An assessment of recent population trends of flesh-footed shearwaters (Puffinus carneipes) breeding in New Zealand

Birds New Zealand

Jamieson, SE¹ 

关键词: burrow;    nesting density;    petrel;    seabird conservation;   

DOI  :  

学科分类：动物科学

来源: Ornithological Society of New Zealand Inc.

【 摘 要 】

Flesh-footed shearwaters (Puffinus carneipes) are considered to be one of New Zealand’s seabird species that is most heavily impacted by both commercial and recreational fisheries, yet they have an IUCN ranking of “Least Concern”. To resolve this contradiction we conducted surveys on 3 large breeding colonies and compared our results to historical data. We found that the burrow density on the most northerly island (Lady Alice Island/Mauimua) has increased since the last set of surveys; however the density of flesh-footed shearwaters nests has remained stable. At the largest colony we surveyed (Ohinau Island), the density of burrows has remained stable, while the density of nests has declined. At New Zealand’s most southerly colony (Titi Island), both burrow and nest densities have remained stable. Our results suggest that the status of flesh-footed shearwaters populations in New Zealand is variable with 2 populations that are stable and 1 that is declining. Nevertheless, due to the short time period between our surveys and the historical data, repeated surveys in the future are needed to determine if further declines in the largest colony warrant a reassessment of the status of this species.

【 授权许可】

Unknown