Suchergebnisse

Sustained poaching over the past decade has led to significant loss of black (Diceros bicornis) and southern white (Ceratotherium simum simum) rhinoceroses across South Africa. Whereas much research has focussed on the heavily targeted state-owned populations, there is little understanding of the trends and challenges faced by rhino populations held in the private sector. Private rhino ownership has increased substantially across South Africa over the past three decades, with over 42% of the entire rhino population now in private ownership. Although total rhino numbers on private properties are still increasing, the number of properties owning rhinos is declining. This suggests a move away from traditional extensive properties to large, single-species breeding facilities, which are less valuable from a conservation perspective. The economic impact associated with increased poaching of rhinos over the past decade is the major challenge to private rhino ownership and may encourage disinvestment in rhinos. Some private rhino owners advocate for trade in rhino horn to generate the funds necessary for continued protection of their animals. However, other options to reduce disinvestment, such as local community-engagement projects, are likely to be more favourably received by the wider conservation industry.

A range of methodological frameworks is available to assist decision-makers with evaluations of projects concerned with biodiversity conservation (the protection, management or restoration of biodiversity), but their uptake has been relatively limited. Some researchers suggest a lack of research interest to be one contributory factor, in particular in relation to the application of interdisciplinary approaches that integrate methods from the natural and social sciences, despite the insights that such approaches can bring. We evaluated this assertion by examining the provenance of some examples of current research in this area. Specifically, we compared two exemplar papers published in a conservation journal and one in an interdisciplinary ecological economics journal. We scored the cited references in each paper according to standard subject categories. These scores were then weighted and aggregated to give an overall quantified subject category distribution for each of the three focal papers. Comparison of the three papers revealed an expected dominance of subject categories most closely aligned with ecological science. However, there were different patterns of provenance in the three papers. One paper from the conservation journal was dominated by citations of other papers in the biodiversity conservation literature. The second paper from the conservation journal and the paper from the ecological economics journal displayed similar overall patterns of disciplinary provenance, although they diverged in disciplinary provenance for the less commonly cited disciplines, such as the social sciences. Our results suggest that research in biodiversity project evaluation may be developing along at least three, relatively distinct, pathways rather than as a genuinely interconnected research theme. This is likely to hinder progress in research but also in practical application of the techniques, in terms of reducing the likelihood of identifying inadequate, inappropriate or inefficient conservation investments. There is still considerable opportunity for further collaboration in the areas of biodiversity evaluation among researchers in a range of disciplines, including ecology, economics, statistics, forestry and wildlife management. Biodiversity conservation evaluation is a growing field, but its potential is unlikely to be fulfilled unless biodiversity researchers seek to develop a more integrated community, and particularly, to learn from researchers in other disciplines where evaluation has a longer history.

Wildlife has existed in urban areas since records began. However, the discipline of urban ecology is relatively new and one that is undergoing rapid growth. All wildlife in urban areas will interact with humans to some degree. With rates of urbanisation increasing globally, there is a pressing need to understand the type and nature of human–wildlife interactions within urban environments, to help manage, mitigate or even promote these interactions. Much research attention has focussed on the core topic of human–wildlife conflict. This inherent bias in the literature is probably driven by the ease with which it can be quantified and assessed. Human–wildlife conflicts in terms of disease transmission, physical attack and property damage are important topics to understand. Equally, the benefits of human–wildlife interactions are becoming increasingly recognised, despite being harder to quantify and generalise. Wildlife may contribute to the provision of ecosystem services in urban areas, and some recent work has shown how interactions with wildlife can provide a range of benefits to health and wellbeing. More research is needed to improve understanding in this area, requiring wildlife biologists to work with other disciplines including economics, public health, sociology, ethics, psychology and planning. There will always be a need to control wildlife populations in certain urban situations to reduce human–wildlife conflict. However, in an increasingly urbanised and resource-constrained world, we need to learn how to manage the risks from wildlife in new ways, and to understand how to maximise the diverse benefits that living with wildlife can bring.

Context As urbanisation continues to increase on a global scale, people are becoming increasingly distanced from nature. Fewer opportunities to encounter nature mean that the benefits of engaging with nature are often not realised by urban residents. In response to this, there is a growing number of initiatives that aim to connect people with nature, for the benefit of individuals, communities and nature conservation. However, in order to maximise these benefits, it is important to understand the potential transformative effects for participants, both on a personal level and in terms of wider impacts. Aims In this study, we evaluate the social outcomes of a participatory wildlife conservation project in an urban area in north-east England, using hedgehogs as the focal species. Methods Based on an approach of community volunteers working alongside scientific researchers in an evaluation of hedgehog urban habitat use, we examine the transformative effects of this involvement at the individual and community levels via qualitative semi-structured interviews with community volunteers. Key results Participants were motivated by personal wellbeing factors such as enjoying proximity to the study species, learning and social factors. Participation in the study itself indicates a degree of motivation for engaging with a study of this sort. Nevertheless, involvement in the study was a successful vehicle for increasing participants' engagement with nature both during the study and potentially into the future, particularly in terms of biological recording and gardening for wildlife. Conclusions Participation in a wildlife study is a positive experience for many volunteers, leading to actual and potential changes in both personal and wider social outcomes. Implications Participatory initiatives such as the one described have an important role to play in signposting and supporting volunteers to follow future environmental aspirations and maximise the personal and social benefits associated with participation. This could be enhanced by ensuring that volunteering opportunities are linked in with pre-existing community-based networks that can act as advocates for environmental and wildlife conservation.

Human–wildlife conflicts are increasing throughout the world, principally due to a combination of human population growth, increased pressure on land and natural resources and climate change. Many human–wildlife conflicts stem from differences in objectives between various stakeholder groups, especially where the wildlife in question is a resource that can be exploited for economic or cultural benefit, or where the conservation of wildlife is at odds with human population growth or development pressure. Conflicts can be exacerbated by an incomplete understanding of their causes and/or inappropriate intervention measures. Many traditional forms of intervention are also subject to increasing scrutiny and criticism from society. Here, we highlight the potential strategic benefits that can be made by an interdisciplinary approach to human–wildlife conflict situations, by integrating knowledge and understanding across the natural and social sciences. We also stress the potential tactical benefits from combining new approaches to management with more traditional ones. We emphasise the potential contribution of more recent developments in decision-making under conditions of limited data availability and uncertainty. Finally, we recommend that monitoring should play a more prominent role, both in assessing the role of stakeholder engagement in participatory decision-making and in contributing to the evidence base that will allow competing hypotheses about specific systems to be evaluated in an iterative manner.

The sustainability of rural development depends on the distribution of the social and environmental resources needed to maintain and improve the vitality of rural areas. Here we examine the complexity of measuring patterns of distribution using examples of socioeconomic data on rural poverty and affluence as well as data on environmental quality and species richness. We demonstrate how changes in the base spatial units used for analysis have different effects on different measures of inequality. The effects of such changes in spatial resolution also depend on the underlying processes that generate the data. The results of our investigations into the effects of scale on the assessment of inequality suggest that, where data come from both the social and natural science sources, the most appropriate level for analysis is that of the finest common resolution. This may result in redundancy of effort for some types of data but any such disadvantage is offset by the benefits of identifying inequalities that are masked at coarser resolutions.

Inequalities may lead to injustice, and are recognized increasingly as contributing to a wide range of social problems. The English uplands are characterized by low population densities, few services and low household incomes compared with other rural areas, giving rise to the potential for injustice. We use a dataset combining social, economic and environmental variables to develop a new integrative characterization of rural areas in England. We show that, despite lower income and fewer services, upland areas have some advantages compared with other rural areas, such as greater social and environmental 'richness', less pollution and less reported crime. For the more financially- and physically-mobile people living in upland areas, these benefits may outweigh the costs. However, for other sectors of society, such as the young, the old and the disabled, there may be a sense of injustice stemming from the lack of affordable housing, transport and other public services.

Context
Comprehensive evaluation of biodiversity conservation programs is essential for informing their development as well as the design of future programs. Such evaluations should not be limited to whether targets have been met, but should also assess the cost and efficiency of meeting targets, and any factors contributing to success or failure.

Aims
We aimed to evaluate the effectiveness and efficiency of individual-species conservation programs, and the biological and operational factors affecting these. We used the species action plans (SAPs) within the UK Biodiversity Action Plan as our case study.

Methods
We used cost–effectiveness analysis, cost–utility analysis and threat-reduction assessment to evaluate the effectiveness and efficiency of individual SAPs. Then we used statistical models to investigate the relative importance of biological and operational factors affecting cost, effectiveness and efficiency.

Key results
Conservation plan success was affected by both biological and operational factors. Invertebrate plans tended to be less effective, whereas vertebrate plans were less efficient. Plans for widely distributed species with longer generation times tended to be less efficient. Of the three different evaluation approaches, cost-effectiveness analysis offered the best combination of ease of data collection and accuracy of data content.

Conclusions
The most successful SAPs concerned species with short generation times and narrow distributions. Operationally, the most successful SAPs were concise and focussed and showed clear lines of responsibility for implementation.

Implications
Techniques such as cost–effectiveness analysis, cost-utility analysis and threat reduction assessment should be used to inform decisions on maximising the rate of return on conservation investments, although broader ecological implications and socio-cultural benefits should also be considered. The success of conservation plans is influenced by both biological and operational factors. Because biological factors cannot be controlled or altered, where species exhibit characteristics that are likely to make their conservation less effective or efficient, it is critical that operational factors are optimised. High-quality data are necessary to underpin prioritisation decisions, and monitoring to deliver reliable data on both the benefits and costs of conservation should form a core component of conservation programs.

Brushtail possums (Trichosurus vulpecula) were live-trapped for two years prior to and following depopulation in two ~6-ha areas of native forest in New Zealand. The populations had recovered to 55% of the original density at one site and 40% of the original density at the other site, two years after the depopulation. The post-removal populations responded to reduced density with a higher proportion of females breeding, higher survival rate of young, and less seasonal fluctuation in body condition. The initial recolonisation was probably mainly due to surrounding animals shifting their ranges into the depopulated area, rather than long-range dispersal, which resulted in an even sex ratio in the recovering populations. The greater proportion of adult males in the post-removal populations is likely to increase sexual contact rates for females. This would enhance the dissemination of a viral-vectored biological control agent through the population, when used as part of an integrated control program.