Impacts of invasive honeysuckle removal on forest-breeding birds in western Central Hardwoods forests

IF 3.7 2区农林科学 Q1 FORESTRY

Forest Ecology and Management Pub Date : 2025-08-29 DOI:10.1016/j.foreco.2025.123093

Katrina M. Fernald , Miranda T. Curzon , Tyler M. Harms

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引用次数: 0

Abstract

Amur honeysuckle (Lonicera maackii), a non-native, invasive shrub, has established in woodlands across the eastern United States, altering understory dynamics and forest structure. Land managers have recently employed aerial treatment with glyphosate to remove honeysuckle, a technique that can be used to treat large areas at low cost with high effectiveness. Prior research has produced conflicting results on how invasive honeysuckle impacts forest birds, with most concluding that the effects depend on the foraging or nesting guild of the species. This study quantified the response of forest vegetation and the breeding bird community 4–5 years after the rapid removal of honeysuckle using aerial glyphosate treatments.

We sampled vegetation and the breeding bird community at 65 randomly distributed sampling points across three properties, totaling 216 ha in Central Hardwoods oak-hickory forest in Iowa, USA.

Unsprayed stands contained significantly more live honeysuckle (26,765 stems/ha) than sprayed stands (7714 stems/ha, F = 9.39, p = 0.003) and averaged 7.7 % less cover of understory plants (F = 5.62, p = 0.021). Density of ground-nesting and aerial-foraging birds was greater in unsprayed stands than in sprayed stands. Non-metric multi-dimensional scaling (NMDS) results suggested that densities of the shrub-foraging group, tree-foraging group, Indigo Bunting (Passerina cyanea), and Red-eyed Vireo (Vireo olivaceus) were all more closely associated with sprayed conditions.

Overall, these results suggest that while honeysuckle removal is clearly beneficial to the native plant community, it may decrease the abundance of some understory-associated bird species, at least in the short term. Therefore, we recommend pairing honeysuckle removal with native shrub restoration.

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华中西部阔叶林金银花入侵清除对森林繁殖鸟类的影响

金银花（Lonicera maackii）是一种非本地的入侵灌木，已在美国东部的林地中建立，改变了林下植被动态和森林结构。土地管理者最近采用草甘膦空中处理去除金银花，这种技术可以低成本高效地大面积处理。先前的研究对入侵金银花如何影响森林鸟类产生了相互矛盾的结果，大多数研究得出的结论是，这种影响取决于物种的觅食或筑巢行为。本研究量化了空中草甘膦快速去除金银花后4-5年森林植被和繁殖鸟类群落的反应。在美国爱荷华州中部硬木橡树-山核桃林中，随机分布的65个采样点共216 ha的植被和繁殖鸟类群落进行了采样。未喷淋林分金银花活枝数（26,765茎/ha）显著高于喷淋林分（7714茎/ha， F = 9.39, p = 0.003），林下植物盖度平均减少7.7 % （F = 5.62, p = 0.021）。地面筑巢和空中觅食的鸟类密度在未喷洒林分大于喷洒林分。非度量多维尺度（NMDS）结果表明，灌木-觅食组、树木-觅食组、青雀鸟（Passerina cyanea）和红眼Vireo olivaceus的密度与喷施条件的关系更为密切。总的来说，这些结果表明，尽管金银花的移除显然对本地植物群落有益，但至少在短期内，它可能会减少一些与林下植物相关的鸟类物种的丰度。因此，我们建议将金银花去除与原生灌木恢复配对。

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

Forest Ecology and Management 农林科学-林学

CiteScore

7.50

自引率

10.80%

发文量

665

审稿时长

39 days

期刊介绍： Forest Ecology and Management publishes scientific articles linking forest ecology with forest management, focusing on the application of biological, ecological and social knowledge to the management and conservation of plantations and natural forests. The scope of the journal includes all forest ecosystems of the world. A peer-review process ensures the quality and international interest of the manuscripts accepted for publication. The journal encourages communication between scientists in disparate fields who share a common interest in ecology and forest management, bridging the gap between research workers and forest managers. We encourage submission of papers that will have the strongest interest and value to the Journal''s international readership. Some key features of papers with strong interest include: 1. Clear connections between the ecology and management of forests; 2. Novel ideas or approaches to important challenges in forest ecology and management; 3. Studies that address a population of interest beyond the scale of single research sites, Three key points in the design of forest experiments, Forest Ecology and Management 255 (2008) 2022-2023); 4. Review Articles on timely, important topics. Authors are welcome to contact one of the editors to discuss the suitability of a potential review manuscript. The Journal encourages proposals for special issues examining important areas of forest ecology and management. Potential guest editors should contact any of the Editors to begin discussions about topics, potential papers, and other details.