Tag Archives: bioacoustics

Hear ye! Hear ye! Bioacoustics are telling us about the health of our forests

If you’ve ever recreated in the stunning forests of the pacific northwest, you’ve probably taken in a peaceful moment listening to the wind rush through the trees, the pattering of the rain, the buzz of insects, and the chattering of birds. What you may not have considered, is that these sounds could be indicators of forest health. Second year masters student in Fisheries and Wildlife, Anna Bloch Kohlberg, is assessing the health of Pacific Northwest forests with bioacoustics. Bioacoustics uses sound to study an ecosystem or species. From animal communication and behavior to coral reef health, the study of bioacoustics has broad applications.


Anna is specifically investigating forests covered by the Northwest Forest Plan (NWFP). The NWFP is a series of federal policies and guidelines governing land use on federal lands in the Pacific Northwest. It was established to protect threatened and endangered species while also contributing to the social and economic sustainability of the region. In her research with Damon Lesmeister and Taal Levi, she analyzes bioacoustics data collected from 4000 recorders across the Northwest for acoustic signatures of indicator species. The processing and analysis of these massive datasets is aided by AI tools developed by the lab. From the analysis of these datasets they are able to get key information on the health of forests across the Northwest, which inform policy and conservation efforts.
Tune in at 7pm on November 10th at 7 pm PST on KBVR 88.7 FM to hear all about the sounds and silence of our forests and what that tells us about them!

If you miss the show, you can check out the interview wherever you get your podcasts, including on our KBVR page, Spotify, Apple Podcasts, or anywhere else!

Are You Listening? For Whale’s Sake, Keep it Down!

Our guest tomorrow night, Selene Fregosi PhD student in Fisheries and Wildlife, investigates noises produced by marine mammals and in particular, whales. Selene employs an under water microphone to record the bioacoustics produced by marine mammals over large spatial and temporal scales. Attached to remote controlled marine gliders, these microphones can record bioacoustics of marine mammals, some of which produce sounds of inaudible frequencies. Marine gliders limit the time and expense of whale monitoring from the deck of a marine vessel. This cost effective alternative allows Selene to collect oceanographic measurements like temperature and salinity and her audio recordings remotely through satellite transmitted programing. Selene’s explorations through her project will provide information about the effectiveness of this technology for future research with marine mammals.

Selene getting the glider ready.

Selene getting the glider ready with the help of Alex Turpin.

In addition to the practical aspects of this research, Selene is interested in how noise pollution from ships, submarines, and other vessels affects the behavior of charismatic mega fauna. By examining the sound spectra of an audio recording, Selene can identify each species by their characteristic sound patterns. After deciphering bioacoustics obtained from the microphoned-gliders, Selene can understand whale behavior during different times of year or different locations around the world. In fact, some of Selene’s recordings are the first ever to record whale behavior and movement off the coast of Guam!

Characteristic sound pattern of a beaked whale.

Characteristic sound pattern of a beaked whale.

Selene hopes that in the future, her work will aid the conservation of whales and other marine mammals. Deciphering bioacoustics can allow for the identification of when and where specific species are breeding, and conservationists can then work to reduce noise pollution. As our oceans become noisier from human activities, Selene’s research could provide accurate and specific information to limit disruption of crucial population maintenance and growth.

Learn more about Selene’s and other interesting research from the Klinck lab at OSU by visiting their blog.

Join us Sunday, November 22 at 7 pm to hear more about Selene’s research and her unique journey to graduate school. Tune in to KBVR Corvallis 88.7 FM or stream the show live!