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Field Assessments Of Anthropogenic Noise Effects On Free-Swimming Fishes, Rachel Hannah Pieniazek
Field Assessments Of Anthropogenic Noise Effects On Free-Swimming Fishes, Rachel Hannah Pieniazek
Electronic Theses and Dissertations
Anthropogenic noise is globally increasing in aquatic ecosystems and causes adverse repercussions in many fish species, yet its effects in the field are not well understood. Here, I test the impact of boat noise on a number of wild freshwater and marine fish species as well as captive black bullhead (Ameiurus melas), a common species in the Laurentian Great Lakes with known hearing specializations. In a laboratory setting, black bullhead were exposed to boat noise, and a quiet control then monitored for changes in foraging behaviours and swimming patterns when presented with food. Black bullhead exposed to boat noise foraged …
Bioacoustic Monitoring Of Bird Communities And Behaviour In Fragmented And Regenerating Tropical Dry Forests, Kiirsti Owen
Bioacoustic Monitoring Of Bird Communities And Behaviour In Fragmented And Regenerating Tropical Dry Forests, Kiirsti Owen
Electronic Theses and Dissertations
Vocalizations provide important information about how animals respond to changes in their environments. In this thesis, I use bioacoustic tools to investigate how birds respond to habitat restoration and fragmentation in tropical dry forests of Costa Rica. Tropical dry forests are one of the most imperilled ecosystems in the world, and my study site, the Área de Conservación Guanacaste, is home to the largest remaining stand of this unique ecosystem. In both chapters of this thesis, I collected recordings of bird vocalizations to study avian responses to changes in the Área de Conservación Guanacaste. In my first data chapter, I …