With parks and protected areas insufficient to sustain global biodiversity, the role of private land in biodiversity conservation is becoming increasingly significant. This paper reviews global voluntary and involuntary strategies for private land conservation. Involuntary strategies can achieve effective conservation outcomes, but often lack social acceptability. In contrast, voluntary strategies enjoy greater social acceptance but may not achieve sufficient uptake to have meaningful conservation objectives. Based on the review, we propose a classification system for private land conservation as a complement to the International Union for Conservation of Nature's (IUCN's) classification of global protected areas. The classification system provides a framework for identifying and describing conservation strategies on private land on the dimension of tenure and security. It also identifies opportunities and vulnerabilities in achieving conservation on private land while emphasising the need for systematic data collection similar to IUCN's efforts for protected areas.

Contradictions between community practices and governance in resource use within forest reserves can only be resolved using an inclusive approach for effective management and sustainable use of natural resource. Using a case study in Peninsular Malaysia, we argue that effective natural resource management requires the authorities to consider indigenous participation and the incorporation of indigenous knowledge. This helps to improve the management of protected areas. Indigenous knowledge of natural resources and landscape represents the close relationship between indigenous communities and their natural surroundings. Therefore, it is crucial to acknowledge them as the main stakeholders in managing protected areas. Experts and policymakers need to adopt a holistic approach by recognising the existence of multi-stakeholders in protected areas and addressing their diverse needs. When framing appropriate policies and management plans for protected areas, indigenous knowledge and the pressures which shape the way they utilise natural resources should be acknowledged and considered. Here we echo the core concepts of the participatory approach by recognising indigenous claims to rights, empowering them and listening to their needs for an inclusive approach to the management of protected areas.

Biodiversity conservation is gradually shifting its dependency on public protected areas to take a more holistic ecosystem and landscape approach that includes private lands in addition to public lands. However, effective practice of biodiversity conservation on private land also depends on landowners' attitude and their willingness to participate and cooperate. This study focuses on Poland where conservation on private land is a relatively new concept but it is slowly gaining recognition, especially after its accession into the European Union. It investigates and classifies the diverse attitudes among stakeholder groups in Poland toward biodiversity conservation on private land that are part of protected areas. Four primary stakeholder groups were considered: conservation and park authorities, local administrative officials, local conservation based NGOs and private landowners. The study was conducted across three sites that represented three different forms of protected areas in Poland: a national park, a landscape park and a Natura 2000 site. Q methodology, a research method from psychology and other social sciences, was used to classify human subjectivity in stakeholders' attitude in a more systematic manner. The analysis yielded three predominant factors which highlighted the diversity in attitudes among the stakeholder groups based on their knowledge, concerns and experience in the subject. Additionally, it underlined the common recognition among all stakeholder groups for better policy support, stronger collaboration among stakeholder and more financial or compensatory support for landowners to make private land conservation more feasible. Understanding the differences in attitudes will help bridge the gap between conservation priority and conservation opportunity-a current challenge in the field of biodiversity conservation.Communicated by Stephen Garnett.

Private land is gradually emerging as a global biodiversity conservation strategy for its potential to complement the existing protected area model in its attempt to halt the global biodiversity loss. However, involving private lands in conserving a public good face continuous challenges. While examining landowners' motivations for conserving their land is imperative to its success, it is equally important to assess how other stakeholder groups perceive private land conservation. In order to capture the diversity and contrasts in implementing private land conservation, this research focuses on investigating the managerial perspectives on the status of private land conservation in two countries: USA and Poland. The paper presents the results of twenty five in-depth interviews that were conducted in the two countries. The US context, with a longer history and experience, captured complex interactions and factors that influence private land conservation, including role of conservation policies, civic sector organizations, stakeholder collaboration, technical and financial support, and nonmonetary motivations of landowners. The Polish context however, was limited to the regulatory model and as such did not differentiate private land conservation from traditional protected areas. Additionally, the lack of voluntary initiatives along with adequate policies and lack of awareness on private land conservation at a national and local level contributed to limited scope and understanding on the subject. The two case studies highlight the context dependency of such a strategy and bring to focus some of the factors that should be addressed while adopting conservation on private land as a biodiversity conservation strategy.

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