an invasive plant commonly found on paddy fields, gardens, settlements, road lanes, and urban park edges. This species can easily and rapidly reproduce with a high survival rate. The many invasive plants found in Bandung must be managed to maintain the urban ecosystem’s health.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"174 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76646366","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
USE OF BIOLOGICAL ORGANIC FERTILIZERS AND PESTICIDES TO IMPROVE POTATO CULTIVATION IN SLOPE ANDISOLS 利用生物有机肥和农药改善坡地马铃薯栽培
Biotropia Pub Date : 2023-08-01 DOI: 10.11598/btb.2023.30.2.1902
Tamad, Loekas Soetanto, Akhmad Rizqul Karim
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