Update on the abundance and distribution of Macaroni Penguins (Eudyptes chrysolophus) in the Antarctic Peninsula region

IF 1.5 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION
Madeline Hallet, Heather J. Lynch
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引用次数: 0

Abstract

Several studies have examined the potential impacts of climate change on the abundance and distribution of Antarctic penguin species, particularly in the genus Pygoscelis. However, less attention has been given to traditionally sub-Antarctic penguin species. The Macaroni Penguin (Eudyptes chrysolophus) is one such sub-Antarctic species whose presence in Antarctica has historically been restricted to colonies on the South Shetland Islands and adjacent islands, but their status in the region has not been updated in decades. We compiled census data on all known Macaroni Penguin breeding colonies in the Antarctic Peninsula region in order to estimate the total Antarctic population. We estimate a population of 8053 breeding pairs for the region, which represents an approximately 10.7% increase since the last regional census in 1993. We identify local population changes at different colonies in comparison to historical census data. We also identify vagrant sightings in the region, as they may reflect prospecting of new breeding habitat, especially as ice-free areas continue to expand due to climate change. Our assessment identifies the South Shetland Islands and South Orkney Islands as notable data gaps.

Abstract Image

南极半岛地区通心粉企鹅(Eudyptes chrysolophus)数量和分布的最新情况
有几项研究探讨了气候变化对南极企鹅物种,特别是侏儒企鹅属物种的数量和分布的潜在影响。然而,人们对传统的亚南极企鹅物种关注较少。通心粉企鹅(Eudyptes chrysolophus)就是这样一种亚南极物种,它们在南极洲的存在历来仅限于南设得兰群岛和邻近岛屿上的群落,但几十年来它们在该地区的地位一直没有得到更新。我们汇编了南极半岛地区所有已知马卡龙企鹅繁殖地的普查数据,以估算南极地区的总种群数量。我们估计该地区的繁殖数量为 8053 对,比 1993 年上一次地区普查增加了约 10.7%。与历史普查数据相比,我们确定了不同繁殖地的局部种群数量变化。我们还发现了该地区的流浪鸟,因为它们可能反映了对新繁殖栖息地的探索,特别是随着气候变化导致无冰区域的不断扩大。我们在评估中发现南设得兰群岛和南奥克尼群岛存在明显的数据缺口。
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来源期刊
Polar Biology
Polar Biology 生物-生态学
CiteScore
3.60
自引率
11.80%
发文量
116
审稿时长
3-8 weeks
期刊介绍: Polar Biology publishes Original Papers, Reviews, and Short Notes and is the focal point for biologists working in polar regions. It is also of interest to scientists working in biology in general, ecology and physiology, as well as in oceanography and climatology related to polar life. Polar Biology presents results of studies in plants, animals, and micro-organisms of marine, limnic and terrestrial habitats in polar and subpolar regions of both hemispheres. Taxonomy/ Biogeography Life History Spatio-temporal Patterns in Abundance and Diversity Ecological Interactions Trophic Ecology Ecophysiology/ Biochemistry of Adaptation Biogeochemical Pathways and Cycles Ecological Models Human Impact/ Climate Change/ Conservation
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