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首页> 外文期刊>Polar biology >Constraint in the midst of growth: decadal-scale Adelie penguin (Pygoscelis adeliae) population change at Scullin and Murray Monoliths diverges from widespread increases across East Antarctica
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Constraint in the midst of growth: decadal-scale Adelie penguin (Pygoscelis adeliae) population change at Scullin and Murray Monoliths diverges from widespread increases across East Antarctica

机译：增长中的制约因素：Scullin和Murray Monoliths的十年规模的阿德利企鹅（Pygoscelis adeliae）人口变化与整个南极东部的广泛增长有所不同

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摘要

Understanding spatio-temporal variation in the abundance of species' populations is an issue of central importance in ecology. Recent studies of decadal-scale change in Adelie penguin (Pygoscelisadeliae) populations around the Antarctic continent have led to insights into our understanding of the species' population dynamics and to exploration of the ecosystem processes driving them. However, gaps in knowledge of population change still exist for many populations, especially at breeding sites distant from research stations. In this study, we estimate population change for the large Adelie penguin populations at the seldom visited and data-poor Scullin and Murray Monoliths in East Antarctica by critically assessing historical population data and extending the historical time series of population data to the present day with a recent survey. Unlike Adelie penguin populations studied elsewhere in East Antarctica, we find the Monolith populations have remained stable or decreased slightly over the past 3-4 decades. The results indicate that spatially divergent processes are driving Adelie penguin population dynamics, and that these factors may not be sufficiently represented in current explanatory or predictive population models for this species. The methods employed here provide a viable means of undertaking regular population monitoring of highly visible seabird species such as the Adelie penguin in remote and ecologically important areas such as Scullin and Murray Monoliths in the future.
机译：了解物种种群数量的时空变化是生态学中至关重要的问题。最近对南极大陆周围的阿德利企鹅（Pygoscelisadeliae）种群的年代尺度变化的研究使我们对物种的种群动态有了更深入的了解，并探索了驱动它们的生态系统过程。但是，许多种群仍然存在种群变化知识方面的空白，尤其是在远离研究站的繁殖地点。在这项研究中，我们通过严格评估历史人口数据并将人口数据的历史时间序列扩展到今天，估计了南极东部很少访问且数据贫乏的Scullin和Murray Monoliths的大型Adelie企鹅种群的种群变化。最近的调查。与在南极东部其他地方研究过的阿德利企鹅种群不同，我们发现巨石种群在过去3-4年中一直保持稳定或略有下降。结果表明，空间上不同的过程正在驱动阿德利企鹅的种群动态，并且这些因素在当前对该物种的解释性或预测性种群模型中可能无法充分体现。此处使用的方法提供了一种可行的手段，可以在未来对偏远和具有生态重要性的地区（例如Scullin和Murray Monoliths）进行高度可见的海鸟物种（例如Adelie企鹅）的定期种群监视。

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