Environmental Studies Commons^™

The Feasibility Of Using Drones To Count Songbirds, Andrew M. Wilson, Janine M. Barr, Megan E. Zagorski

Environmental Studies Student Conference Presentations

Point and transect counts are the most common bird survey methods, but are subject to biases and accessibility issues. To eliminate some of these biases, we propose attaching a recorder to a consumer-grade quadcopter (Unmanned Aerial Vehicle, or UAV) to estimate songbird populations from audio recordings. We conducted a blind experiment using broadcast recordings to estimate the detection radius of a compact recorder attached to a UAV, and found that the detection radius did not vary significantly when the UAV was flown at elevations of 20, 40 and 60m. We field tested our system by comparing UAV-based bird counts with …

Now Hear This! Orientation And Behavioral Responses Of Hatchling Loggerhead Sea Turtles, Caretta Caretta, To Environmental Acoustic Cues, Bethany Holtz

Celebration

Although the visual and geologic orientation cues utilized by sea turtle hatchlings during seafinding, when they move from the nest to the sea after hatching, have been well studied, the potential for auditory stimuli to act as an orientation cue has not been well explored. Over the past several decades our knowledge of the auditory capacity of sea turtles has increased greatly, yet little is known about the biological significance of this sensory ability. To investigate whether hatchlings can use ocean sounds during seafinding, we measured the behavioral responses of hatchling loggerhead sea turtles (Caretta caretta) collected from nesting beaches …

Lens On Habitat Destruction: A Photo Essay In Double Exposure, Bethany Holtz

Student Publications

Human greed and ignorance bulldoze through nature, leaving behind scarred landscapes and broken ecosystems. Within the world’s aquatic environments, human actions have irreversibly fragmented and shattered habitats of countless animals. Voiceless, these displaced animals suffer largely in silence—their stories untold and invisible. Using my lens to expose their cries, my photography uncovers the narrative of habitat destruction.

In this photo essay, I juxtapose the pristine and degraded habitats of five threatened aquatic species using double exposure techniques, a method where two disconnected images are merged to create one unified work. By balancing light, opacity, color, and transparency, I focus attention …