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All Journal HAYATI Journal of Biosciences Jurnal Primatologi Indonesia Jurnal Sylva Lestari
Septiantina Dyah Riendriasari
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology

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Tingkah Laku Owa Jawa (Hylobates moloch) di Fasilitas Penangkaran Pusat Studi Satwa Primata, Institut Pertanian Bogor Septiantina Dyah Riendriasari; Entang Iskandar; Jansen Manansang; Joko Pamungkas
Jurnal Primatologi Indonesia Vol. 6 No. 1 (2009)
Publisher : Pusat Studi Satwa Primata LPPM-IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (218.275 KB)

Abstract

The Javan Gibbon is a primate species endemic to Java, Indonesia and considered as an endangered species (IUCN 2008). The Primate Research Center of Bogor Agricultural University (PRC-IPB) in cooperation with Taman Safari Indonesia have established an ex situ breeding facility for the Javan Gibbon to support conservation program. The breeding was started in 2003, and up to recently, the pair of Javan Gibbons ( 15 and 7 years old) has had three offspring, and still occupy one common cage. Assessment of the Javan Gibbon’s behavior in captivity especially to the family with five individuals was conducted using focal animal sampling to provide basic behavioral data.  Moving was the greatest frequency (45.70%) of each individual compared to other behaviors, while resting was the greatest duration that occurred to the parents, and playing was the greatest duration (18.02%) to the offspring respectively.    Keywords : behavior, javan gibbon, endangered, captive breeding
Ecological Impact on Stingless Bees: Evaluating Pollen Load and Body Size Post-Introduction Suhri, Andi Gita Maulidyah Indraswari; Kahono, Sih; Riendriasari, Septiantina Dyah; Syahribulan; Salatnaya, Hearty; Rahmah, Mufti Hatur
HAYATI Journal of Biosciences Vol. 32 No. 2 (2025): March 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.2.278-286

Abstract

Changes in foraging behavior of stingless bees are caused by their introduction to new environments with varying biotic and abiotic factors. These bees struggle to adapt due to the shift from their original range. Biotic factors, particularly food source abundance, are crucial for their survival. Limited resources and reduced competition can decrease hive pollen, affecting larval nutrition and adult morphological growth. This study examines the physical effects of introducing stingless bees from Sulawesi to Jawa, Indonesia, using PCA to analyze 35 morphological traits and a haemocytometer to calculate pollen load. Morphometry was performed on ten separate colonies and ten different individual worker bees. Research findings indicate that the most significant size changes were observed in the forewing and hindwing lengths of worker bees at the introduction site. The smaller body size in the new environment indicates less available food in the nest. The lower pollen collection in the new environment compared to their natural habitat confirms this. The decline in pollen load is attributed to biotic factors like competition and food availability. When stingless bees become non-native, they face competition with existing species, including natives. Abiotic factors do not significantly influence the reduction in worker bees' foraging activity in the new environment. Changes in environmental factors significantly influenced the morphometric measurements of worker bees, following their introduction to lowland areas.
Early Ecological Responses to Vegetation Enrichment for Pollinator Habitat Recovery using Tetragonula biroi in Community Agroforestry Systems Masniawati, Andi; Suhri, Andi Gita Maulidyah Indraswari; Yusran; Hasdiansyah, Andi; Ruli, Fitha Febrilia; Riendriasari, Septiantina Dyah; Litaay, Magdalena
Jurnal Sylva Lestari Vol. 14 No. 1 (2026): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v14i1.1343

Abstract

Pollination decline has become a major ecological concern in tropical agroforestry systems, where habitat simplification reduces floral diversity and threatens pollinator stability. This study aimed to evaluate early ecological responses to vegetation enrichment designed to restore pollination function in a community-managed agroforestry landscape in South Sulawesi, Indonesia. A paired-plot experiment was established to compare two adjacent plots (each 0.25 ha), an enriched plot and a control plot, in which floral diversity, foraging activity, colony productivity, and microclimatic parameters were monitored from September to November 2025. Indices of diversity and comparative statistical tests were used to analyse ecological variables and assess treatment effects. Shannon-Wiener floral diversity indices (H') increased from 1.45 to 1.66 after vegetation enrichment, resulting in greater phenological overlap in relation to the control plots as well. These changes correspond to a substantially increased rate of stingless bee (Tetragonula biroi) visits and a higher return frequency in enriched plots (p < 0.05). An increase in foraging activity was observed, with a significantly greater extension of the brood area and a rise in honey production, reflecting improved colony performance. Also, microclimatic measurements indicated lower temporal variance in ambient temperature and light intensity under enriched vegetation, suggesting a dampening effect on more stable foraging conditions. In general, these results imply that small-scale vegetation can induce an early return to functioning through a trade-off effect on resource diversity, colony strength, and environmental stability in the context of community agroforestry systems and do not contradict community-based landscape management. Keywords: agroforestry, meliponiculture, pollination, Tetragonula biroi, tropical restoration, vegetation enrichment
Co-Authors Andi Gita Maulidyah Indraswari Suhri Entang Iskandar Hasdiansyah, Andi Jansen Manansang Magdalena Litaay Masni Masni Pamungkas, Joko Rahmah, Mufti Hatur Ruli, Fitha Febrilia Salatnaya, Hearty Sih Kahono Syahribulan Yusran