Literaturdatenbank
Literaturdatenbank |
|
 |
|
Dorland, A. (2012). Determining the impacts of high traffic roads on painted turtle (chrysemys picta marginata) populations in eastern ontario. Unpublished thesis , Carleton University, Ottawa, Ontario.
Added by: Admin (06 Jan 2014 18:24:20 UTC) |
| Resource type: Thesis/Dissertation BibTeX citation key: anon2012.15042 View all bibliographic details  |
Categories: General Keywords: Chrysemys picta, Emydidae, Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises Creators: Dorland Publisher: Carleton University (Ottawa, Ontario) |
Views: 1/662
Views index: 17% Popularity index: 4.25% |
| Abstract |
|
Road mortality is thought to be a leading cause of turtle population decline. Empirical evidence is lacking however, thus the purpose of this study was to test the prediction that road mortality reduces turtle populations. While controlling for potentially confounding variables, I compared relative abundance of painted turtles (Chrysemys picta marginata) in 20 ponds across eastem Ontario, 10 very elose to high traffic roads and 10 as far as possible from any major roads. I did not find a significant effect of roads on turtle relative abundance, suggesting that road mortality does not negatively affect the sampled turtle populations. I suggest that other factors may reduce or counter-balance the negative effects of road mortality. There are however, circumstances in which road mortality poses a distinct threat to turtle population persistence because of forced over-Iand migration across high traffic roads. It is at such sites that mitigation efforts for painted turtles should be focussed.
Added by: Admin |