Sarah L. Crowley

Invasive species management will benefit from social impact assessment

Summary Invasive species management aims to prevent or mitigate the impacts of introduced species but management interventions can themselves generate social impacts that must be understood and addressed. Established approaches for addressing the social implications of invasive species management can be limited in effectiveness and democratic legitimacy. More deliberative, participatory approaches are emerging that allow integration of a broader range of socio-political considerations. Nevertheless, there is a need to ensure that these are rigorous applications of social science. Social impact assessment offers a structured process of identifying, evaluating and addressing social costs and benefits. We highlight its potential value for enabling meaningful public participation in planning and as a key component of integrated assessments of management options. Policy implications. As invasive species management grows in scope and scale, social impact assessment provides a rigorous process for recognising and responding to social concerns. It could therefore produce more democratic, less conflict-prone and more effective interventions.

Disagreement About Invasive Species Does Not Equate to Denialism: A Response to Russell and Blackburn

The growth of academic and societal attention to invasive species, their impacts, and their control has been accompanied by frequent controversies and conflicts surrounding management and policy responses. These often include disagreements not only about scientific evidence and its application but also about ethical, cultural, and political differences and divergent assessments of risk [1]. Russell and Blackburn [2] argue that challenges to scientific consensus surrounding biological invasions are on the rise.

Explaining people's perceptions of invasive alien species: A conceptual framework

Human perceptions of nature and the environment are increasingly being recognised as important for environmental management and conservation. Understanding peoples perceptions is crucial for understanding behaviour and developing effective management strategies to maintain, preserve and improve biodiversity, ecosystem services and human well-being. As an interdisciplinary team, we produced a synthesis of the key factors that influence peoples perceptions of invasive alien species, and ordered them in a conceptual framework. In a context of considerable complexity and variation across time and space, we identified six broad-scale dimensions: (1) attributes of the individual perceiving the invasive alien species; (2) characteristics of the invasive alien species itself; (3) effects of the invasion (including negative and positive impacts, i.e. benefits and costs); (4) socio-cultural context; (5) landscape context; and (6) institutional and policy context. A number of underlying and facilitating aspects for each of these six overarching dimensions are also identified and discussed. Synthesising and understanding the main factors that influence peoples perceptions is useful to guide future research, to facilitate dialogue and negotiation between actors, and to aid management and policy formulation and governance of invasive alien species. This can help to circumvent and mitigate conflicts, support prioritisation plans, improve stakeholder engagement platforms, and implement control measures.

Weeds on the web: conflicting management advice about an invasive non-native plant

Summary Invasive non-native plants (INNPs) can have serious and widespread negative ecological and socio-economic impacts. It is therefore important they are managed appropriately. Within domestic gardens management decisions, which will tend to be made by individual members of the public, are likely to vary depending on (a) understanding of problems caused by INNP, and (b) knowledge of best practice. Using content analysis, an approach seldom employed in an ecological context, this study analysed variation in internet-based information sources regarding INNP to determine how this collective discourse might influence risk perceptions and management decisions for domestic garden owners/managers. We used Japanese knotweed Fallopia japonica in the UK, as a case study, as it is one of the most ecologically and economically damaging INNP in the region. Our analysis categorized the types of author disseminating information about Japanese knotweed, the relative frequency of documents between author categories, and variation in content and style between and within author categories. We identified five author categories: environmental NGOs, control companies, government, media and the property market. There was extensive variation in document structure, topics discussed, references and links to other sources, and language style; sometimes this variation was between author categories and sometimes within author categories. The most significant variation in topics discussed between author categories was indirect socio-economic problems, with control companies discussing these most. The number of pieces of legislation referenced and the proportion of militaristic words used were also highly significantly different between author categories. Some documents used neutral terminology and were more circumspect, whilst others were more forceful in expressing opinions and sensational. The author category returning the highest number of documents was the subcategory local government, the shortest of which contained neither links to other information nor referenced any organizations. Further analysis of local government documents revealed conflicting advice regarding the disposal of Japanese knotweed waste material; confusion about this topic could result in decisions being made that spread Japanese knotweed further and are potentially unlawful. The potential implications of our findings for the management of INNP in domestic gardens and societal perceptions of risks posed by INNP are discussed. Synthesis and applications. To help prevent inappropriate management of invasive non-native plants (INNPs), for example Japanese knotweed Fallopia japonica in domestic gardens, we recommend that local and national authorities collaborate and work towards disseminating more consistent messages about (a) the potential socio-economic and ecological problems caused by INNP, whilst avoiding hyperbole, and (b) the most appropriate management techniques.

Killing squirrels: Exploring motivations and practices of lethal wildlife management:

Wildlife management, pest control and conservation projects often involve killing nonhuman animals. In the United Kingdom, introduced grey squirrels Sciurus carolinensis are killed in large numbers to protect remnant populations of European red squirrels Sciurus vulgaris. Grey squirrels are also killed outside of red squirrel areas to protect broadleaved trees from squirrel damage, and as part of routine pest control, opportunistically, and sometimes recreationally. In order to investigate the ways in which this killing is conceived and practised in the United Kingdom, we conducted semi-structured interviews with practitioners and undertook participant observation of squirrel management activities, including lethal control. Analysing these field data, we identified important variations in practitioners’ approaches to killing squirrels, and here we outline three ‘modes of killing’ – reparative/sacrificial, stewardship, and categorical – which comprise different primary motivations, moral principles, ultimate aims, and practical methods. We explore both productive alliances and possible tensions between these modes, and propose that clear, explicit consideration of how and why animals are both killed and ‘made killable’ should be a key component of any wildlife management initiative that involves lethal control.

Considering connections between Hollywood and biodiversity conservation

Cinema offers a substantial opportunity to share messages with a wide audience. However, there is little research or evidence about the potential benefits and risks of cinema for conservation. Given their global reach, cinematic representations could be important in raising awareness of conservation issues and species of concern, as well as encouraging greater audience engagement due to their heightened emotional impact on viewers. Yet there are also risks associated with increased exposure, including heightened visitor pressure to environmentally sensitive areas or changes to consumer demand for endangered species. Conservationists can better understand and engage with the film industry by studying the impact of movies on audience awareness and behavior, identifying measurable impacts on conservation outcomes, and engaging directly with the movie industry, for example, in an advisory capacity. This improved understanding and engagement can harness the industrys potential to enhance the positive impacts of movies featuring species, sites, and issues of conservation concern and to mitigate any negative effects. A robust evidence base for evaluating and planning these engagements, and for informing related policy and management decisions, needs to be built.

Nonhuman citizens on trial: The ecological politics of a beaver reintroduction

Wildlife reintroductions can unsettle social and ecological norms, and are often controversial. In this paper, we examine the recent (re)introduction of Eurasian beavers to England, to analyse responses to an unauthorised release of a formerly resident species. Although the statutory response to the introduction was to attempt to reassert ecological and political order by recapturing the beavers, this action was strongly opposed by a diverse collective, united and made powerful by a common goal: to protect England’s ‘new’ nonhuman residents. We show how this clash of state resolve and public dissent produced an uneasy compromise in the form of a formal, licensed ‘beaver reintroduction trial’, in which the new beaver residents have been allowed to remain, but under surveillance. We propose that although the trial is unorthodox and risky, there is an opportunity for it to be treated as a ‘wild experiment’ through which a more open-ended, experimental approach to co-inhabiting with wildlife might be attempted.