Current graduate students

Cassondra Meredith Walker, Ph.D. student. Major advisor: Mona Papes. Remote sensing, Habitat modeling, Landscape conservation.   B.S. 2009, Oklahoma State University. Email: cassondra.walker@okstate.edu website: http://cassondramwalker.wix.com/cassondrawalker

Specific Interests

When integrated in ecology and conservation, remote sensing of landscapes enhances our ability to reliably assess habitat structure and quality at broader scales and provides novel data that previous in-field measurements techniques were unable to evaluate. This technology is important in understanding the relationships between declining migratory song bird distribution and habitat quality.

I look at two remote sensing techniques to measure the habitat architecture of shrub mottes utilized by Bell's Vireos. The first method, LiDAR technology used reflected laser light to gather spatial data in 3 planes and the second method, hyperspectral imaging, records the reflected wavelengths across the electromagnetic spectrum that can be used to distinguish between different landscape features.

Publications

• Barthell, John F., John M. Hranitz, JeAnna R. Redd, Meredith L. Clement, Katherine C. Crocker, Erica C. Becker, Kara D. Leavitt, Brant McCall, Megan Mill-Novoa, Cassondra M. Walker, Theodora Petanidou and Harrington Wells. 2012. Observations on Nectar Availability and Bee Visitation at Patches of Yellow Star Thistle and Chasteberry on the Northeast Agean Island of Lesvos (Greece). Bee Science 12(2):55-61.
• Barthell, John F., Meredith L. Clement, Harrington Wells, Katherine C. Crocker, Erica C. Becker, Kara D. Leavitt, Brant McCall, Megan Mill-Novoa, Cassondra M. Walker, Theodora Petanidou. 2009. Foraging Patterns of Bees in Response to Nectar Availability in Populations of the Invasive Thistle Species Cenaurea solstitalis L. in Native (Greece) and Non-Native (USA) Island Ecosystems. Integrative and Comparative Biology 49:E10.
• Van Els, Paul, Cassondra Walker, Tim O’Connell. 2009. Capture of a pure Gray-headed Junco (Junco hyemalis caniceps) in Payne County. Bulletin of the Oklahoma Ornithological Society 42: 9-12.