Investigating the Role of Mortality in Explaining the Negative Road Effect on Birds

Public Deposited
Resource Type
  • Lower abundance of forest birds near high traffic roads has been attributed to traffic noise, but the potential role of traffic mortality has not been adequately tested. To test the hypothesis that traffic mortality is an important contributor, I predicted that where there is a higher risk of traffic collision, there would be a stronger decrease in the number of forest birds close to roads over the course of the breeding season. I compared relative abundance of forest birds, at four distances from high traffic roads, at ten sites where the birds were more likely to cross the road (forest on the other side) vs. at ten sites where they were less likely to cross the road (open field on the other side). The prediction was supported, suggesting that roads bisecting natural areas may create population sinks. This highlights the importance of mitigating traffic mortality in important bird habitats.

Thesis Degree Level
Thesis Degree Name
Thesis Degree Discipline
Rights Notes
  • Copyright © 2014 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
Date Created
  • 2014


In Collection: