Vincent Nijman
Dados Biográficos
| ID | 667127 |
|---|---|
| NOME | Vincent Nijman |
| PRENOMES | Vincent |
| SOBRENOME | Nijman |
| ASSINATURA | NIJMAN V |
| AFILIAÇÕES | Oxford Brookes University |
| ORCID | 0000-0002-5600-4276 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 44 |
| TOTAL DE CITAÇÕES | 30 |
| TOTAL COMO AUTOR | 43 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2006 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 3 |
Heterospecific social behavior in primates
Primate interspecific interactions with both other primates and non-primate species range from predator–prey dynamics to affiliative behaviors such as grooming, play, and carrying. While many primates participate in interspecific associations or commensal relationships, to our knowledge interspecific social interactions have never been systematically synthesized. Here, we present the first comprehensive review of such interactions, compiling 427 …
Using occupancy modeling to provide insights into suitable habitat characteristics for the already restricted and critically endangered Olalla's titi monkey (Plecturocebus olallae)
Knowledge about changes in wildlife populations over time is essential for making informed decisions regarding their conservation. We evaluated the influence of distinct habitat factors on the occupancy of Olalla's titi monkey ( Plecturocebus olallae ), a Critically Endangered primate endemic to Bolivia. We assessed the presence of titi monkey groups using the playback technique, employing point counts in 582 quadrants of approximately 6.25 hecta…
Assessment of Mitigation of Human–Elephant Conflict in the Highlands of Northwest Namibia
In the remote, semi-desert landscape of the highlands, west of Etosha National Park, competition between humans and elephants for natural resources is likely to increase because of climate change. The aim of this study was to assess priorities and measures to reduce human–elephant conflict in the highlands, and identify lessons learnt. The approach included interviews with community game guards, site visits to water points and analysis of data re…
Limited support for Global North-Global South inequality in regulating international trade in scalloped hammerhead sharks
The scalloped hammerhead shark ( Sphyrna lewini ) is a Critically Endangered species with a circumglobal distribution that has declined because of unsustainable trade in its fins. Since 2014 its international trade is regulated through the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). Recently, a Global North-South inequality in the species’ protection was postulated, with a purported significant South t…
Quantifying illegal rosewood trade, seizures and forestry law enforcement in Indonesia
Patterns of illicit trafficking networks can be explained by economic, geographic and environmental factors, and has clear implications for forest management. Rosewood is one of the most valuable taxa in the illegal wildlife trade. We focus on its illegal trade in Indonesia. Here, rosewood is not a protected species, but logging is prohibited in protected areas, logging and transportation of rosewood requires permits, and its international trade …
Illegal Wildlife Trade in a Tourism and Biodiversity Hotspot
There are clear connections between tourism, development, and sustainable use—particularly in biodiversity hotspots, where tourists may unknowingly purchase souvenirs made from protected wildlife. This issue is explicitly recognized in the Sustainable Development Goals, including SDG15, Life on Land, and SDG16, Peace, Justice, and Strong Institutions. On the island of Bali, a premier tourist destination with a strong local Hindu culture, we asses…
Examining predictive meteorological variables in the singing behavior of northern white‐cheeked gibbons ( Nomascus leucogenys ) in northern Lao PDR
Considering the conservation attention needed to keep viable the few remaining wild populations of the Critically Endangered northern white‐cheeked gibbon ( Nomascus leucogenys ), there has been a serious paucity of research undertaken for the species. To improve the effectiveness of surveys of this and other gibbon species, and ultimately their conservation, it is important to better understand the variables that affect their singing behavior—th…
Indonesia's sustainable development goals in relation to curbing and monitoring the illegal wildlife trade
Indonesia has committed to implement the sustainable development goals (SDG) by 2030 including the ending trafficking of protected species and addressing the illegal wildlife demand and supply. As such, there is a need for long‐term data on wild animal trade and its contribution to the wider economy. We initiated a long‐term monitoring programme of live civet trade in wildlife markets (120 surveys, 2010–2023). Civets are traded to be kept as exot…
Perspectives on Conservation Impacts of the Global Primate Trade
The global trade in nonhuman primates represents a substantial threat to ecosystem health, human health, and primate conservation worldwide. Most of the primate trade involves trade for pet-keeping, consumption, or biomedical experimentation. We present an overview of international primate trade through five case studies; each describes a different facet of this trade. We draw on published scientific literature, media outlets, and open access dat…
Tourists, selfies and coastal monitoring during Covid-19
Citizen science in coastal ecosystems often involve (eco-)tourists that actively monitor reefs, species and pollution. Data collected by tourists, passively, was used to gain insight into landings of the largest fish, the whale shark (Rhincodon typus), in Pangandaran Bay, Indonesia. Monitoring of illegal fishing was halted due to COVID-19 travel restrictions and lockdowns. With two million, mainly Indonesian, tourists visiting Pangandaran Bay in …
Lessons on the Community Conservancy Model for Wildlife Protection in Namibia
The growing human population in Africa is putting increasing pressure on habitats and wildlife outside of protected areas. The wildlife conservancy model in Namibia empowers rural communities to decide on the use of wildlife. Namibia started to implement the conservancy model in the 1990s and provides relevant experience from which other countries can learn. We reviewed the conservancy model in northwest Namibia to identify lessons for other coun…
Medicine, black magic and supernatural beings
Trade of wildlife for use in traditional medicines, rituals, magical spells and cultural practices occurs globally and has been studied mostly in Africa and Asia. The grey slender loris Loris lydekkerianus is used for both medicinal and ritual purposes, but little information is available on how the user is meant to extract their medicinal properties, or the potential impact these practices have on the species' populations. From 2014–2021, we use…
A decade of proboscis monkey ( Nasalis larvatus ) population monitoring in Balikpapan Bay
Systematic and well‐structured monitoring is essential for taxa with high extinction risk such as primates. Endangered proboscis monkeys Nasalis larvatus are endemic to Borneo, where they are found scattered across lowland habitats of the island, which are under strong anthropogenic pressure. A large population of proboscis monkeys in Balikpapan Bay, Indonesian Borneo, was predicted to decline due to the ongoing habitat loss and degradation, nota…
Chinese eel products in EU markets imply the effectiveness of trade regulations but expose fraudulent labelling
Keep your distance
Mountain gorilla Gorilla beringei beringei trekking is a substantial source of revenue for the conservation of this threatened primate and its habitat. Trekking, however, may pose a threat of human‐to‐gorilla disease transmission that could have disastrous effects on wild gorillas. We used 858 photographs posted on Instagram in 2013–2019 to analyse the proximity of tourists visiting mountain gorillas in the wild. We classified photographs of the …
Inaccuracies in the reporting of volume and monetary value of large-scale rosewood seizures
Influences of Forest Structure on the Density and Habitat Preference of Two Sympatric Gibbons (Symphalangus syndactylus and Hylobates lar)
Population Dynamics of Nocturnal Lemurs in Littoral Forest Fragments
Targeted Hunting of Ebony Langurs in Early to Mid-Holocene Southern Java
Social and Biological Correlates of Wild Meat Consumption and Trade by Rural Communities in the Jutaí River Basin, Central Amazonia
Wild animals are an important source of food and income throughout the Amazon basin, particularly for forest-dependent communities living in the more remote regions. Through interviews in 51 households within 16 communities in the Jutaí River Extractive Reserve, Amazonas, Brazil, we determined animal taxa consumed and frequency of wild meat consumption, as well as patterns of wild meat trade. We then investigated the influence of social and biolo…
Adapting a Traditional Hunting Technique to Improve Capture Rates for the Endangered Yellow-Footed Tortoise ( Chelonoidis denticulatus ) during Ecological Surveys in Amazonia
The lack of cost-effective methods to detect game species in tropical forests hinders reliable assessments of their population status and the planning of effective actions for their sustainable use. Tortoises are among the most hunted species in Amazonia, but present low detectability in the wild when using current scientific methods. Traditional hunters in the region use specialized methods to capture tortoises, and such knowledge could provide …
Widespread Use of Traditional Techniques by Local People for Hunting the Yellow-Footed Tortoise ( Chelonoidis denticulatus ) Across the Amazon
Understanding the repertoire of hunting techniques used by traditional peoples in tropical forests is crucial for recognizing the role of traditional knowledge in hunting activities, as well as assessing the impact of harvests on game species. We describe the hunting techniques used across Amazonia by Indigenous and non-Indigenous peoples for hunting yellow-footed tortoises ( Chelonoidis denticulatus), one of the most consumed species in the biom…
Souvenirs, Shells, and the Illegal Wildlife Trade
Shells are often seen as portable souvenirs, and both domestic and international tourists bring shells home. While part of this activity concerns individual tourists collecting a small number of shells on the beach, another part concerns large-scale commercial trade. Each year the Indonesian beach resort of Pangandaran is visited by several million tourists, most from within Indonesia. Here, I focus on the commercial trade in large-sized shells f…
Phylogeography, Population Genetics, and Conservation of Javan Gibbons (Hylobates moloch)
Online media seizure reports
Sleep patterns, daytime predation, and the evolution of diurnal sleep site selection in lorisiforms
OBJECTIVES: Synthesize information on sleep patterns, sleep site use, and daytime predation at sleep sites in lorisiforms of Asia and Africa (10 genera, 36 species), and infer patterns of evolution of sleep site selection. MATERIALS AND METHODS: We conducted fieldwork in 12 African and six Asian countries, collecting data on sleep sites, timing of sleep and predation during daytime. We obtained additional information from literature and through c…
Coexistence between Javan Slow Lorises (Nycticebus javanicus) and Humans in a Dynamic Agroforestry Landscape in West Java, Indonesia
Targeted Hunting of Ebony Langurs in Early to Mid-Holocene Southern Java
A giant among dwarfs
OBJECTIVES: Based on vocalization recordings of an unknown galago species, our main objectives were to compare morphology and call structure with known closely-related taxa and describe a new species of galago. MATERIALS AND METHODS: We conducted field surveys in three forest habitats along the escarpment region in western Angola (Kumbira Forest, Bimbe Area, and Northern Scarp Forest), and examined galago specimens from museums worldwide. We digi…
Indonesia's sustainable development goals in relation to curbing and monitoring the illegal wildlife trade
Indonesia has committed to implement the sustainable development goals (SDG) by 2030 including the ending trafficking of protected species and addressing the illegal wildlife demand and supply. As such, there is a need for long‐term data on wild animal trade and its contribution to the wider economy. We initiated a long‐term monitoring programme of live civet trade in wildlife markets (120 surveys, 2010–2023). Civets are traded to be kept as exot…
Influences of Forest Structure on the Density and Habitat Preference of Two Sympatric Gibbons (Symphalangus syndactylus and Hylobates lar)
Assessing the Illegal Bear Trade in Myanmar Through Conversations With Poachers
Myanmar is home to Asiatic black bears and sun bears. We gained insight into illegal hunting and trade of these species in and out of Myanmar through conversations with 40 self-declared bear poachers. All respondents were males who typically killed or caught one to three bears a year, mostly by setting snares. There was a preference for Asiatic black bear. Perceptions were that bears were less abundant now than 5 years ago, but it was not more ar…
Population Dynamics of Nocturnal Lemurs in Littoral Forest Fragments
Online media seizure reports
Conservation Assessments of Arboreal Mammals in Difficult Terrain
Purple-faced Langurs in Human-Modified Environments Feeding on Cultivated Fruits
Checkerboard Patterns, Interspecific Competition, and Extinction
Tarsiers (Tarsius) and slow lorises (Nycticebus) are the only extant nocturnal primates occurring in Southeast Asia. Harcourt (1999) hypothesized that in insular Southeast Asia, slow lorises and tarsiers showed a checkerboard distribution on 12 small (<12,000 km(2)) islands, i.e., only one or the other occurs, and attributed this to extreme levels of competition between these 2 largely faunivorous primates. Further, he predicted slow lorises were…
Calling in wild silvery gibbons (Hylobates moloch) in Java (Indonesia)
Hardly any behavioral data are available for the silvery gibbon (Hylobates moloch), an endangered primate that is endemic to the island of Java, Indonesia. We studied the singing behavior of the easternmost population of this species in the Dieng mountains, central Java, in 1998-1999. We aimed to document the timing of singing, quantify the amount of singing by the respective sexes, and explore the role of bioacoustics in density estimation. A to…
Exploring cultural drivers for wildlife trade via an ethnoprimatological approach
Illegal and unsustainable trade in wildlife is a major conservation challenge. For Asian primates, economic and cultural traditions, and increased forest access mean that trade may have become detrimental for certain species. Slow and slender lorises ( Nycticebus and Loris ) are primates particularly prevalent in trade, determined until now by focused counts of lorises in regional markets. Here, we use international trade statistics and a partici…
Vegetation correlates of gibbon density in the peat‐swamp forest of the Sabangau catchment, Central Kalimantan, Indonesia
Understanding the complex relationship between primates and their habitats is essential for effective conservation plans. Peat‐swamp forest has recently been recognized as an important habitat for the Southern Bornean gibbon ( Hylobates albibarbis ), but information is scarce on the factors that link gibbon density to characteristics of this unique ecosystem. Our aims in this study were firstly to estimate gibbon density in different forest subty…
Checkerboard Patterns, Interspecific Competition, and Extinction
Tarsiers (Tarsius) and slow lorises (Nycticebus) are the only extant nocturnal primates occurring in Southeast Asia. Harcourt (1999) hypothesized that in insular Southeast Asia, slow lorises and tarsiers showed a checkerboard distribution on 12 small (<12,000 km(2)) islands, i.e., only one or the other occurs, and attributed this to extreme levels of competition between these 2 largely faunivorous primates. Further, he predicted slow lorises were…
Spizaetus hawk-eagles as predators of arboreal colobines
Purple-faced Langurs in Human-Modified Environments Feeding on Cultivated Fruits
Habitat characterization of western hoolock gibbons Hoolock hoolock by examining home range microhabitat use
Conservation Assessments of Arboreal Mammals in Difficult Terrain
AAPA Presentation Schedule
The history of infectious disease in humans (and to a lesser extent other primates) has been studied from different perspectives including those of bioarchaeology, medical history, and evolutionary genetics. Technical advances in nucleotide sequencing as well as in the ability to obtain genetic material from difficult sources (such as feces and ancient materials) have enhanced our ability to examine both ancient pathogens and pathogens that are d…
Provide context when reporting on the use of protected and endangered wildlife in ethnopharmacological surveys
Impending extinction crisis of the world’s primates
Impending extinction of the world’s primates due to human activities; immediate global attention is needed to reverse the trend.
Orangutan trade, confiscations, and lack of prosecutions in Indonesia
Prosecuting and sentencing law breakers punishes the offender and acts as a deterrent for future law breakers. With thousands of Sumatran and Bornean orangutans (Pongo abelii and P. pygmaeus) having entered private and government rescue centers and facilities, I evaluate the role of successful prosecution in orangutan conservation in Indonesia. Orangutans have been protected in Indonesian since 1931 and they are not allowed to be traded or to be …
Changes in the primate trade in indonesian wildlife markets over a 25‐year period
Indonesia has amongst the highest primate species richness, and many species are included on the country's protected species list, partially to prevent over-exploitation. Nevertheless traders continue to sell primates in open wildlife markets especially on the islands of Java and Bali. We surveyed 13 wildlife markets in 2012-2014 and combined our results with previous surveys from 1990-2009 into a 122-survey dataset with 2,424 records of 17 speci…
Ethnozoological assessment of animals used by Mon traditional medicine vendors at Kyaiktiyo, Myanmar
Coexistence between Javan Slow Lorises (Nycticebus javanicus) and Humans in a Dynamic Agroforestry Landscape in West Java, Indonesia
A giant among dwarfs
OBJECTIVES: Based on vocalization recordings of an unknown galago species, our main objectives were to compare morphology and call structure with known closely-related taxa and describe a new species of galago. MATERIALS AND METHODS: We conducted field surveys in three forest habitats along the escarpment region in western Angola (Kumbira Forest, Bimbe Area, and Northern Scarp Forest), and examined galago specimens from museums worldwide. We digi…
Assessing the Illegal Bear Trade in Myanmar Through Conversations With Poachers
Myanmar is home to Asiatic black bears and sun bears. We gained insight into illegal hunting and trade of these species in and out of Myanmar through conversations with 40 self-declared bear poachers. All respondents were males who typically killed or caught one to three bears a year, mostly by setting snares. There was a preference for Asiatic black bear. Perceptions were that bears were less abundant now than 5 years ago, but it was not more ar…
Online media seizure reports
Sleep patterns, daytime predation, and the evolution of diurnal sleep site selection in lorisiforms
OBJECTIVES: Synthesize information on sleep patterns, sleep site use, and daytime predation at sleep sites in lorisiforms of Asia and Africa (10 genera, 36 species), and infer patterns of evolution of sleep site selection. MATERIALS AND METHODS: We conducted fieldwork in 12 African and six Asian countries, collecting data on sleep sites, timing of sleep and predation during daytime. We obtained additional information from literature and through c…
Souvenirs, Shells, and the Illegal Wildlife Trade
Shells are often seen as portable souvenirs, and both domestic and international tourists bring shells home. While part of this activity concerns individual tourists collecting a small number of shells on the beach, another part concerns large-scale commercial trade. Each year the Indonesian beach resort of Pangandaran is visited by several million tourists, most from within Indonesia. Here, I focus on the commercial trade in large-sized shells f…
Phylogeography, Population Genetics, and Conservation of Javan Gibbons (Hylobates moloch)
Social and Biological Correlates of Wild Meat Consumption and Trade by Rural Communities in the Jutaí River Basin, Central Amazonia
Wild animals are an important source of food and income throughout the Amazon basin, particularly for forest-dependent communities living in the more remote regions. Through interviews in 51 households within 16 communities in the Jutaí River Extractive Reserve, Amazonas, Brazil, we determined animal taxa consumed and frequency of wild meat consumption, as well as patterns of wild meat trade. We then investigated the influence of social and biolo…
Adapting a Traditional Hunting Technique to Improve Capture Rates for the Endangered Yellow-Footed Tortoise ( Chelonoidis denticulatus ) during Ecological Surveys in Amazonia
The lack of cost-effective methods to detect game species in tropical forests hinders reliable assessments of their population status and the planning of effective actions for their sustainable use. Tortoises are among the most hunted species in Amazonia, but present low detectability in the wild when using current scientific methods. Traditional hunters in the region use specialized methods to capture tortoises, and such knowledge could provide …
Widespread Use of Traditional Techniques by Local People for Hunting the Yellow-Footed Tortoise ( Chelonoidis denticulatus ) Across the Amazon
Understanding the repertoire of hunting techniques used by traditional peoples in tropical forests is crucial for recognizing the role of traditional knowledge in hunting activities, as well as assessing the impact of harvests on game species. We describe the hunting techniques used across Amazonia by Indigenous and non-Indigenous peoples for hunting yellow-footed tortoises ( Chelonoidis denticulatus), one of the most consumed species in the biom…
Chinese eel products in EU markets imply the effectiveness of trade regulations but expose fraudulent labelling
Geography (34 obras) · Biology (33 obras) · Ecology (26 obras) · Primate Behavior and Ecology (24 obras) · Wildlife Ecology and Conservation (20 obras) · Habitat (14 obras) · Population (12 obras) · Wildlife (12 obras) · Animal ecology (11 obras) · Animal Vocal Communication and Behavior (10 obras)