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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Indonesian Journal of Forestry Research Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) REINWARDTIA Jurnal Penelitian Sosial dan Ekonomi Kehutanan Journal of Science Innovare Indonesian Journal of Applied Environmental Studies Eduvest - Journal of Universal Studies IIJSE Reinwardtia Indonesian Journal of Forestry Research
Dolly Priatna
Universitas Pakuan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology Neuroscience Social Sciences

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Differences of terrestrial mammal species diversity between natural forest and edge forest areas in Batutegi Protected Forest, Lampung, Indonesia Robithotul Huda; Yossa Istiadi; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 1, No 1 (2020): Volume 1 Number 1 April 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v1i1.1973

Abstract

This research is an explorative quantitative survey by testing differences in species of terrestrial mammals found in natural forest (core) and edge forest (ecoton) areas. The data collection was obtained by using camera traps installed for 3 months based on a grid cell 2 x 2 km, with a total of 16 camera traps placed in core area and another 17 were in ecotone. The object of this research was medium (0.3 kg) to large terrestrial mammals. The t test was used to determine the differences the species diversity of mammals between two research areas. The study shows that there are 22 species of terrestrial mammals with a total of 552 individuals, which is distributed in both research areas. In the core area there are 18 species with 237 individuals, while in the ecotone there are 18 species with 315 individuals. Analyses the species richness index was 17.8171 for the core area while 17.8262 for the ecotone area. Similarity index in both study areas ranged from 0.7106 to 1. While the value of diversity index (Shannon-Wiener) in the core area H '= 2.2038 and in the ecotone area H' = 2.0541. Three species with the greatest relative abundance values are Porcupine (Hystrix brachyura), Barking Deer (Muntiacus muntjak), and Wild Boar (Sus scrofa). Based on the t tests of the two research areas, which are core area and ecotone, obtained tcount 0.41365 (p 0.05), it can be interpreted that the diversity of terrestrial mammals species in the core and ecotone areas is not the same.Penelitian ini merupakan penelitian kuantitatif survei eksploratif dengan melakukan pengujian perbedaan terhadap jenis mamalia teresterial yang ditemukan di wilayah hutan alam (inti) dan wilayah hutan tepi (ekoton). Pendataan mamalia teresterial menggunakan camera trap yang dipasang selama 3 bulan berdasarkan grid cell 2 x 2 km, dengan 16 camera trap dipasang di areal inti dan 17 lainnya di ekoton. Objek penelitian adalah mamalia teresterial berukuran sedang (0,3 kg) hingga mamalia besar. Uji t digunakan untuk menentukan perbadaan keragaman jenis mamalia teresterial pada dua areal penelitian. Hasil penelitian menunjukkan terdapat 22 jenis mamalia teresterial dengan total 552 individu, yang tersebar di kedua areal penelitian. Pada areal inti terdapat 18 jenis dengan 237 individu, sedangkan pada areal ekoton ditemukan 18 jenis dengan 315 individu. Analisis indeks kekayaaan jenis menunjukkan nilai 17,8171 untuk areal inti dan 17,8262 untuk areal ekoton. Indeks kemerataan pada kedua areal penelitian berkisar antara 0,7106 hingga 1.  Sedangkan nilai indeks keragaman (Shannon-Wiener) pada areal inti H = 2,2038 dan pada areal ekoton H= 2,0541. Tiga jenis mamalia teresterial dengan kelimpahan relatif terbesar yaitu Landak (Hystrix brachyura), Kijang (Muntiacus muntjak), dan Babi hutan (Sus scrofa). Berdasarkan uji beda terhadap dua areal penelitian yaitu areal hutan alam (areal inti) dan areal tepi hutan (ekoton) didapatkan thitung 0,41365 (p 0,05), maka dapat diartikan bahwa keragaman jenis mamalia teresterial di areal inti dan ekoton tidak sama.
The role of the parties in mangrove ecosystem recovery in Juntinyuat Coast, West Java, Indonesia Muhamad Hasan; Dolly Priatna; Yossa Istiadi
Indonesian Journal of Applied Environmental Studies Vol 3, No 2 (2022): Volume 3 Number 2 October 2022
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v3i2.5120

Abstract

Coastal abrasion is a problem that needs to be addressed thoroughly. If not properly managed, coastal abrasion can lead to other environmental issues, such as damage to mangroves and coastal ecosystems. The local government is actively carrying out mangrove ecosystem restoration program to conserve the coastal ecology by involving related agencies, industries, and the community surrounding the Juntinyuat coastal area. The focus of this research is to find out the planning, implementation, and monitoring carried out in relation to the restoration of the mangrove ecosystem based on the involvement of the parties in overcoming coastal abrasion on the coast of Juntinyuat, Indramayu Regency, West Java. Data were collected by conducting observations, interviews, and documentation to the community and the parties involved in restoring the mangrove ecosystem on the Juntinyuat coast. The results showed that mangrove ecosystem damage in the coastal area of Juntinyuat generates a high level of abrasion. The damage caused by abrasion threatens settlements, ponds, and agricultural land, as well as threatens the gas and oil pipelines of Pertamina Gas in the West Java operation area (Pertagas OWJA). There is a relationship between the critical condition of the mangrove ecosystem in the Juntinyuat coastal area and the initiation of efforts to restore the mangrove ecosystem. The initiation of mangrove ecosystem restoration arose from the critical condition of mangroves, which necessitates careful planning to restore damaged mangrove conditions. Related parties concerned with the preservation of the mangrove ecosystem subsequently coordinate to plan the mangrove ecosystem restoration program on the Juntinyuat coast. The mangrove ecosystem restoration was conducted after an initial survey in mid-2014. The role of the parties in planning, implementing, and monitoring the restoration of the mangrove ecosystem is running well and maximally with a clear division of duties and responsibilities. Currently, the results of the restoration of the mangrove ecosystem on the Juntinyuat coast can be felt together with the denser mangrove cover, reducing the abrasion impact, and making it a mangrove ecotourism area. In the future, it is necessary to form a coordinating team for the strategy of mangrove ecosystem management at the regency and sub-district levels to synergize policies and programs for managing mangrove ecosystems. Empowerment activities need to be carried out intensively to encourage a change in the role of mangrove management. 
Climate change and its implications on wildlife conservation Dolly Priatna; Kathryn Anne Monk
Indonesian Journal of Applied Environmental Studies Vol 4, No 2 (2023): Volume 4 Number 2 October 2023
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v4i2.9661

Abstract

The Intergovernmental Panel on Climate Change (IPCC) Synthesis Report, released nearly a year ago, summarized five years of reports on global temperature rises, fossil fuel emissions and climate impacts and emphasised that there was “a rapidly closing window of opportunity to secure a liveable and sustainable future for all.”  It demonstrated an undeniable scientific consensus about the urgency of the climate crisis, its primary causes, its current devastating impacts – especially on the most climate vulnerable regions – and the irreversible harm that will occur to both the natural world and human society if warming surpasses 1.5°C, even temporarily. For Indonesia, climate change poses a formidable challenge for its people and its rich terrestrial and marine biodiversity that encompasses such a diverse array of ecosystems ranging from lush rainforests and dry savannas to extensive swamps and coral reefs. As the world's fourth most populous nation and the biggest archipelagic country in the world, Indonesia consists of some 17,000 islands, with over 8,000 km of coastline and is therefore extremely vulnerable to the impacts of global climate change. The nation's rich biodiversity, encompassing iconic species such as the Sumatran tiger, orangutan, and Komodo dragon, is intricately linked to the health of its ecosystems. Rising temperatures, changing precipitation patterns, and the increasing frequency of extreme weather events disrupt these ecosystems, leading to shifts in species composition and distribution.
Think Globally, Act Locally publishing amidst global summits Dolly Priatna; Kathryn A. Monk
Indonesian Journal of Applied Environmental Studies Vol 2, No 2 (2021): Volume 2 Number 2 October 2021
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v2i2.4242

Abstract

We are very pleased to present InJAST Volume 2 Number 2 October 2021 at this exciting time for national and global focus on applied environmental studies. This latest edition contains reviews and research articles such as Traditional knowledge of biodiversity in the community surrounding Giam Siak Kecil-Bukit Batu Biosphere Reserve, Riau, Indonesia” and Overview and evaluation of Indonesia's water resources management policies for food security”. In addition, our guest editorial explores the topic of Government, private, and local communities in ecosystem restoration governance and practices”. This editorial reminds us all that we are now in the first year of the UN Decade on Ecosystem Restoration (2021-2030), which challenges everyone to massively scale up restoration efforts focussed on our degraded ecosystems.
An evaluation of a community-based forest restoration programme in Gunung Gede Pangrango National Park, West Java, Indonesia Tintin Retno Pramesti; Rita Retnowati; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 1, No 2 (2020): Volume 1 Number 2 October 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v1i2.2213

Abstract

Forest restoration is needed to improve the condition of degraded ecosystems and boost up the ecological services. The existence of forest areas, especially in Indonesia, cannot be separated from the livelihoods of the people living around them. The purpose of this study was to evaluate whether the feasabiluty of the community-based forest restoration programme, implemented by the Gunung Gede Pangrango National Park Agency (BBGGPNP) and its partners, is feasible and can support efforts to restore forest ecosystem functioning and build community independence in managing the forest ecosystem. This study used the Context, Input, Process and Product (CIPP) method. This is an evaluation model which provides an analytical and rational basis for programme decision-making, based on a cycle of planning, structuring, implementing and reviewing and revising decisions, examined through a different aspect of evaluation context, input, process and product evaluation. Data were obtained from field observations, interviews and document analysis. Aspects of the programme ‘Context were found to be categorized as good and can become the basis for programme implementation, Programme ‘Inputs were also determined to be good, and fulfilled the criteria required to support the achievement of programme objectives. The ‘Process aspects were found to be sufficient, with key areas for improvement included the need for better coordination with partners and the need to respond to technical restoration requirements by adjusting the area of land to be restored, the number of trees to be planted, and by considering the technical rule of restoration. The ‘Product aspect of the programme were shown to be good, is shown by the achievement of the target amount and growth of trees and the increased capacity of human resources as well as the development of independent businesses in the ex-encroachers who were the programme participants. Based on these results, it can be concluded that the community-based forest restoration programme such as conducted by the GGPNP Agency is feasible and can be implemented in similar sites.Restorasi hutan diperlukan untuk memperbaiki fungsi ekosistem hutan yang terdegradasi. Keberadaan kawasan hutan, khususnya di Indonesia, tidak dapat dipisahkan dengan penghidupan masyarakat yang tinggal di sekitarnya. Tujuan dari penelitian ini adalah untuk mengevaluasi apakah program restorasi hutan berbasis pemberdayaan masyarakat yang dilaksanakan oleh Balai Besar Taman Nasional Gunung Gede Pangrango (BBTNGGP) bersama mitranya, layak serta dapat mendukung upaya pemulihan ekosistem dan membangun kemandirian masyarakat. Penelitian ini menggunakan metode CIPP, yaitu model evaluasi pada aspek Context, Input, Process dan Product. Data diperoleh dari hasil observasi lapangan, wawancara dan analisa dokumen. Berdasarkan analisis data, dapat disimpulkan bahwa program restorasi hutan berbasis pemberdayaan masyarakat layak untuk diterapkan sebagai upaya memulihkan ekosistem dan membangun kemandirian masyarakat di sekitar hutan. Aspek Konteks program berkategori baik dan dapat menjadi dasar utama pelaksanaan program, Aspek Input program baik, telah memenuhi kriteria yang mendukung tercapainya tujuan program, Aspek Proses berkategori cukup, perlu melakukan koordinasi yang lebih baik dengan pihak mitra untuk lebih berkomitmen dan perlu untuk melakukan penyesuaian antara target luasan lahan yang direstorasi dengan jumlah pohon yang ditanam dengan mempertimbangkan aturan teknis restorasi. Aspek Produk berkategori baik ditunjukkan dengan tercapainya target jumlah dan pertumbuhan pohon dan meningkatnya kapasitas SDM serta terbangunnya usaha mandiri pada masyarakat eks perambah yang menjadi peserta program.
Carrying capacity analysis of nature tourism at Selabintana, Gunung Gede Pangrango National Park, West Java Andriyatno Sofiyudin; Rosadi Rosadi; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 2, No 2 (2021): Volume 2 Number 2 October 2021
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v2i2.3678

Abstract

Selabintana management area is one of the nature tourism areas in the Gunung Gede Pangrango National Park (GGPNP) which located in Sukabumi District, West Java. Within the management area which covers 2,547.93 ha, there is a camping ground and waterfall which both are the most attracted for visitors. Efforts are needed to harmonize nature tourism activities with conservation mission, so that visitors can enjoy but the natural environment is maintained. The objective of this research is to determine the carrying capacity for daily tourism and camping activities by considering the aspect of physical, environmental and management aspects. The survey conducted through interviews and questionnaires to 62 tourists, traders and managers of the national park area. The data were analyzed using the carrying capacity assessment method developed by Cifuentes, i.e. calculating the Physical Carrying Capacity (PCC), Real Carrying Capacity (RCC), and Effective Carrying Capacity (ECC). As a result, EEC for daily tourism is 84 visitors/day  (PCC RCC ECC with a score of 3,269 98 84), while EEC for camping is 60 visitors/day (PCC RCC with a score of 2,155 69 60). Thus, carrying capacity of nature tourism activities in conservation areas can be calculated based on physical carrying capacity, real carrying capacity, and effective carrying capacity.Kawasan pengelolaan Selabintana merupakan salah satu areal wisata alam yang ada di Taman Nasional Gunung Gede Pangrango (TNGGP) yang terletak di Kabupaten Sukabumi, Jawa Barat. Di dalam areal pengelolaan yang luasnya 2.547,93 ha terdapat camping ground dan air terjun yang merupakan daya tarik utama yang bagi para pengunjung.  Diperlukan adanya upaya untuk menyelarasakan kegiatan wisata alam dengan misi konservasi, agar pengunjung  dapat menikmati  namun lingkungan alam tetap terjaga. Tujuan dari penelitian ini adalah menentukan carrying capacity untuk kegiatan wisata harian dan berkemah dengan mempertimbangkan aspek fisik, lingkungan dan manajemen. Survey dilakukan melalui interview dan kuisioner terhadap 62 wisatawan, pedagang dan pengelola kawasan taman nasional. Data dianalisis dengan metode penilaian carrying capacity yang dikembangkan oleh Cifuentes, yaitu menghitung Daya Dukung Fisik (PCC), Daya Dukung Ril (RCC), serta Daya Dukung Efektif (ECC). Sebagai hasil, EEC untuk wisata harian adalah 84 pengunjung/hari (PCC RCC ECC dengan skor 3.269 98 84), sedangkan EEC untuk berkemah adalah 60 pengunjung/hari (PCC RCC dengan skor 2.155 69 60). Jadi, carrying capacity dalam kegiatan wisata alam di dalam kawasan konservasi dapat ditentukan berdasarkan daya dukung fisik, daya dukung riil, dan daya dukung efektif.
Seed briquette composition for the direct seeding of Gmelina Gmelina arborea Roxb. Andreas Therapy; Dolly Priatna; Dede Jajat Sudrajat
Indonesian Journal of Applied Environmental Studies Vol 1, No 1 (2020): Volume 1 Number 1 April 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v1i1.1970

Abstract

The study of the effect of briquette composition on the seedling survival and growth of Gmelina in the field with the Randomized Group Design (RGD) experimental method. The parameters observed in the seed briquette composition test in the field were seedling diameter, seedling height and life percentage. The data were analyzed by Analysis of Variance (ANOVA) and Duncan's Test using SAS and SPSS programmes to determine the success of the seed briquette composition test. The composition of seed briquette has a significant effect on the survival percentage and growth of direct seeding Gmelina in the field. The application of the composition of B-5 with land preparation in the form of cleaning gives the best percentage of life and growth of Gmelina seedlings. This composition also gave a high growth of 45.29 cm, a diameter of 5.16 cm and a percentage of life of 58.33%. The composition of the B-5 seed briquettes has a proportional composition of the main ingredients in the form of soil and compost which is 20% and 40% as a growing medium and a source of nutrition for Gmelina seedling growth.Penelitian  tentang  pengaruh  komposisi briket terhadap  persen hidup serta  pertumbuhan  Gmelina  di lapangan  dengan  metode eksperimen Rancangan  Acak Kelompok (RAK). Parameter yang diamati pada uji komposisi briket benih di lapangan adalah diameter semai, tinggi semai dan persentase hidup. Data dianalisis dengan Analisis Ragam dan Uji Duncan dengan menggunakan program SAS dan SPSS untuk mengetahui  keberhasilan dari uji komposisi briket benih. Komposisi briket benih berpengaruh  nyata  terhadap persentase hidup dan pertumbuhan direct  seeding  Gmelina di lapangan.  Penerapan komposisi B-5 dengan persiapan lahan berupa pembersihan memberikan persentase hidup dan pertumbuhan semai Gmelina terbaik. Komposisi ini juga memberikan pertumbuhan tinggi sebesar 45,29 cm, diameter sebesar 5,16 cm dan persen hidup sebesar 58,33%. Komposisi briket benih B-5 memiliki komposisi bahan utama berupa tanah dan kompos yang proporsional yaitu sebesar 20% dan 40% sebagai media tanam dan sumber nutrisi untuk pertumbuhan semai Gmelina.
Analysis of the determinants and typology of hydrometeorological disaster in Sukajaya Subdistrict, Bogor Regency, West Java, Indonesia Yossa Istiadi; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 2, No 1 (2021): Volume 2 Number 1 April 2021
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v2i1.3113

Abstract

The objective of this research is to determine the factors as a typology of hydrometeorological disasters. The research method employed is post-disaster survey activities through hypothetical descriptions from October to December 2020. The analysis technique uses factor analysis on five variables, namely runoff, infiltration, slope, land cover, and infrastructure. The data retrieval obtained nine areas of landslide disaster points along 20 kilometers from Kiarapandak Village to Cisangku Village, Sukajaya Subdistrict, Bogor Regency, one of which were the areas affected by landslides in January 2020. From the factorial analysis results, it was found that the five variables above were suitable as a factor for determining disaster based on correlation values (r), that includes Factor 1 which is the variable of land slope (0.855) and the infrastructure variable (0.872). Factor 2 is water infiltration (0.928), water runoff (0.269), and land cover (0.717). In conclusion, the typology of hydrometeorological disasters is distinguished based on two determinants, firstly the physical construction of land, slopes, as well as infrastructure of road and river. Secondly,  factors of water flow, water infiltration, runoff, and land cover.Tujuan penelitian adalah membuat determinasi faktor-faktor sebagai tipologi kebencanaan hidrometeorologi. Metode penelitian melalui kegiatan survey pasca bencana melalui deskripsi hipotetik pada bulan Oktober-Desember 2020. Teknik analisis menggunakan analisis faktor pada 5 (lima) variabel yaitu limpasan, resapan, kemiringan, tutupan lahan, dan infrastruktur. Pengambilan data mendapatkan 9 (sembilan) daerah titik bencana longsor sepanjang 20 kilometer dari Desa Kiarapandak sampai Desa Cisangku, Kecamatan Sukajaya Kabupaten Bogor, yang merupakan wilayah terkena bencana longsor pada bulan Januari 2020. Dari hasil analisis faktorial diperoleh bahwa 5 (lima) variabel di atas layak dijadikan faktor determinasi kebencanaan berdasarkan nilai korelasi (r),  meliputi Faktor 1 adalah variabel kemiringan lahan (0,855) dan variabel infratruktur (0,872). Faktor 2 adalah resapan air (0,928), limpasan air (0,269), dan tutupan lahan (0,717). Kesimpulan, tipologi bencana hidrometeorologi dibedakan berdasarkan dua faktor determinasi yaitu pertama faktor konstruksi fisik lahan, kemiringan dan infratruktur jalan dan sungai, dan faktor aliran air, resapan air, limpasan, dan tutupan lahan.
Environmental security and resilience Indonesia and global challenges Kathryn A. Monk; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 3, No 1 (2022): Volume 3 Number 1 April 2022
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v3i1.5215

Abstract

Indonesia faces tremendous challenges from climate change, biodiversity loss, and wider social and economic change. These challenges need extensive interdisciplinary approaches enabling multiple perspectives from diverse stakeholders to be recognised and utilised. Collaboration between scientists, social scientists, and economists has never been so important. As  Christiana Figueres, former Executive Secretary, United Nations Framework Convention on Climate Change said:  The [global] challenges we face are massive, urgent, and interconnected. We need people across all sectors to pull together and move us to a bright and strong future. Theres no time to waste!”.  We are therefore happy to see the growing number of community-based participatory studies being submitted to InJAST and hope these will increase in future. There are exciting and vitally important issues to be tackled and supported by environmental managers to build the necessary environmental security and resilience, from direct conservation work to flood risk management and pollution control. Climate change drives or affects all these of course and has been, for example, one of the key drivers for Indonesias momentous plans to move the capital from the 256,000-hectare (990-square-mile) Jakarta on the north-western side of Java Island, the most populated island in the country, to the relatively undeveloped and biodiversity-rich East Kalimantan province on the island of Borneo. Climate change and immediate economic drivers in many parts of Indonesia also contribute to the annual toxic haze, which causes air quality to reach hazardous levels and creates major health, environmental and economic problems, especially in Sumatra and Java. Indeed, as of March this year, Riau province has already declared a state of emergency ahead of this years main fire season.
RECOVERY OF A LOWLAND DIPTEROCARP FOREST TWENTY TWO YEARS AFTER SELECTIVE LOGGING AT SEKUNDUR, GUNUNG LEUSER NATIONAL PARK, NORTH SUMATRA, INDONESIA Dolly - Priatna; Kuswata - Kartawinata; Rochadi - Abdulhadi
REINWARDTIA Vol 12, No 3 (2006): Vol. 12, No. 3
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2006.48

Abstract

PRIATNA, D.; KARTAWINATA, K.; ABDULHADI, R. 2004. Recovery of a lowland dipterocarp forest twenty two years after selective logging at Sekundur, Gunung Leuser National Park, North Sumatra, Indonesia. Reinwardtia 12 (3): 237–255. — A permanent 2-ha plot of lowland forest selectively logged in 1978 at Sekundur, Gunung Leuser National Park,which is also a Biosphere Reserve and a World Heritage Site, North Sumatra,was established and investigated in 1982. It was re-examined in 2000, where remeasurement and reidentification of all trees with DBH =10 cm were made.The areas of gap, building and mature phases of the canopy were also measured and mapped. Within this plot, 133 species, 87 genera and 39 families were recorded, with the total number of trees of 1145 or density of 572.5/ha. Euphorbiaceae was the richest family with 18 species (13.5 % of the total) and total number of trees of 248 (21.7 % of the total or density of 124 trees/ha.The most important families were Dipterocarpaceae with IV (Importance Value) = 52.0, followed by Euphorbiaceae with IV = 51.8. The most prevalent species was Shorea kunstleri (Dipterocarpaceae) with IV =24.4, followed by Macaranga diepenhorstii (Euphorbiaceae) with IV = 12.4. They were the species with highest density, 34 trees/ha and 23.5 trees/ha, respectively. During the period of 18 years there has been no shift in the richest families, most importantfamilies and most important species. Euphorbiaceae was the richest family and Dipterocarpaceae was the most important family, with Shorea kunstleri as the most important species with highest importance value throughout the period. The number of species increased from 127 to 133 with increase in density by 36.8% , from 418.5 trees/ha to 572.5 trees/ha. The mortality was 25.57 % or 1.4 % per year. The diameter class distribution indicated that the forest recovery has not been complete. Trees were small, comprising 67.6 % with diameters of 10-20 cm and only two trees had diameters of 100 cm, i.e.Melanochyla caesia and Lithocarpus urceolaris. Based on the basal area of all species, the logged-over forest at Sekundur is estimated to reach the situation similar to undisturbed primary forest in 56 years after logging, but on the basis of basal area of Dipterocarpaceae such condition could be achieved in 172 years.The canopy has not fully recovered and the complete closure of gaps is estimated to take 53 years since the logging started. The canopy consisted of gap phase (24.6 %), building phase (19.7 %) and mature phase (55.7 %). During the period of 18 years the tree mortality was 25.57 % or the rate of 1.4 %/year.Euphorbiaceae experienced the highest mortality, particularly among the trees with diameters of 10-20 cm.Mortality decreased with the increase of diameters.During the same period 520 new trees of 16 species were recruited.The densities of 53 % of the species experienced changes of only one tree or no changes at all.Drastic increase in tree population occurred in light demanding species,such as Baccaurea kunstleri, Endospermum diadenum,Mallotus penangensis,Sapium baccatum and Macaranga diepenhorstii .
Co-Authors Adi Susilo Adi Susilo Agus Priyono Kartono Ahmad Yanuar Ammy Nurwati Andreas Therapy Andriyatno Sofiyudin Annis Rachmawati Aris Hidayat Aris Munandar Asep Sadili Budi Saputro Christine A. Maggs Dadang Edi Rochaedi David Harries Dede Jajat Sudrajat Denny Endang Sukara Hartiningtias, Diny Hasan Maulana Herman Suparman Simanjuntak Ismayadi Samsoedin Ismayadi Samsoedin Ismayadi Samsoedin Kathryn A. Monk Kathryn A. Monk Kathryn Anne Monk Kuswata - Kartawinata Kuswata - Kartawinata, Kuswata - LILIK BUDIPRASETYO Monk, Kathryn A Muhamad Hasan N. M. Heriyanto Naori Miyazawa Nur M HERIYANTO Nur Muhammad Heriyanto Pahlevi, Farhan Reza Pitra Panderi Purity Sabila Ajiningrum Rita Retnowati Robithotul Huda Rochadi - Abdulhadi Rochadi - Abdulhadi, Rochadi - Rosadi Rosadi Rosadi Rosadi Sata Yoshida Srie Rahayu SATA YOSHIDA SRIE RAHAYU Shujaul Mulk Khan Sri Wahyuni Sri Wahyuni Suci Adinda Rahmadia Suryanto Suryanto Suryanto Suryanto Sutanto Sutanto Tintin Retno Pramesti Wahju Widodo Wardana, Deni Sri Y. Purwanto YANTO SANTOSA Yossa Istiadi Yossa Istiadi Yuswandi Yuswandi