New publication 🐋 fresh out of our #bioacoustics lab! Congratulations to our dedicated colleague @beeden.bsky.social & co-authors 🥳
HIGH FREQUENCY #VESSELNOISE 🛥️ MASKS ECHOLOCATION AND COMMUNICATION 🔉 IN #HARBOURPORPOISES 🐬
Read the full article here: doi.org/10.1121/10.0...
🥂Last month, we hatched 2 new Master’s graduates 👨🎓👩🎓 who both successfully defended their theses:
🦇 Sebastian Mortensen: Aerial hawking by a gleaning specialist bat (Trachops cirrhosus) does not involve a resolution buzz 🎤
🦭 Naja Christensen: Field metabolic rate of Harbour seals ⚡
Congratulations 🥳
Our PhD students: @cmarcolin.bsky.social & @hejfabienne.bsky.social & help from @marinemammalsau.bsky.social
Last week, our 2 PhD students & colleagues successfully conducted a full turnover of 8 #acousticrecording stations 🎧 out in Aarhus Bay 🌊. The data feeds into a year-round #marinesoundscape monitoring programme to assess #noisedisturbance for #harbourporpoises 🚢🐬(funded by AVJ Naturfond).
🎙️🔊🐬 ALL IS WELL IF YOU KNOW YOUR RECORDING CHAIN🎙️🔊🦇
A few days ago we had our annual walkthrough of recording chain essentials, to all remind ourselves what it requires to make trustworthy and high-quality recordings! That is always useful for both aspiring and seasoned bioacousticians 🧐
Last week, our lab successfully tested a new hydrophone 🎙️calibration ⚖️ method out in the port of #Aarhus ⚓. Tests like these will allow for more accurate sound measurements - such as noise levels from shipping 🚢 and other maritime activities. #bioacoustics #marineacoustics
Graphical abstract for the paper 'A simple categorization method for frequency notched echolocation.' Here, we describe how from four passive acoustic monitoring stations in Skagerrak, echolocation clicks from white-beaked dolphins were manually audited. These signals exhibit distinct spectral peaks and notches between 20-80 kHz in 75-90% of visually confirmed species recordings. A nonlinear least squares model was used to dynamically map the spectral banding pattern. Our template was significantly correlated with 87% audited white-beaked dolphin events, making this a viable, computationally efficient method.
It's live! Please see my new paper in Ecological Informatics on the #detection and #categorization of frequency notched echolocation from wild recordings. 🐬🔊👇
www.sciencedirect.com/science/arti...
Molly the #bioacoustics #corgi joined, too!
🦇🌙⛏ IT'S SPOOKY SEASON 🎃💀🕷
When you study #bioacoustics and #bats, there is always an appropriate Halloween outing!
This year, we went to the Mønsted limestone mine, a 60-km-long man-made cave system and THE place to be for winter hibernation (9000 bats surely can't be wrong!).
🦇CARNIVOROUS BAT RIVALS BIG CATS 🦁 IN HUNTING ABILITY
Researchers from our lab incl. Leonie Baier & @laurastidsholt.bsky.social discovered that the fringe-lipped bats of Panama hunt for prey near their own body size - similar to large cats!
doi.org/10.1016/j.cu...
Fotos: Grant Maslowski
Your 🎃 weekend read🦇☕🛋️: The fascinating story behind the latest work from @laurastidsholt.bsky.social , @elena-tena.bsky.social & colleagues @ebdonana.bsky.social covered by @nytimes.com !
Paper & incredible science alert: Our assistant professor @laurastidsholt.bsky.social & a passionate team @elena-tena.bsky.social @ebdonana.bsky.social found proof for greater nocturnal #bats 🦇 preying on migratory birds 🐦 AND devouring them in flight! #bioacoustics
www.science.org/doi/10.1126/...
Intense days for our PhD student @hejfabienne.bsky.social. In a joint effort @au.dk ,#ntnu PhD student @leayero.bsky.social & #UiB, have deployed 8 geophones + 2 soundtrap hydrophones along a #DAS enabled #fibercable in #Svalbard to compare #shipnoise measurements in an Arctic fjord 🚢🔊🐋 #seasounds
Breaking News 🚨: Our #bioacoustics 🔉🐬🦇lab seeks a permanent new colleague in a tenure-track assistant professor 🥷position. Excited? Then join our vibrant group of 15 researchers, postdocs and PhD students at AU who work with #marinemammal #acoustics, #conservation #physiology and #effectsofnoise!
Ready to join me for some #marineacoustics research in the #arcticocean ? ❄️⛴️🎧🦭🐳
Where am I going?
@bioacousticsau.bsky.social @marinemammalsau.bsky.social
Stay safe 🥰
📢Exciting news 1: We just launched our new Center for Active Sensing with Sound 🎧🥳
📢Exciting news 2: We are looking for 2 new PhD students 👩🎓👨🎓 in “Echolocation in bats🦇 and toothed whales 🐬” – read more here:
Hahaha, good one 🤣🎃 They might float, too 🤔? But the biodegradability might be slightly too fast 😅
Successful day out in Aarhus Bay 🇩🇰⛴️ for our PhDs @cmarcolin.bsky.social @hejfabienne.bsky.social & MSc Matthias
⬇️deployed 8 hydrophone 🎧 stations with @innovasea.com releases and
⬆️recovered 2 after 9 months!
There #bioacoustics PhD project investigates #shippingnoise and impacts on porpoises 🐬.
🔊 Paper alert! 🐬🎧
Noise of high-speed vessels 🚤 impairs the #biosonar ability of #harbourporpoises 🐬 - making it more difficult for them to
🤯 sense surroundings,
🧭 navigate and
🐟 hunt prey
within several hundred meters.
🥳Huge contribution to understanding masking effects!
🌐 doi.org/10.1242/jeb....
🌊🔊 Hi Bluesky! I’m Julie, a master’s student at @bioacousticsau.bsky.social, studying underwater noise, soundscapes, and narwhal behavior in Northwest Greenland.
I’ve worked on bycatch mitigation and behavior in harbour porpoises, and humpback whale photo-ID in Greenland. 🐳❄️ #bioacoustics #arctic
THIS IS HOW WE DO IT 🐬🎧- (when conducting #acousticmonitoring at #windfarms, e.g. for #Energinet in the #NorthSea)
- The equipment is deployed ⚓🎙️,
- then, stays out at sea for months🌊📆,
- then, we recover it using acoustic releases ⚓✨,
- and analyse it back home 🖥️🔊.
#appliedbioacoustics
POV: Mia & Jakob successfully recovered an 🔊 acoustic array at a #WindFarm in the #NorthSea 🌊 - part of our #AcousticMonitoring work for #Energinet.
With the gear safely back, we can now look (& listen🎧🖥️) for #porpoise 🐬 vocalisations to learn more about how they move around the wind turbines.
Happy Monday. 😅
Some of us where out in the North Sea this weekend 🌊 #justhangingaround bioacousticians
#bioacoustics
Hej,
🔊🐋🦇we are the group behind Prof. Peter T. Madsen at the #Bioacoustics Lab @au.dk .
We eavesdrop 🎧🤫 on oceans 🌊 and night skies 🌙 - turning sound into science to understand & protect #marinemammals 🐬🦭 and #bats 🦇 🧛🏻♀️.
Join us for insights from the secret lives of #bioacousticians.
That would be fun and useful, yes please ☺️
We are incredible thankful for the dedication, skills and joy you brought to the lab 😃 and you know that you will always be part of the DK squad 🇩🇰🔉🐬
And we are for sure listening and tagging along 🎧🤫😋
