Tackling environmental crime is an international priority, as stated by many individual nations and by multinational organizations such as Europol. Quantifiable evidence to highlight efforts to address environmental crimes, however, remains scant. We use Interpol Red Notices, a global enforcement tool used to apprehend criminals, including environmental criminals, to examine how environmental crime is represented in this database. Notwithstanding the fact that these Notices have evidenced utility in apprehending environmental criminals, we find low application of this tool in apprehension of these criminals, with only 21 Red Notices of a sample of 4,464 (of the 7,010 active Notices) published as of 3 December 2023 being for catagorized as for environmental crimes. We argue this may indicate gaps or weaknesses in environmental enforcement pathways, and suggest that barriers to use of global enforcement tools should be addressed.

The brazilwood tree Paubrasilia echinata is endemic to the Atlantic Forest of Brazil and is categorized as Endangered on the IUCN Red List as a result of habitat loss and overexploitation. Phylogenomic analysis has identified five groups based on genotype, including the arruda-RJ lineage endemic to the state of Rio de Janeiro. We propose a prioritization classification protocol for Atlantic Forest fragments and evaluate the effectiveness of conservation for this species in Rio de Janeiro. We collated a total of 164 occurrence records of P. echinata from fieldwork during 2004–2024 and from the Global Biodiversity Information Facility. We classified forest fragments containing the species as high, medium or low priority for conservation. The arruda-RJ lineage persists in 43 forest fragments in the coastal region, 30 of which are documented for the first time here. Most forest fragments are small and have an uneven population structure. Urbanization is the primary threat to the survival of this lineage. We documented protected areas in 33 fragments, and identified conservation opportunities. The greatest number of forest fragments is in the northern region where there are the most protected areas and the brazilwood populations hold the greatest local genetic diversity. We propose targeted conservation actions for P. echinata arruda-RJ in eight forest fragments identified as high priority and with the greatest potential for conservation of the lineage. We identified 25 fragments as medium priority and 10 fragments as low priority. Our approach is applicable to other lineages of P. echinata and is aligned with Global Biodiversity Framework targets.

The Covid-19 pandemic has had global impacts, leading to changes in human activities and resulting in both positive and negative outcomes for the natural environment. To more fully understand the pandemic’s impact on the conservation of ecosystems and conservation actors or organizations, this research investigated its impact on the Caribbean island nation of Trinidad and Tobago. Data were collected through an online questionnaire and targeted follow up semi-structured interviews. The results showed that the pandemic led to many challenges for some actors, including job loss and cancellation of fieldwork and outreach events. More positively, there were opportunities for some actors to adapt or find new modes of operation, which unexpectedly made some of them more effective at achieving their goals. The results also suggest that the impacts of the pandemic on ecosystems were both positive and negative. On the positive side, curfews and lockdowns restricted access to natural areas, resulting in benefits such as ecosystem recovery. More negatively, there were issues associated with spikes in illegal activities such as poaching and squatting in protected areas. Respondents suggested that better access to funding and local government support would have helped conservation actors be in a better position to adapt to the changes brought about by the pandemic. The results of this research provide much needed insight into how the Covid-19 pandemic is and will continue to impact conservation actors and their initiatives. Further studies can build on this research to explore the impact of pandemics on conservation in the long term.

South of 25°N, the rugged, riparian, mixed evergreen forests of eastern Bangladesh mark the western edge of the ranges of the globally Vulnerable Asiatic black bear Ursus thibetanus and sun bear Helarctos malayanus. According to the IUCN Red List, the distribution of bears in Bangladesh is unclear: black bears are described as ‘scattered’ and ‘likely to be very low in number’ and sun bears as ‘vagrants’ entering from the adjoining north-east Indian forests. These statements are not based on any population or habitat assessments, impeding focused research and conservation investment. We compiled recent evidence of bear presence in Bangladesh based on camera trapping, literature reviews and analysis of media reports. From peer-reviewed and grey literature published during 2010–2022 we traced 43 verifiable accounts of black bears in the country. Our camera-trap survey in Rajkandi Reserve Forest produced the first ever evidence of a small population of black bears in north-eastern Bangladesh. Two field studies (in 2016 and 2021) reported camera-trap observations and multiple incidents of poaching of sun bears in Kassalong Reserve Forest and Sangu-Matamuhuri Reserve Forest in south-eastern Bangladesh. Media reports on conflict incidents presented 83 human casualties (80 injured, three dead) and 13 bear casualties (six dead, seven rescued) during 2003–2023. The incidents peaked in the summer (17); 79% were reported during 2018–2023. Cognizant of the fact that the absence of evidence is not evidence of absence, our study calls for systematic conservation measures for both of these bear species in unprotected hill forests in eastern Bangladesh.

Prey abundance is a critical determinant of tiger Panthera tigris population recovery, necessitating robust long-term monitoring to assess prey population trends and inform management interventions. We estimate the density trend of principal tiger prey populations (chital Axis axis, chousingha Tetracerus quadricornis, nilgai Boselaphus tragocamelus, sambar Rusa unicolor and wild pig Sus scrofa), in Kawal Tiger Reserve, Telangana, India, for 2010–2022. Using 28 systematically placed 4 km line transects, we observed an increase in the chital population, whereas the populations of sambar, nilgai and chousingha remained stable. The wild pig population fluctuated over this period. Despite Kawal’s designation as a tiger reserve in 2012, which enhanced protection, there is no resident tiger population in the Reserve. In the last decade, 15 tigers (of which only two were females) dispersed to Kawal from a nearby population in Maharashtra. Using prey availability models, we predicted that prey in the Reserve’s 893 km2 core area could support > 30 tigers in 2022. However, to establish a tiger population with > 30 individuals may require the reintroduction or assisted dispersal of females and enhanced connectivity with neighbouring protected areas that have source populations. This study highlights the critical importance of long-term prey monitoring for informing evidence-based conservation strategies to restore Kawal as a viable habitat for tigers.

Negative human–wildlife interactions are a growing problem, particularly for people living near protected areas and wildlife refuges. In Kenya, African savannah elephants Loxodonta africana threaten food security for subsistence farmers by crop foraging, which can jeopardize conservation efforts if farmers retaliate against elephants. To inform conservation and management, this study had three objectives: (1) to evaluate stakeholder participatory models of human–elephant conflict; (2) to note any novel or underrepresented variables in the models; and (3) to determine if there were indicators for assessing the success of mitigation programmes using a biocultural approach. We conducted participatory modelling sessions in six villages in rural Kenya using fuzzy cognitive mapping (n = 206 participants). Farmers created group visual models with variables related to conflict with elephants. A total of 14 variables were common across all six villages, with the two highest centrality scores (a measure of importance to overall dynamics) associated with income and feelings of security. Most variables fell into two categories: environmental interactions, and policy and management. Multiple variables such as road infrastructure (drivers) and soil compaction (consequences) were identified as aspects of conflicts that are under-reported or absent in scientific literature, as well as potential socio-cultural indicators. The participatory method used is a tool for gaining more refined insights into interactions with elephants, with implications for other complex conservation issues or wildlife interactions. A more holistic view of the impacts of human–elephant interactions as demonstrated here can lead to sustainable, co-developed programmes that benefit both farmer livelihoods and elephant conservation.

Our research focused on the Critically Endangered Chinese pangolin Manis pentadactyla in the Siang River basin of Arunachal Pradesh in north-east India, home to the Indigenous Adi People. We found evidence of a resident Chinese pangolin population in the study area after assessing pangolin presence from walking surveys and camera trapping at pangolin burrows. We assessed the effectiveness of positioning camera traps based on the local knowledge of the Adi People. Camera-trap capture rates (5.1%) were comparable to or higher than those reported in other studies across Africa and Asia, highlighting the value of incorporating local ecological knowledge in camera-trap surveys. Our findings underscore the complementary nature of Indigenous knowledge and scientific methods, especially for elusive species such as pangolins.

Changing human behaviours is a key facet of addressing global environmental issues. There are many factors (i.e. determinants) that could influence whether an individual engages in pro-environmental behaviour, and understanding these determinants can improve efforts to protect and restore the natural environment. However, despite published criticism of poor survey design, there is little practical guidance on how to capture these determinants accurately in closed-answer surveys (those with predefined answer options). A recent literature review summarized behavioural determinants of pro-environmental behaviour. We build on this by providing practical insights into how 17 key pro-environmental behavioural determinants can be measured through closed-answer surveys. We reviewed 177 papers published during 2013–2023 that met the criteria for inclusion. These papers captured 624 measurements of the 17 determinants. We found seven types of question formats used, including scales (Likert scales, semantic scales and a pictorial scale), multiple-choice questions (where respondents could select either one or more answer options), binary questions and ranking questions. We then synthesized design considerations both specifically for each format and more broadly across surveys. These considerations included using validated measures, reducing cognitive burden and biases (e.g. social desirability bias, order effects, recall bias), selecting the question format (e.g. different formats of multiple-choice or binary questions) and using best practices for scale questions. The insights collected through this review provide practical advice for developing closed-answer surveys that robustly and usefully measure key determinants of pro-environmental behaviour.

Wildlife conservation on private land is an important approach that is increasingly utilized to protect biodiversity and can help contribute to the 30 by 30 target of the Global Biodiversity Framework. In 2018, a Chilean non-profit conservation organization launched a land conservation programme aiming to build long-term partnerships with private landowners to protect critical habitat for threatened amphibians in Chilean Patagonia. Here we describe a new locality record of the micro-endemic, Endangered Barrio's frog Insuetophrynus acarpicus found at a site that joined the programme in 2020. Barrio's frog is ranked 11th in the list of Evolutionarily Distinct and Globally Endangered amphibians. Our systematic literature search showed that most aspects of the natural history and ecology of this species are unknown, limiting our ability to provide actionable science to inform its conservation. The newly described Barrio's frog population is the eighth known locality of this species and one of only three occurring within a protected area. Habitat quality assessments indicated optimal conditions for most of the measured habitat parameters in the high-gradient stream where the species occurs. This case study illustrates that long-term partnerships between private landowners and conservationists can be used as an effective tool to protect the habitat of highly threatened amphibians.

In the current IUCN Red List assessment, the south-western distribution range of the brown bear Ursus arctos in Nepal ends in Upper Mustang, in the central Himalaya, and extends northwards into the Tibetan Autonomous Region of China. Although brown bears have been recorded further west of Upper Mustang, details of these findings have not been published previously. Using camera traps, we present new evidence of brown bears in Limi Valley, Upper Humla, north-western Nepal. Covering a study area of 336 km2, we deployed 61 camera traps for 3,145 trap-nights during July–October 2021 and 10,748 trap-nights during June 2022–October 2023. In 2021 we recorded a single independent image of a brown bear, followed by 23 independent images during 2022–2023. The images were captured during spring and autumn but not in summer and winter. These new records increase the distribution range of the brown bear in Nepal, extending its global range south-westwards. Our results indicate the significance of Limi Valley as a stronghold for brown bears in Nepal and underscore the importance of formally protecting the currently unprotected wildlife habitats in Limi Valley. Our study emphasizes the need for further research into the ecology and population status of brown bears in Nepal.

The rapid decline of wild populations has resulted in complete extinction of many species. In some cases, this outcome has been avoided through the establishment of ex situ conservation breeding populations. These have the aim of safeguarding the survival of the species and ultimately their reintroduction to the wild. In the case of Partula tree snails, conservation work spanning 4 decades has included ex situ breeding and reintroduction attempts. Most Partula tree snails of French Polynesia are categorized as Extinct on the IUCN Red List as a result of the introduction of invasive predators. Ten species survive only in ex situ conservation breeding centres and reintroduction attempts have been underway since 2015. In 2024, a wild population of Partula tohiveana was located, formed as a result of reintroductions to Moorea Island over the previous decade. This is the first Extinct in the Wild invertebrate species to have been re-established through coordinated, interdisciplinary ex situ and in situ conservation actions.

The dhole Cuon alpinus is a large canid that is categorized as Endangered on the IUCN Red List and at risk of global extinction. Information on the spatial distribution of suitable habitat is important for conservation planning but is largely unavailable. We quantified the spatial distribution of potential range as well as the relative probability of dhole occurrence across large parts of the species’ global range. We used the MaxEnt algorithm to produce a multi-scale environmental niche model based on 24 environmental variables and dhole occurrence data from 12 countries. We identified three regions where dhole conservation should be focused: western India, central India, and across the Himalayan foothills through Southeast Asia. Connectivity between suitable areas was poor, so coordinated action among these regions should be a priority. For instance, transboundary dhole conservation initiatives across the Himalayas from southern China, Myanmar, north-east India, Nepal and Bhutan need to be initiated. We also highlight the value of improving dhole population viability on unprotected land and increasing monitoring in the northern parts of its historic distribution, in particular in areas within mainland China.

Illegal hunting of migratory birds across the Mediterranean region is a serious international conservation issue with population-level impacts. We analysed photographs posted on social media platforms to assess the bird species illegally targeted in Lebanon. During 2011–2023 we reviewed 1,844 photographs publicly posted by poachers on Facebook and Instagram. In these images we identified 212 bird species, of which 94% are legally protected. Many are species of conservation concern, with 19 listed as threatened or Near Threatened on the IUCN Red List and 33% experiencing population declines in Europe. The five bird species with the most individuals illegally killed were the barn swallow Hirundo rustica, blackcap Sylvia atricapilla, European bee-eater Merops apiaster, Eurasian golden oriole Oriolus oriolus and ortolan bunting Emberiza hortulana. Raptors and other large soaring birds were particularly prevalent, with 35 species of raptor (particularly the European honey-buzzard Pernis apivorus, Eurasian sparrowhawk Accipiter nisus, common kestrel Falco tinnunculus, short-toed snake-eagle Circaetus gallicus and Levant sparrowhawk Accipiter brevipes) as well as storks, pelicans and cranes. Protected mammals were also posted as trophies, including the Near Threatened striped hyaena Hyaena hyaena. Poachers were present in 44% of photographs and were clearly identifiable 89% of the time, showing little concern about posting illegal activities on publicly accessible social media platforms. Our study is the first to use social media as a tool for assessing illegal hunting activities in Lebanon. We discuss both the use and limitations of this approach, as well as the ways in which social media can be utilized by law enforcement, to promote legal hunting or hunting alternatives and improve conservation education.

We present a new camera-trap record of the Critically Endangered Chinese pangolin Manis pentadactyla in Vietnam, from a survey during January–November 2022 in Kon Ka Kinh National Park, Gia Lai Province. This record is c. 950 km south of the only other previous camera-trap records of the species in Vietnam. We obtained three camera-trap images of an individual M. pentadactyla at 1,600 m altitude, highlighting the potential importance of this Park for M. pentadactyla in Vietnam. We confirmed the identification through expert consultation and morphological analysis. This record suggests that the range of M. pentadactyla extends into central Vietnam. Further research and conservation efforts in Kon Ka Kinh National Park are required, to safeguard this enigmatic species and its habitat.

E-commerce applications have significantly changed how people transact with each other. This includes digital advances that drive illegal wildlife trade. In Indonesia, the Conservation Act of 1990 was enacted before the internet revolution and does not, therefore, adequately cover online illegal wildlife trade. In this study we identified wildlife traded illegally through advertisements published by five large national e-commerce companies and one social media platform operating in Indonesia, using 39 keywords. We also analysed data on wildlife cybercrime court case outcomes, associated criminal networks and their modus operandi. Over 12 months, we found 996 advertisements for wildlife and wildlife products, including of 45 nationally protected species, from 421 accounts. Amongst the six platforms monitored, Facebook Marketplace had the highest illegal wildlife trade traffic. We found that those prosecuted for online illegal wildlife trade were given low sentences. Our analysis of wildlife legislation, focus group discussions and expert interviews showed that the Government of Indonesia Trade Law (2014) and Law on Electronic Information and Transactions (2008) cannot be used to prosecute online illegal wildlife trade cases because these laws do not acknowledge regulations for protected species. Our study emphasizes the urgency of revising the Conservation Act and changing the definition of trade to include advertisements of protected species. We recommend development of screening tools for advertisements and accounts on e-commerce platforms, review of community/user guidelines to prohibit trade of protected species, and strengthening the approach of combining multi-context laws with stakeholder cooperation to prosecute online illegal wildlife trade cases.

The lowland tapir Tapirus terrestris is confined to South America and is categorized as Vulnerable on the IUCN Red List. The species was extinct in the state of Rio de Janeiro in Brazil by the early 20th century but during 2017–2021, 14 individuals from six captive groups were reintroduced through a soft release method in the Guapiaçu Ecological Reserve in the Atlantic Forest. The reintroduced population was continually monitored with camera traps during the pre-release acclimatization period and after release. The released tapirs decreased the proportion of diurnal activity but did not decrease daily activity levels. Their activity patterns differed between the acclimatization period and post-release, as well as between the dry and wet seasons, but there was no difference between the activity of males and females. The tapirs modified their activity patterns over the course of the reintroduction period, showing an increasing resemblance to the behaviour of wild populations.

Despite thousands of individuals entering the illegal wildlife trade each year, assessments of pangolin populations are largely non-existent, even in areas with high exploitation and limited personnel and field equipment. Although pangolins have unique keratin-based scales, there is no universal scale-marking method for individuals despite some pangolin conservation programmes utilizing marking for reference and cataloguing. Each programme currently establishes and manages its own system, resulting in inconsistencies and limiting data sharing. To facilitate pangolin monitoring and research, we developed a standardized method for assigning individual identification numbers, which we call the Pangolin Universal Notching System. This system is neither resource nor training intensive, which could facilitate its adoption and implementation globally. Its application could help to address knowledge gaps in pangolin ageing, reproduction, survivorship, migration and local trafficking patterns, and could be used in combination with other tagging techniques for research on pangolin biology.

Determining whether cryptic remnant animal populations survive within specific landscapes is a conservation challenge and may require multiple types of information. Hainan Island, China, has lost most of its large mammal fauna, with no recent evidence for persistence of large carnivores. We conducted a survey of local ecological knowledge in communities around seven protected areas in 2015, collecting sighting reports of the Asiatic black bear Ursus thibetanus. Respondents living near Wuzhishan National Nature Reserve reported the highest number of dated sightings as well as the most recent sightings. In follow-up interviews, wildlife rangers at Wuzhishan reported recent signs of bears and local hunting, and a possible bear photograph was taken inside the Reserve in 2017. Characteristic bear signs, including fresh diagnostic claw marks on trees, were detected at Wuzhishan in 2021, confirming bear presence. Wuzhishan is the last area in Hainan where large herbivores and carnivores survive, and where local conservation efforts still have the potential to maintain functional forest ecosystems that support megafaunal assemblages.

The overexploitation of wildlife for bushmeat consumption poses a significant threat to biodiversity in sub-Saharan Africa, particularly in Angola, where the problem remains largely unexplored. This study provides the first overview of the regional bushmeat trade in Uíge Province and an analysis of consumption patterns in this socio-economic context. We provide data on the range of species hunted and their respective conservation status, and highlight the sources and structures underlying this regional trade. We conducted qualitative expert interviews with nine bushmeat traders from four communities and a quantitative consumer survey of 204 citizens of Uíge. More than 60% of the respondents consumed bushmeat at least once per week and 23% hunted regularly, indicating that this practice is deeply rooted in society. Of the 16 species sold in the central market in Uíge, five are categorized as threatened or Near Threatened on the IUCN Red List, highlighting the need for control measures. Large parts of the population consider bushmeat consumption to be an integral part of their culture but our results indicate that younger and better educated Angolans are moving away from these traditions and are less likely to practice traditional hunting. These findings suggest that access to comprehensive education and environmentally sustainable livelihoods is key to reducing the unsustainable use of wildlife resources.

Meconopsis florindae Kingdon-Ward, an alpine species endemic to Xizang, China, is extremely scarce and restricted in distribution. Prior to this study, the first and only collection was in 1924. During three targeted field surveys, we rediscovered one small population not far from its type locality but at a significantly higher elevation and occupying a highly specialized ecological niche. Meconopsis florindae is a monocarpic perennial at high risk of extinction and categorized as Critically Endangered on the IUCN Red List because of its limited population and restricted geographical range. Its survival is threatened by anthropogenic activities including nomadic livestock grazing, disturbance and habitat destruction, and habitat alteration as a consequence of climate change. We recommend comprehensive in situ and ex situ conservation measures to protect this species, including establishing a micro-reserve, implementing practical conservation interventions and long-term monitoring, and collecting seeds and preserving them in the Germplasm Bank of Wild Species to safeguard genetic diversity. Field surveys should be expanded to locate additional populations, and local communities should be engaged to raise awareness and support the conservation of this rare plant.