Abstract

AbstractSystematic conservation planning and Key Biodiversity Areas (KBAs) are the two most widely used approaches for identifying important sites for biodiversity. However, there is limited advice for conservation policy makers and practitioners on when and how they should be combined. Here we provide such guidance, using insights from the recently developed Global Standard for the Identification of KBAs and the language of decision science to review and clarify their similarities and differences. We argue the two approaches are broadly similar, with both setting transparent environmental objectives and specifying actions. There is however greater contrast in the data used and actions involved, as the KBA approach uses biodiversity data alone and identifies sites for monitoring and vigilance actions at a minimum, whereas systematic conservation planning combines biodiversity and implementation‐relevant data to guide management actions. This difference means there is much scope for combining approaches, so conservation planners should use KBA data in their analyses, setting context‐specific targets for each KBA type, and planners and donors should use systematic conservation planning techniques when prioritizing between KBAs for management action. In doing so, they will benefit conservation policy, practice and research by building on the collaborations formed through the KBA Standard's development.

Highlights

  • Site-based conservation is vital for stemming biodiversity loss, but many important species, ecosystems and ecological processes are missing from current conservation area systems (Butchart et al, 2015; Klein et al, 2015)

  • Two approaches widely used to inform the implementation of Aichi Target 11 are based on the systematic conservation planning and Key Biodiversity Area (KBA) approaches (IUCN, 2016; Margules & Pressey, 2000)

  • “contribute significantly to the global persistence of biodiversity” based on a set of globally standardized criteria and quantitative thresholds (IUCN, 2016). It builds on a methodology originally developed for identifying Important Bird and Biodiversity Areas (IBAs) (BirdLife International, 2014; Donald et al, 2018) that was adapted to identify sites of importance for a range of different taxa (Edgar et al, 2008; Eken et al, 2004; Holland, Darwall, & Smith, 2012; Langhammer et al, 2007), with over 15,000 sites identified to date (BirdLife International, 2017)

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Summary

INTRODUCTION

Site-based conservation is vital for stemming biodiversity loss, but many important species, ecosystems and ecological processes are missing from current conservation area systems (Butchart et al, 2015; Klein et al, 2015). The two approaches were developed and applied by different communities, but the two groups began working closely together in 2012 as part of the process to develop a new global KBA Standard (IUCN, 2016) This collaboration involved comparing the systematic conservation planning and KBA approaches, addressing previous critiques of the KBA methodology (Knight et al, 2007) and investigating the scope for unifying the theory and practice that underpins them. Systematic conservation planning ideally includes implementation-relevant data such as threats and costs (Moilanen et al, 2009), KBAs are identified using biodiversity data alone and so are not necessarily priorities for formal protection or any other particular form of conservation management (Maxwell et al, 2018) Despite these differences, recent research from a global study using bird distribution data found that many terrestrial IBAs were identified as important by the complementarity-based algorithms used in systematic conservation planning (Di Marco et al, 2016). We describe how the two approaches can complement and strengthen each other, and argue they should be used in tandem in future to identify, prioritize, and delineate new areas for conservation actions

USING DECISION SCIENCE TO FRAME THE TWO APPROACHES
Systematic conservation planning
The KBA approach
Similarities and differences with the two approaches
B1: Individual geographically restricted species B2
D1: Demographic aggregations D2: Ecological refugia D3
POTENTIAL LINKS BETWEEN SYSTEMATIC CONSERVATION PLANNING AND KBAS
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