Dajun Wang

Dajun Wang
Peking University | PKU · School of Life Sciences

PhD

About

73
Publications
30,466
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Publications

Publications (73)
Article
Full-text available
Efficient and effective monitoring methods are required to assess population status and gauge efficacy of conservation actions for threatened species. Here we review the spectrum of field methods useful for monitoring distribution, occupancy, abundance, and population trend for the five species of Asian terrestrial bears. Methods reviewed include e...
Article
Large mammalian carnivores have undergone catastrophic declines during the Anthropocene across the world. Despite their pivotal roles as apex predators in food webs and ecosystem dynamics, few detailed dietary datasets of large carnivores exist, prohibiting deep understanding of their coexistence and persistence in human-dominated landscapes. Here,...
Article
Full-text available
Biodiversity conservation relies on effective practical methods for assessing species occurrences and distributions, particularly for elusive species. Generalist carnivores are widely distributed and relatively abundant predators with broad dietary ranges, and as such could potentially serve as “biodiversity samplers” of sympatric prey communities....
Article
Full-text available
ContextThe downlisting of giant panda (Ailuropoda melanoleuca) from Endangered to Vulnerable in IUCN Red List confirms the effectiveness of current conservation practices. However, future survival of giant panda is still in jeopardy due to habitat fragmentation and climate change. Maintaining movement corridors between habitat patches in the newly...
Article
The use of a charismatic umbrella species as surrogate for sympatric species is often advocated as an efficient approach. However, comprehensive evaluations from a spatio-temporal perspective are few, leaving the long-term effectiveness of such practices remain uncertain. We modeled the habitat change for giant panda and eight sympatric mammalian s...
Article
Full-text available
As both a flagship and umbrella species, the giant panda (Ailuropoda melanoleuca) is one of the most heavily invested species in conservation. Here, we report the wide distribution range retreat of the leopard (Panthera pardus, 81% loss), snow leopard (P. uncia, 38%), wolf (Canis lupus, 77%) and dhole (Cuon alpinus, 95%) from protected areas in the...
Article
Full-text available
The Mountains of Southwest China is a global biodiversity hotspot. The Camera-trapping Network for the Mountains of Southwest China (SW China Network) has been established as one of the regional camera-trapping networks to measure biodiversity in China. This network was first initiated by Peking University in 2002, and now includes numerous partner...
Article
Full-text available
Flagship species have been used widely as umbrella species (i.e., species with large home range whose protection often provides protection for sympatric species) in the management of China's nature reserves. This conflation of flagship and umbrella species is best represented by the giant panda (Ailuropoda melanoleuca) and other large, endangered m...
Book
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The Field Guide to the Wildlife of Southwest China allows readers to enter the fascinating world of Southwest China, a biodiverse hot spot teeming with interesting wildlife. This field guide, designed to inform nature reserve staff, students of natural history, and casual wildlife tourists alike, presents 92 mammal species and 31 pheasant species (...
Article
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The Przewalski's gazelle (Procapra przewalskii) is one of the most endangered ungulates in the world, with fewer than 2,000 individuals surviving in nine habitat fragments on the Qinghai-Tibet Plateau and isolated by human settlements and infrastructure. In particular, the Qinghai-Tibet railway, which crosses the largest part of the gazelle's distr...
Article
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The practical value of the single species approach to conserve biodiversity could be minimal or negligible when sympatric species are limited by factors that are not relevant to the proposed umbrella species. In this paper, we quantitatively evaluated: (1) habitat suitability and potential movement corridors of a single umbrella species, giant pand...
Article
Full-text available
Dietary information is lacking in most of small to mid-sized carnivores due to their elusive predatory behaviour and versatile feeding habits. The leopard cat (LPC; Prionailurus bengalensis) and the Asiatic golden cat (AGC; Catopuma temminckii) are two important yet increasingly endangered carnivore species in the temperate mountain forest ecosyste...
Article
Full-text available
The giant panda (Ailuropoda melanoleuca) is no longer Endangered on the International Union for the Conservation of Nature's (IUCN) storied Redlist. The decision to downlist the panda to Vulnerable has its foundation in a systematic assessment of population parameters as determined by China State Forestry Administration's circa decadal national sur...
Article
The community structure of grand-dwelling vertebrates in the Wanglang Natural Reserve, Sichuan Province, was examined in relation to a wide range of habitat changes associated with logging, tourism, and restoration measures. Eight sampling sites from a range of habitats were monitored using drift-fences and pitfall traps from August to November 200...
Article
Full-text available
Understanding the interactions between species and their coexistence mechanisms will help explain biodiversity maintenance and enable managers to make sound conservation decisions. Mesocarnivores are abundant and diverse mid-sized carnivores and can have profound impacts on the function, structure and dynamics of ecosystem after the extirpation of...
Data
Survey effort of each camera-trapping station in Minshan Mountains, Southwest China. (XLSX)
Data
Camera-trapping detections of mesocarnivores in Minshan Mountains, Southwest China. (XLSX)
Data
Number of detections, camera days in each month for all 5 species and χ2-test results on detection distribution to camera-days in the remote camera survey from 2004 to 2015 in Minshan Mountains, Southwest China. (DOCX)
Data
Number of survey locations, survey efforts, and detections (number of locations which detected the species) for each species in the remote camera survey from 2004 to 2015 in Minshan Mountains, Southwest China. (DOCX)
Data
Fitted models for each species pair in the two species occupancy modeling. The term “S” in parentheses denotes that the occupancy probability or detection probability of species were estimated separately for each species, and “·” indicates that the parameter is constant. Absence of γ(·) in the model notation implies that γ = 1 and absence of r(S) i...
Article
Valid conservation and management of wildlife requires a well-developed monitoring network infrastructure. During the past decades, camera-trapping has become a strong tool for Chinese nature reserves to survey their large mammals and birds, and provides substantial data for us to learn the wildlife distribution and status at both regional and stat...
Article
Full-text available
The biological inventory within established protected areas is fundamental for biodiversity research and monitoring at both regional and national levels, and camera-trapping has been considered one of the most efficient tools for inventorying mammal communities. Laohegou Nature Reserve is located in the northern Minshan Mountains, Sichuan Province,...
Article
Understanding the diets of carnivores is essential for resolving food web interactions and the population dynamics of both prey and predators and for designing effective strategies for species and ecosystem conservation. As effective predators, wild felids play important roles in various ecosystems, but relatively little is known about the dietary...
Article
The masked palm civet (Paguma larvata) is one of the most common mesocarnivores in the mountain ecosystem of Southwest China, where mesocarnivores may play critical roles due to loss of apex predators. Given their elusive nature, genetic analysis based on noninvasive survey techniques is a promising approach to determine the population dynamics and...
Article
Human population growth is a major threat to the biodiversity of mammals in China. Rapid development of infrastructure, pollution, and poor enforcement of environmental laws in China have altered the landscape and accelerated the extinction rates of mammals. To maintain biodiversity and conserve the mammals of China, it is essential to develop moni...
Article
Full-text available
The Tibetan sacred mountains (TSMs) cover a large area and may represent a landscape-scale conservation opportunity. We compared the conservation value of forests in these mountains with the conservation value of government-established nature reserves and unmanaged open-access areas in Danba County, southwestern China. We used Landsat satellite ima...
Article
Full-text available
During the last two decades, infrared-triggered camera-trapping has been widely used in wildlife and biodiversity research and conservation. In the areas of wildlife ecology research, animal species inventory , biodiversity monitoring and protected area management in China, considerable outputs have been produced by scientific research and conserva...
Article
Full-text available
Asiatic black bears (Ursus thibetanus) are declining throughout much of their range. In China they are partially protected by a nature reserve system and rely heavily on hard mast as a food source prior to winter denning. Bears may compensate for mast shortages by raiding agricultural crops and killing livestock, mainly outside reserves where they...
Article
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The establishment of corridors can offset the negative effects of habitat fragmentation by connecting isolated habitat patches. However, the practical value of corridor planning is minimal if corridor identification is not based on reliable quantitative information about species-environment relationships. An example of this need for quantitative in...
Article
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The endangered Przewalski's gazelle (Procapra przewalskii) experienced severe habitat loss and population decline over the last century. Illegal hunting of gazelles has been largely prevented since 2002, leaving fencing of pastures as one of the main threats to the gazelle. We conducted surveys on 810 km of parallel transects on 8 gazelle-occupied...
Article
Full-text available
During the last two decades, infrared-triggered camera-trapping has been widely used in wildlife and biodiversity research and conservation. In the areas of wildlife ecology research, animal species inventory , biodiversity monitoring and protected area management in China, considerable outputs have been produced by scientific research and conserva...
Article
Full-text available
The snow leopard (Panthera uncia) inhabits the rugged mountains in 12 countries of Central Asia, including the Tibetan Plateau. Due to poaching, decreased abundance of prey, and habitat degradation, it was listed as endangered by the International Union for Conservation of Nature in 1972. Current conservation strategies, including nature reserves a...
Conference Paper
Full-text available
Brown bears Ursus arctors are the largest carnivores on Tibetan plateau. Human-bear conflicts such as house damaging and livestock killing have become serious problems in the past decade and retaliatory huntings were increasing. Understanding ecological process of them will be the first step in making a conservation plan. We conducted sign surveys...
Article
Full-text available
Przewalski's gazelle (Procapra przewalskii) is a rare species endemic to China. Only 200 - 300 individuals were estimated to survive around the Qinghai Lake by the 1990s. Recent work has revealed that the status of the species is less precarious than indicated by earlier reports; 602 individuals were recorded in 2003. Here, we describe detailed dis...
Article
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The snow leopard is a keystone species in mountain ecosystems of Central Asia and the Tibetan Plateau. However, little is known about the interactions between snow leopards and sympatric carnivores. Using infrared cameras, we found a rocky junction of two valleys in Sanjiangyuan area on the Tibetan Plateau where many mammals in this area passed and...
Article
Full-text available
The world's network of protected areas (PAs) plays a critical role in biodiversity conservation. The management expertise within PAs is a function of the training, support and depth of the staff tasked with protecting the resources and should be a significant factor determining the distribution of wildlife species. However, there are few measurable...
Article
Full-text available
Wildlife monitoring plays a critical role in evaluating the management and conservation of biodiversity. During monitoring activities in Chinese nature reserves dedicated to giant panda conservation, indirect sign surveys along fixed transects are the standard methodology used to monitor large-mammal populations. Camera-trapping has been recently i...
Article
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Human-wildlife conflicts often spur retaliatory killing, which may be a major threat to some wildlife species. Asiatic black bears depredate crops and livestock and also attack humans. We investigated whether human–bear conflicts in Sichuan Province, southwestern China, resulted in increased bear poaching. We conducted semi-structured interviews wi...
Article
Full-text available
Monitoring programs are important for effective conservation and management programs. However, most of these programs rely on indirect sign surveys of elusive animals that often leave cryptic signs of their presence. In Sichuan Province, China, sign surveys are oriented mainly toward giant panda (Ailuropoda melanoleuca) populations but also are use...
Article
Full-text available
We report on the use of infrared-triggered cameras as an effective tool to survey phasianid populations in Wanglang and Wolong Nature Reserves, China. Surveys at 183 camera-trapping sites recorded 30 bird species, including nine phasianids (one grouse and eight pheasant species). Blood Pheasant Ithaginis cruentus and Temminck’s Tragopan Tragopan te...
Article
Full-text available
Aim To create a fine-scale map of the distribution of Asiatic black bears, identify landscape variables affecting the spatial range of this species and assess population trends using presence–absence data and opinions of local villagers. Location Sichuan Province, south-western China. Methods We divided the province into 15 × 15 km cells, stratifie...
Article
Full-text available
The small number of giant pandas (Ailuropoda melanoleuca) in the world makes this the only species of bear classified as globally endangered on the IUCN red list. The latest rangewide population estimate was derived from scats (feces) found along transects throughout the geographic range of the species. Scats were differentiated into ,1,600 individ...
Article
Full-text available
Monitoring the effectiveness of management activities within reserves is always a complicated task. When the focus of management activities is mammals, it is difficult to monitor their populations in a way that is rapid, effective, and inexpensive. We report on a mammal survey of a reserve in southwest China using remote-trip cameras. We surveyed 3...
Article
Reproductive activities of six giant panda females (Ailuropoda melanoleuca) living in the Qinling Mountains of China (Shaanxi Province) were recorded from 1989 into early 1995. Data on mating and birth dates, litter size, cub sex and den use were collected for three of the pandas. At this site, pregnant females migrated to lower elevations in advan...