Colonization and usage of an artificial urban wetland complex by freshwater turtles
MacDonald, Suzanne E.
MetadataShow full item record
Conservation authorities invest heavily in the restoration and/or creation of wetlands to counteract the destruction of habitat caused by urbanization. Monitoring the colonization of these new wetlands is critical to an adaptive management process. We conducted a turtle mark-recapture survey in a 250 ha artificially created wetland complex in a large North American city (Toronto, Ontario). We found that two of Ontario’s eight native turtle species (Snapping turtle (SN), Chelydra serpentina, and Midland Painted (MP) turtle, Chrysemys picta marginata) were abundant and both were confirmed nesting. The Blanding’s turtle (Emydoidea blandingii) was present but not well established. Species richness and turtle density were not equally distributed throughout the wetland complex. We noted SN almost exclusively populated one water body, while other areas of the wetland had a varying representation of both species. The sex ratios of both SN and MP turtles were 1:1. We tracked the movement of Snapping and Blanding’s turtles and found that most turtles explored at least two water bodies in the park, that females explored more water bodies than males, and that 95% of turtles showed fidelity to individual overwintering wetlands. We performed DNA analysis of two Blanding’s turtles found in the created wetlands and could not assign these turtles to any known profiled populations. The genetic data suggest that the turtles probably belong to a remnant local population. We discuss the implications of our results for connectivity of artificial wetlands and the importance of the whole wetland complex to this turtle assemblage.
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
The Turtle Head Immobilization System (THIS): A Tool for Faster and Safer Handling and Processing of Aggressive Turtle Species Munscher, Eric C.; Butterfield, Brian P.; Carstairs, Sue; Dupuis-Desormeaux, Marc; Munscher, Jessica; Osborne, Wayne; Hauge, Brian (2015-12)The turtle head immobilization tool (THIS) is an efficient and cost effective tool to aid in the processing of large, aggressive turtles such as the Eastern Snapping Turtle (Chelydra serpentina). THIS aids in the reduction ...
‘Of Turtles and Tactics: Conservation and Sustainable Community Development in San Francisco, Costa Rica.’ van Oudenhoven, Frederik J.W. (Faculty of Environmental Studies, York University, 2007-07-27)A question often faced by conservationists in developing countries is whether their efforts to protect endangered species will ever work if they do not also address human poverty. Sea turtles are a classic example, and the ...
Cook, Doc [composer] (New York : Jerome H. Remick & Co., 1913, 1913)