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Johny S. Tasirin
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Distribusi dan Populasi Burung Manguni (Otus manadensis) di Gunung Kosibak, Taman Nasional Bogani Nani Wartabone Solang, Fransisca; Tasirin, Johny S.; Nurmawan, Wawan
COCOS Vol 7, No 3 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i3.12120

Abstract

ABSTRACTThe national park has an important role in the preservation of biodiversity, became the house for animals to living wildly. Otus manadensis is one of wild animals in the Bogani Nani Wartabone National Park is endemic species Sulawesi who have ecological role as pest controller. Quantitatively the spread of this species is not known for certain. This research conducted approximately 3 months from September – December 2015. Used methods of the point count and transect line. The point of observation is systematically divided into 4 segments based on the height of the surface of the sea. Three segments including in the national park area that is located in the Mount Kosibak while other segments is a production area or field located near the settlement. Research results obtained that Otus manadensis prefer areas with a good vegetation cover. There is a very high correlation between the condition of the vegetation cover with the density of Otus manadensis in Mount Kosibak. Otus manadensis density higher on the vegetation with basal area and importance value index is high.Key word : Population, Otus manadensis, Vegetation, Segment, Mount Kosibak, TNBNW
KOMUNITAS BURUNG DI HUTAN LINDUNG GUNGUNG MASARANG Warwer, Otis; Tasirin, Johny S.; Nurmawan, Wawan
COCOS Vol 1, No 1 (2019)
Publisher : COCOS

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Abstract

ABSTRACT According to Dias (2006) Bird communities are groups of individuals of several species who live together in the same space and time. Complex and heterogeneous vegetation structures will increase diversity in a habitat, which is thought to increase the diversity of birds in a community. The purpose of this study was to study bird communities in Gunung Masarang Protection Forest, Tomohon City. The study was conducted in June to July 2018 in the Mount Masarang Protection Forest. Data retrieval is done by meode count points (count points). The results showed that there were 47 species of birds from 24 families in Gunung Masarang Protection Forest, with 19 species of Endemic Sulawesi and 2 species protected by LHK 92/2018 Candy with medium species diversity H '= 2.66 and evenness value E = 0.61. Keywords: Birds, Bird Communities, Mount Masarang Protected Forest
KELIMPAHAN JENIS SATWA LIAR DI TANJUNG BINEREAN KECAMATAN PINOLOSIAN TENGAH KABUPATEN BOLAANG MONGONDOW SELATAN Malir, Nicodemus; Lasut, Marthen T.; Tasirin, Johny S.
COCOS Vol 1, No 2 (2018)
Publisher : COCOS

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Abstract

Binerean cape retains a high biodiversity, including the diversity of wildlife species. This research aims to know the abundance of wildlife species using camera traps in South Bolaang Mongondow Regency. The data was taken using Bushnell trophy-cam and Reconyx camera traps. The results show that there are 15 species from 13 families of wildlife in Binerean Cape. The most abundant wildlife species is the macaques (Macaca nigra) at 65.3% with an encouter rate of 4.61 photos/days. It is followed by Sulawesi wild boar (Sus celebensis) with 13.5% abundance or 0.96 photos/day camera trapping. Third abundance is Sulawesi rats (Paroromys sp.) at 13.2% abundance and 0.93 photos/day. The lowest abundance at 0,1%  or less are common emerald doves (Chalcophaps indica), red-bellied pitta (Pitta erythrogaster), whitish dwarf squirre (Prosciurillus leucomus), common water monitors (Varanus salvator), dan red-backed thrush (Zoothera erythronota). Keyword: Headland Binerean, Animals Wild, Species diversity
PERDAGANGAN JENIS SATWA LIAR DI PASAR LANGOWAN, SULAWESI UTARA Taogan, Silfana; Kainde, Reynold P.; Tasirin, Johny S.
COCOS Vol 1, No 2 (2020)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.27346

Abstract

ABSRACTTujuan penelitian mengetahui jenis satwa dan jumlah masing-masing dan asal satwa liar yang diperdagangkan di Pasar Langowan. Penelitian ini dilakukan pada bulan November 2019 di Pasar Langowan, Kabupaten Minahasa, Provinsi Sulawesi Utara. Metode Pengumpulan Data yang digunakan ialah dengan melakukan wawancara terhadap pedagang dan pembeli dengan menggunakan kuisoner. Seluruh pedagang yang menjual daging satwa diwawancarai. Jadi pengumpulan data pedagang bersifat sensus. Setiap pembeli satwa yang dijadikan responden adalah mereka yang ditemukan membeli daging atau bagian lain dari satwa. Pengamatan dilakukan selama 6 hari secara berturut-turut. Ada 8 orang pedagang satwa di Pasar Langowan yang memperjualbelikan 5 jenis satwa yakni Sus celebensis, Paruromys dominator, Pteropus celebensis, Python reticulatus, dan Varanus salvator. Total volume perdagangan jenis-jenis satwa liar dalam 6 hari pengamatan di Pasar Langowan adalah Python reticulatus Rp 11.850.000, Pteropus celebensis Rp 10.098.000, Sus celebensis Rp 8.295.000, Poruromys dominator Rp 4.500.000, dan Varanus salvator Rp 390.000. Seluruh pembeli jenis-jenis satwa di Pasar Langowan melakukan transaksi dagang untuk keperluan konsumsi daging dengan Jenis Sus celebensis dan Python reticulatus memiliki pembeli terbesar masing-masing 45% dari total responden.Kata kunci : PERDAGANGAN JENIS SATWA LIAR, LANGOWAN
KEANEKARAGAMAN JENIS BURUNG DI SEKITAR MATA AIR BRON DESA WAREMBUNGAN KABUPATEN MINAHASA Ishak, Muhammad Rezah M; Tasirin, Johny S.; Nurmawan, Wawan
COCOS Vol 1, No 4 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i4.22089

Abstract

ABSTRACTBirds are one of the biological wealth possessed by Indonesia. The presence of feed, nesting sites and stops is a factor that influences bird species' wealth at the local level. Birds are found in almost every place and have an important position as one of Indonesia's animal wealth. Birds also have a close connection with human life since time immemorial. This study aims to inventory and analyze the diversity of bird species and their abundance around the eyes of Bron water, Warembungan Village, Minahasa Regency. The study was conducted from August to September 2016 around the eyes of Bron's water, Warembungan Village, Minahasa Regency. Data retrieval is done by the IPA-Count method. The results of observations were found 49 species of birds from 26 families, with the Shannon-Wiener index value 2.44 as an indication of the diversity of species of birds around the Bron spring. Keywords : Birds, Bird species diversity, Around the Bron spring
KOMPOSISI DAN STRUKTUR JENIS POHON DI HUTAN PRODUKSI TERBATAS AKE OBA – TANJUNG WAYAMLI – AKE KOBE Kasmadi, Didi; Tasirin, Johny S.; Sumakud, Maria Y.M.A.
COCOS Vol 6, No 13 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i13.8664

Abstract

ABSTRACT  Limited Production Forest (HPT) Ake Oba - Tanjung Wayamli -Ake Kobe with an area reaching 151.603 ha. This area is divided into several districts / cities, one of which is the City of Tidore Islands with an area of about 26.707,5 ha. Collecting data in the field by the method of sample plots with a size of 100 mx 100 m with a total area of field observation area of 3 ha. From the data processing on field observation plots are 52 type of scientific names with 61 types based on local names with the number of individual trees of 678 individuals (including the level of seedlings, saplings, poles and trees). The most dominant type is the type of Hiru (Vatica papuana Dyer) as many as 102 individuals, K. Iron (Intsia bijuga O.Kt.Ze) as many as 70 individuals, Kora (Anisoptera polyandra Bl.) By 51 individuals, caplong (Calophyllum sp.) As 40 individuals and Kenari (Canarium balsamiferium Wild) as many as 35 individuals.  Keywords: Composition and Trees Structure, Sample Plot, HPT Ake Oba - Tanjung Wayamli -Ake Kobe.
PENENTUAN BLOK PENGELOLAAN CAGAR ALAM TANGKOKO – CAGAR ALAM DUASUDARA DENGAN PENDEKATAN SISTEM INFORMASI GEOGRAFIS (SIG) Effendi, Willy N.; Tasirin, Johny S.; Langi, Martina A.; Rotinsulu, Wiske
COCOS Vol 4, No 3 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i3.3849

Abstract

ABSTRACTThe objective of this study is to develop Tangkoko - Duasudara Nature Reserves management blocks using Geographic Information Systems approach. The overlaying methods of thematic maps were used to blend land cover, elevation, slope, and distribution of wildlife species. Social data included demographic data in the surrounding area of Tangkoko - Duasudara Nature Reserves. Management block criteria and scoring refer to Peraturan Pemerintah Tentang Tata Hutan dan Penyusunan Rencana Pengelolaan Hutan, Pemanfaatan Hutan dan Penggunaan Kawasan.The result showed that Tangkoko - Duasudara Nature Reserves are divided into three blocks, namely Restoration/Rehabilitation Blocks (1724.29 ha; 23,22%), Jungle Blocks (4.251,41 ha; 57,26%), and Core Blocks (1449,30 ha; 19,52%). Restoration/rehabilitation blocks are spread into five places and physically characterized by moderate slope, medium altitude and low species density. Land cover is dominated by open land and agriculture. Jungle Block are spread into three places and characterized by plane to medium altitude and high species density. Secondary forest is the dominant land cover. The Core Blocks are spread into two places and characterized by steep slopes, high altitude, high species density. The land cover is dominated by secondary forests.
STRUKTUR DAN KOMPOSISI HUTAN MANGROVE LIKUPANG KABUPATEN MINAHASA UTARA PROVINSI SULAWESI UTARA Sengkey, Felly E.; Langi, Martina A.; Tasirin, Johny S.
COCOS Vol 6, No 13 (2015)
Publisher : COCOS

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Abstract

ABSTRACT The most of natural Indonesia area is dominated by water teritorial which consist of thousands of island with souronded by mangrove. Functions and benefits of mangroves have been widely known, both as a place of spawning fish in the waters, land protector of abrasion due to waves, winds from the mainland protector, filter sea water intrusion inland and content of heavy metals that are harmful to life, a haven of migratory birds, and as wildlife habitat and other direct benefits for humans. The purpose of this research is aimed to analyze the structure and composition of mangrove vegetation found in the District Likupang, North Minahasa Regency, North Sulawesi. This research was conducted using the transect method and terraced path, by surveying observations and direct measurements in the field and then analyzed descriptively. The collected data are presented in tables and graphs. The results showed that the structure of mangrove forests Likupang for seedling phase dominated by Sonneratia sp, for the sapling phase is dominated by Avicennia alba and to phase dominated by Sonneratia sp while for there phase dominated by Sonneratia sp and mangrove forest composition Likupang are dominated by Sonneratia sp followed by the type Rhizopora sp., and Bruguera sp.  Key words: Forest Mangrove, Mangrove types, structure and composition of the Mangrove  
KARAKTERISTIK DAERAH TANGKAPAN AIR SUNGAI MALALAYANG SULAWESI UTARA Ratag, Marcel J. R.; Tasirin, Johny S.; Thomas, Alfonsius
COCOS Vol 6, No 2 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i2.6793

Abstract

ABSTRACTTHE CHARACTERISTIC CATCHMENT AREA OF MALALAYANG RIVER NORTH SULAWESIThis research aim to identify the characteristics catchment area of Malalayang river. This research was done from february until march 2012 at catchment area of Malalayang river. The methods in this research is doing by observations to the area to verification and collect the data in some sample representative area. Sample point observable are in Air Panas catchment area, Warembungan catchment area and Tomohon catchment area. This research show the closure of the land in sub watershed Malalayang is dominated by estate mixed with broad area 2941.95ha, settlement population 583.11ha, forest area 534.18ha, grass area 306.3ha, field area 190.92ha and free area 71.55ha. the speed of water in Air Panas catchment area 234.0 m3/hour, the speed of water in Warembungan catchment area 831.6 m3/hour and the speed of water in Tomohon catchment area 882.0 m3/hour. The result of the regression equivalen is y = 0.217x + 339.59 with r2= 0.5107.Key words; water catchment area, land over, water discharge
Fenologi Pohon Angsana (Pterocarpus indicus) Di Kota Manado. Weya, Tepenur; Tasirin, Johny S.; Langi, Martina A.; Kalangi, Josephus I.
COCOS Vol 7, No 2 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v7i2.12015

Abstract

ABSTRACTThis research is aimed to study the phenology of angsana trees in the urban areas of Manado city. Sam Ratulangi street is divided into five observing segments with relatively the same number of trees at about 129-131 at each segment giving a total of 651 trees. The phenology observed at each tree including leaf, flower, and fruit phenomenon. The diameter of each tree are measured. Trees were then greuped into five categories:<10, 10-<20, 20-<30, 30-<40 and ≥40 cm. The results shows that angsana trees in Sam Ratulangi street had diameter of about 3.4-50.5 cm.The highest accumulation at trees was at last fourth categories ranging at 132-185 trunks. The phenology of leaves which dominate the entire segments on Sam Ratulangi street are green leaves at 89.9%of the 651 trees.The shoot phenology was performed by 11-20 trees (1.7-3.1%) and the flowering phenomena were found in 17-20 trees (2.6-3.8%). The flowering phenomena was mostly found at segment 1 (zero point) and becoming less and less toward the upper segments (Citraland intersection). The fruiting phenology shows and an opposite trend. The new flowering phenology are found on trees in three categories at medium diameters (10-40 cm) while the phenology of fruiting are found on trees with large diameters (>20 cm).