Judul: Population Density of Gibbon (Hylobates funereus) at Long Ayap Forest, Berau Regency, East Kalimantan Province
Abstrak: Owa (Hylobates funereus) merupakan salah satu primata endemik Pulau Kalimantan. H. funereus dinyatakan sebagai spesies genting (endangered) oleh IUCN tahun 2020. Salah satu ancaman yang dihadapi owa adalah kehilangan habitat akibat deforestasi hutan menjadi kebun kelapa sawit. Penelitian ini bertujuan untuk menghitung kepadatan populasi dan mengestimasi populasi owa (H. funereus) di hutan Long Ayap, kabupaten Berau, provinsi Kalimantan Timur. Metode yang digunakan adalah metode line-transect sampling. Pengamatan dilakukan pada tiga blok hutan di kebun kelapa sawit PT Mulia Inti Perkasa (MIP) dari bulan September sampai Desember 2022. Pengamatan dilakukan pada tiga transek dengan total ulangan sebanyak 27 ulangan. Total kepadatan populasi owa adalah 11,96 individu/km2. Estimasi populasi owa di hutan Long Ayap, kabupaten Berau, provinsi Kalimantan Timur adalah 17,82 individu, Gibbon (Hylobates funereus) is one of the endemic primates of Borneo Island. H. funereus is declared as endangered species by IUCN 2020. One of the threat is the loss of habitat caused by forest deforestation for palm oil field. The aim of the research is to assess population density and to estimate population of gibbon at Long Ayap Forest, Berau Regency, East Kalimantan Province. Observation is conducted using line transect sampling method. Observation is carried out at three forest blocks at palm oil field of PT Mulia Inti Perkasa (MIP) from September to December 2022 with total of 27 repeatation. Total gibbon population density is 11,96 individuals/km2. Estimation of gibbon population at Long Ayap Forest, Berau Regency, East Kalimantan Province is 17,82 individuals.
Keyword: deforestasi, Hyobates funereus, Long Ayap, line-transect, populasi

Judul: Dukungan Masyarakat Lokal dan Habitat untuk Konservasi Owa jawa (Hylobates moloch, Audebert, 1798) di Resort Bodogol Taman Nasional Gunung Gede Pangrango
Abstrak: The Javan gibbon (Hylobates moloch Audebert, 1798)), found in Western Java, is one of the rarest and most endangered hylobatids. The role of local community on natural resource management and wildlife conservation in national parks, particularly in Mount Gede Pangrango (Resort Bodogol), is of vital importance. The aims of the study were to analyze the community activities conducted for the population of H. moloch, predict population growth for H. moloch and identify the use of habitat by H. moloch. The study was analyzed descriptively using data collected by questionnaires as well as field observation. Purposive Sampling technique was used to collect data from 100 respondents. The results showed that only 25% of them were active participants regarding conservation of H. moloch. The population of H. moloch consisted of 13 groups with 39 individuals which are 13 adult males and 14 adult females, 5 sub adult males, 4 sub adult females and 3 infantiles. The average population density was estimated at 27 animals/km2, the standard error of 2,61, with coefficient of variance 6,69%.The group studied was composed of one adult male, two adult female, two subs adult and one infant. The results from Focal Animal sampling method within five minutes interval showed that the time proportion of group activities consisted of feeding (33,06%), moving (10,87%), resting (36,26%), calling (4,32%) and social activities (15,45%). The value of sex ratio is 1:1,25 for sub adult, while the value of adult sex ratio was 1:0,92. Both of the sex ratio closes to 1:1. The rate of natality is 0,21, while the mortality rate cannot be calculated due to the lack of direct observation and time constraint. It is found that the diversity of plant species in habitat, consisted of 77 species from 27 families. Keywords: Javan gibbon, habitat, conservation, Bodogol
Keyword: 

Judul: Pembuatan dan Karakterisasi Prototipe Sel Surya Nanokristal n-TiO2/Dye/p-CuSCN
Abstrak: Dengan metode casting dan perlakuan annealing, dapat dibuat lapisan nanokristal semikonduktor TiO, pada substrat Transparant Conductive Oxide (TCO). Penambahan dye Methylviolet Thiocianate (MVSCN) dan lapisan CuSCN pada TiO, tersebut menghasilkan sel surya n-TiO,ldye/p-CuSCN yang dapat menyerap foton dan mengubahnya menjadi energi listrik.
Keyword: