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Potential Movement Corridors and High Road-Kill Likelihood do not Spatially Coincide for Felids in Brazil: Implications for Road Mitigation.

Author(s): Cerqueira RC, Leonard PB, da Silva LG, Bager A, Clevenger AP, Jaeger JAG, Grilo C

The negative effects of roads on wildlife populations are a growing concern. Movement corridors and road-kill data are typically used to prioritize road segments for mitigation measures. Some research suggests that locations where animals move across roads ...

Article GUID: 33469694
What attributes are relevant for drainage culverts to serve as efficient road crossing structures for mammals?

Author(s): Brunen B, Daguet C, Jaeger JAG

J Environ Manage. 2020 Aug 15;268:110423 Authors: Brunen B, Daguet C, Jaeger JAG

Article GUID: 32510423
An adaptive plan for prioritizing road sections for fencing to reduce animal mortality.

Author(s): Spanowicz AG, Teixeira FZ, Jaeger JAG

Conserv Biol. 2020 Mar 30;: Authors: Spanowicz AG, Teixeira FZ, Jaeger JAG

Article GUID: 32227646
How do landscape context and fences influence roadkill locations of small and medium-sized mammals?

Author(s): Plante J, Jaeger JAG, Desrochers A

J Environ Manage. 2019 Apr 01;235:511-520 Authors: Plante J, Jaeger JAG, Desrochers A

Article GUID: 30711836
Road mortality locations of small and medium-sized mammals along a partly-fenced highway in Quebec, Canada, 2012-2015.

Author(s): Plante J, Bélanger-Smith K, Spanowicz AG, Clevenger AP, Jaeger JAG

Data Brief. 2018 Dec;21:1209-1215 Authors: Plante J, Bélanger-Smith K, Spanowicz AG, Clevenger AP, Jaeger JAG

Article GUID: 30456234
Title:How do landscape context and fences influence roadkill locations of small and medium-sized mammals?
Authors:Plante J,  Jaeger JAG,  Desrochers A
Link:https://www.ncbi.nlm.nih.gov/pubmed/30711836?dopt=Abstract
DOI:10.1016/j.jenvman.2018.10.093
Category:J Environ Manage
PMID:30711836
Dept Affiliation: GEOGRAPHY
1 Concordia University Montréal, Department of Geography, Planning and Environment, Montréal, Québec, H3G 1M8, Canada.
2 Concordia University Montréal, Department of Geography, Planning and Environment, Montréal, Québec, H3G 1M8, Canada; Loyola Sustainability Research Centre, Concordia University Montréal, 7141 Sherbrooke St. West, Montréal, Québec, H4B 1R6, Canada. Electronic address: jochen.jaeger@concordia.ca.
3 Université Laval, Centre d'étude de la forêt, Faculté de foresterie, de géographie et de géomatique, Québec, Québec, G1V 0A6, Canada.

Description:

How do landscape context and fences influence roadkill locations of small and medium-sized mammals?

J Environ Manage. 2019 Apr 01;235:511-520

Authors: Plante J, Jaeger JAG, Desrochers A

Abstract

Road mortality is the most easily visible effect of roads and traffic on wildlife populations. Mitigation measures such as fences and wildlife passages have been applied to reduce these effects. During the widening of Quebec's Highway 175 from two to four lanes between 2006 and 2012, 33 wildlife passages designed specifically for small and medium-sized mammals were installed under the road in combination with short fences. This study examined the effectiveness of the fences at reducing the number of small and medium-sized mammals killed along a 68?km section of the road while controlling for the potential confounding effects of landscape variables. Repeated daily mortality surveys were conducted by car during the summers of 2012-2015 to measure roadkill occurrence and detection probability. A total of 893 dead animals from 13 taxa were detected. Roadkill occurrence was significantly greater at fence ends than in fenced sections and unfenced sections (fence-end effect), indicating that the fences were not long enough to discourage animals from moving along the fence to the fence ends. Greater length would be required to meet the target of reduced road mortality. Shrubby vegetation in the median strip separating the two directions of the highway was associated with high roadkill occurrence for medium-sized species. Roadkill detection probability for all species combined was 0.72, ranging from 0.17 for small mammals (<1?kg) to 0.82 for medium-sized mammals (>1?kg). To reduce road mortality, when wildlife passages are constructed along with new highways or retrofitted to old highways, fences either should be continuous or sufficiently long to encourage passage use rather than movement around the fence ends. Future road mortality studies should be combined with data about wildlife abundance and detection probability to more accurately estimate the effects at the population level.

PMID: 30711836 [PubMed - indexed for MEDLINE]