Mitigating avian collisions with power lines through illumination with ultraviolet light

Avian Conservation and Ecology

article

David M. Baasch¹  Amanda M. Hegg²  James F. Dwyer³  Andrew J. Caven¹  William E. Taddicken²  Catherine A. Worley²  Amanda H. Medaries⁵  Cody G. Wagner²  Phoebe G. Dunbar⁶  Nicole D. Mittman⁶ 

[1] Platte River Whooping Crane Maintenance Trust Inc.;Iain Nicolson Audubon Center at Rowe Sanctuary, National Audubon Society;EDM International, Inc.;International Crane Foundation;Crane Trust;University of Nebraska-Kearney

关键词: ACAS;    Antigone canadensis;    Avian Collision Avoidance System;    Branta canadensis;    Canada Goose;    Nebraska;    Platte River;    power line marking;    Sandhill Crane;    UV technology;   

DOI  :  10.5751/ACE-02217-170209

学科分类：口腔科学

来源: Resilience Alliance Publications

【 摘 要 】

Collisions with anthropogenic structures by long-distance migrants and threatened and endangered species are a growing global conservation concern. Increasing the visibility of these structures may reduce collisions but may only be accepted by local residents if it does not create a visual disturbance. Recent research has shown the potential for ultraviolet (UV) light, which is nearly imperceptible to humans, to mitigate avian collisions with anthropogenic structures. We tested the effectiveness of two UV (390–400 nm) Avian Collision Avoidance Systems (ACASs) at reducing collisions at two 260-m spans of marked power lines at the Iain Nicolson Audubon Center at Rowe Sanctuary, an important migratory bird stopover location in Nebraska. We used a randomized design and a tiered model selection approach employing generalized linear models and the Akaike Information Criterion to assess the effectiveness of ACASs considering environmental (e.g., precipitation) and detection probability (e.g., migration chronology) variables. We found focal (assessed power line) and distal (neighboring power line) ACAS status and environmental variables were important predictors of avian collisions. Our top model suggests that the focal ACAS illumination reduced collisions by 88%, collisions were more likely at moderate (10–16 km/h) compared to lower or higher wind speeds, and collision frequency decreased with precipitation occurrence. Our top model also indicates that the distal ACAS illumination reduced collisions by 39.4% at the focal power line when that ACAS was off, suggesting a positive “neighbor effect” of power line illumination. Although future applications of ACASs would benefit from additional study to check for potential negative effects (for example, collisions involving nocturnal foragers such as bats or caprimulgiform birds drawn to insects), we suggest that illuminating power lines, guy wires, towers, wind turbines, and other anthropogenic structures with UV illumination will likely lower collision risks for birds while increasing human acceptance of mitigation measures in urban areas.

【 授权许可】

CC BY