Population Status of Sympatrically Breeding Skuas (Catharacta spp.) at Admiralty Bay, King George Island, Antarctica: A Case Report for 2020-2024.

IF 3.6 3区生物学 Q1 BIOLOGY

Biology-Basel Pub Date : 2025-03-17 DOI:10.3390/biology14030305

Katarzyna Komarowska, Katarzyna Fudala, Michał Dziembowski, Alexander Hagge, Robert Józef Bialik

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引用次数: 0

Abstract

The present study sets out to examine the status of sympatric populations of south polar (Catharacta maccormicki) (SPSs) and brown skuas (Catharacta antarctica) (BSs) at two sites on King George Island, Antarctica. The study sites were designated as Important Bird and Biodiversity Areas (IBAs) and were monitored for three (for Point Hennequin (PH)) and four (for West Admiralty Bay (WAB)) consecutive breeding seasons, concluding with the 2023/24 season. The most recently reported data from these areas are from the 2004/05 season, and the data presented herein allow both areas to be assessed in the context of their IBA and Antarctic Specially Protected Area values. The mean number of total pairs for the investigated seasons for WAB was 67 ± 7, while for PH, it was 157 ± 18. The number of pairs of SPSs at PH and WAB justifies the positive evaluation of the areas as IBAs based on global designation criterion A4 proposed jointly by BirdLife International and the Scientific Committee on Antarctic Research (SCAR). PH is of particular interest, as it has been determined that at least 2.3% of the global population of SPSs, estimated by BirdLife International to be between 6000 and 15,000 adult individuals, breeds at this site. The expansion of both IBA boundaries is also recommended based on this study.

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南极乔治王岛金钟湾同域繁殖贼鸥种群状况：2020-2024年病例报告。

本研究在南极洲乔治王岛的两个地点调查了南极（Catharacta maccormicki）和棕色贼鸥（Catharacta antarctica）的同域种群状况。研究地点被指定为重要鸟类和生物多样性区（），并连续监测了三个（Point Hennequin (PH)）和四个（West Admiralty Bay (WAB)）的繁殖季节，截至2023/24年。这些地区最近报告的数据来自2004/05季节，本文提供的数据允许在其IBA和南极特别保护区价值的背景下评估这两个地区。调查季节WAB的平均总对数为67±7对，PH的平均总对数为157±18对。根据国际鸟盟和南极研究科学委员会（SCAR）联合提出的全球命名标准A4， PH和WAB的sp对数量证明了对这些地区的积极评价。PH值尤其令人感兴趣，因为据国际鸟盟估计，全球至少有2.3%的幼鸟在这里繁殖，成年个体在6000到15000只之间。在此基础上，提出了扩展两个IBA边界的建议。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biology-Basel Biological Science-Biological Science

CiteScore

5.70

自引率

4.80%

发文量

1618

审稿时长

11 weeks

期刊介绍： Biology (ISSN 2079-7737) is an international, peer-reviewed, quick-refereeing open access journal of Biological Science published by MDPI online. It publishes reviews, research papers and communications in all areas of biology and at the interface of related disciplines. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material.