Population Status and Trends. (i) Supported the review by PaCSWG of information concerning the global threat status (IUCN Red List Category of Extinction Risk) for all ACAP species to ensure consistency and strict adherence to the IUCN Categories and Criteria (published 2012), and to the Guidelines for using the IUCN Categories and Criteria (published 2017).
(ii) Endorsed PaCSWG conveying the outcomes of this review to BirdLife International with recommendations for revisions, if necessary, to the global threat status of ACAP species (IUCN Red List Category of Extinction Risk).
Population Status and Trends. 6
6.1. Global population status - update of IUCN Red List for ACAP species 6
6.2. Current population status and trends of ACAP Species 6 6.3. Data updates and gap analysis 14
Population Status and Trends. 6.1. Global population status - update of IUCN Red List for ACAP species
Population Status and Trends. 12.5.1 The WGs discussed BSWG4/STWG6 Doc 5 by BirdLife International, which identifies candidate BirdLife Important Bird Areas (IBAs) in the Atlantic sector of Antarctica (including the South Shetland and South Orkney Islands). The only ACAP species breeding in this area is the Southern Giant Petrel Macronectes giganteus, populations of which would only trigger IBA criteria if they exceed 1% of the global population (c. 485 pairs). However some IBAs triggered by other seabird species also contain breeding giant petrels. The IBA analysis, taking account of different levels of certainty over population data and also examining sensitivity to scale-dependent effects, identifies some 40 “confirmed” IBAs and 60 “potential” IBAs. Of the “confirmed” IBAs, Southern Giant Petrels breed at two, Avian Island (Antarctic Peninsula; 197 pairs) and Penguin Island (South Shetland Islands; 634 pairs). Of the “potential” IBAs, Southern Giant Petrels breed at ten. Overall, the IBAs identified include all six of the important breeding sites for ACAP Species holding >1% of the global population.
12.5.2 The Committee noted that no changes had occurred to the threat status of ACAP species in the 2011 revision of the IUCN Red List, and thus since the previous report on this topic to AC5 (AC6 Doc 30). The WG notes that the next revision of the IUCN Red List, in 2012, would be the major quadrennial review of all species. The Committee also welcomed the intent of BirdLife International who indicated their wish to work closely with the ACAP Secretariat to undertake a major re-evaluation of the status of ACAP species in 2012, based on the population data available in the ACAP database. In order to report the global trends of ACAP populations to the MoP in 2012, the WGs shall apply the algorithms used by BirdLife International to determine global status thereby ensuring consistency in analyses and advice.
12.5.3 The most recent information on population status and trends that has been made available to ACAP by the Parties was summarised for consideration by the Committee. It was noted that these summaries reflect only data that has been submitted to the database. The rigour therefore of this information is reliant on timely and comprehensive provision of relevant information by all Parties. At present, there are 248 islands where populations of ACAP species breed. The 29 ACAP species that are listed currently comprise 2.95 million pairs each year, breeding at 141 “island groups” which i...
Population Status and Trends
