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All Journal Saintia Biologi Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Floribunda IJOEP : International Journal of Ecophysiology
Nursahara Pasaribu
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Law, Crime, Criminology & Criminal Justice Social Sciences

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MEMBENTUK MASYARAKAT MANDIRI DENGAN MEMBANGUN ENERGI BIOMASSA Agus Salim Harahap; Nursahara Pasaribu; Albert Pasaribu
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 1 (2017): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.019 KB) | DOI: 10.32734/abdimastalenta.v2i1.2207

Abstract

Energy is a basic requirement for society. Currently the State of Indonesia is experiencing an energy crisis, lead to weakening economy of the State, It is proved by the high amount of energy imported gas reaching 58% of the total need of Domestic reached 6.1 million metric tons (MT). Indonesia has the potential of biomass energy source Its great according to US records. Commerce Department in its report: Renewable Energy Market Assessment Report: Indonesia, biomass energy sources that have been used as the only alternative source of 445 MW from the total existing sources amounting to 49.810 MW, The means 99% from the untapped sources of biomass. LPG gas is a basic requirement that the fundamental for a State to the smallest part of the countrynamely village / hamlet. where people need energy LPG gas in large quantities but low purchasing power. Currently the supply gas often deficient until the scarcity of fuel LPG gas. This condition is very difficult for the community to thrive. Biogas energy sources derived from biomass is abundant, but not many take advantage of its potential.biomass energy is very cheap, environmentally friendly, abundant resources, able to provide solutions for village communities and hamlets. With aerobic fermentation technology in the digester to produce biogas which can be helpful. Biogas can be used as fuel for cooking and electricity generation. Community dedication aims to Forming community will be self defense biogas energy. So that the villagers do not dependent So that citizens are not dependent on LPG gas are scarce and expensive price
KOMPOSISI DAN STRUKTUR RERUMPUTAN DI KAWASAN DANAU TOBA DESA TOGU DOMU NAULI KECAMATAN DOLOK PARDAMEAN KABUPATEN SIMALUNGUN SUMATERA UTARA Pinta Omas Pasaribu; M Zaidun Sofyan; Nursahara Pasaribu
Saintia Biologi Vol 1, No 2 (2013)
Publisher : Saintia Biologi

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Abstract

The composition and structure of grasses in Toba Lake Area Togu Domu Nauli Village, Dolok Pardamean Subdistrict, Simalungun Regency, North Sumatra has been studied from March to June 2012. The study site is determined by purposive sampling method and it is divided three locations based on altitude with 20 plots of  1 x 1 m size for each area. There are 21 species of grasses that belong to two families found at three study sites. The first area was dominated by Imperata cylindrica, the second was dominated by Leersia hexandra, and the third was dominated by Imperata cylindrica with importance values are 58.408 %, 72.202 %, and 81.316 %, respectively. The diversity index (H’) of grasses are 1.826, 1.432, 1.010 at area I, II, and III, respectively and equitability index (E) of grasses are 0.658, 0.597, 0.519 at area I, II, and III, respectively. The Similarity index of grasses ranges from 46.91% to 62.56%, with the highest similarity index is 62.56%  that is found between area II and III.   Keyword : Composition, grasses, Simalungun, structure.
KOMPOSISI DAN STRUKTUR RERUMPUTAN DI KAWASAN DANAU TOBA DESA HARANGGAOL KECAMATAN HARANGGAOL HORISON KABUPATEN SIMALUNGUN SUMATERA UTARA Novia Wulandari Tarigan; M Zaidun Sofyan; Nursahara Pasaribu
Saintia Biologi Vol 1, No 2 (2013)
Publisher : Saintia Biologi

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Abstract

The composition and structure of Grasses in Haranggaol Village Haranggaol Horison Subdistrict Simalungun Regency North Sumatra has been studied from April to July 2012. The objective of the study was to determine the composition and structure of grasses at different altitudes. Sampling area was defined by purposive sampling method  and divided into three locations based on altitude with 20 plots of 1 x 1 m size for each area. From the study it was found 24 species of grasses that belong to two families. The first location was dominated by Microstegium ciliatum (81.095%), the second was dominated by Deyeuxia brachyathera (68.504%) and the third was dominated by Leersia hexandra (79.158%). The diversity index  (H')  of grasses are 1.557, 1.790 and 1.414 in the location I, II and III, respectively and equitability index (E) of grasses are 0.607, 0.661, 0.726 in the location I, II and III, respectively. The similarity index ranges from 30 to 50%, with the highest similarity index is 50% that was found between location I and II.   Keyword: composition, grass, Haranggaol, structure
KEANEKARAGAMAN POHON DAN POLE SERTA POTENSI KARBON TERSIMPAN DI KAWASAN HUTAN SEKUNDER 30 TAHUN DAN PERKEBUNAN KOPI DI TELAGAH, LANGKAT Jhon Marthali Simamora; Retno Widhiastuti; Nursahara Pasaribu
Saintia Biologi Vol 1, No 2 (2013)
Publisher : Saintia Biologi

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Abstract

The diversity of tree, pole and potential of carbon stored in 30 years secondary forest and coffee field at Telagah District of Langkat was investigated from February to June 2012. The  study site was determined by purposive sampling method with total area 40 x 200 meters. The study site is divided into 20 plots and sub plots. Result found that 15 families and 23 species for tree phase and 16 families and 26 species of pole phase. The area were dominated by Macaranga tanaria with important value 57.11% for tree, and followed by Ficus aurantiacea with important value 54. 472% for pole. The diversity index of tree is 2.650 and 2.715 for pole. Equitability index of tree is 0.520 and 0.586 for pole. The potential of carbon stored in tree is 146.519 ton/ha, 3.933 ton/ha for pole, and 0.0489 ton/ha for coffee plantation.   Keywords: Carbon, Coffee Plantation, Diversity, Important value index, pole, purposive sampling
Species Inventory of Araceae In West Block of Batang Toru Forest, North Tapanuli Regency, North Sumatra Nursahara Pasaribu
International Journal of Ecophysiology Vol. 3 No. 1 (2021): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v3i1.10028

Abstract

Araceae is a family plant that generally inhabits the tropical region with relatively high humidity such as The Batang Toru Forest Area. Environmental conditions such as humid or wet, watery, shady and high rainfall support the growth of Araceae species. Araceae have an unique spadix inflorescence characteristic that protected by spatha. A study on Araceae in Batang Toru Forest Area has never been conducted, leaving the unknown status of the species diversity and distribuion. The aims of this study was to invent Araceae in The Batang Toru Forest West Block area. The study was carried out from July to September 2018. The exploration method were used to invent the Araceae along the existing track path. There were 34 species of Araceae belonging to 8 genera found in the study side. All of species, 25 of them were lived as terrestrial and 9 of them were as epiphytes. The genera with the most species are Homalomena (12 species) and the least are Pothos (1 species). Araceae can lived on the soil, stones, trees, riparian and pond. Araceae can be found at various altitude with high air humidity (73-99 %) and warm temperature (17-27 °C). Araceae also like acid soil (4-7), warm (19-27 °C) with various humidity (1.5-8).
Inventarization of Zingiberaceae in The West Block Batang Toru Forest of North Tapanuli North Sumatra Nursahara Pasaribu
International Journal of Ecophysiology Vol. 3 No. 2 (2021): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v3i2.10097

Abstract

Zingiberaceae is one of the dominating plant family in West Block, Batang Toru forest region. According to preliminary survey, the forest is inhabited by many species of Zingiberaceae while information on its species richness is still limited. The aim of the study was to collect the species of Zingiberaceae in West Block, Batang Toru forest region, conducted from July to September 2018. Inventarization was conducted using exploration method, by exploring along designated tracking ways. The study found 18 species of Zingiberaceae belonging to 10 genera was obtained, two of them were Alpinia hansenii and Boesenbergia belalongensis were new record in Sumatra. From all species that was found, two species were known to live as epiphytes and the other 16 were terresterials. Zingiberaceae occur in varying habitats, starting from forest edge, open area with optimum sunlight and inside forest floor. The most species found belong to Globba and Amomum.Batang Toru Forest
LEJEUNEACEAE (SUBFAMILY: LEJEUNEOIDEAE) OF MOUNT SIBUATAN, NORTH SUMATRA, INDONESIA Ferdinand Susilo; Nursahara Pasaribu; Syamsuardi Syamsuardi; Etti Sartina Siregar
Floribunda Vol. 7 No. 2 (2023): Floribunda April 2023
Publisher : PTTI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32556/floribunda.v7i2.2023.411

Abstract

Lejeuneaceae (Subfamily: Lejeuneoideae) of  Mount Sibuatan, North Sumatra, Indonesia. Information on the local diversity of the subfamily Lejeuneoideae in North Sumatra, Indonesia, is still less reported, especially in Mount Sibuatan. This study aimed to collect, explore and describe the morphological characters and obtain the diversity of the subfamily Lejeuneoideae in the Mount Sibuatan forest area, North Sumatra. Nineteen species of this subfamily are reported, comprising eight genera: Cheilolejeunea, Cololejeunea, Colura, Diplasiolejeunea, Drepanolejeunea, Lejeunea, Metalejeunea, and Pycnolejeunea.. One species, namely Drepanolejeunea pentadactyla, is reported as new record for Sumatra. Identification key to species and pictures of species newly recorded is provided.
Co-Authors Agus Salim Harahap Albert Pasaribu etti sartina siregar Ferdinand Susilo Jhon Marthali Simamora M Zaidun Sofyan Novia Wulandari Tarigan Pinta Omas Pasaribu Retno Widhiastuti Syamsuardi Syamsuardi