Susan Cheyne

Oxford Brookes University · Faculty of Humanities and Social Sciences

As road infrastructure networks rapidly expand globally, especially in the tropics, previously continuous habitats are being fragmented, resulting in more frequent wildlife–vehicle collisions (WVC). Primates are widespread throughout many sub-/tropical countries, and as their habitats are fragmented, they are increasingly at risk of WVC. We created...

We hope to raise awareness of mental health and well-being among primatologists. With this aim in mind, we organized a workshop on mental health as part of the main program of the Winter meeting of the Primate Society of Great Britain in December 2021. The workshop was very well received. Here, we review the main issues raised in the workshop, and...

This study investigated the social relationships observed within a captive breeding group of western lowland gorillas Gorilla gorilla gorilla at a European Association of Zoos and Aquaria (EAZA) accredited facility: Blackpool Zoo, UK. Gorillas are complex and intelligent primates, and the western lowland sub-species is popular in zoo collections. C...

Hylobatids (gibbons and siamangs) are the smallest of the apes distinguished by their coordinated duets, territorial songs, arm-swinging locomotion, and small family group sizes. Although they are the most speciose of the apes boasting twenty species living in eleven countries, ninety-five percent are critically endangered or endangered according t...

Hylobatids (gibbons and siamangs) are the smallest of the apes distinguished by their coordinated duets, territorial songs, arm-swinging locomotion, and small family group sizes. Although they are the most speciose of the apes boasting twenty species living in eleven countries, ninety-five percent are critically endangered or endangered according t...

Hylobatids (gibbons and siamangs) are the smallest of the apes distinguished by their coordinated duets, territorial songs, arm-swinging locomotion, and small family group sizes. Although they are the most speciose of the apes boasting twenty species living in eleven countries, ninety-five percent are critically endangered or endangered according t...

Indonesia is embarking on an ambitious relocation of its capital city to Kalimantan, Borneo, bringing with it major urban and road infrastructure. Yet, despite being one of the world's most biologically diverse regions, the potential implications of this development for wildlife have yet to be fully assessed. We explored the potential impacts of th...

Contemporary conservation professionals are part of a workforce focused on overcoming complex challenges under great time pressure. The characteristics of conservation work, and in particular the evolving demands placed on the workforce, mean that to remain effective these professionals need to enhance their skills and abilities continually. Curren...

Gibbons (family Hylobatidae) typically form groups that encompass a single breeding pair. Here, we present the first evidence of polygyny (where a single male has more than one female mate) in the Bornean white-bearded gibbon ( Hylobates albibarbis ). In July 2014, an adult female yet to have emigrated from her natal group gave birth to an infant,...

Species occur in sympatric assemblages, bound together by ecological relationships and interspecific interactions. Borneo and Sumatra host some of the richest assemblages of biota worldwide. The region, however, faces the highest global deforestation rates, which seriously threaten its unique biodiversity. We used a large camera trap dataset that r...

Lampiran ini menyajikan hasil estimasi kelimpahan kera pada tingkat lokasi. Istilah 'lokasi' merujuk pada kawasan lindung dan/atau zona penyangganya, konsesi pembalakan atau kelompok konsesi, atau area khusus lain yang dalam dua dekade terakhir menjadi lokasi survei. Lampiran ini juga mencantumkan beberapa lokasi yang disur-vei terakhir kali pada t...

We monitored Hylobatid species offered to be sale online during 2015-2020 in Facebook. The result is surprisingly high number of illegal trade of five species of gibbon in Indonesia

In January 2021, the International Union for the Conservation of Nature's Primate Specialist Group Section for Human Primate Interactions (IUCN PSG SHPI) published best practice guidelines on the use of non-human primate imagery online. This paper explores the contribution of professional primate keepers to the detrimental online sharing of images...

Our understanding of the transmission of anthropozoonotic diseases between humans and nonhuman primates, particularly great apes due to their close genetic relationship with humans, highlights a serious potential threat to the survival of these species. This is particularly the case at tourism sites where risk of disease transmission is increased....

Illegal or unsustainable wildlife trade (IUWT) currently presents one of the most high-profile conservation challenges. There is no "one-size-fits-all" strategy, and a variety of disciplines and actors are needed for any counteractive approach to work effectively. Here, we detail common challenges faced when tackling IUWT, and we describe some avai...

Illegal or unsustainable wildlife trade (IUWT) currently presents one of the most high-profile conservation challenges. There is no "one-size-fits-all" strategy, and a variety of disciplines and actors are needed for any counteractive approach to work effectively. Here, we detail common challenges faced when tackling IUWT, and we describe some avai...

Arboreal camera trapping is a burgeoning method providing a novel and effective technique to answer research questions across a variety of ecosystems, and it has the capacity to improve our understanding of a wide range of taxa. However, while terrestrial camera trapping has received much attention, there is little guidance for dealing with the uni...

Sheikh Jamal Inani National Park (Inani) is a wildlife habitat in Bangladesh located under the Cox’s Bazar South Forest Division, Cox’s Bazar. It constitutes significant habitat for the charismatic and globally ‘Endangered’ Western Hoolock Gibbon Hoolock hoolock in Bangladesh. Here, we show that Inani is a poorly-known gibbon habitat with a populat...

Many countries allow lawsuits to hold responsible parties liable for the environmental harm they cause. Such litigation remains largely untested in most biodiversity hotspots and is rarely used in response to leading drivers of biodiversity loss, including illegal wildlife trade. Yet, liability litigation is a potentially groundbreaking conservatio...

Actions such as illegal wildlife trade, deforestation, mining and pollution are often responsible for huge and diverse harms to the environment—including particular impacts on threatened species. Faced with growing concern about the biodiversity crisis, including reports that at least one million species are at risk of extinction1, there are growin...

This annex presents ape abundance estimates at the site level. The term "site" refers to a protected area and/or its buffer zone, a logging concession or group of concessions, or any discrete area where a survey has taken place in the past two decades. This annex also lists a few sites that were last surveyed in the 1970s and 1980s.

Many countries allow lawsuits to hold responsible parties liable for the environmental harm they cause. Such litigation remains largely untested in most biodiversity hotspots and in response to leading drivers of biodiversity loss, including illegal wildlife trade. Yet, liability litigation is a potentially ground-breaking conservation strategy to...

Parasitic nematodes of Oesophagostomum spp., commonly known, as ’nodular worms’ are emerging as the most widely distributed and prevalent zoonotic nematodes. Oesophagostomum infections are well documented in African non-human primates; however, the taxonomy, distribution and transmission of Oesophagostomum in Asian non-human primates are not adequa...

Forest structure, defined as the three-dimensional vertical and horizontal distribution of canopy vegetation, has a great influence on the distribution patterns and abundance of forest primates. The complexity of this structural canopy produces a diverse range of microhabitats and distinct ecological niches, allowing ecologically similar species to...

The often synanthropic long-tailed macaque (Macaca fascicularis) is listed in Appendix II of CITES and was recently updated to Vulnerable on the IUCN Red List. The update was highly anticipated, as it can have wide-reaching implications for long-tailed macaque conservation and trade. Long-tailed macaques have suffered from intensive capture for bio...

The Sunda Clouded Leopard Neofelis diardi is the apex predator on the island of Borneo, yet little is known of its ecology. We document the length of residency of male Sunda Clouded Leopards in Central Kalimantan, Indonesian Borneo. Over 10 years, camera trap data have been obtained in the Sebangau peat swamp forest in a study area of ~ 105km2. We...

The COVID-19 pandemic has caused global disruption, with the emergence of this and other pandemics having been linked to habitat encroachment and/or wildlife exploitation. High impacts of COVID-19 are apparent in some countries with large tropical peatland areas, some of which are relatively poorly resourced to tackle disease pandemics. Despite thi...

[This corrects the article DOI: 10.1093/biosci/biaa082.].

Despite the large body of literature on ape conservation, much of the data needed for evidence‐based conservation decision‐making is still not readily accessible and standardized, rendering cross‐site comparison difficult. To support knowledge synthesis and to complement the IUCN SSC Ape Populations, Environments and Surveys database, we created th...

Threats to biodiversity are well documented. However, to effectively conserve species and their habitats, we need to know which conservation interventions do (or do not) work. Evidence-based conservation evaluates interventions within a scientific framework. The Conservation Evidence project has summarized thousands of studies testing conservation...

Subsistence hunting is an essential livelihood strategy of Indigenous people in the Amazon. The present study examines the aspects influencing hunting practices by the Indigenous Maraguá people in the central Amazon, Brazil. We used a Generalized Additive Model to test the effects of economic (breeding of domestic animals), demographic (individual...

Abstract Interactions between conservation and the social sciences are frequently characterized by either critique (of conservation by social scientists) or co‐optation (of social scientific methods and insights by conservationists). This article seeks to push beyond these two dominant positions by exploring how conservationists and social scientis...

Large seed dispersers play a key role in maintaining and restoring tree species diversity in tropical forests. These taxa may also represent important food sources for sympatric carnivores. Therefore, their occurrence and population status have implications for the health of the forest and conservation of predators. Here we examined patterns of occ...

Little is known about the spatial ecology of the Bornean clouded leopard Neofelis diardi borneensis in peat-swamp forests, which account for 32% of the island of Borneo. This study uses data from 10 years of camera trapping to provide preliminary estimates of minimum home range size and overlap in a tropical peat swamp forest in Central Kalimantan,...

Tropical forests and peatlands provide important ecological, climate and socio‐economic benefits from the local to the global scale. However, these ecosystems and their associated benefits are threatened by anthropogenic activities, including agricultural conversion, timber harvesting, peatland drainage and associated fire. Here, we identify key ch...

This is the openly published DATASET relating to the Nature Communications article: Runting, Rebecca, Ruslandi, Ruslandi, Griscom, Bronson, Struebig, Matthew J., Satar, Musnanda, Meijaard, Erik, Burivalova, Zuzuna, Cheyne, Susan M., Deere, Nicolas, Game, Edward, and others. (2019) Larger gains from improved management over sparing–sharing for trop...

Gibbons are highly territorial and have two key areas within these territories. The core area in which we find all sleeping trees and the trees from which the gibbons duet and the wider home range (HR) which has varying levels of overlap with neighbouring gibbon groups. The core area is strenuously defended, with the wider HR being more of a shared...

We present an update on the photographic detections from camera traps and the activity patterns of Borneo’s four small cats, namely, Sunda Leopard Cat Prionailurus javanensis, Flat-headed Cat P. planiceps, Marbled Cat Pardofelis marmorata, and Bay Cat Catopuma badia, at two sites in Central Kalimantan, Indonesia. Camera trap survey data of 10 years...

We report the first in-depth evidence of targeted mushroom foraging in an Asian colobine. Using direct observations (2010–2018) and camera traps (2008–2018) in the Sebangau Forest, Central Kalimantan, Indonesian Borneo, we show how adult female red langurs (Presbytis rubicunda) are regularly descending to the ground to consume mushrooms. We recorde...

Tropical forests are globally significant for both biodiversity conservation and the production of economically valuable wood products. To deliver both simultaneously, two contrasting approaches have been suggested; one partitions forests (sparing), the other integrates both objectives in the same location (sharing). To date, the ‘sparing or sharin...

We develop a time budget model for the hylobatid family with the aim of assessing the extent to which their contemporary and historical biogeographic distributions might be explained by ecological constraints. The model uses local climate to predict time budgets, and from this the limiting size of social group that animals could manage at a given l...

We present an update on the photographic detections from camera traps and the activity patterns of Borneo's four small cats, namely, Sunda Leopard Cat Prionailurus javanensis, Flat-headed Cat P. planiceps, Marbled Cat Pardofelis marmorata, and Bay Cat Catopuma badia, at two sites in Central Kalimantan, Indonesia. Camera trap survey data of 10 years...

Biodiversity conservation in South East Asia is under international pressure, from illegal wildlife trade, agroforestry industry, mining and logging. In Bangladesh, North East India, China and Myanmar, among a hotspot of biodiversity live the hoolock gibbons, a genus gathering three species, all threaten by anthropogenic pressure and all classified...

Clouded leopards are among Asia's most widely distributed felids, but also among its least known and most vulnerable. Clouded leopards occur in some of the most rapidly disappearing forests in the world, yet a comprehensive assessment of their status and habitat use is lacking, which in turn limits identification of their priority conservation need...

Clouded leopards are among Asia's most widely distributed felids, but also among its least known and most vulnerable. Clouded leopards occur in some of the most rapidly disappearing forests in the world, yet a comprehensive assessment of their status and habitat use is lacking, which in turn limits identification of their priority conservation need...

The importance of Southeast Asia's tropical peat swamp forests for biodiversity is becoming increasingly recognised. Information on species presence within peatland areas is scant, however, limiting our ability to develop species conservation strategies and monitor responses to human activities. We compile species presence records for the Sebangau...

Gorillas are complex and intelligent primates, with the western-lowland sub-species being a familiar favourite in zoo collections across the world. Blackpool Zoo currently houses a breeding troop of six individuals. Captive living can raise some issues for gorillas which, in the wild, live in large family groups and travel fair distances to maintai...

In the original publication of this article, the Table 2 was published incorrectly. The revised Table 2 is given on the following page.

Activity budget comparisons between groups or individuals in the wild and those in captivity are commonly used to determine the range of wild-type behaviors that nonhuman animals in captivity perform. These comparisons are conducted with the view that individuals displaying a greater range of wild-type behaviors have enhanced welfare. Such comparis...

Using direct observations and camera traps at eight sites across Indonesian Borneo we show how red langurs (Presbytis rubicunda) are more terrestrial than previously believed, regularly coming to the ground. This unusual behavior has been found at six of the eight sites surveyed. We find that red langurs come to the ground more frequently in distur...

This annex presents ape abundance estimates at the site level. The term "site" refers to a protected area and its buffer zone, a logging concession or group of concessions, or any discrete area where a survey has taken place in the past two decades, although this annex also lists a few sites that were last surveyed in the 1970s and 1980s. Most of t...

Little is known about the spatial ecology of the Sunda clouded leopard (Neofelis diardi). Being rare and elusive rainforest dwellers, studying them is difficult. Basic knowledge on their home ranges and social organization is lacking, yet is crucial for maintaining viable populations in protected areas, in the scope of this Vulnerable species' cons...