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All Journal EUGENIA Jurnal Ilmiah Sains AGRI-SOSIOEKONOMI Silvarum COCOS Jurnal Lentera: Penelitian dan Pengabdian Masyarakat
Josephus I. Kalangi
Program Studi Kehutanan, Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Economics, Econometrics & Finance Environmental Science Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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PENGARUH BEBERAPA JENIS PAKAN TANAMAN KEHUTANAN TERHADAP KUALITAS DAN KUANTITAS KOKON ULAT SUTERA EMAS (Cricula trifenestrata Helf) Hartono .; Terry M. Frans; Josephus I. Kalangi
COCOS Vol. 7 No. 5 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i5.13765

Abstract

ABSTRACTTHE INFLUENCE OF SOME KIND OF FORESTRY FEED PLANTS TO THEQUALITY AND QUANTITY OF Cricula trifenestrata Helf COCOONSThe research aims to look at the influence of some types on liking of forestry plantsfeed (preference), life cycle, and the quantity and quality of gold silkworm cocoons C.Trifenestrata. This research was conducted from July to October 2015. Data collection wasperformed by the method of completely randomized design (CRD). Data collection wasperformed by completely randomized design (CRD) method.Specifically to see the effect on the quantity of cocoon, research using the completelyrandomized design (CRD) method. Observation is done by counting the number of larvae oneach type of feed. Data were analyzed to find the value of the average percentage for eachtype of feed.The results showed that avocado feed into the main host of C. trifenestrata forpreferred and easy to digest, and provide the best effect against the liking (preference) that is: 24.5%, while eating cinnamon lower than the avocado feed 22.2%, compared to eatingavocado and cinnamon Nantu feed have a lower preference level that is 19.2%, a lower levelcompared to eating avocado, cinnamon, Nantu feed, indicated by the cempaka feed that is17.7%, while feed with the lowest preference level is mahogany feed with 16.7%. TheAverage of long life cycle of insects that are kept on each type of feed as the host,respectively : Cempaka (61,7 days), Mahogany ( 55,9 days), Nantu (49,3 days), Avocado(72,3 days), dan Cinnamon (64,7 days). Avocado feed give the best effect on the quantity ofcocoons prodeced, that is: cocoons weight (95,56 g), heavy leather cocoons (13,9 g), andpercentage cocoons leather (27,07 g). Avocado feed give the best effect on the quality ofcocoon formed (shape and cocoons colour)Keyword : Liking research (preference), Cricula trifenestrata Helf, wood.
KENYAMANAN TERMAL RUANG TERBUKA HIJAU DI KAMPUS UNSRAT BERDASARKAN PERSEPSI PENGUNJUNG Prestin Babo; Fabiola B. Saroinsong; Josephus I. Kalangi
COCOS Vol. 8 No. 3 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.14956

Abstract

ABSTRACT Comforts could be defined as psychological and physical comforts. Psychological comfort could be perchieved by safety, peace, and relaxant feeling that felt personaly and subjectively measurable. In the meanwhile, physical comfort could be measured objectively such as spatial, visual, auditorial, and thermal. Open spaces are public space that accessible either directly within limited or indirectly within undeterminate period of time. Open spaces could appear as roads, sidewalks, urban spaces such as townparks, forests, and other similar things. This manuscript discussed about thermal comfort that felt by human whose had activity on an urban green space (Ruang Terbuka Hijau or RTH) of The University of Sam Ratulangi. This research aimed to studying respondent perceptions on the point of thermal comfort on The University of Sam Ratulangi’s RTH. This research used purposive sampling to select the urban green spaces which frequently accesed, while respondents are randomly chosen. These following 11 RTH known to be accessed frequently, they are FMIPA, FAPERTA, FAPET, BANK BNI, FPIK, FATEK, FEB, FISIP, FH, FKM A, and FKM B. This research concluded the most comfortable RTH based on respondent perceptions is FKM B (100%); followed by FAPERTA (94.1%), FATEK (82.4%), FAPET (80%), FEB (69.2%), FPIK (65%), Bank BNI (63.6%), FH (53.8%), FMIPA (45.5%), FKM A (33.3%), dan di FISIP (26.3%). Keywords: Perception, Green open space, Campus UNSRAT.
ANALISIS KEBUTUHAN LUASAN RUANG TERBUKA HIJAU KOTA MANADO BERDASARKAN FUNGSI PENYEDIA OKSIGEN Fadli Rahman; Josephus I. Kalangi; Fabiola B. Saroinsong
COCOS Vol. 9 No. 5 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.18900

Abstract

AbstractIncreased population indirectly resulted in the development of urban areas physically and tends to alter green open spaces into built areas to meet the needs and improve services to the population. As a result there is an increase in air temperature, decrease in ground water quality and urban air quality, and high noise level. The existence of urban green open space arrangement can overcome the development as well as to overcome the ecological impact of various disruption of human activities on the natural process in the City of Manado. Then to realize the ecological balance in the Manado city, there is need of green open space development approach that refers to the area and the need of oxygen. This study aims to calculate the area of green open space needed by Manado City based on oxygen supply function. Data analysis of green open space requirement based on area according to Law Number 26 Year 2007 and based on oxygen requirement using Gerakis formula (1974) modified by Wisesa (1998). The results show the green open spaces needed in Manado City area of 2953.45 ha. In meeting the needs of green open spaces Manado City based on the oxygen provider function then everyone is required to plant 3 trees, on an area of 25 m2.Keywords: green open space, oxygen demand, Manado City.
Fraksi Radiasi Matahari pada Sistem Agroforestri Cempaka Solar Radiation Fraction in the Cempaka Agroforestry System Randi Purba; Semuel P. Ratag; Josephus I. Kalangi
COCOS Vol. 10 No. 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.24168

Abstract

ABSTRACT  Plant growth and development depends on internal factors (genetic) and external factors (environment). Solar radiation (external factor) is an energy source needed in plant growth. In agroforestry systems the existence of woody species (trees) will reduce the level of light received by agricultural crops (annual crops). The purpose of this study was to determine the fraction of solar radiation in the Cempaka agroforestry system. The research was conducted in three locations, namely Lemoh Barat Village (295 masl), Rumoong Atas Village (489 masl) and Kinilow Satu Village (652 masl). Direct measurement of radiation using a solarimeter device placed in 3 observation points at each location, while the measurement of radiation fraction estimation was taken data of tree canopy width, tree height, tree spacing width and land area. The results of direct measurements of radiation obtained at the Lemoh Barat Village agroforestry area were 62%. Rumoong Atas Village were 51% and Kinilow Satu Village were 53%. The estimation results obtained by Lemoh Barat Village were 74%, Rumoong Atas Village were 62% and Kinilow Satu Village were 26%. Key words: Radiation Fraction, Agroforestry, Cempaka
LAJU RESAPAN BIOPORI PADA BEBERAPA TIPE TANAH BIOPORIAL APPROACHRATE IN VARIOUS SOIL TYPES Lidia Anike Pandeirot; Josephus I Kalangi; Alfonsius Thomas
COCOS Vol. 10 No. 5 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i3.24358

Abstract

ABSTACT  The city of Manado annually experiences flooding in certain areas caused by changes in land use, a cycle of reduction in river capacity, and public awareness in disposing of garbage and maintaining a very low environment. The study was conducted at four locations namely Pandu subdistrict,Rurukan sub-district,Kali village and Matungkas village. In order to determine the rate of water absorption and the minimum amount of biopore infiltration holes in four different soil types. From this research, it is expected to be able to provide information for the government and the developing community to be taken into consideration in efforts to prevent flooding and minimize surface runoff. The method in this study uses a factorial randomized design as a method of retrieving data which is then analyzed using an analysis of two way variants. The results of the study show that the rate of recharge has a significant effect on the level of depth, and type of soil. The highest absorption rate is in the regosol soil type and at a depth of 75 cm. Keywords : Biopori, Floods, Biopore Infiltration Holes
PERANAN PENGGUNAAN LAHAN DI AREA TANGKAPAN SUNGAI TATAARAN TERHADAP EUTROFIKASI DANAU TONDANO Claudio Bonifasius; Johan Rombang Johan Rombang; Josephus Kalangi Josephus Kalangi
COCOS Vol. 12 No. 3 (2020): EDISI JULI-SEPTEMBER 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i7.31141

Abstract

ABSTRACTEutrophication is a problem faced by the world today. eutrophication is causedby increasing nutrient concentrations that occur in freshwater ecosystems. Land usechange in this case greatly affects the freshwater ecosystem around the lake. Thisstudy aims to assess the levels of Nitrogen (N) and Phosphorus (P) in the Tataaranriver water flowing into Lake Tondano due land use in the Tataaran river catchmentarea. The method used in this research is survey method and determination ofsampling points based on purposive sampling or the determination according to theresearch objectives, in this case at the outlet of each land use which is then presenteddescriptively for comparison. The results of this study indicate that based on the studyof Nitrogen (N) and Phosphorus (P) levels in the Tataaran river water flowing into LakeTondano, the largest contribution transported comes from residential land use, namelythe average N value content is 56.86 mg / seconds and P of 217.64 mg / second.Keywords : Eutrophication, Landuse, River of Tataaran
ANALISIS KEBISINGAN BEBERAPA RUANG TERBUKA HIJAU DI KOTA MANADO Nastasia Irene Potoboda; Josephus Kalangi; Fabiola B. Saroinsong
COCOS Vol. 13 No. 1 (2021): EDISI JANUARI-MARET 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.32483

Abstract

ABSTRACTNOISE ANALYSIS GREEN OPEN SPACE IN MANADO CITYThis study aims to analyze the noise leve in several green open spaces in the city of Manado.This research was conducted in march 2020 in three locations, namely the UNSRAT field, theKONI field, and Jln.Piere Tendean-Ahmad Yani,Manado city, North Sulawesi. This study uses apurposive sampling method in determining the sampling point by means of measurements usinga sound level meter (SLM) and the data is processed by surfer 11 software. The results of thenoise level research for UNSRAT Field 40-70 dB(A), KONI Field 47-79 dB(A), and Jln.PiereTendean-Ahmad Yani 50-95 dB(A). From the results of the analysis of existing noise levels, itshows that the location with the highest noise level is Jln.Piere Tendean-Ahmad Yani which areincluded in the green open space area which are included in the green open space area whichonly reaches 71 dB(A) and 79 dB(A) the highest.Keywords: Noise, Green open space, and Manado City.
FLUKTUASI SUHU UDARA PADA EKOSISTEM HUTAN KOTA Nonong Krisnawati Loha; Johan A. Rombang; Josephus I. Kalangi
COCOS Vol. 14 No. 3 (2022): EDISI JULI-SEPTEMBER 2022
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v8i8.37237

Abstract

Abstract This study aims to determine fluctuations in air temperature in urban forest ecosystems. This research was carried out in 3 (three) places, namely Tomohon urban forest (921 meter above sea level), Bitung urban forest (Danowudu 248 meter above sea level) North Minahasa urban forest (Kenangan 342 meter above sea level), conducted in November 2021, for 5 days. Observation plots measuring 25x25 m at each location. The diameter of the crown was measured using the "Improvised technique". The results showed that, Danowudu urban forest had a tree density level of 0.0192 trees/m² with a diversity of 6 tree species, Tomohon urban forest had a tree density of 0.0224 trees/m² with a diversity of 3 tree species, and Kenangan urban forest had a tree density of 0.0272 trees/m² with a diversity of 5 tree species, the highest temperature fluctuation was obtained in the Kenangan urban forest at 7.48°C and the lowest at 5.08°C in the Tomohon urban forest. Keywords: Air temperature, fluctuation, urban forest
PERSEPSI DAN PERAN PENGUNJUNG TERHADAP PENGELOLAAN HUTAN KOTA PATRIOT BINA BANGSA KOTA BEKASI Sihaloho, Cristina Lestary; Saroinsong, Fabiola Baby; Kalangi, Josephus I.
AGRI-SOSIOEKONOMI Vol. 18 No. 1 (2022)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/agrsosek.v18i1.55196

Abstract

This research aims to find out the perception and role of visitors to management in the Patriot Bina Bangsa City Forest (PBBCF) of Bekasi city. The study was conducted from October to November 2021. The selection of respondents was conducted by a simple random sampling method of 97 respondents. The data used is primary data and secondary data. Primary data is collected through questionnaires that have been filled out by visitors who deliberately make visits and visits in 2021. Secondary data was obtained through the Service Technical Execution Unit (STEU) of the PBBCF Bekasi City. Secondary data is also obtained through books obtained from local bookstores and the internet through google scholars in the form of books, journal articles, and thesis related to this research topic, namely the perception and role of visitors to the management of PBBCF Bekasi City. The results of this study showed that the perception of visitors to the management of PBBCF Bekasi City belonged to the category of good (69.62%). This is supported by good activity comfort (73.4%) as well as hard element facilities (66.45%) and soft elements (75.05%) which are good. Visitors already take roles in maintenance roles (81.76%), planning roles (31.6%) as well as roles in development (27.8%).
Perencanaan Lanskap Ekowisata Hutan Mangrove di Tapak Meras Taman Nasional Bunaken Paembonan, Mutiara Piekarsa; Saroinsong, Fabiola B.; Kalangi, Josephus I.
Silvarum Vol. 3 No. 2 (2024): Silvarum
Publisher : Fakultas Pertanian, Universits Sam Ratulangi, Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/sil.v3i2.49591

Abstract

Meras merupakan salah satu Kelurahan yang terletak di Kecamatan Bunaken, Kota Manado, Provinsi Sulawesi Utara. Kelurahan Meras memiliki ekosistem pesisir yang lengkap dan beragam seperti hutan mangrove namun belum dioptimalkan untuk menjadi kawasan wisata. Penelitian ini bertujuan untuk menyusun rencana lanskap atau penataan kawasan ekowisata hutan mangrove di Tapak Meras. Pengamatan dilakukan dengan metode observasi langsung ke lapangan yang bertujuan untuk melihat kondisi nyata yaitu potensi dan kendala dari kawasan kemudian mendokumentasikan keadaan hutan mangrove Tapak Meras untuk perbandingan sebelum dan sesudah perencanaan. Hasil penelitian mendapatkan masyarakat setempat mendukung penuh pengembangan ekowisata di hutan mangrove Tapak Meras. Masyarakat juga akan berpartisipasi dalam membantu memelihara kelestarian hutan mangrove. Perencanaan ekowisata di hutan mangrove Tapak Meras dikembangkan melalui pembagian tata ruang wilayah ekowisata yang terdiri dari ruang penerimaan seluas 0,4 ha, ruang pelayanan seluas 1,2 ha, ruang penyangga seluas 8,3 ha, dan ruang ekowisata seluas 4,8 ha.
Co-Authors Adenancy A. Montjai Adenancy A. Montjai, Adenancy A. Alfonsius . Thomas Alfonsius Thomas Alfonsius Thomas Alfunsius Thomas Astuti Anna Beka’ Belly Ireeuw Caroline N.A.C. Tasirin Chandra C. Mosooli Chandra C. Mosooli, Chandra C. Christien N. Kendek Claudio Bonifasius Cristina Lestary Sihaloho Dina Juanita Etivera Safuf Etivera Safuf, Etivera Fabiola B. Saroinsong Fabiola B. Saroinsong Fabiola B. Saroinsong Fabiola Baby Saroinsong Fadli Rahman Habdi Selpia Habdi Selpia, Habdi Handiward Tonoro Hartono . Hengky D. Walangitan JOHAN A. ROMBANG Johannes E. X. Rogi Jos Singgano Jos Singgano, Jos Josea Singgano Jouke G. Watratan Lidia Anike Pandeirot Luh Putu Ratna Sundari Malsupri Taher Marthen T. Lasut Marthen T. Lasut Martina A. Langi Martina A. Langi Meity Rantung Nastasia Irene Potoboda Nonong Krisnawati Loha Paembonan, Mutiara Piekarsa Pangemanan, Euis F. S. Prestin Babo Randi Purba Reynold P. Kainde Reynold P. Kainde Rizky Nurhalizah Karim Santi . Lumingkewas Saroinsong, Fabiola Baby Semuel P. Ratag Semuel P. Ratag Serly Lumabi Sihaloho, Cristina Lestary Sukarman Hi. Jafar Telji Y. Palemba1, Tepenur Weya Tepenur Weya, Tepenur Terry M. Frans Wawan Nurmawan Zulfitri Lawe