Individual, sexual and temporal variation in the winter home range sizes of GPS-tagged Eurasian Curlews Numenius arquata

IF 0.7 4区生物学 Q3 ORNITHOLOGY

Bird Study Pub Date : 2022-04-03 DOI:10.1080/00063657.2022.2144129

L. Mander, I. Nicholson, R. Green, Steve G. Dodd, R. Forster, N. Burton

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引用次数: 1

Abstract

ABSTRACT Capsule: Eurasian Curlews Numenius arquata were faithful to foraging and roosting areas on their coastal wintering grounds, including a habitat creation site. Home range sizes were greater at night than during the day, and showed high inter-individual variability which was not related to sex. Aims: To examine factors affecting variation in the winter home range size of the largest European wader species: the near-threatened Eurasian Curlew Numenius arquata. Methods: We examined individual, sexual and temporal (day/night, seasonal and annual) variation in the size of the home ranges of 18 GPS tagged Curlews captured at two sites on the Humber Estuary, UK. Results: Home ranges were small (mean ± SD = 555.5 ± 557.9 ha) and varied slightly in size through the non-breeding season (September–March). We found some annual differences in home range size, and there was some evidence that home range size was greater at night compared to daytime. There was strong inter-individual variation in home range size, which was not related to the species’ sexual size dimorphism and thus potential differences in resource use. Conclusions: Our results highlight that wintering Curlews on the Humber Estuary maintain small home ranges which vary strongly between individuals. Knowledge of the home range size of wintering waders is vital to inform management responses to the potential impacts of environmental changes such as sea-level rise and improving the efficacy of compensatory habitats.

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gps标记欧亚鸻冬季栖地大小的个体、性别和时间变化

摘要胶囊：欧亚冰壶在其沿海越冬地（包括栖息地创建地）忠实于觅食和栖息区域。夜间的家庭范围比白天大，并且表现出与性别无关的高个体间变异性。目的：研究影响欧洲最大的涉禽物种——濒临灭绝的欧亚蝾螈（Curlew Numenius arquata）冬季栖息地大小变化的因素。方法：我们检查了在英国亨伯河口的两个地点捕获的18只GPS标记的柯鹬的家庭范围的个体、性别和时间（白天/晚上、季节和年度）变化。结果：家庭范围很小（平均 ± SD = 555.5 ± 557.9公顷），在非繁殖季节（9月至3月）大小略有变化。我们发现，家庭范围的大小每年都有一些差异，有证据表明，与白天相比，夜间的家庭范围更大。家域大小存在强烈的个体间差异，这与物种的性别大小二型性以及资源利用的潜在差异无关。结论：我们的研究结果强调，亨伯河口的越冬鹬保持着较小的栖息地范围，个体之间差异很大。了解越冬涉禽的栖息地大小对于管理层应对海平面上升等环境变化的潜在影响和提高补偿栖息地的效率至关重要。

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

Bird Study 生物-鸟类学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Bird Study publishes high quality papers relevant to the sphere of interest of the British Trust for Ornithology: broadly defined as field ornithology; especially when related to evidence-based bird conservation. Papers are especially welcome on: patterns of distribution and abundance, movements, habitat preferences, developing field census methods, ringing and other techniques for marking and tracking birds. Bird Study concentrates on birds that occur in the Western Palearctic. This includes research on their biology outside of the Western Palearctic, for example on wintering grounds in Africa. Bird Study also welcomes papers from any part of the world if they are of general interest to the broad areas of investigation outlined above. Bird Study publishes the following types of articles: -Original research papers of any length -Short original research papers (less than 2500 words in length) -Scientific reviews -Forum articles covering general ornithological issues, including non-scientific ones -Short feedback articles that make scientific criticisms of papers published recently in the Journal.