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Title: Influencing Activity of Bats by Dimly Lighting Wind Turbine Surfaces with Ultraviolet Light

Journal Article · · Animals

Wind energy producers need deployable devices for wind turbines that prevent bat fatalities. Based on the speculation that bats approach turbines after visually mistaking them for trees, we tested a potential light-based deterrence method. It is likely that the affected bats see ultraviolet (UV) light at low intensities. Here, we present the results of a multi-month experiment to cast dim, flickering UV light across wind turbine surfaces at night. Our objectives were to refine and test a practical system for dimly UV-illuminating turbines while testing whether the experimental UV treatment influenced the activity of bats, birds, and insects. We mounted upward-facing UV light arrays on turbines and used thermal-imaging cameras to quantify the presence and activity of night-flying animals. The results demonstrated that the turbines can be lit to the highest reaches of the blades with “invisible” UV light, and the animal responses to such experimental treatment can be concurrently monitored. The UV treatment did not significantly change nighttime bat, insect, or bird activity at the wind turbine. Our findings show how observing flying animals with thermal cameras at night can help test emerging technologies intended to variably affect their behaviors around wind turbines.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1836855
Report Number(s):
NREL/JA--5700-81190; PII: ani12010009
Journal Information:
Animals, Journal Name: Animals Journal Issue: 1 Vol. 12; ISSN 2076-2615; ISSN ANIMG5
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Switzerland
Language:
English

References (102)

A smart curtailment approach for reducing bat fatalities and curtailment time at wind energy facilities journal April 2019
Migratory bats are attracted by red light but not by warm-white light: Implications for the protection of nocturnal migrants journal August 2018
Behavioral patterns of bats at a wind turbine confirm seasonality of fatality risk journal March 2021
Turning to the dark side: LED light at night alters the activity and species composition of a foraging bat assemblage in the northeastern United States journal March 2021
An estimator of wildlife fatality from observed carcasses journal July 2010
Rapid assessment of lamp spectrum to quantify ecological effects of light at night
  • Longcore, Travis; Rodríguez, Airam; Witherington, Blair
  • Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Vol. 329, Issue 8-9 https://doi.org/10.1002/jez.2184
journal June 2018
Effects of Wind Turbine Curtailment on Bird and Bat Fatalities journal February 2020
Dogs Detect Larger Wind Energy Effects on Bats and Birds journal March 2020
Evaluation of an acoustic deterrent to reduce bat mortalities at an Illinois wind farm journal November 2019
An alternative minimally invasive technique for genetic sampling of bats: Wing swabs yield species identification: Wing Swabs for Genetic Sampling of Bats journal September 2017
Do Tengmalm's owls see vole scent marks visible in ultraviolet light? journal October 1997
Bats in the Anthropocene: Conservation of Bats in a Changing World book January 2016
The eyes of oilbirds ( Steatornis caripensis ): pushing at the limits of sensitivity journal January 2004
Spatial contrast sensitivity of birds journal January 2006
Wildlife and renewable energy: German politics cross migratory bats journal February 2015
Comparing methods to estimate the proportion of turbine-induced bird and bat mortality in the search area under a road and pad search protocol journal November 2020
Low impact of two LED colors on nocturnal insect abundance and bat activity in a peri-urban environment journal April 2020
Movement responses of common noctule bats to the illuminated urban landscape journal December 2019
Optics of the eyes of echolocating bats journal November 1970
Behavioural response of the Mexican free-tailed bat, Tadarida brasiliensis mexicana, to visible and infra-red light journal March 1990
The importance of atmospheric attenuation for the echolocation of bats (Chiroptera) journal February 1971
Activity of tree bats at anthropogenic tall structures: implications for mortality of bats at wind turbines journal November 2014
Novel predation opportunities in anthropogenic landscapes journal April 2018
Different as night and day: wild bats modify echolocation in complex environments when visual cues are present journal October 2020
Migration of bats past a remote island offers clues toward the problem of bat fatalities at wind turbines journal September 2007
Fatalities at wind turbines may threaten population viability of a migratory bat journal May 2017
Factors associated with bat mortality at wind energy facilities in the United States journal November 2017
Molecular genetic analysis of air, water, and soil to detect big brown bats in North America journal September 2021
Assessing fatality minimization for hoary bats amid continued wind energy development journal October 2021
Evolution of opsin genes reveals a functional role of vision in the echolocating little brown bat (Myotis lucifugus) journal July 2009
Immunohistochemical evidence of cone-based ultraviolet vision in divergent bat species and implications for its evolution journal April 2012
Ecological impact assessments fail to reduce risk of bat casualties at wind farms journal November 2016
Post-construction bird and bat fatality monitoring studies at wind energy projects in Latin America: A summary and review journal June 2021
Considerations for upscaling individual effects of wind energy development towards population-level impacts on wildlife journal January 2019
Nonparametric statistical tests for single-case systematic and randomized ABAB…AB and alternating treatment intervention designs: New developments, new directions journal October 2012
Impacts of artificial lighting on bats: a review of challenges and solutions journal May 2015
When the excrement hits the fan: Fecal surveys reveal species-specific bat activity at wind turbines journal November 2017
Single case experimental design and empirical clinical practice. journal January 1981
Factors relevant to the validity of experiments in social settings. journal January 1957
Analyzing data from single-case alternating treatments designs. journal September 2018
Ultraviolet vision in a bat journal October 2003
Genome analysis reveals insights into physiology and longevity of the Brandt’s bat Myotis brandtii journal August 2013
Retention and losses of ultraviolet-sensitive visual pigments in bats journal August 2018
Peaks in bat activity at turbines and the implications for mitigating the impact of wind energy developments on bats journal February 2021
Silence and reduced echolocation during flight are associated with social behaviors in male hoary bats (Lasiurus cinereus) journal September 2021
Large-scale navigational map in a mammal journal August 2011
Behavior of bats at wind turbines journal September 2014
A Permutation Solution to Test for Treatment Effects in Alternation Design Single-Case Experiments journal October 2013
Analysis of Genomic Sequence Data Reveals the Origin and Evolutionary Separation of Hawaiian Hoary Bat Populations journal August 2020
Ultraviolet Vision in Vertebrates journal August 1992
Genetic assays for guano-based identification of species and sex in bats of the United States and Canada journal June 2020
Reducing bat fatalities at wind facilities while improving the economic efficiency of operational mitigation journal March 2017
Complex Distribution of Avian Color Vision Systems Revealed by Sequencing the SWS1 Opsin from Total DNA journal April 2003
Molecular Evolution of Bat Color Vision Genes journal August 2003
Functional Shifts in Bat Dim-Light Visual Pigment Are Associated with Differing Echolocation Abilities and Reveal Molecular Adaptation to Photic-Limited Environments journal July 2018
Ultraviolet vision in birds: the importance of transparent eye media journal January 2014
Response of bats to light with different spectra: light-shy and agile bat presence is affected by white and green, but not red light journal May 2017
Inconspicuous echolocation in hoary bats ( Lasiurus cinereus ) journal May 2018
Transition from conventional to light-emitting diode street lighting changes activity of urban bats journal September 2016
Advances in sex determination in bats and its utility in wind‐wildlife studies journal May 2013
Red aviation lights on wind turbines do not increase bat-turbine collisions: Bats are not attracted to aviation lighting journal February 2014
Adverse effects of artificial illumination on bat drinking activity journal February 2017
Controlling the False Discovery Rate: A Practical and Powerful Approach to Multiple Testing journal January 1995
Multiple mortality events in bats: a global review: Multiple mortality events in bats journal January 2016
Vision and Visual Navigation in Nocturnal Insects journal January 2011
Brightness Discrimination Thresholds in the Bat, Eptesicus fuscus journal January 1974
Spatial contrast sensitivity and grating acuity of barn owls journal July 2009
Portable Spectroscopy journal September 2018
A Simulation Study on Two Analytical Techniques for Alternating Treatments Designs journal May 2018
Effects of flickering light on the attraction of nocturnal insects journal August 2016
Do birds in flight respond to (ultra)violet lighting? journal December 2017
Correction: Evaluating the Effectiveness of an Ultrasonic Acoustic Deterrent for Reducing Bat Fatalities at Wind Turbines journal September 2013
Bat Eyes Have Ultraviolet-Sensitive Cone Photoreceptors journal July 2009
Evidence of Late-Summer Mating Readiness and Early Sexual Maturation in Migratory Tree-Roosting Bats Found Dead at Wind Turbines journal October 2012
Migratory bats respond to artificial green light with positive phototaxis journal May 2017
Taking a Bird's-Eye View…in the UV journal January 2000
Causes of Bat Fatalities at Wind Turbines: Hypotheses and Predictions journal December 2009
Behavior of Scandinavian Bats during Migration and Foraging at Sea journal December 2009
Altering turbine speed reduces bat mortality at wind‐energy facilities
  • Arnett, Edward B.; Huso, Manuela MP; Schirmacher, Michael R.
  • Frontiers in Ecology and the Environment, Vol. 9, Issue 4 https://doi.org/10.1890/100103
journal November 2010
Ecological impacts of wind energy development on bats: questions, research needs, and hypotheses journal August 2007
A Preliminary Evaluation on the Use of Dogs to Recover Bat Fatalities at Wind Energy Facilities journal December 2006
Behavioral Responses of Bats to Operating Wind Turbines journal January 2008
Patterns of Bat Fatalities at Wind Energy Facilities in North America journal January 2008
Mating Behavior as a Possible Cause of Bat Fatalities at Wind Turbines journal April 2008
A Large-Scale Mitigation Experiment to Reduce Bat Fatalities at Wind Energy Facilities journal September 2009
The Use of Vision in Flight by the Bat Myotis sodalis journal October 1965
Bat Mortality at Wind Turbines in Northwestern Europe journal December 2010
Conspicuous Visual Cues can Help Bats to Find Tree Cavities journal December 2011
Ultraviolet Vision May be Widespread in Bats journal June 2015
Bat Activity Rates do not Predict Bat Fatality Rates at Wind Energy Facilities journal June 2020
Dim ultraviolet light as a means of deterring activity by the Hawaiian hoary bat Lasiurus cinereus semotus journal October 2015
It's not black or white—on the range of vision and echolocation in echolocating bats journal January 2013
Resource Availability May Not Be a Useful Predictor of Migratory Bat Fatalities or Activity at Wind Turbines journal June 2018
Relating Bat Passage Rates to Wind Turbine Fatalities journal February 2020
Genetic Approaches Are Necessary to Accurately Understand Bat-Wind Turbine Impacts journal June 2020
Insect Prey Eaten by Hoary Bats ( Lasiurus cinereus ) Prior to Fatal Collisions with Wind Turbines journal December 2013
A Noninvasive Genetic Technique Using Guano for Identification of Corynorhinus townsendii (Townsend's Big-Eared Bat) Maternity Roosts journal December 2020
Randomized single-case AB phase designs: Prospects and pitfalls journal July 2018
A new LED lamp for the collection of nocturnal Lepidoptera and a spectral comparison of light-trapping lamps journal April 2017
Effects of wind energy generation and white-nose syndrome on the viability of the Indiana bat journal January 2016
Assessing bird avoidance of high-contrast lights using a choice test approach: implications for reducing human-induced avian mortality journal January 2018
An effective survey method for studying volant species activity and behavior at tall structures journal January 2020