Nesting phenology of migratory songbirds in an eastern Canadian boreal forest, 1996–2020

IF 1.4 4区环境科学与生态学 Q3 BIODIVERSITY CONSERVATION

Avian Conservation and Ecology Pub Date : 2024-01-31 DOI:10.5751/ace-02565-190102

Sara Boukherroub, André Desrochers, Junior A. Tremblay

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引用次数: 0

Abstract

The migration phenology of many bird species has changed over the past few decades, but whether such changes lead to changes in the nesting phenology remains little known. Studying bird nesting in the boreal forest comes with challenges because of the large size of this biome. We evaluated songbird nesting phenology for the past 25 yrs in a boreal forest in eastern Canada, Forêt Montmorency. We used the observation of food transport in adults as an index of parental status, considering the imperfect detection of this status through hierarchical models of site occupation. We estimated annual phenology as the Julian date of the inflection point of the logistic fit of proportion of sites with parental activity as a function of Julian date. Contrary to expectations related to the advance of spring migration in North America, models did not show an advancement in the nesting season. Models showed that passerines can move their nesting date back or forward by 1 to 9 d. Models suggested that short-distance migrants delayed their nesting date by 2 wks against 1 mo for long-distance migrants. These results show the capacity of songbirds to adjust their nesting time and remind us of the value of regional studies when we are interested in reproductive phenology.

The post Nesting phenology of migratory songbirds in an eastern Canadian boreal forest, 1996–2020 first appeared on Avian Conservation and Ecology.

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1996-2020 年加拿大东部北方森林中候鸟的筑巢物候期

在过去的几十年中，许多鸟类的迁徙物候发生了变化，但这些变化是否会导致鸟类筑巢物候的变化仍然鲜为人知。研究北方森林鸟类筑巢是一项挑战，因为该生物群落面积巨大。我们评估了加拿大东部北方森林（Forêt Montmorency）过去 25 年的鸣禽筑巢物候。我们将观察成鸟的食物运输情况作为亲鸟状态的指数，并考虑到通过场地占用的分层模型对这种状态的检测并不完善。我们将有亲鸟活动的地点比例与朱利叶日函数的对数拟合拐点的朱利叶日作为年物候期的估计值。与北美洲春季迁徙提前的预期相反，模型并未显示筑巢季节提前。模型表明，短程迁徙者的筑巢日期推迟了2周，而长程迁徙者的筑巢日期推迟了1个月。这些结果显示了鸣禽调整筑巢时间的能力，并提醒我们在对繁殖物候学感兴趣时区域研究的价值。

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

Avian Conservation and Ecology BIODIVERSITY CONSERVATION-ORNITHOLOGY

CiteScore

2.20

自引率

7.10%

发文量

审稿时长

>12 weeks

期刊介绍： Avian Conservation and Ecology is an open-access, fully electronic scientific journal, sponsored by the Society of Canadian Ornithologists and Birds Canada. We publish papers that are scientifically rigorous and relevant to the bird conservation community in a cost-effective electronic approach that makes them freely available to scientists and the public in real-time. ACE is a fully indexed ISSN journal that welcomes contributions from scientists all over the world. While the name of the journal implies a publication niche of conservation AND ecology, we think the theme of conservation THROUGH ecology provides a better sense of our purpose. As such, we are particularly interested in contributions that use a scientifically sound and rigorous approach to the achievement of avian conservation as revealed through insights into ecological principles and processes. Papers are expected to fall along a continuum of pure conservation and management at one end to more pure ecology at the other but our emphasis will be on those contributions with direct relevance to conservation objectives.