Tatang Mitra Setia

Nasional University | UNAS · Faculty of Biology

Passive acoustic monitoring is a promising tool for monitoring at-risk populations of vocal species, yet, extracting relevant information from large acoustic datasets can be time-consuming, creating a bottleneck at the point of analysis. To address this, an open-source framework for deep learning in bioacoustics to automatically detect Bornean whit...

Vocal complexity is central to many evolutionary hypotheses about animal communication. Yet, quantifying and comparing complexity remains a challenge, particularly when vocal types are highly graded. Male Bornean orangutans ( Pongo pygmaeus wurmbii ) produce complex and variable “long call” vocalizations comprising multiple sound types that vary wi...

Passive acoustic monitoring is a promising tool for monitoring at-risk populations of vocal species, yet extracting relevant information from large acoustic datasets can be time- consuming, creating a bottleneck at the point of analysis. We adapted an open-source framework for deep learning in bioacoustics to automatically detect Bornean white-bear...

Male orangutans (Pongo spp.) exhibit bimaturism, an alternative reproductive tactic, with flanged and unflanged males displaying two distinct morphological and behavioral phenotypes. Flanged males are larger than unflanged males and display secondary sexual characteristics which unflanged males lack. The evolutionary explanation for alternative rep...

In many group-living species, individuals are required to flexibly modify their communicative behaviour in response to current social challenges. To unravel whether sociality and communication systems co-evolve, research efforts have often targeted the links between social organisation and communicative repertoires. However, it is still unclear whi...

Tropical peatlands are the sites of Earth's largest fire events, with outsized contributions to greenhouse gases, toxic smoke, and haze rich with particulate matter. The human health risks from wildfire smoke are well known, but its effects on wildlife inhabiting these ecosystems are poorly understood. In 2015, peatland fires on Borneo created a th...

Sexually-selected infanticide by males is widespread across primates. Maternal protection is one of many infanticide avoidance strategies employed by female primates. Bornean orangutan (Pongo pygmaeus wurmbii) mothers with younger offspring are less social with males than mothers with older offspring. Additionally, the distance between a mother and...

Bellucia pentamera Naudin (Famili: Melastomataceae), atau dikenal dengan nama lokal jambu perancis, kardia, dan harendong gede merupakan jenis tumbuhan invasif yang ditemukan di Taman Nasional Gunung Palung (TNGP). Jenis ini banyak dijumpai di TNGP selama dua dekade terakhir dan telah meningkatkan kekhawatiran tentang potensi dampak negatif pada ke...

Haemadipsid leeches are ubiquitous inhabitants of tropical and sub‐tropical forests in the Indo‐Pacific region. They are increasingly used as indicator taxa for biomonitoring, yet very little is known about their basic ecology. For example, to date no study has assessed the occurrence and distribution of haemadipsid leeches across naturally occurri...

Soybean is the third most important food commodity in Indonesia, which is a cheap source of protein and rich in different nutritional contents for humans. This study aimed to analyze the four genotypes of the crossing parents using SSR primers and select one SSR polymorphic primer to confirm the F1 generation alleles compared to their parents. The...

Whether nonhuman species can change their communicative repertoire in response to socio-ecological environments has critical implications for communicative innovativeness prior to the emergence of human language, with its unparalleled productivity. Here, we use a comparative sample of wild and zoo-housed orang-utans of two species (Pongo abelii, P....

Vertebrate predation and consumption by wild Bornean orangutans (Pongo pygmaeus spp.) is rare. In contrast to recorded observations of slow loris consumption by Sumatran orangutans (Pongo abelii), no cases of this have been previously published for Bornean orangutans in the wild. In 2017, we observed the capture and consumption of a slow loris (Nyc...

Ikhwani, Saribanon N, Setia TM, Yuniarti E, Jumakir. 2021. Nitrogen-fixation and phosphate-solubilization bacteria isolated from alluvial and latosol soil paddy field. Biodiversitas 22: 4722-4730. This study aims to isolate, select and identify molecular characterization of bacteria from alluvial and latosol soil paddy field. This study has been co...

From early infancy, human face-to-face communication is multimodal, comprising a plethora of interlinked communicative and sensory modalities. Although there is also growing evidence for this in nonhuman primates, previous research rarely disentangled production from perception of signals. Consequently, the functions of integrating articulators (i....

Understanding of animal responses to dynamic resource landscapes is based largely on research on temperate species with small body sizes and fast life histories. We studied a large, tropical mammal with an extremely slow life history, the Western Bornean orangutan (Pongo pygmaeus wurmbii), across a heterogeneous natural landscape encompassing seven...

The creation of novel communicative acts is an essential element of human language. Although some research suggests the presence of this ability in great apes, this claim remains controversial. Here, we use orang-utans (Pongo spp.) to systematically assess the effect of the wild-captive contrast on the repertoire size of communicative acts. We find...

From early infancy, human face-to-face communication is “multimodal”, comprising a plethora of interlinked articulators and sensory modalities. Although there is also growing evidence for this in nonhuman primates, the functions of integrating articulators (i.e. multiplex or multi-articulator acts) and channels (i.e. multimodal or multi-sensory act...

AbstrakJamur merupakan komponen dasar yang sangat penting dalam suatu ekosistem. Taman Nasional Baluran merupakan salah satu ekosistem dengan beberapa tipe habitat yang mendukung pertumbuhan jamur. Kawasan ini memiliki keanekaragaman jamur yang belum banyak dieksplorasi. Tujuan penelitian ini adalah untuk mengetahui komposisi, keanekaragaman jenis...

The communicative function of primates' self-directed behaviours like scratching has gained increasing attention in recent years, but their intentional use is still debated. Here, we addressed this issue by exploring the communicative function of 'loud scratches' in wild Sumatran orangutans. Building on previous studies in chimpanzees, we examined...

The areas surrounding peat swamp forest at Dusun Meliau and Bukit Peninjau, Kapuas Hulu, West Kalimantan host a diverse species of flora and fauna, including macrofungi. However, the information on the macrofungal diversity in this area has not been reported. The goal of this study was to obtain information on the diversity of macrofungi that can b...

The Bukit Rimbang Bukit Baling Wildlife Reserve Area (SMBRBB) Riau is one of the areas that has the characteristics of lowland rainforest types with high biodiversity, so it is possible to find many macro fungi, but there is no data on macrofungi diversity. This research was conducted with the aim of obtaining diversity data and potential data on m...

Borneo is a home for approximately 222 species of mammals and 44 of them are endemic. Like other big islands, Borneo has more number of species than small islands and its surrounding. Based on the theory of island biogeography stated that number of species in an island is determined by the breadth of the island. Bunyu is a small island at the offsh...

Muaragembong is a coastal area located on the north coast of West Java. Muaragembong is an area consisting of beaches, rivers and open-water ponds in generally hot climates, during the day it reaches 29-320C, and at night around 25-270C with rainfall averages 1,360 mm. The Muaragembong coastal area is a transitional area between land and sea so tha...

Abstrak Penelitian bertujuan untuk mengetahui penggunaan pohon tidur monyet ekor panjang (Macaca fascicularis). Penelitian menggunakan metode Pencatatan Perjumpaan Langsung. Hasil penelitian menunjukkan bahwa di Hutan Lindung Angke Kapuk (HLAK) hanya terdapat sekelompok monyet ekor panjang yang berjumlah 26 individu dengan komposisi: 1 jantan alfa...

The mangrove ecosystem is an important habitat for birds; these ecosystems still exist in the coastal area of Jakarta. Variations in habitat conditions and its position is based on its proximity to the beach can influence the composition and diversity of bird species. This research was conducted in order to determine the level of differences in the...

Burung, Jakarta, keanekaragaman' komposisi' mangrove

The mangrove ecosystem is an important habitat for birds; these ecosystems still exist in the coastal area of Jakarta. Variations in habitat conditions and its position is based on its proximity to the beach can influence the composition and diversity of bird species. This research was conducted in order to determine the level of differences in the...

In many solitary mammalian species, females live alone in relatively small home ranges whereas males roam widely and converge around, and compete for matings with fertile females. In primates, orangutans are the only diurnal semi solitary species showing this roving male promiscuity mating system. Here, we develop and test hypotheses about the natu...

Acoustic individual discrimination has been demonstrated for a wide range of animal taxa. However, there has been far less scientific effort to demonstrate the effectiveness of automatic individual identification, which could greatly facilitate research, especially when data are collected via an acoustic localization system (ALS). In this study, we...

Inventarisation of macrofungi in the Nature Reserve Lembah Anai and Batang Palupuh, West Sumatra, has been conducted. The purpose of this study was to determine the macrofungi diversity in both areas, and to know species diversity of macrofungi which have potential as a food and medicinal. The macrofungi specimens were collected through transect li...

Kekayaan sumberdaya hayati Indonesia tercermin dari melimpahnya jenis ikan yang mencapai kurang lebih 2.057 jenis. Salah satu komoditas perikanan laut yang bernilai ekonomis tinggi adalah kuda laut (Hippocampus spp) baik sebagai ikan hias, souvenir maupun sebagai bahan baku obat-obatan. Setiap tahun sejumlah 20 juta ekor kuda laut kering dan ratusa...

For orangutans, the largest predominantly arboreal primates, discontinuous canopy presents a particular challenge. The shortest gaps between trees lie between thin peripheral branches, which offer the least stability to large animals. The affordances of the forest canopy experienced by orangutans of different ages however, must vary substantially a...

The long call is an important vocal communication signal in the widely dispersed, semi-solitary orangutan. Long calls affect individuals' ranging behavior and mediate social relationships and regulate encounters between dispersed individuals in a dense rainforest. The aim of this study was to test the utility of an Acoustic Location System (ALS) fo...

INTRODUCTION: Indonesia is very rich in biological diversity, including macrofungi. Macrofungi or mushrooms are well known for its nutritional and medicinal properties. Unfortunately, existing data about biodiversity of macrofungi in Indonesia, especially which used as ingredients of traditional medicine is very limited. The present works is an att...

Monkey alarm calls have shown that in the primate clade, combinatorial rules in acoustic communication are not exclusive to humans. A recent hypothesis suggests that the number of different call combinations in monkeys increases with increased number of predator species. However, the existence of combinatorial rules in great ape alarm calls remains...

Periodic episodes of food scarcity may highlight the adaptive value of certain anatomical traits, particularly those that facilitate the acquisition and digestion of exigent fallback foods. To better understand the selective pressures that favored the distinctive dental and locomotor morphologies of gibbons and orangutans, we examined the foraging...

Orangutans are a species with a very pronounced sexual dimorphism, in that fully grown males are about twice the size of females, but adult, sexually mature males come in two distinct morphs. Unflanged males lack the secondary sexual characteristics (e.g., cheek flanges, throat sack, long call) of the flanged males, but are sexually active, fertile...

Despite their semi-solitary nature, associations among orangutans are more common than expected by chance for most combinations of age-sex classes. Variation in party size is due to variation in food availability or sexual activity, reflecting the two main types of parties encountered in orangutans. Parties may involve mating or are formed around m...

Sexually mature male orangutans live in home ranges that are 3–5 times that of adult females and show very high overlap. Encounters among flanged males, while rare, are invariably antagonistic and may lead to injury or death. Their dominance relations are not always transitive, however, producing non-linear hierarchies, probably because they usuall...

This book describes one of our closest relatives, the orangutan, and the only extant great ape in Asia. It is increasingly clear that orangutan populations show extensive variation in behavioral ecology, morphology, life history, and genes. Indeed, on the strength of the latest genetic and morphological evidence, it has been proposed that orangutan...

Orangutans are a species with a very pronounced sexual dimorphism, in that fully grown males are about twice the size of females, but adult, sexually mature males come in two distinct morphs. Unflanged males lack the secondary sexual characteristics (e.g., cheek flanges, throat sack, long call) of the flanged males, but are sexually active, fertile...

Flanged male orang-utans emit loud vocalizations called long calls. In this study, we examined the correlates of variation in long-calling rates among flanged male Sumatran orang-utans, as well as the ranging responses of adult females and flanged males to these long calls. Males that gave calls more often were more likely to approach calls by othe...

Like many primates, orangutans face fluctuations in fruit availability. We show that in Ketambe (Sumatra), fruit availability fluctuations have very little influence on orangutan diet. Most importantly, the percentages of fruits including figs, fruits excluding figs, and figs in their diet do not differ significantly between periods of varying frui...

We present life history data on wild Sumatran orangutans gleaned from a 32-year and a 5.5-year study. Estimated age at first reproduction was 15.4 years. At 9.3 years, the average interbirth interval for this population is the longest ever recorded for any great ape population, significantly longer than that of a Bornean orangutan population. We fi...

The Working Group on Life History Characteristics of the Population and Habitat Viability Analysis Workshop relied primarily on unpublished data on orangutans collected at Ketambe, Gunung Leuser National Park, Sumatra and Tanjung Puting National Park, Kalimantan. The orangutan appears to be the ultimate K-selected species, in that survivorship is h...

At the Population and Habitat Viability Analysis (PHVA) Workshop for orangutans, estimates of habitat and population numbers for Sumatran orangutans (Pongo pygmaeus abelii) were derived from field biologists who studied, or are presently studying, orangutans at Ketambe in Gunung Leuser National Park. For Sumatra, the exact boundaries of orangutan d...

Research on wild orangutans has been carried out in the Ketambe research site, Sumatra, Indonesia, since 1972. This paper focuses on the last five years during which 48 individuals were observed in the research area. In 1991, the adult male who had been the resident male for almost 18 years (with only a short interruption) was challenged and defeat...

Summary The aim of this project is to determine the impact of illegal logging on orangutan behaviour, ecology and survival at the Ketambe research site, northern Sumatra, Indonesia. To design sustainable logging systems it is of critical importance to determine the effect that logging has on a forest's inhabitants and whether or not the logging ult...