Bias-corrected natal dispersal estimates fill information gaps for White-headed Woodpecker conservation

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

Avian Conservation and Ecology Pub Date : 2024-07-31 DOI:10.5751/ace-02684-190204

Teresa J. Lorenz, Andrew N. Stillman, Jeffrey M. Kozma, Philip C. Fischer

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引用次数: 0

Abstract

Although the White-headed Woodpecker (Dryobates albolarvatus) has been used as a management indicator species to guide forest management in the western U.S., basic information on the dispersal behavior of this species is currently unavailable. However, understanding dispersal can provide key information for management and conservation by revealing the mechanisms by which species colonize new areas and restored habitat. To address this information gap, we tracked the dispersal of juvenile White-headed Woodpeckers from their natal areas to their first spring home range in 2014–2018 and estimated dispersal distances using an interval-censored bias correction method with field observations and aerial telemetry surveys. We also compared habitat features between dispersal locations and spring home ranges. The median bias-corrected dispersal distance was 22.2 km in the fall (95% confidence interval [CI] = 16.4, 29.1 km), with 90% of woodpeckers dispersing >4.8 km (95% CI = 2.7, 8.3 km). The following spring, the median bias-corrected natal dispersal distance was 24.6 km (95% CI = 17.9, 32.3 km), while 10 individuals with full detection histories dispersed a median of 7.7 km to their first breeding locations (range 1.2–23.0 km). Our natal dispersal estimates for juvenile White-headed Woodpeckers were longer than those for most other woodpecker species studied to date. In addition, we found that woodpeckers settled in mid-elevation areas with greater variation in canopy cover compared to dispersal locations. There was no difference in ponderosa pine (Pinus ponderosa) basal area between dispersal tracks and spring home ranges. White-headed Woodpeckers are a species of conservation concern due to habitat loss in western North America, and active management in Washington state seeks to restore overstocked ponderosa pine forests to pre-settlement tree densities which could benefit this woodpecker. Our results inform conservation and forest management efforts by suggesting that dispersing juveniles have the capacity to travel long distances to colonize restored forests.

The post Bias-corrected natal dispersal estimates fill information gaps for White-headed Woodpecker conservation first appeared on Avian Conservation and Ecology.

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经偏差校正的出生地扩散估计值填补了白头啄木鸟保护方面的信息空白

尽管白头啄木鸟（Dryobates albolarvatus）已被用作指导美国西部森林管理的管理指标物种，但目前还没有关于该物种扩散行为的基本信息。然而，通过揭示物种在新区域和恢复栖息地定殖的机制，了解其扩散行为可为管理和保护提供关键信息。为了填补这一信息空白，我们跟踪了2014-2018年白头啄木鸟幼鸟从出生地到其第一个春季家园范围的扩散情况，并通过野外观察和航空遥测调查，采用间隔删失偏差校正法估算了扩散距离。我们还比较了散布地点和春季家园范围之间的栖息地特征。秋季的偏差校正扩散距离中位数为 22.2 km（95% 置信区间 [CI] = 16.4, 29.1 km），90% 的啄木鸟扩散距离大于 4.8 km（95% 置信区间 = 2.7, 8.3 km）。第二年春天，经偏差校正的产地扩散距离中位数为24.6 km (95% CI = 17.9, 32.3 km)，而10只具有完整探测历史的啄木鸟扩散到其第一个繁殖地的中位数为7.7 km (范围为1.2-23.0 km)。我们对白头啄木鸟幼鸟的产地扩散估计值比迄今为止研究的大多数其他啄木鸟物种都要长。此外，我们还发现，白头啄木鸟在树冠覆盖度变化较大的中高海拔地区定居的时间比散布地点要长。散布地点和春季家园之间的松柏（Pinus ponderosa）基部面积没有差异。白头啄木鸟是北美西部因栖息地丧失而受到保护关注的一个物种，华盛顿州的积极管理旨在将蓄积过多的松柏林恢复到定居前的树木密度，这将有利于这种啄木鸟。我们的研究结果表明，扩散的幼鸟有能力长途跋涉到恢复的森林中定居，从而为保护和森林管理工作提供了信息。

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.