Garuda - Garba Rujukan Digital

KANDUNGAN KARBON DI HUTAN RAWA GAMBUT KAWASAN KONSERVASI PT NATIONAL SAGO PRIMA, KEPULAUAN MERANTI, RIAU Rosalina, Yusi; Kartawinata, Kuswata; Nisyawati, Nisyawati; Nurdin, Erwin; Supriatna, Jatna
Buletin Kebun Raya Vol 16, No 2 (2013): Buletin Kebun Raya Vol. 16 (2) Juli 2013
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar

This study was conducted to collect information regarding carbon storage, particularly the carbon stored in the aboveground biomass as well as in the peat soil. The study site was in a conservation area of the PT National Sago Prima belonging to the PT Sampoerna Agro Tbk. Group. The work was undertaken in January-February 2012. The total aboveground biomass and carbon storage in the research site indicates Â that the conservation area is a secondary peat swamp forest, with the biomass of 149.18 ton/ha and carbon stock of 70.12 ton C/ha. The aboveground biomass and carbon consisted of biomass and carbon of tree (83.97 ton/ha containing 39.47 ton C/ha, respectively), saplings (20.69 ton/ha containing 9.72 ton C/ha) and seedlings and undergrowth plants (0.03 ton/ha containing 0.01 ton C/ha), wood Â necromass (24.06 ton/ha containing 11.31 ton C/ha), and litter (20.44 ton/ha containing 9.61 ton C/ha). An allometric equation was developed for Pandanus atrocarpus Griff. providing an estimated total biomass and carbon of 5.16 ton/ha containing 2.42 ton C/ha. The underground C with the mean peat depth of 5.5 m, mean bulk density ofÂ 0.18 g/cm3, and the mean organic C of 46.6 % was 464.895,94 ton C/ha. In the entire conservation forest area of 541 ha the total aboveground biomassa and carbon storage was estimated to beÂ 80,708.64 ton and 37,934.00 ton C, while the total underground carbon was 238,96 million MT C.

KANDUNGAN KARBON DI HUTAN RAWA GAMBUT KAWASAN KONSERVASI PT NATIONAL SAGO PRIMA, KEPULAUAN MERANTI, RIAU Rosalina, Yusi; Kartawinata, Kuswata; Nisyawati, Nisyawati; Nurdin, Erwin; Supriatna, Jatna
Buletin Kebun Raya Vol 16, No 2 (2013): Buletin Kebun Raya Vol. 16 (2) July 2013
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar

This study was conducted to collect information regarding carbon storage, particularly the carbon stored in the aboveground biomass as well as in the peat soil. The study site was in a conservation area of the PT National Sago Prima belonging to the PT Sampoerna Agro Tbk. Group. The work was undertaken in January-February 2012. The total aboveground biomass and carbon storage in the research site indicates Â that the conservation area is a secondary peat swamp forest, with the biomass of 149.18 ton/ha and carbon stock of 70.12 ton C/ha. The aboveground biomass and carbon consisted of biomass and carbon of tree (83.97 ton/ha containing 39.47 ton C/ha, respectively), saplings (20.69 ton/ha containing 9.72 ton C/ha) and seedlings and undergrowth plants (0.03 ton/ha containing 0.01 ton C/ha), wood Â necromass (24.06 ton/ha containing 11.31 ton C/ha), and litter (20.44 ton/ha containing 9.61 ton C/ha). An allometric equation was developed for Pandanus atrocarpus Griff. providing an estimated total biomass and carbon of 5.16 ton/ha containing 2.42 ton C/ha. The underground C with the mean peat depth of 5.5 m, mean bulk density ofÂ 0.18 g/cm3, and the mean organic C of 46.6 % was 464.895,94 ton C/ha. In the entire conservation forest area of 541 ha the total aboveground biomassa and carbon storage was estimated to beÂ 80,708.64 ton and 37,934.00 ton C, while the total underground carbon was 238,96 million MT C.

FLORISTIC COMPOSITION AND STRUCTURE OF A PEAT SWAMP FOREST IN THE CONSERVATION AREA OF THE PT NATIONAL SAGO PRIMA, SELAT PANJANG, RIAU, INDONESIA Rosalina, Yusi; Kartawinata, Kuswata; Nisyawati, Nisyawati; Nurdin, Erwin; Supriatna, Jatna
REINWARDTIA Vol 14, No 1 (2014): Vol. 14 No. 1
Publisher : Research Center for Biology

We studied the floristic composition and structure of the logged-over peat swamp forest in theÂ PT National Sago Prima of PT Sampoerna Agro Tbk. group for future management of the conservation area that has beenÂ set aside by the company.Â In January - February 2012, 25 quadrats of 20 m x 20 m were laid out systematically along a transect,Â thus covering a sampled area of 1-ha.Â The results showed that the study site was a regenerating and developing secondary peat swamp forests having high plant species richness.Â The total number of species recorded was 73 species of 38 families, consisting of 49 species (30 families) of trees (DBH? 10 cm ), 42 species (24 families) of saplings (H > 1.5 m and DBH < 10 cm), and 41 species (27 families) of seedlings and undergrowth.Â Tree density was 550 individuals/ha, and total tree basal area was 18.32 m2. The Shannon-Wienerâs Diversity Index for trees was highÂ (3.05)Â Two tree species with the highest Importance Values (IV) were Pandanus atrocarpus (IV= 45.86 %) and Blumeodendron subrotundifolium (22.46Â %).Â The tree families with the highest IV were Pandanaceae (45.86), Myrtaceae (40.37), and Dipterocarpaceae (39.20). Forest structure dominated by trees with a diameter below 20 cm amounting to 408 trees/ha (74.05%). andÂ D and E strata with height of less than 20 m, and density of 431 trees/ha (78.36%). Jaccard Similarity index among species, showedÂ strong association between Pandanus atrocarpus and Blumeodendron subrotundifoliumÂ and based on this association combinedÂ with high IVs, the two parameters of speciesÂ characterized the forest, hence the forest could be designated as the Pandanus atrocarpus--Blumeodendron subrotundifolium association. Primary forest species with high economic values were still present in the forest. Eleven species can be included in the IUCN Red List, of which Shorea rugosa is in the category of Critically Endangered), Shorea tesymanniana Endangered and Â Gonystylus bancanus vulnerable, hence they shouldÂ be protected.

AKTIVITAS DAN PERGERAKAN LUTUNG MERAH (PRESBYTIS RUBICUNDUS MULLER) DI CAGAR ALAM TANJUNG PUTING KALIMANTAN TENGAH SUPRIATNA, JATNA
BERITA BIOLOGI Vol 2, No 5 (1979)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Keanekaiagaman primata Indonesia meiupakan suatu kekayaan yang tidak terdapat di negaia lain. Kawasan Indonesia mempunyai primata mulai dari yang berevolusi iendah yaitu Tarsius bancanus sampai yang berevolusi tihggi seperti orangutan (Portgopygmaeus). Beberapa primata ada yang bersifat endemik, seperti lutung meiah di Kalimantan (Davis1962, Medway 1970, Stott & Selsor 1961).Tempat hidup lutung meiah, yaitu pulau Kalimantan, pada dasa waisa sekaiang ini sedang giat dieksploitasi.Eksploitasi diketahui banyak menimbulkan kerugian terhadap penghuninya, misalnya adanya emigrasi dan kepunahan tidak langsung. Beberapa hewan telah menunjukan kelangkaan di daerah yang diekploitasi hutannya.Lutung merah sebagai hewan arboreal mungkin sekali akan terganggu oleh adanya eksploitasi hutan tersebut.Oleh karena kerusakan hutan mungkin akan berpengaruh terhadap tingkah laku lutung, maka penelitian mendasar terhadap hewan ini perlu dilakukan Untuk memulainya dilakukan penelitian awal dalam taraf pengamatan aktivitas, pergerakan dan beberapa segi tingkah laku lutung. Penelitian ini diharapkan dapat membantu cara pelestarian hewan ini.

Struktur Vegetasi dan Simpanan Karbon Hutan Hujan Tropika Primer DI Batang Toru, Sumatra Utara Onrizal, Onrizal; Ismail, Ismail; Perbatakusuma, Erwin A.; Sudjito, Herwasono; Supriatna, Jatna; Wijayanto, Iwan H.
JURNAL BIOLOGI INDONESIA Vol 5, No 2 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

ABSTRACTVegetation structure and carbon stock of primary tropical rain forest at Batang Toru, NorthSumatra. Deforestation and forest degradation contribute for 20 to 25 percent of annual totalcarbon dioxide (CO2) emissions and to be one of substantial factor of climate change or globalwarming. Avoided deforestation into carbon-market regime by reducing emission fromdeforestation and forest degradation (REDD) scheme has been agreed on COP 13 of UNFCCCthat was held in Bali on December 2007. REDD application need reliable scientific basic aboutthe amount of carbon storage in well managed natural forest. The aims of this research were todetect vegetation structure and to estimate aboveground biomass, carbon stock and CO2absorption of primary tropical rain forest at Key Biodiversity Area of Batang Toru ForestBlock, North Sumatra Province by existing allometric equation. We designed 20 sampling plotsof 20 x 20 m in two forest area, i.e. Aek Game-game forest and Aek Silemes forest. All trees 5 cmat diameter at breast height (dbh) and above were measure and identified. From the study, thedistribution of diameter class formed âLâ curve which mean an indication as balanced forest.The aboveground biomass of the forest is 544.4 to 583.0 t/ha in Aek Silemes forest and 604.5 to613.6 t/ha Aek game-game forest. It is equivalent with 272.2 to 291.5 t C/ha or 999.0 to 1,069.9 tCO2/ha in Aek Silemes forest and 302.2 to 306.8 t C/ha or 1,109.2 to 1,125.9 t CO2/ha in Aekgame-game forest. More of carbon stock (>46% for Aek Silemes forest and >58% for Aek gamegameforest) saved within dbh of trees 50 cm and above. Therefore, sustainable managementof forest ecosystem is very important to reduce CO2 emission from deforestation and forestdegradation and to improve the function of forest ecology and economy.Keywords: aboveground biomass, carbon stock, CO2, primary tropical rain forest, BatangToru-North Sumatra

Pre-Release Assessment for Javan Gibbon (Hylobates moloch) in The Javan Gibbon Center, Mount Gede Pangrango National Park Ario, Anton; Kartono, Agus Priyono; Prasetyo, Lilik Budi; Supriatna, Jatna
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 1 (2019): April 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Preparation for gibbons before being released into their habitat is crucial. Thus, there is a need for readiness assessment of Javan gibbon with several criteria derived from other species of gibbons to determine individual readiness. Pre-release assessment study for Javan gibbon (Hylobates moloch) had been conducted in January – February 2014, November – December 2014, and March-April 2016 in the Javan Gibbon Center, Mount Gede Pangrango National Park, West Java, Indonesia. The objective of this research was to assess the readiness of Javan gibbon behavior prior to release. Data collection was conducted by focal animal sampling method with 5-minute interval recording time and ad libitum method. The average time allocations of Javan Gibbon activities were as follow: feeding (18.17±3.34%); moving (22.34±0.53%); resting (46.24±3.84%); socializing (10.13±4.33%); sexual activity (0.59±0.58%); and vocalizing (2.54±0.88%). The similarities of activity allocation from this study compared by wild Javan gibbons data found as follows: feeding by 33.03%, moving by 90.97%, resting by 61.52%, socializing by 38.09%, vocalizing by 75.02%, and sexual by 44.24%. Based on readiness assessment of 11 Javan gibbons, 3 individuals were considered almost ready for release, while 8 individuals were considered ready. The assessment of behaviors criteria for the readiness of Javan gibbons before release has not existed before. The results of this research are important as a recommendation for the management of wildlife rehabilitation and as a guideline in implementing the rehabilitation and reintroduction program of Javan gibbons.

STRUKTUR VEGETASI DAN SIMPANAN KARBON HUTAN HUJAN TROPIKA PRIMER DI BATANG TORU, SUMATRA UTARA Onrizal, Onrizal; Ismail, Ismail; Perbatakusuma, Erwin A.; Sudjito, Herwasono; Supriatna, Jatna; Wijayanto, Iwan H.
JURNAL BIOLOGI INDONESIA Vol 5, No 2 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v5i2.3197

ABSTRACTVegetation structure and carbon stock of primary tropical rain forest at Batang Toru, NorthSumatra. Deforestation and forest degradation contribute for 20 to 25 percent of annual totalcarbon dioxide (CO2) emissions and to be one of substantial factor of climate change or globalwarming. Avoided deforestation into carbon-market regime by reducing emission fromdeforestation and forest degradation (REDD) scheme has been agreed on COP 13 of UNFCCCthat was held in Bali on December 2007. REDD application need reliable scientific basic aboutthe amount of carbon storage in well managed natural forest. The aims of this research were todetect vegetation structure and to estimate aboveground biomass, carbon stock and CO2absorption of primary tropical rain forest at Key Biodiversity Area of Batang Toru ForestBlock, North Sumatra Province by existing allometric equation. We designed 20 sampling plotsof 20 x 20 m in two forest area, i.e. Aek Game-game forest and Aek Silemes forest. All trees 5 cmat diameter at breast height (dbh) and above were measure and identified. From the study, thedistribution of diameter class formed ?L? curve which mean an indication as balanced forest.The aboveground biomass of the forest is 544.4 to 583.0 t/ha in Aek Silemes forest and 604.5 to613.6 t/ha Aek game-game forest. It is equivalent with 272.2 to 291.5 t C/ha or 999.0 to 1,069.9 tCO2/ha in Aek Silemes forest and 302.2 to 306.8 t C/ha or 1,109.2 to 1,125.9 t CO2/ha in Aekgame-game forest. More of carbon stock (>46% for Aek Silemes forest and >58% for Aek gamegameforest) saved within dbh of trees 50 cm and above. Therefore, sustainable managementof forest ecosystem is very important to reduce CO2 emission from deforestation and forestdegradation and to improve the function of forest ecology and economy.Keywords: aboveground biomass, carbon stock, CO2, primary tropical rain forest, BatangToru-North Sumatra

Habitat Suitability of Release Site for Javan Gibbon (Hylobates moloch) in Mount Malabar Protected Forests, West Java Anton Ario; Agus Priyono Kartono; Lilik Budi Prasetyo; Jatna Supriatna
Jurnal Manajemen Hutan Tropika Vol. 24 No. 2 (2018)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1276.978 KB)

The javan gibbon reintroduction program requires assessment of suitable habitat within release sites to assure the survival of released gibbons. We studied habitat suitability for javan gibbon beginning in April 2017, extending to June 2017 in the Mount Malabar Protected Forest (MMPF), West Java. The objectives of this study were to analyze the habitat suitability of the release site for javan gibbon in MMPF. Analysis of Geographical Information System (GIS) and Principal Component Analysis (PCA) approach were used to obtain habitat suitability values. Habitat suitability variables measured are elevation, Normalized Differential Vegetation Index (NDVI), Bareness Soil Index (BSI), distance from the road, farming, settlement, and open field. We found suitability valued areas consisting of high suitability covered 2,009.23 ha (22.31%), moderate suitability covered 2,497.46 ha (27.73%), and low suitability covered 4.499,65 ha (49.96%), from a total area ± 8.894,47 ha in MMPF.

Pre-release assessment of Javan Gibbon (Hylobates moloch) during acclimatization phase in Mount Malabar Protected Forest, West Java Anton Ario; Agus Priyono Kartono; Lilik Budi Prasetyo; Jatna Supriatna
Jurnal Ilmu Lingkungan Vol 17, No 2 (2019): Agustus 2019
Publisher : School of Postgraduate Studies, Diponegoro Univer

Pre-release aassessment study of Javan gibbon (Hylobates moloch) in gradually during acclimatization phase in the Mount Malabar Protected Forest, West Java. We studied eleven Javan gibbons in February-March 2014, February-March 2015, March-April 2015, and July-August 2016. The purpose of this study was to assess the readiness of Javan gibbon behavior in acclimatization phase prior to release. Data collection was conducted by focal animal sampling method with 5-minute interval recording time and ad libitum method. The average time allocation of Javan gibbon activities were the following: feeding 16.82±1,28%; moving 20.01±3.14%; resting 47.64±1.31%; socializing 12.88±2.92%; sexual 0.69±0.54%; and vocalizing 1.96±0.59%. We compared activity allocation data from this study and those from wild Javan gibbons and found similarities as follows: 55.30% at a family of Jowo-Bombom-yani-Yudi, 51.42% at a pair of Moly-Nancy, 44.57% at a pair of Robin-Moni and 62.19% at a family of Mel-Pooh-Asri. Based on readiness assessment of 11 Javan gibbons, 3 were considered almost ready for release, while 8 individuals were considered ready.

FLORISTIC COMPOSITION AND STRUCTURE OF A PEAT SWAMP FOREST IN THE CONSERVATION AREA OF THE PT NATIONAL SAGO PRIMA, SELAT PANJANG, RIAU, INDONESIA Yusi Rosalina; Kuswata Kartawinata; Nisyawati Nisyawati; Erwin Nurdin; Jatna Supriatna
REINWARDTIA Vol 14, No 1 (2014): Vol. 14 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v14i1.416

We studied the floristic composition and structure of the logged-over peat swamp forest in the PT National Sago Prima of PT Sampoerna Agro Tbk. group for future management of the conservation area that has been set aside by the company. In January - February 2012, 25 quadrats of 20 m x 20 m were laid out systematically along a transect, thus covering a sampled area of 1-ha. The results showed that the study site was a regenerating and developing secondary peat swamp forests having high plant species richness. The total number of species recorded was 73 species of 38 families, consisting of 49 species (30 families) of trees (DBH? 10 cm ), 42 species (24 families) of saplings (H > 1.5 m and DBH < 10 cm), and 41 species (27 families) of seedlings and undergrowth. Tree density was 550 individuals/ha, and total tree basal area was 18.32 m2. The Shannon-Wiener’s Diversity Index for trees was high (3.05) Two tree species with the highest Importance Values (IV) were Pandanus atrocarpus (IV= 45.86 %) and Blumeodendron subrotundifolium (22.46 %). The tree families with the highest IV were Pandanaceae (45.86), Myrtaceae (40.37), and Dipterocarpaceae (39.20). Forest structure dominated by trees with a diameter below 20 cm amounting to 408 trees/ha (74.05%). and D and E strata with height of less than 20 m, and density of 431 trees/ha (78.36%). Jaccard Similarity index among species, showed strong association between Pandanus atrocarpus and Blumeodendron subrotundifolium and based on this association combined with high IVs, the two parameters of species characterized the forest, hence the forest could be designated as the Pandanus atrocarpus--Blumeodendron subrotundifolium association. Primary forest species with high economic values were still present in the forest. Eleven species can be included in the IUCN Red List, of which Shorea rugosa is in the category of Critically Endangered), Shorea tesymanniana Endangered and Gonystylus bancanus vulnerable, hence they should be protected.

Title

Found 23 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 23 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 23 Documents
Search