Guidelines for managers of protected areas are an important component of conservation policies, on a par with large-scale frameworks and vehicles for conservation funding. In line with the recent literature proposing evaluations of conservation actions or political strategies to improve them, here we use an innovative, hybrid methodology, based both on an interpretative approach anchored in social sciences and a quantitative literature review, to identify available frameworks for evaluating conservation guidelines. The main result of this analysis is that the relevant literature in conservation is sparse and heterogeneous, but a relevant encompassing framework is provided by the literature in decision sciences based on the policy analytics framework. This evaluation framework consists of three criteria: scientific credibility, operationality and legitimacy. We then implement a pilot application by evaluating guidelines currently used in France to support all of the actors involved in protected areas management. The study concludes that these guidelines are plagued by significant weaknesses that could be overcome by implementing relevant participatory processes.

Alien weed species rank among the most important threats to conservation of biodiversity, making understanding the extent to which protected natural areas are vulnerable to invasion by weeds pivotal in long-term maintenance and conservation of biodiversity. We investigated the potential geographic range of the invasive paleotropical weed, smooth crotalaria, in protected natural areas across Brazil. The ecological niche dimensions of smooth crotalaria in Africa (its putative original distribution) were modeled using a genetic algorithm. Models for the native range and their projections to South America showed good predictive ability when challenged with independent occurrence data. All Brazilian protected natural areas were predicted as highly vulnerable to invasion by this species. However, smooth crotalaria appears more likely to occur in open (savanna-like vegetation, such as cerrado and pantanal) and highly fragmented (Atlantic forest) areas than in extensive closed forests (Amazon). Management suggestions and research priorities are outlined based on these results.

In the last 20 years, both public and private expenditures on resource conservation and environmental protection have increased dramatically. However, there are numerous technical and political barriers to the efficient use of conservation funds. This paper discusses some of these barriers and approaches to overcoming them. It argues that ecosystem complexities such as threshold effects, ecosystem linkages, and spatial connections often mitigate against politically palatable criteria for resource allocation. Ignoring these complexities is likely to result in substantial efficiency losses. While challenges are daunting for the efficient management of conservation investments, payoff is potentially high for the use of sciences.

The attitudes of neighbouring communities towards protected areas are increasingly being considered in the establishment and management of national parks. In South Africa, more inclusive policies have been introduced which seek to involve neighbouring communities in policy formulation and management of Kruger National Park (KNP). This paper examines the attitudes of 38 communities towards KNP along its western border. A random survey of 240 households was conducted to assess attitudes towards the Park, and what factors might influence them. Attitudes were measured by responses to 12 related questions, which were transformed to construct an attitude index. Attitudes are more varied than previously reported. Notwithstanding KNP outreach programmes, many respondents had had no interaction with KNP, 72.9% had never been in the Park, and only 32.1% claimed they knew of KNP's activities. Having a household member employed by KNP, age and de jure Traditional Authority affiliation influenced more positive attitudes toward KNP. Negative attitudes were primarily linked with problems associated with damage-causing animals, including inadequate maintenance of the KNP border fence, poor animal control outside KNP and lack of compensation for affected farmers. These findings on relationships between KNP and its neighbours are relevant for many protected areas in similar contexts elsewhere.