Jenny Tennessen

PhD Candidate

Email:  jbt148@psu.edu

Office: Mueller Laboratory, room 508

Phone: 814.867.2252

 

Curriculum Vitae

 

Education

 

 

 

 

Research Interests

 

Environmental noise is an increasingly common occurrence globally due to anthropogenic activities including shipping, transportation, naval operations and industrial activities.  These sounds are relatively recent in evolutionary history, and have created novel acoustic environments that pose new challenges to ecological interactions among organisms.   Many species rely on sounds for communication, foraging, defense, reproduction and navigation, and increasing noise across habitats may alter these abilities in new ways.

 

My research is broadly focused on identifying how novel acoustic environments affect ecological processes and interactions among organisms.  I approach this problem from three different angles, using three different case studies.  First, I employ sound propagation modeling (parameterized by data from opportunistic observations) to determine how shipping noise reduces the communication ranges between North Atlantic right whales (Eubalaena glacialis).  This project focuses on communication between mothers and calves during separation just prior to weaning in the Bay of Fundy, as well as communication between reproductive females and males.  My goal is to determine how communication range of this highly endangered species is affected by shipping noise, as well as how noise reduces human abilities to passively detect North Atlantic right whale calls for management and conservation purposes.

 

 

 

Publications

 

Tennessen, J. B. & S. E. Parks.  In prep. The “Acoustic Adaptation Hypothesis” can explain differences frequency characteristics of baleen whale vocalizations. Target: Proceedings of the Royal Society B: Biological Sciences

 

Tennessen, J. B.  2009.  The effects of anthropogenic noise on the vocal behavior of southern resident killer whales (Orcinus orca).  M. S. Thesis. University of Wisconsin – Madison

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My second project employs passive acoustic monitoring and field acoustic playback techniques to determine if an invasive species, the Cuban treefrog (Osteopilus septentrionalis) competes for acoustic space with native treefrogs in south-central Florida.  This project explores how competition structures acoustic communities and seeks to identify a novel pathway through which invasive species can alter ecological communities.

 

My third project uses field and lab playbacks, and immunological techniques to understand the effects of noise on physiology and fitness.  Working with wood frogs (Rana sylvatica) in central Pennsylvania, I am particularly interested in determining if noise impedes reproductive opportunities, and identifying the relationship between noise and stress hormone levels, as an indicator of fitness effects of noise exposure.

BS

2005

University of Wisconsin—Madison

MS

2009

University of Wisconsin—Madison