Archive for June, 2012

Bachelor : Surface Temperature Distribution for Consideration of Green Space Development in Sidoarjo Regency

by :  REZA PRADIPTA

Under supervision : Lilik B.Prasetyo & Badriyah Rushayati

Sidoarjo Regency had an advantage economic development due to its location bordered  to Surabaya City. The increased space requirement for trade & industrial area forced  to green space conversion., resulted in temperature increase.  Research aims is to evaluate  and build the relationship models between the green space distance with surface temperature and provide an alternative green space development in Sidoarjo Regency.

To achieve this goal  remote sensing data of  Landsat 7 ETM were used. Satellite image processing is done to determine the land cover classification and surface temperature estimation in Sidoarjo Regency. Sample points  for  regression analysis were determined manually, on the buil-up areas. Distance the points to each land cover types (grass and bush, rice field, farm, close vegetation and sparse vegetation ) were made based on Eucledian Distance.

The regression result was presented in the formula below.

y = 28,7 + 0,00348 x1 + 0,593 Ln x2 + 0,565 Ln x3

 

where x1 is a distance of observation point to grass and bush, x2 is a distance of observation point to farm and x3 is a distance of observation point to rare vegetation.

Based the above equation,  close vegetation does not affect significantly to surface temperature because its area was very small.  Alternative green space development  should be done on location with a high surface temperature, namely : area is around PT Tjiwi Kimia, Sidoarjo and Waru district, Krian-Tarik by pass roads, and roads around the area of  Porong mudflow.

 

 

Green space development at Sidoarjo Regency could  be also promoted by planting trees, creating a vertical garden on home yard, planting and enriching the river border green space, planting and enriching green space of roads and creating a vertical garden at the office or industrial site.

Corresponding Author : Reza (wajah_pribumi04@yahoo.com)

Keywords: Remote sensing, green space, surface temperature.

Dissertation Seminar : Habitat Suitability Modeling of Javan Rhino (Rhinoceros sondaicus Desmarest, 1822) in Ujung Kulon National Park)

U. Mamat Rahmat, Yanto Santosa, Lilik B. Prasetyo dan Agus P. Kartono

ABSTRACT

Javan rhino (Rhinoceros sondaicus Desmarest, 1822) is the rarest species among five species of rhino in the world. Distribution of javan rhino is limited in Ujung Kulon National Park, IndonesiaBecause of small population size and its limited distribution so is it listed in Redlist by the IUCN as critically endangered species. The main objectives of this research are: 1) to identify dominant habitat components that determine the presence of Javan Rhinoceros in UKNP, 2) to analyze habitat suitability of Javan rhino (Rhinoceros sondaicus Desmarest 1822) in UKNP using Geographical Information System. The results found that there were eight compnents identified to be the crucial for javan rhino habitat and appropriate for spatial modeling of habitat suitability, i.e. distance from the road patrol, distance from the wallow, distance from the river, distance from the beach, distance from the rumpang (open area), slope, elevation and leaf area index. The most dominant factor influencing the frequency of the javan rhino are slope, distance from the rumpang, distance from the wallow and distance from the beach (P<0,005; R2 81,14%). Spatial model of habitat suitability result 11% patches of low suitability, 23,7% patches of moderate suitability and 65,2% patches of high suitability.  The validity of the model was 88,57%.

Keywords: javan rhino, habitat suitability, preference,  spatial modeling

Seminar paper can be downloaded here [doc]

Corresponding author : U.Mamat Rahmat Rahmat <umat_rahmat@yahoo.com>;

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

 ABSTRACT

 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

Abstract

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>