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All Journal BAREKENG: Jurnal Ilmu Matematika dan Terapan Bio-Lectura Bioscientist : Jurnal Ilmiah Biologi Agrikan: Jurnal Agribisnis Perikanan
Cornelia Dolfina Maatoke
Universitas Halmahera
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Potensi Rhizobakteri Tanaman Jahe Merah (Zingiber officinale Linn. Var Rubrum) di Kabupaten Halmahera Utara sebagai Agen Pemacu Pertumbuhan Tanaman Cornelia Dolfina Maatoke; Oktovianus Oktovianus
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i1.7047

Abstract

Rhizobacteria are a type of bacteria that live in the area of plant roots, these bacteria are able to have a positive influence on plant growth. Various bacteria that have the potential to promote plant growth are thought to be in the red ginger root area. The purpose of this study was to determine the ability of red ginger rhizobacteria in dissolving phosphate, nitrogen fixing, IAA production and the effect of the rhizobacterial treatment on seed viability. The research was conducted at the Laboratory of MIPA Terpadu, Halmahera University, and further analysis at the Microbiology Laboratory, Bogor Agricultural University. Soil sampling at six locations, namely: Gosoma, Kusuri, Pitu, Ruko, Wari, and WKO villages. The research method used included the stages of sampling by purposive sampling, selection and characterization stages as well as potential test stages for rhizobacterial treatment on seed growth. The results showed that rhizobacteria with isolate code Rk. 3.1., Rk. 3.2., Rk. 3.3., and Rk. 3.4., was able to dissolve phosphate by 5.46 mm, 5.49 mm, 4.60 mm, and 3.18 mm, fixing nitrogen by 1289.50 µmol. m-1g1., 1329.47 µmol. m-1g1., 418.25 µmol. m-1g1., and 388.15 µmol. m-1g1., produced IAA growth hormone of 33.80 ppm, 35.72 ppm, 20.52 ppm, and 25.74 ppm, and had a significant effect on the growth of germination, growth simultaneity, maximum growth potential, and seed vigor index. Based on this study, it can be concluded that the isolates Rk. 3.1., Rk. 3.2., Rk. 3.3., and Rk. 3.4., can be used as plant growth promoting biological agents.
KARAKTERISASI MORFOLOGI DAN FISIOLOGI MIKROB PELARUT FOSFAT DAN MIKROB PENAMBAT N2 (AZOTOBACTER) DARI RHIZOSFER TANAMAN PADI DAN TANAH HUTAN CIFOR DRAMAGA BOGOR Maatoke, Cornelia Dolfina; Dewani, Zahriska; Suciati, Fuzi
Bio-Lectura : Jurnal Pendidikan Biologi Vol. 11 No. 1 (2024)
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/bl.v11i1.19518

Abstract

This study aims to determine the morphological and physiological properties of Phosphate Solubilizing Microbes (MPF) and Azotobacter. The method used was to test morphological properties using gram staining and physiological properties tests using biochemical tests based on cell activity by looking at the interaction of bacterial metabolism with the test reagent media. Data analysis examined the reaction to the isolated morphological and physiological test media. The results showed that based on the morphological observations of the MPF, the colonies showed a slightly milky white color, round, convex, slimy shape, 1-2 mm in diameter and flattened, and Gram-positive. Azotobacter shows the characteristics of transparent color, convex, flat edges, slightly slimy, an average diameter of 1 mm, and is Gram-negative; whereas based on the results of physiological test observations for catalase and oxidation tests, the characteristic of MPF and Azotobacter, each showed a positive (+) effect, as seen from the formation of bubbles in the test results. Tests for motility and O2 requirements show that both bacteria are motile, mobile and aerobic or require oxygen for growth. The observations of resistance in the pH range showed that Azotobacter was more resistant to extreme acid-base pH with a pH range of 3-9, while MPF could only survive in a pH range of 5-9. Tests of glucose and sucrose fermentation showed that MPF did not form gas bubbles (-) and no color change(-). At the same time, Azotobacter showed the formation of gas bubbles (+) but no color change (-).
Karakterisasi dan Identifikasi Rhizobakteri Asal Mangrove Tanjung Pilawang sebagai Biokontrol dan Agen Hayati Pertumbuhan Tanaman Maatoke, Cornelia Dolfina; Gisisi, Deiby Elsa; Girsang, Yusi Firdawati
Bioscientist : Jurnal Ilmiah Biologi Vol 12, No 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.10133

Abstract

Rhizobacteria are a type of microbe that has an important role in providing nutrients to plants. Rhizobacteria live in symbiosis with plant roots, where their activity has a significant influence on plant growth and development. Various microbes that have the potential to stimulate plant growth are thought to reside in mangrove root areas. The aim of this research is to determine the type of rhizobacteria of the Tanjung Pilawang mangrove, Gura Village, Tobelo District, North Halmahera Regency which is capable of inhibiting the growth of the fungus Collectotricum capsici and dissolving phosphate to be used as a biocontrol and biological agent for plant growth. The research methods used include the isolation stage, selection and characterization stages, and identification stages. The results of the research showed that 11 isolates of rhizobacteria were isolated from Tanjung Pilawang mangrove soil, of these 11 isolates there were two isolates that had the potential to inhibit the growth of the pathogenic fungus Colletotricum capsici and were able to dissolve phosphate, where each isolate was able to provide a Dissolution Index (IP) value. the highest is 2.85 mm and 1.91 mm. After identification, the two isolates were identified as Bacillus subtilis (RTM 10) and Pseudomonas sp (RTM 06), so that these two bacteria have potential as biocontrol and biological agents for plant growth.
Assessment of the Welfare of Communities Managing the Mount Hamiding protected forest on Halmahera Island North Maluku, Indonesia Kailola, Jacob; Maatoke, Cornelia Dolfina
Agrikan Jurnal Agribisnis Perikanan Vol. 17 No. 2 (2024): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v17i2.2355

Abstract

The Mount Hamiding protected forest is located in North Halmahera district, North Maluku Province, Indonesia, which has high biodiversity but has not been managed optimally. In general, the study shows that communities around forest areas have low incomes. However, actual data regarding community welfare at the location level is unavailable. This research aims to assess the level of community welfare and income distribution in protected forest management. The methods used in this research are descriptive qualitative, quantitative. Data collection was carried out through observation, interviews, and literature study. Analysis of the level of community welfare refers to Sayogjo and inequality is measured using the Lorenz curve. The welfare level variable is determined using non-parametric chi-square statistical analysis. The research results show that people still live below the poverty line, and the average per capita income is IDR 3,913,255/year, the Gini Ratio is 0.3 in the low category. Community characteristics: education, number of dependents, distance from house to forest, income, and length of residence have a significant effect on welfare. Meanwhile, age, occupation, and land area do not have a significant effect. To improve community welfare, multi-party collaboration is needed for training and community empowerment activities.
Nest Success of Semi-Natural Hatching Program for Moluccan Scrubfowl (Eulipoa wallacei) in Mamuya Village, North Halmahera Regency Boleu, Fiktor Imanuel; Simanjuntak, Radios; Tuny, Margaretha Tabita; Kailola, Jacob; Lewerissa, Ebedly; Ganna, Melisa Angela; Sudrajat, Tania Ayu; Maatoke, Cornelia Dolfina; Manik, Eppi
Agrikan Jurnal Agribisnis Perikanan Vol. 17 No. 2 (2024): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v17i2.2377

Abstract

Protecting the nesting habitat of the Moluccan Scrubfowl (Eulipoa wallacei) is important to conserve the population of this endemic species in North Maluku. The success rate of semi-natural hatching nests of Moluccan Scrubfowl varies in each hatchery conservation location. This study aims to determine the nest success of semi-natural hatching program of Moluccan Scrubfowl in Mamuya Village, North Halmahera Regency. A field experiment approach was used to estimate nest success in semi-natural (in-situ) incubation treatments. Eggs used for the semi-natural hatching treatment were collected from landowner egg collecting activities at four Moluccan Scrubfowl nesting sites. In semi-natural hatching, each bird egg was placed in 60 cm of sand with a minimum distance of 10 cm between eggs (egg density adjusted to the number of eggs planted). A total of 116 Moluccan Scrubfowl eggs were planted over four planting periods and during the natural incubation period the eggs hatched producing 96 chicks. The nest success of the semi-natural hatching program for Moluccan Scrubfowl in Mamuya Village has a high success value of 0,835 (83,52%). This optimal success indicates that incubation in the chick embryo formation process is stable on the sand substrate. The mean incubation time interval for hatching eggs lasted 74 days (interval 72 - 76 days)
Biophysical Characteristics of the Mount Hamiding Protected Forest Area and Forest Engineering for Sustainability Maatoke, Cornelia Dolfina; Kailola, Jacob
Agrikan Jurnal Agribisnis Perikanan Vol. 18 No. 1 (2025): Agrikan: Jurnal Agribisnis Perikanan
Publisher : Fakultas Pertanian, Universitas Muhammadiyah Maluku Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52046/agrikan.v18i1.2536

Abstract

The purpose of this study was to determine the biophysical conditions of the protected forest area of Mount Hamiding: soil, slope, climate and sustainable management strategies. The method used in this study is a descriptive method with a qualitative-quantitative approach. Data collection techniques were carried out using observation, interview and literature study techniques. The results of the study showed that the biophysical conditions of the protected forest area of Mount Hamiding have slopes from flat to steep, entisol soil types which are newly formed soils with physical and chemical soil properties, while the climate type in the protected forest area is based on climate A and B. Forest and soil damage caused by anthropogenic activities, namely clearing forests to expand agricultural and plantation areas, and illegal logging. Based on this phenomenon, the strategic efforts made to manage forests sustainably, namely to improve the physical and chemical conditions of the soil, are through forest rehabilitation activities with an agroforestry model that aims to improve ecological functions and community welfare because this pattern is a form of product diversification and provides ecological functions for the environment.
VISIT PROFILES AND TOURISM DESTINATION THRESHOLDS USING POLYNOMIAL AND MALTHUSIAN Dalengkade, Mario Nikolaus; Kaseside, Meidy; Maatoke, Cornelia Dolfina; Boleu, Fiktor Imanuel; Buka, Oktosea; Loklomin, Samsul Bahri; Mangimbulude, Jubhar Christian
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 16 No 1 (2022): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (650.581 KB) | DOI: 10.30598/barekengvol16iss1pp113-120

Abstract

Kumo, Kupa-Kupa, Pitu, and Luari beaches are tourist destinations that are always crowded with local and foreign tourists. This becomes interesting, because recently the problem of human population density in an area has become a hot topic for study. Using the polynomial method, it resulted in 6th order with R2 0.950 (Kumo), 0.868 (Kupa-Kupa), 0.799 (Pitu), and 0.399 (Luari) representing the distribution of visits. The highest levels of visits occurred in the twelfth, fifth, fourth, and sixth months, respectively. The analysis by applying the logistics function shows the highest level of visits throughout 2018 which are Kumo 283.95 tourists, Kupa-Kupa 342.12 tourists, Pitu 81.77 tourists and, Luari 1088.35 tourists. Based on the threshold analysis, the threshold value shows 255.56 tourists (Kumo), 297.08 tourists (Kupa-Kupa), 65.58 tourists (Pitu), and 836.42 tourists (Luari). The results of this study inform the level of tourist visits exceeding the threshold value in four tourist destinations. Given that the four tourist destinations carry the concept of ecology as a selling point, the manager needs to reorganize the level of tourist visits. Excess levels of tourist arrivals can have a negative impact on the comfort and sustainability of tourist destinations
Co-Authors Boleu, Fiktor Imanuel Buka, Oktosea Dalengkade, Mario Nikolaus Dewani, Zahriska Ganna, Melisa Angela Girsang, Yusi Firdawati Gisisi, Deiby Elsa Kailola, Jacob Kaseside, Meidy Lewerissa, Yanti Amelia Loklomin, Samsul Bahri Mangimbulude, Jubhar Christian Manik, Eppi Oktovianus Oktovianus Simanjuntak, Radios Suciati, Fuzi Sudrajat, Tania Ayu Tuny, Margaretha Tabita