This document should be cited as: BirdLife International (2010). Marine Important Bird Areas toolkit: standardised techniques for identifying priority sites for the conservation of seabirds at sea. BirdLife International, Cambridge UK. Version 1.2: February 2011 Editor: Ben Lascelles, Global Marine IBA Officer. Email:
[email protected] Contents Executive Summary 1. Introduction 2. Important Bird Areas (IBAs) 2.1 Concept and aim 2.2 IBA criteria 3. Background to marine IBAs 4. Marine IBA identification protocol 5. Identifying priority species for marine IBA analysis 6. Data Sources 6.1 Identification of breeding sites and seaward extensions 6.2 BirdLife International Seabird Foraging Range Database 6.3 Expert opinion 6.4 Tracking data 6.4.1 Best practice analysis 6.5 At-sea survey data 6.5.1 Vessel-based surveys 6.5.2 Aerial surveys 6.5.3 Assessment of at-sea survey data for IBAs 6.6 Habitat modelling 6.6.1 Inputs to models 6.6.2 Assessment of habitat models for IBAs 6.6 Other data sources 6.6.1 Bycatch and counts from fishing vessels 6.6.2 Land-based observations 6.6.3 Radar 6.6.4 Remote sensing 7. Integrating data layers to identify candidate marine IBAs 8. Application of the IBA criteria in the marine environment 8.1 Assessing regular use 8.2 IBA thresholds 8.2.1 Confirmation from data layers 8.2.2 Extrapolation 8.2.3 Turnover 8.3 Assessing thresholds using tracking data 9. Defining boundaries 10. Description, submission and confirmation of IBAs References Marine Important Bird Areas toolkit: Standardised techniques for identifying priority sites for the conservation of seabirds at sea Executive Summary The Important Bird Area (IBA) Programme of BirdLife International has been used to identify priority sites for conservation for over 30 years.