Dissertation Seminar : Determining Movement and Home Range of Sumatran Tigers, Panthera tigris sumatrae Pocock, 1929 Based on Monitoring of GPS Collars

Dolly Priatna, Yanto Santosa, Lilik B. Prasetyo, Agus P. Kartono


 Although translocation has been used in mitigating human-carnivores conflict for decades, few studies conducted on behavior ecology of post released animals. In this study we examine the movement and home range as well as determine the type of land cover which most frequently used by translocated tigers. Between July 2008 and December 2010 we translocated six Sumatran tigers and released them 741,350 km from their capture sites. All tigers were fitted with global positioning system (GPS) collars. The collars were set to fix 24-48 location coordinates per day. The mean distance moved by the tigers varies from 2.8 to 4.0 km per day. The female moved further than the males and statistically there was a significant difference between the distance they moved. In general, there was no difference to the mean distance traveled between day-time and night-time among males, but the female traveled longer in the day-time than night-time. The length of time needed by each tiger for establishing home range was significantly affected by the abundance of local tigers already in the area. The home range size of each individual tiger estimated using 100% minimum convex polygon (MCP) varies between 67.1 km2 and 400 km2 for males while for the female was 610.3 km2.  Estimations of home range size using 95% fixed kernel (FK) methods were between 37.5 km2 and 376.8 km2. Age and sex of translocated tigers as well as the abundance of local tigers and their main prey species did not affect the size of the home range of  translocated tigers. The translocated tigers tend to select the majority of land cover type within the landscape as their main habitat, but the forest availability within the landscape remains essensial for their survival. Despite being preliminary the finding of this study highlight the conservation value of tiger translocation and have provide valuable information for improving future translocation of rescued tigers, as this study was the first ever conducted in Sumatra.

Keywords: GPS collars, habitat selection, home range, movement, Sumatran tiger, translocation 

Seminar paper can be download here [doc]

Corresponding author : Dolly Priatna <Dolly.Priatna@zsl.org>

Master Thesis : Habitat Suitability Analysis of Maleo (Macrocephalon maleo) in Bogani Nani Wartabone National Park

Yakub Ambagau, Yeni A. Mulyani, Lilik Budi Prasetyo


Habitat degradation is the main factor of the declining population of maleo (Macrocephalon maleo). Due to the lack of information on habitat suitability for maleo, it is important to carry out this research in Bogani Nani Wartabone National Park (BNWNP). The objectives of this research are to determine habitat suitability model for maleo and to determine suitability degree of BNWNP as a habitat for maleo. The use of habitat suitability model resulting from this research will enable both in-situ and ex-situ maleo conservation. This research proposes logistic regression to predict probability of habitat suitability for maleo. Survey was conducted to determine the presence of maleo. Pseudo-absences were selected randomly based on grid 30 x 30 m. Eighty-four presences and pseudo-absences of maleo were recorded. Fifty percent of recorded data were used to build a predictive model and the rest were used to validate the model. Habitat requirements were analyzed and quantified from digital topographic maps, ASTER DEM and Landsat 7 ETM+. The predictive model of habitat suitability was developed using backward stepwise regression. This research showed that predictive model of habitat suitability for maleo was affected by elevation, normalized difference vegetation index and distance to river. This research also showed that the unsuitable habitat (193.188 Ha) is greater than the suitable habitat (68.483 Ha) and the very suitable habitat (25.444 Ha). (Seminar paper in pdf)

Keyword : habitat suitability, logistic regression, presences, pseudo-absences, predictive model, macrocephalon maleo

Corresponding Author : Yakub Ambagau <ambagau@yahoo.com>

Master Thesis: The Influence of Socio-economic Variables on Landuse and Landcover Change in Gunung Halimun Salak National Park.

Haryanto Yatap, Hardjanto & Lilik B.Prasetyo

Gunung Halimun Salak is one of national park in Indonesia, located in West Java and Banten Province.  In 2003, government has expanded its area by more than 70000 hectares.  It caused a lot of conflicts between local communities and national park officials.  Many case studies showed that the local communities has used the natural resources for construction materials, fuel wood, medicine, food, cultural needs, forages, hunting, handicraft, gold mining, agriculture land, and settlement.  There was clear evidence that in Gunung Halimun Salak National Park, during 15 years period (1989-2004), forest cover area decreased by more than 25%.


The objectives of the research are:

1) to identify socio-economic variables causing landuse and landcover change;

2) to estimate influence of key  socio-economic variables;

3) to estimate the need of agricultural land and settlement for local communities; and

4) to estimate the direct benefit value of the national park.

Selection of sampling location was used by stratified cluster sampling. Socio-economic data collected from interviews with 900 head of households which lived in 30 villages in and around the national park.  The technique of data processing analysis were done using spatial analysis, descriptive analysis, linear regression analysis, population pressure analysis, and substitution and market price analysis.

The result of analysis showed that the population growth, population density, land ownership, agricultural land and settlement expansion are the key variables that influenced landuse and landcover change.  The need of agricultural land was 0.54 hectares per person, and the direct benefit value of the national park was more than IDR 237 billion per year.

Keywords: socio-economic variable, landuse and landcover change, national park, stratified cluster sampling

Corresponding Author : Lilik B.Prasetyo (lbprastdp@yahoo.com)

Master Thesis Seminar : Amphibians dispersal in palm oil plantation landscape elements (case study on PT. Kencana Sawit Indonesia, South Solok District, West Sumatra).

Edwin Wira Pradana, Mirza Dikari Kusrini, Lilik Budi Prasetyo


High conservation value forest approach on palm oil sustainability management brings heterogeneity in landscape perspective, but ecologically it may susceptible  for amphibians community conservation, due to habitat fragmentation that may act as dispersal barrier, through matrix permeability and corridor effectiveness.  Objective scientific observation on impact of agricultural activity on amphibians dispersal could be used to help mitigation efforts. This research aimed to analyze amphibians diversity similarity on landscape elements, analyzing amphibians dispersal by proving amphibians diversity correlation with distance from core area on corridor and matrix, comparing direct/non direct link corridor to core area and upstream/downstream diversity, and distribution spread and dispersal ability at landscape elements. Visual Encounter Survey (VES) with transect design method was conducted in Core Area, matrix and corridor. Total 1055 individual Found at site consist 5 Family, 9 Genera and 27 species, there are no significantly different in amphibians diversity due to distance correlation to core area, direct/non direct link and upstream/downstream corridors but significant on core area-matrix distance correlation. Almost all forest specialist has limited distribution to core area  and corridor and aquatic species suggest capable to survive than terrestrial species through to dispersal ability in landscape element. corridors only effective working for aquatic species and habitat fragmentation  effect is vary in each species.


 Keywords: dispersal, amphibians community, landscape element, palm oil

 Corresponding author : pradana.edwin@gmail.com

Bachelor Thesis : Diversity & Spatial Distribution of Alien Species


Under supervision of AGUS HIKMAT and LILIK BUDI PRASETYO

Invasive alien plant species in a disturbed forest ecosystem could reduce composition of native vegetation, as such could threaten the biodiversity of the ecosystem. The process of invasion by alien plants has been reported to occur in several protected areas in Indonesia such as the Wasur National Park, Baluran National Park, and the Komodo National Park. One of the conservation area also allegedly invaded by alien plant species is Kamojang Natural Reserve Area. Thus, there is a need of research on the diversityand spatial distribution pattern of the invasive alien plant species in the area.

The research was conducted in July-August 2011 at the Kamojang Natural Reserve Area. The data collection of the invasive alien plants species’ diversity was conducted by analyzing the vegetations using double plots method. The identification of invasive alien plants species used references from Weber (2003) and ISSG (2005). The data collection of the spatial distribution pattern of invasive alien plants species was conducted by marking every observation plots using GPS and the result was then interpolated. The distributions of individual invasive alien plant species that are dominant were analyzed using linier regression analysis to acquire the invasive alien plants species’ influence toward its distance from the road.

The number of analyzed vegetation species identified comprises of 86 species from 50 families. The invasive alien plants species identified was 13 species which consist of 8 families: Ageratum conyzoides (Asteraceae), Rubus moluccanus (Rosaceae), Clidemia hirta (Melastomaceae), Cynodon dactylon (Poaceae), Panicum repens (Poaceae), Mimosa pudica (Fabaceae), Mimosa pigra (Fabaceae), Austroeupatorium inulifolium (Asteraceae), Passiflora edulis (Passifloraceae), Lantana camara (Verbenaceae), Mikania micrantha (Asteraceae), Piper aduncum (Piperaceae) and Ageratina riparia (Asteraceae). According to the index of Morisita and the result of IDW interpolation on dominant invasive alien plant species, it was found that the distribution’s pattern of the invasive alien plant species tend to clump except for A. inulifolium which have uniform distribution.

Invasive alien plant species are identified as many as thirteen species of 8 families with dominant species, namely A. inulifolium, A. riparia and L. camara.  Spatial distribution patterns of invasive alien plant species in Kamojang Natural Reserve Area tend to clump in relatively open forest conditions. The effect of distance from the road towards the the number of the invasive plant species distribution only occured to A. Inulifolium, while A. riparia and L. camara was not effected by the distance from the road.

Keywords:    Diversity, Spatial distribution pattern, Invasive alien plant species, Vegetation analysis, Interpolation.




Dissertation : Model of Policy on the Restoration of Conservation Forest Area

WAWAN GUNAWAN,  under supervision of  S. Basuni, A.Indrawan , L.B. Prasetyo, and H. Soedjito.

Forest restoration is urgently needed to overcome deforestation & forest degradation within forest conservation areas. This study was aimed to create a model of policy on the restoration of conservation forest areas, among others by (1) formulation of criteria of areas that urgently be restored, (2) formulation of criteria of sites or parts of conservation areas to be restored, (3) determination of reference for restoration, (4) determination of selected priority species, and (5) implemented the model.

It employed some methods including survey by interview using questionnaire, field observation and literature study. The research reveals that there were eight criterias on the aspect of importance and seven criteria of urgency for a conservation area to be restored. There were ten criterias of sites or parts of conservation area that urgently need restoration. Each of these criteria included the aspects of biology, social-economy, and culture. The dimensions of restoration references include the richness of endemic flora species and the parameter of vegetative horizontal structure taken from the ecosystems or bioregions that the same those to be restored. The species were selected in accordance with the reference species that are capable to live and grow in the sites urgently requiring restoration. According to the criteria of conservation forest area that needs urgent restoration, the area of Gunung Gede Pangrango National Park (GGPNP) is classified as Priority III. The top priority of sites or parts of area of GGPNP that need urgent restoration were commonly located in the outer parts/edges of GGPNP area that consist of submontaine ecosystem. There are 78 tree species in the natural forest vegetation types in the submontaine ecosystem of GGPNP that becomes the restoration reference. The number of selected priority species for restoration activity in GGPNP is 15 tree species. The highest priority of restoration activity/action for the GGPNP area was artificial restoration by enrichment planting with an involvement of community.

 Keywords: Model, policy, restoration, conservation forest

Corresponding Author : Wawan Gunawan <wgipb@yahoo.com>

Bachelor Thesis : Landslide Vulnerability Analysis With Applications of Geographic Information Systems (GIS) and Remote Sensing in Bogor Regency


Bogor Regency is one of the area with high landslide potential due to rainfall. High population growth and inappropriate spatial planning in Bogor regency were factors which led to increase risk of landslide. This risk would be more aggravated when community was completely unaware of and not responsive to the potential for landslides in the area. Related to this issue, it requires a comprehensive effort to reduce the risk of landslides, such as analysis of the vulnerability to landslides. The purpose of this study was to map the distribution of landslide prone areas in Bogor Regency and to evaluate the spatial pattern based on the landslide vulnerability in Bogor Regency.

The research was conducted in July – September 2011, with study sites for observation and data collection in Bogor, West Java. The materials used in the research are the images and maps of Bogor Regency in various layers. Landslide vulnerability was analysed based on the prediction model from Indonesian Center for Agricultural Land Resources Research and Development (ICALRD 2009). The parameters used to determine the level of vulnerability were the land cover, soil type, land slope, rainfall, geological formations and the vulnerability of ground motion. Each type of map was classified based on the scores, weighted and overlaid. Bogor Regency spatial pattern was then evaluated based on the Landslide Vulnerability Map.

Analysis based on the ICALRD (2009) Model of Vulnerability Landslide Prediction resulted in three classes of vulnerability to landslides in Bogor Regency, i.e. class of low vulnerability to landslides with an area of 94.991 ha (31.7%) covering 33 districts, class of middle vulnerability to landslides with an area of 173.309 ha (57.8% ) covering 36 districts and classes of high vulnerability to landslides with an area of 31.127 ha (10.396%) covering 28 districts. Results of the evaluation of spatial pattern indicated that some designated residential areas were located in areas with high vulnerability to landslides, which was not appropriate for uses as residential area. In addition, the evaluation also found utilization of areas which violated the designated spatial plan of Bogor Regency, in which conservation and protected forest areas with the function to protect the surrounding environment from landslide had been converted to residential area, plantations, ricefield and farm.

Keywords : Landslide vulnerability, land cover, spatial pattern

Lecture : Development of Advanced Synthetic Aperture Radar Technology for Earth Diagnosis

 by :

 Josaphat Tetuko Sri Sumantyo, Ph.D, Associate Professor

 Center for Environmental Remote Sensing, Chiba University


Synthetic Aperture Radar (SAR) is a multipurpose sensor that can be operated in all-weather and day-night time.  Conventionally, the SAR sensor has been operated in linear polarization with limited retrieved information.  In this research, we are developing Circularly Polarized Synthetic Aperture Radar (CP-SAR) sensor for unmanned aerial vehicle and small satellite for Earth diagnosis.  Comparing to linear polarized systems, the CP-SAR sensor has the advantage of compactness and low power requirement, since the transmission of CP microwave is not affected by the Faraday rotation effect in the ionosphere.  In this presentation, the applications of synthetic aperture radar images for disaster monitoring by using Differential Interferometric Synthetic Aperture Radar (DInSAR) technique are also introduced.

Venue : RS Rimbawan – Fakultas Kehutanan-IPB

Date : 26 January 2012

Time : 15.30 – 17.00

Contact person : Lilik Budi Prasetyo (08121335130)


Nana Mulyana has just passed in dissertation defense in front of external examiner (Prof. Budi Indra Setiawan & Prof.Hidayat Pawitan) & supervisor. Part of his dissertation has been published and can be downloaded here.



I Nengah Surati Jaya1),  Syaiful Daulay2), Mukalil2), Ayub Wosiri2), M Buce Saleh1), Lilik B Prasetyo 1) , Shigeru Ono3), Yoshio Away4), Masanobu Shimada5) and  Kiyono Yoshiyuki6)

Affiliation: 1) Faculty of Forestry IPB, Campus IPB Darmaga, Bogor, Indonesia. E-mail: ins-jaya@cbn.net.id 2) Graduate School of Bogor Agrucultural University; 3) Japan International Cooperation Agency of Jakarta office; 4) Gifu University, Japan 5) JAXA , Japan; 6) Forestry and Forest Product Research Institute of Japan (FFPRI)

Will be prensented by Prof. Nengah in ICSS-2012, Bali  12 January2012


This  study examined the relationship between backscatter magnitude of ALOS PALSAR images having several spatial resolutions (6.25 m, 12.5 m and 50 m) and variation of vegetation and forest variables.  The study was performed in secondary natural forest, Eucalyptus plantation forest, rubber plantation and oil palm estate crop in North Sumatera Province.   The study was focused to  examine several stand and/or plantation variables  that affect the variation of backscatter provided. The stand variables examined includes crown diameter, crown height,  crown density, crown closure, stand density, tree diameter,basal area tree height, leaf area index, tree biomass for every size of tree (sapling, pole and tree levels).   The main purpose of this study was to identify the most significant factors that affect the magnitude of backscatter within each type of forest cover and to develop biomass estimator model using backscatter derived from ALOS PALSAR.  The study found that the variation of forest or vegetation variables may affect the variation of backscatter.  For secondary natural forest, the study found that the stand variables giving significant influences on backscatter variations is the biomass volume and basal areas either for resolution 50 m x 50 m or 6.25 m x 6.25 m.  However, for the Eucalyptus grandis plantation forest, the magnitude of bacskcatter is strongly influenced by stand height for resolution 50 m x 50 m; and stand density and crown closure for resolution 6.25m x 6.25m. For  rubber plantation, the value of backscatter is strongly influenced by basal area tree diameter size  (similar to natural  forest) for resolution 50 m x 50 m; and by biomass, crown area, dbh and tree spacing ratio for 12.5 m x 12.5 m. .  The value of backscatter  in oil palm is  influenced by crown diameter for resolution 50 m x 50 m and by tree height for 12.5 x 12.5 m.      The study also found that bacscatter of ALOS PALSAR can be used to estimate the biomass content of rubber and oil palm.