Tuesday, October 26, 2021

Measuring conservation status in New Zealand birds: re-evaluating banded dotterel and black-fronted tern as case studies

TitleMeasuring conservation status in New Zealand birds: re-evaluating banded dotterel and black-fronted tern as case studies
Publication TypeJournal Article
Year of Publication2021
AuthorsCraig, JL, Mitchell, ND
JournalNotornis
Volume68
Issue2
Pagination147-160
Type of ArticleFull article
KeywordsBanded Dotterel, black-fronted terns, Charadrius bicinctus, Chlidonias albostriatus, generation time, population size, population trends, threat classification
Abstract

 

The New Zealand Threat Classification System is used to prioritise and evaluate conservation programs, as an advocacy tool for biodiversity and as a guide to risk when assessing the severity of effects of development. A lack of transparency and adherence to scientific conventions when compiling the listings for birds led to previous criticism (Williams 2009). Two recent papers provide sufficient information to independently assess the threat status ranking of two endemic birds. Both papers provide detailed information on multiple sites and assess the influence of different threats. Both also provide an estimate of population size and generation time as required for assigning a Threat Classification. The authors conclude with clear recommendations on appropriate New Zealand and IUCN threat status ranking in both papers. We consider that the authors have failed to consistently apply the criteria for assessment in the Threat Classification Manual (Townsend et al. 2008) and IUCN Red List Guidelines (IUCN 2019). We re-evaluate the recommended threat status in light of adherence to the criteria, the data used and the analysis methodology selected. We recommend greater transparency, use of additional methodology and adherence to the guidelines to improve consistency and reliability of threat status classification.

 

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