The Emerging Conflict of Common Ravens Roosting on Electric Power Transmission Line Towers in Montana, USA

IF 0.9 4区环境科学与生态学 Q4 BIODIVERSITY CONSERVATION Human–Wildlife Interactions Pub Date : 2020-01-01 DOI:10.26077/8E0E-6B4B

M. Restani, James S. Lueck

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引用次数: 8

Abstract

: Bird interactions with electric power lines can cause faults (e.g., disruption of electrical service). Faults on 500kV transmission lines in Montana, USA, which are integral to the Northwest USA power grid, became concerning during winter 2016–2017. In 2017 we found insulators contaminated with bird droppings and discovered a large nocturnal roost of common ravens ( Corvus corax ). To assess the potential magnitude of the impact of raven roosts on electric power transmission, we summarized fault data obtained from the Energy Management System and raven abundance data obtained from the Christmas Bird Count in central Montana from 2005 to 2020. We also conducted counts at 7 roosts in the study area in winter 2019–2020. We detected a positive relationship between the number of faults reported and raven abundance. The 3 largest roosts we surveyed peaked at 1,000–1,500 ravens on single evenings. The number of faults reported in winter 2019–2020 decreased after use of silicon-coated insulators, perch deterrents, and periodic washing of insulators. Increased raven populations throughout their range may cause similar conflicts for other electric utilities. Long-term management of ravens will need to integrate approaches at both local and landscape scales.

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美国蒙大拿州输电铁塔上栖息的普通乌鸦的新冲突

鸟与电线的相互作用会引起故障(例如，电力服务中断)。美国蒙大拿州500kV输电线路的故障是美国西北部电网的组成部分，在2016-2017年冬季引起了人们的关注。2017年，我们发现了被鸟粪污染的绝缘体，并发现了一个大型的普通乌鸦(Corvus corax)夜间栖息地。为了评估乌鸦栖息地对电力传输的潜在影响程度，我们总结了2005年至2020年蒙大拿州中部地区能源管理系统获得的故障数据和圣诞节鸟类统计获得的乌鸦丰度数据。2019-2020年冬季，我们还对研究区7个栖息地进行了计数。我们发现在报告的故障数量和乌鸦丰度之间存在正相关关系。我们调查的3个最大的巢穴在一个晚上达到了1000 - 1500只乌鸦的峰值。在使用了涂硅绝缘子、防波剂和定期清洗绝缘子后，2019-2020年冬季报告的故障数量有所减少。渡鸦数量的增加可能会对其他电力设施造成类似的冲突。乌鸦的长期管理将需要在地方和景观尺度上整合各种方法。

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

Human–Wildlife Interactions Environmental Science-Nature and Landscape Conservation

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

11 weeks

期刊介绍： Human–Wildlife Interactions (HWI) serves the professional needs of the wildlife biologist and manager in the arena of human–wildlife conflicts/interactions, wildlife damage management, and contemporary wildlife management. The intent of HWI is to publish original contributions on all aspects of contemporary wildlife management and human–wildlife interactions with an emphasis on scientific research and management case studies that identify and report innovative conservation strategies, technologies, tools, and partnerships that can enhance human–wildlife interactions by mitigating human–wildlife conflicts through direct and indirect management of wildlife and increased stakeholder engagement. Our intent is to promote a dialogue among wildlife professionals concerning contemporary management issues. As such, we hope to provide a repository for wildlife management science and case studies that document and share manager experiences and lessons learned.

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