Use and function of wildlife habitat

Analyzing spatiotemporal habitat use and movement data are key to monitoring and protecting wildlife populations. It is also critical to understand how multiple stressors effect habitat function to support data-driven wildlife management and habitat restoration strategies in a changing climate.

I use radio tracking and GPS devices to collect spatiotemporal habitat use and movement data on freshwater turtles. In particular, an important focus is monitoring changes in habitat use and movement patterns as a result of development and land cover alterations.

I am also interested in characterizing the form and function of wetlands used by reptiles to survive winter, which has important implications for the health of northern populations (e.g., emerging diseases). 

Selected publications:

Markle, C.E., Sandler, N.A., Freeman, H.C.A., & J.M. Waddington. 2021. Multi-scale assessment of rock barrens turtle nesting habitat: Effects of moisture and temperature on hatch success. Ichthyology and Herpetology doi: 10.1643/h2020125.

Markle, C.E., Moore, P.A., & J.M. Waddington. 2020. Primary drivers of reptile overwintering habitat suitability: Integrating wetland ecohydrology and spatial complexity. BioScience. doi:10.1093.biosci/biaa059.

Moore, P.A., Smolarz, A.G., Markle, C.E., & J.M. Waddington. 2019. Hydrological and thermal properties of moss and lichen species on rock barrens: Implications for turtle nesting habitat. Ecohydrology 12(2):e2057. doi:10.1002/eco.2057.

Markle, C.E., Rutledge, J.M., & P. Chow-Fraser. 2018. Factors affecting coastal wetland occupancy for the Eastern Musk Turtle (Sternotherus odoratus). Herpetologica 74(3):236–244. International media coverage by the Great Lakes Echo. Link: Great Lakes Echo.

Markle, C.E. & P. Chow-Fraser. 2017. Thermal characteristics of overwintering sites for the Blanding’s turtle (Emydoidea blandingii) across three study areas in Ontario, Canada. Herpetological Conservation and Biology 12:241–251.

Markle, C.E. & P. Chow-Fraser. 2016. An integrative approach to regional mapping of suitable habitat for the Blanding’s turtle (Emydoidea blandingii) on islands in Georgian Bay, Lake Huron. Global Ecology and Conservation 6(2016):219–231.

Markle, C.E. & P. Chow-Fraser. 2014. Habitat selection by the Blanding’s turtle (Emydoidea blandingii) on a protected island in Georgian Bay, Lake Huron. Chelonian Conservation and Biology 13(2):216–226.