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Martina A. Langi
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PENDUGAAN BIOMASSA TANAMAN PENGHIJAUAN ANGSANA (Pterocarpus indicus Willd) DI JALAN SAM RATULANGI DAN JALAN TOAR KOTA MANADO Iswan . Laengge; Martina A. Langi; F. B. Saroinsong; J . Singgano
COCOS Vol. 2 No. 2 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.1471

Abstract

ABSTRAK Angsana merupakan jenis tanaman penghasil kayu berkualitas tinggi dari suku Fabales, kayunya tergolong keras dan berat. Penurunan kualitas lingkungan perkotaan ditandai dengan semakin meningkatnya pencemaran udara yang dihasilkan oleh kendaraan bermotor, limbah rumah tangga, dan aktivitas industri yang mengemisikan gas-gas seperti CO2 dan gas NOx di samping bentuk-bentuk polutan lainnya. Hal-hal tersebut dapat memperburuk dampak pemanasan global. Penelitian ini dilakukan untuk menaksir biomassa guna mengetahui kandungan karbon (C) dari jenis angsana (Pterocarpus indicus Willd) pada sisi kiri jalur penghijauan Jalan Sam Ratulangi dan Jalan Toar, Kota Manado. Penghitungan biomassa angsana menggunakan persamaan allometrik untuk hutan atau tumbuhan tropika lembab yang terdiri dari dua peubah bebas, (AGB = α + β1 (ln (DBH)2× H). Hasil pendugaan biomassa tanaman angsana menunjukkan rata-rata biomassa di jalur penghijauan Jalan Sam Ratulangi dan Jalan Toar masing-masing sebesar 252,12 kg, dan 230,93 kg. Kandungan karbon tersimpan pada kedua jalur penghijauan masing-masing sebesar 126,06 kg, dan 115,46 kg.Kata kuci : Pemanasan global, biomassa, karbon, metode non-destructive sampling, persamaan allometrik, Pterocarpus indicus Willd
Analisis Potensi Penyerapan Karbon Atmosferik di Stasiun Penelitian Hutan Bron Desa Warembungan Kab. Minahasa Caroline N.A.C. Tasirin; Martina A. Langi; Hengky D. Walangitan; Josephus I. Kalangi
COCOS Vol. 3 No. 6 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i6.2927

Abstract

ABSTRACTThis study aims to analyze the current carbon stock of Bron Forest Research Station, Warembungan village, regency of Minahasa, and to analyze the potential of Bron Forest Research Station in sequestering atmospheric carbon. This study was done in Bron Forest Research Station, Warembungan village, regency of Minahasa, for three months. Measurements for this study were done in 15 systematically placed observation plots. The measured variables were diameter at breast height, bole height, and the mass of litter and understory.The results of this study shows that Bron Forest Research Station has a total biomass of 49,821.84 tonnes, or 996.44 tonnes/ha. This biomass consists of 23,416.27 tonnes of carbon, atau 468.33 tonnes/ha. Up to the time of the study, Bron Forest Research Station has sequestered 85,859.65 tonnes of carbon dioxide from the atmosphere, or 1,717.19 tonnes/ha. Assuming the forest does not undergo any significant change, Bron Forest Research Station will potentially increase its biomass as by 4.66 tonnes/ha/year, or 232.90 tonnes/year for the entire 50-hectares area. This additional biomass entails an increase of carbon stock by 1.72 tonnes/ha/year, or as much as 86.17 tonnes/year for the whole area. Bron Forest Research Station will potentially sequester an additional 6.32 tonnes/ha/year of carbon dioxide from the atmosphere, or as much as 315.97 tonnes/year for the whole area.Keywords: biomass, carbon sequestration, carbon dioxide sequestration.
KONDISI BIOFISIK GUNUNG TUMPA SEBAGAI TAMAN HUTAN RAYA (TAHURA) Marwan M. Wowor; Martina A. Langi; Fabiola B. Saroinsong; Wawan Nurmawan
COCOS Vol. 4 No. 2 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i2.3776

Abstract

ABSTRACTMount Tumpa represents one of area of water forest (catchment area) what is remained in TownManado specified initially as protected forest of at date of 28 April 1932 broadly 215 ha, nowadayspursuant to SK.434/MENHUT-II/2013 of is date of 17 June 2013 have changed over the status becomethe Great Forest Garden ( TAHURA) broadly 296 ha. This research target to learn the last conditionbiofisik of Mount Tumpa. Biological condition includes the flora, and fauna, while physical conditionincludes to landscadearea facility, and also areatiliy . Method used in flora perception of exist in GreatForest Garden of Mount Tumpa that is band have check to systematically of the size 20 x 20 m2. Florasurvey conducted at 9 dots in Great Forest Garden of Mount Tumpa. Data presented in the form oftabulation, is hereinafter descriptive by analysed. There are 59 flora type in Great Forest Garden areaof Mount Tumpa. Most dominant flora type is Spathodea campanulata, followed by Arenga pinnata, andGarcinia sp. Great Forest Garden of Mount Tumpa own the fascination wisata in the form of beautifulviews wich are scattered in several places.Keywords : condition biofisik of mount tumpa, as great forest garden
PENENTUAN BLOK PENGELOLAAN CAGAR ALAM TANGKOKO – CAGAR ALAM DUASUDARA DENGAN PENDEKATAN SISTEM INFORMASI GEOGRAFIS (SIG) Willy N. Effendi; Johny S. Tasirin; Martina A. Langi; Wiske Rotinsulu
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.
POTENSI TUMBUHAN PAKAN ALAMI bagi MONYET HITAM SULAWESI (Macaca nigra) di HUTAN LINDUNG GUNUNG MASARANG Rivo F. Rahasia; Johny S. Tasirin; Martina A. Langi; Saroyo Sumarto
COCOS Vol. 4 No. 5 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i5.4692

Abstract

ABSTRACT Mount Masarang Forest Reserve covers an area of 158,48 ha and is part of the natural habitat of the Sulawesi crested black macaque based on the geography and the forest. A population of Sulawesi crested black macaques may thrive here through introduction and migration from nearby populations. This research is aimed to study the potential of natural food plants of the Sulawesi crested black macaque (Macaca nigra) in Mount Masarang Forest Reserve. This research was done from March to April 2013 in Mount Masarang Forest Reserve, Tomohon City. Data was collected using multiple stage random sampling method. From 131 species plants in Mount Masarang Forest Reserve, found 7 species plants naturally eaten by Sulawesi crested black macaques, with varying population densities and role in the community. The species are Alstonia scholaris (5.944 individuals), Piper aduncum (5.225 individuals), Euodia minahassae (3.220 individuals), Trema orientalis (1.486 individuals), Koordersiodendron pinnatum (991 individuals), Caryota mitis (743 individuals) dan Dendrocnide microstigma (495 individuals). The highest distribution of food plants can be found on the eastern slopes, because 42% of the food plants on Mount Masarang Forest Reserve are found on these slopes.Keywords: Macaca nigra, Mount Masarang Forest Reserve, potential of natural food plants
DAYA TARIK WISATA ALAM BUKIT DOA MAHAWU TOMOHON BERDASARKAN ASPEK PENGUNJUNG Fince Aibekob; Fabiola B. Saroinsong; Martina A. Langi; Alfonsius Thomas
COCOS Vol. 5 No. 1 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i1.4934

Abstract

ABSTRACT This research aims to know the profile, spreading, and the level of visitor’s satisfaction in tourism area of Bukit Doa of Mahawu Tomohon along the year of 2012 and 2013. The visitors spread is analysed based on monthy visit data during 2012-2013 for two years. The level of visitor’s satisfaction and development advice is got by interviewing and questioner filling.This research was done in natural tourism area of Bukit Doa of Mahawu in Tomohon, North Sulawesi province. The material used in this research is the questioner’s paper.The visitor’s profile is analysed based on the home, gender, age, education level, job, kind of vehicle, and the way to visit. The visitor’s perception about tourism fascination was got from the interview result and questioner filling. Based on the research done, the visitors of Tourism object of Bukit Doa of Mahawu are satisfyied enough and even come of them are very satisfyied. The amount of the visitors in the year of 2012 and 2013 were 90.327. The most visitors coming was on march 2013 that was 11.217 visitors while the least was on February 2013 that was only 4066 visitors.
ZONASI TUMBUHAN UTAMA PENYUSUN MANGROVE BERDASARKAN TINGKAT SALINITAS AIR LAUT DI DESA TELING KECAMATAN TOMBARIRI Kendy H. Kolinug; Martina A. Langi; Semuel P. Ratag; Wawan Nurmawan
COCOS Vol. 5 No. 4 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i4.6561

Abstract

ABSTRACTThis research was conducted to test the relation between salinity and distribution pattern of mangrove vegetation in Teling, district of Tombariri. This research aimed to describe the distribution of main zones of mangrove plant species in relation to the salinity of sea water in Teling, district of Tombariri. This research was conducted from July to August 2014 at the mangrove forest at Teling, the district of Tombariri, North Sulawesi. This research used the combination of plot and line method. There is mangrove zonation in Teling District of Tombariri which consists of (from the sea to the mainland) Sonneratia zone (zone 1), Rhizophora zone (zone 2), and Bruguiera zone (zone 3). Zone 1 is located in the outer portion or directly adjacent to the sea. Zone 2 is between Sonneratia zone and the adjecent land. Zone 3 is located at the rear of Rhizophora zone and only found on one track at the research site. The average salinity values on Sonneratia zone range from 33 ‰ to 35,5 ‰, whereas the range for Rhizophora is from zone 31,8 ‰ to 33,7‰ and Bruguiera zone is 33‰.Keywords: Mangrove, Bunaken National Park, Zoning, Salinity
PENYEBARAN Ficusspp DI HUTAN GUNUNG TUMPA, PROVINSI SULAWESI UTARA. Abanius Yanengga; Martina A. Langi; Reinold P. Kainde; Wawan Nurmawan
COCOS Vol. 6 No. 3 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i3.6994

Abstract

ABSTRACTTumpa Mountain area in North Sulawesi province was originally aprotected forest that isseton 28 April 1932 wide 215 ha, then based SK. 434/Menhut-II/2013 On June 17, 2013 the status of the switch into Forest Park (TAHURA) with extensive 296 ha. The purpose of this research to study the spread of Ficus groups in forest areas of Mount Tumpa, North Sulawesi. The method used in this research is the exploration method to divide the study area based on the direction of the wind, namely; aspecteast, west, north, and south. In every aspect of the slope was observed distribution of the types of groups Ficus. The data is then compiled and tabulated gotten based aspects of the slope and level/phasegrows. The results of the research that has been done there is 230 individuals Ficus spp. Spread in 9 types. Based on Ficus spp aspect, is the most dominant aspect of the West (85) followed aspect, further deployment based on the level of growth is the level of the tree(112) followed by the pole (53) individuals
Struktur Dan Komposisi Vegetasi Mangrove Di Pulau Mantehage Elok S. Putro; Johny S. Tasirin; Marthen T. Lasut; Martina A. Langi
COCOS Vol. 6 No. 5 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i5.7723

Abstract

ABSTRACTThis research was carried out from December 2012 to February 2013 at Mantehage Island. This research was aimed to describe the structure and composition mangrove vegetation at Mantehage Island. Mangrove ekosistem at Mantehage Island divided into seven segments according to the characteristic of the island. The methods used are plot sampling on systematic line. The results showed that mangrove in Mantehage concist of eleven species: Avicennia officinalis, Bruguiera gymnorrhiza, Bruguiera parviflora, Ceriops tagal, Excoecaria agallocha, Lumitzera littorea, Rhizophora apiculata, Rhizophora mucronata, Scyphiphora hydrophylla, Sonneratia alba, and Xylocarpus moluccensis. The highest importance value for tree were Bruguiera gymnorrhiza (97.33%), and Rhizophora apiculata (89.59%), for pole were Rhizophora apiculata (123.50%), and Rhizophora mucronata (70.59%), for sapling was Rhizophora apiculata (80.40%), and for seedling were Rhizophora apiculata (56.98%) and Bruguiera gymnorrhiza, (52.52%). At trees stratum, the segment D and E possessed higher species composition than other segments. The highest of frequency of occurance for trees were Bruguiera gymnorrhiza and Rhizophora apiculata.Key Words: Structure, Composition, Mangrove
STRUKTUR DAN KOMPOSISI HUTAN MANGROVE LIKUPANG KABUPATEN MINAHASA UTARA PROVINSI SULAWESI UTARA Felly E. Sengkey; Martina A. Langi; Johny S. Tasirin
COCOS Vol. 6 No. 13 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i13.8663

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  
Co-Authors Abanius Yanengga Alfa Jevian Pariama Alfonsius Thomas Ardima Tidore Astria Retrisna Werung Caroline N.A.C. Tasirin Elisabeth Luturyali Elok S. Putro Euis F. Pangemanan F. B. Saroinsong Fabiola B. Saroinsong Faldi Suhendro Gonibala Febrianti, Eka Mawar Felly E. Sengkey Fince Aibekob Hard N. Pollo Hengki D. Walangitan Hengky D. Walangitan Iswan . Laengge J . Singgano Jekson Wangka Josephus I. Kalangi Kendy H. Kolinug Kiandreas Tarigan Maria Y.M.A. Sumakud Marthen T. Lasut Marwan M. Wowor Meike D. Lakiu Novelianer M. Charvelindah Orlando Suryadinata Reinold P. Kainde Reynold P. Kainde Rivo F. Rahasia Samuel A. Mom Saroyo Saroyo Semuel P. Ratag Sudarmanto Angona Tepenur Weya Triska E. Rintjap Wawan Nurmawan Willy N. Effendi Wiske Rotinsulu