Effectiveness of aerial wildlife crossings: Do wildlife use rope bridges more than hazardous structures to cross roads?
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad de Costa Rica
2021
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| _version_ | 1876454354936922112 |
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| author | Katra Laidlaw |
| author_facet | Katra Laidlaw |
| contents | Effectiveness of aerial wildlife crossings: Do wildlife use rope bridges more than hazardous structures to cross roads? Katra Laidlaw Eben Broadbent Stephanie Eby Biología Costa Rica telephone cables behavioral ecology endangered species wildlife management Introduction: Although wildlife crossing structures have proven successful at reducing wildlife-vehicle collisions and linking fragmented habitat, their ability to prevent electrocutions of arboreal wildlife has not been closely examined. Objective: To evaluate the effectiveness of aerial rope bridges in restoring habitat connectivity for arboreal species in Manuel Antonio, Costa Rica, while preventing electrocutions by determining 1) what species are using the rope bridges and 2) whether wildlife prefer to use rope bridges instead of other hazardous structures that cross the roads (such as telephone cables, which are often in close proximity to electric wires). Methods: From January to May 2016, nine rope bridges along the highly-trafficked main road that extends from Quepos to Manuel Antonio, Costa Rica, were monitored using camera traps, and ten rope bridges were observed directly along a paved side road off the main road. Results: A total of 11 species were seen using the bridges, and 1 540 crossings were witnessed via camera traps and observations (1 234 via camera traps, 306 during observations). Results from a paired t-test showed no significant difference in the average number of individuals crossing the road via rope bridges versus telephone cables (t(8) = 1.027, P = 0.334). Conclusions: Rope bridges are used by a variety of arboreal wildlife species with a high degree of frequency; however, due to the equally high usage of telephone cables by arboreal wildlife, they are insufficient to prevent wildlife electrocutions on their own. Rope bridges should be installed in tandem with other methods to prevent electrocutions, such as insulating electric wires, to facilitate the safe passage of wildlife over roads. 2021 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44969404020 https://www.redalyc.org/journal/449/44969404020/ https://www.redalyc.org/journal/449/44969404020/html/ https://www.redalyc.org/journal/449/44969404020/44969404020.epub https://www.redalyc.org/journal/449/44969404020/movil 10.15517/rbt.v69i3.47098 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.69 |
| format | Artículo científico |
| id | redalyc_44969404020 |
| institution | Redalyc |
| language | en |
| publishDate | 2021 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Effectiveness of aerial wildlife crossings: Do wildlife use rope bridges more than hazardous structures to cross roads? Katra Laidlaw Biología Costa Rica telephone cables behavioral ecology endangered species wildlife management Effectiveness of aerial wildlife crossings: Do wildlife use rope bridges more than hazardous structures to cross roads? Katra Laidlaw Eben Broadbent Stephanie Eby Biología Costa Rica telephone cables behavioral ecology endangered species wildlife management Introduction: Although wildlife crossing structures have proven successful at reducing wildlife-vehicle collisions and linking fragmented habitat, their ability to prevent electrocutions of arboreal wildlife has not been closely examined. Objective: To evaluate the effectiveness of aerial rope bridges in restoring habitat connectivity for arboreal species in Manuel Antonio, Costa Rica, while preventing electrocutions by determining 1) what species are using the rope bridges and 2) whether wildlife prefer to use rope bridges instead of other hazardous structures that cross the roads (such as telephone cables, which are often in close proximity to electric wires). Methods: From January to May 2016, nine rope bridges along the highly-trafficked main road that extends from Quepos to Manuel Antonio, Costa Rica, were monitored using camera traps, and ten rope bridges were observed directly along a paved side road off the main road. Results: A total of 11 species were seen using the bridges, and 1 540 crossings were witnessed via camera traps and observations (1 234 via camera traps, 306 during observations). Results from a paired t-test showed no significant difference in the average number of individuals crossing the road via rope bridges versus telephone cables (t(8) = 1.027, P = 0.334). Conclusions: Rope bridges are used by a variety of arboreal wildlife species with a high degree of frequency; however, due to the equally high usage of telephone cables by arboreal wildlife, they are insufficient to prevent wildlife electrocutions on their own. Rope bridges should be installed in tandem with other methods to prevent electrocutions, such as insulating electric wires, to facilitate the safe passage of wildlife over roads. 2021 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44969404020 https://www.redalyc.org/journal/449/44969404020/ https://www.redalyc.org/journal/449/44969404020/html/ https://www.redalyc.org/journal/449/44969404020/44969404020.epub https://www.redalyc.org/journal/449/44969404020/movil 10.15517/rbt.v69i3.47098 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3 Vol.69 |
| title | Effectiveness of aerial wildlife crossings: Do wildlife use rope bridges more than hazardous structures to cross roads? |
| topic | Biología Costa Rica telephone cables behavioral ecology endangered species wildlife management |
| url | https://www.redalyc.org/articulo.oa?id=44969404020 https://www.redalyc.org/journal/449/44969404020/ https://www.redalyc.org/journal/449/44969404020/html/ https://www.redalyc.org/journal/449/44969404020/44969404020.epub https://www.redalyc.org/journal/449/44969404020/movil |