Keni Sultan
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POPULASI DAN DISTRIBUSI UNGKO (HYLOBATES AGILIS) DI TAMAN NASIONAL BATANG GADIS, SUMATERA UTARA Sultan, Keni; Mansjoer, Sri Supraptini; Bismark, M.
Jurnal Primatologi Indonesia Vol. 6 No. 1 (2009)
Publisher : Pusat Studi Satwa Primata LPPM-IPB

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Abstract

The agile gibbons (Hylobates agilis) was considered as endangered species. The information on population status of the agile gibbons are limited and fluctuative. The overall aim of this project was to generate critical baseline data on the status of agile gibbon and its distribution at Batang Gadis National Park, North Sumatera. The survey had been conducted at three different locations during August 2006 up to January 2007. Locations of the research were based on types of forests: undisturbed (primary forest) and disturbed forest (logged-over forest and post-cultivated forest). Population density of agile gibbons were conducted by fixed-point count and line transect method. The average population density for agile gibbons at post-cultivated forest was 15.5 individuals/km2, logged-over forest was 13.2 individu/km2 and primary forest was 9.9 individu/km2. While, group density for agile gibbon at post-cultivated forest was estimated at 4.7 group/km2, logged-over forest was 4.0 group/km2 dan lower at primary forest was 3.3 group/km2. There were 3,292 groups and 10,620 individuals in Batang Gadis National Park. On location research Aek Nangali Village, agile gibbons were found at 600-955 m asl but based on preliminary research on July-August 2005, agile gibbon was found at 300-1.200 m asl from north to south of  Batang Gadis National Park.    Keywords: Hylobates agilis, Batang Gadis National Park, population density dan group density
Spectral analysis using Haar wavelet (original signal, denoised signal, residual signal) and source level (SL) for whistle sound of dolphin (Tursiops aduncus) in captivity Lubis, Muhammad Z.; Wulandari, Pratiwi Dwi; Pujiyati, Sri; Hestirianoto, Totok; Sultan, Keni; Mahdi, Dwi P. I.; Mujahid, Muhammad
Aceh Journal of Animal Science Vol 1, No 1: July 2016
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1201.273 KB) | DOI: 10.13170/ajas.1.1.4121

Abstract

This study discussed about Haar wavelet with a view original signal, denoised signal, and residual signal with using fourth whistle sounds of dolphin (Tursiops aduncus). The study was conducted in Safari Park, Cisarua, Bogor Indonesia with 2 dolphins. The results showed differences in results Haar wavelet, this study proves that the Haar wavelet is suitable for the analysis of dolphin sounds, and its have frequency ranged 8-22 kHz. The highest value of the noised signal was smaller than residual signal. The highest of residual signal contained in the second whistle, while the lowest was whistle 1, it showed that the larger the signal denoised result residual signal generated using Haar wavelet. The frequency of source level value ranged 8500 Hz to 11800 Hz, with the highest SL value was 43.9 dB (brown cyrcle). The lowest of the frequency of Source Level (SL) value ranged between 15700 Hz to 17990 Hz, with the lowest SL value was 38.5 dB (brown cyrcle). Whistle 1, 2, 3, and 4 have a different value SL and every SL values obtained in 1,2,3, and 4 have differences noise, it shows the same target but SL value and the sound patterns remain distinct by looking at time duration of whistle sound. Beam pattern from an omni directional sound source (DI= 0 dB, cyan trace) and a directional source following the piston model (DI= 18 dB, black  trace) and beam pattern with 4 types signal have ranged value 70 º-180°, with highest intensity value was 60º.
PRODUKSI SUARA DAN TINGKAH LAKU LUMBA-LUMBA JANTAN HIDUNG BOTOL (Tursiops aduncus ) DENGAN METODE BIOAKUSTIK DI TAMAN SAFARI, CISARUA BOGOR, INDONESIA Lubis, Muhammad Zainuddin; Pujiyanti, Sri; Hestrianoto, Totok; Wulandari, Pratiwi Dwi; Sultan, Keni
JURNAL ENGGANO Vol 1, No 2 (2016): Jurnal Enggano
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (771.156 KB) | DOI: 10.31186/jenggano.1.2.20-28

Abstract

Produksi suara merupakan bagian dari metode bioakustik, yaitu menggabungkan biologi dan akustik yang biasanya merujuk pada penelitian mengenai produksi suara,dispersi melalui media elastis, dan penerimaan pada hewan, termasuk manusia. Penelitianini mengamati tingkah laku lumba-lumba jantan dengan melakukan pendekatan ilmubioakustik yang melihat karakteristik dari lumba-lumba tersebut. Lumba-lumba jantan(Tursiops aduncus) yang dipelihara di Taman Safari Indonesia, Cisarua Bogor memiliki nilaiintensitas terendah sebesar 28,03 dB dan tertinggi adalah sebesar 32,01 dB. Dengan ratarataparameter yang terukur yaitu salinitas sebesar 30 ‰ dan suhu 23 °C dengankedalaman kolam 4,5 meter. Range frekuensi suara klik dengan nilai intensitas tertinggiyaitu sebesar 32 dB dengan suara klik sesudah makan pada hari ke 2 yang terdapat padarange frekuensi yaitu 14 - 16 kHz. Range frekuensi suara klik lumba-lumba jantan hidungbotol (Tursiops aduncus) di Taman Safari, Cisarua Bogor, Indonesia yaitu pada frekuensi14,2- 15 kHz.