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Karthik Ashok

@karthikashok

Bioacoustics | biologging | conservation tech. Interested in cetacean ecology and animal movement. PhD candidate @CMST, Curtin University

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09.11.2024
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Latest posts by Karthik Ashok @karthikashok

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Congratulations to the newly minted Dr ZoΓ« Morange! 🐳πŸ§ͺ
It was a wonderful defense of a wonderful thesis! You can check out her thesis on the Seasonal and Individual patterns in habitat use of male sperm whales in their arctic foraging grounds here: nva.sikt.no/registration...

31.01.2026 13:03 πŸ‘ 18 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
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AI Studying Whale Songs Says It Thinks Whale Language Might Have Vowels Where linguists hear β€œvowels,” skeptics hear β€œclicks,” and whales hear… absolutely none of this nonsense.

Marine biologists are locked in what observers describe as β€œan academic slap fight” over whether sperm whales communicate using vowel-like patterns or whether researchers just need better microphones. Read more below...

#linguistics #Research #spermwhale #vowels #whale #OddNews

14.11.2025 21:59 πŸ‘ 16 πŸ” 7 πŸ’¬ 0 πŸ“Œ 1
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PhD Fellow in Ecology/Ecosystem-Based Management (289259) | UiT The Arctic University of Norway Job title: PhD Fellow in Ecology/Ecosystem-Based Management (289259), Employer: UiT The Arctic University of Norway, Deadline: Sunday, December 7, 2025

We are hiring: #PhD fellow in Ecosystem-based management and marine connectivityπŸ‹πŸ§ͺπŸ›°οΈ

Want to work with tracking data from migratory species to identify ecological corridors and help inform biodiversity conservation priorities?
Apply by Dec 7th!
@bioprotectproject.bsky.social
tinyurl.com/ytfmfhfc

20.11.2025 12:19 πŸ‘ 18 πŸ” 24 πŸ’¬ 0 πŸ“Œ 0
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.

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. πŸ¬πŸ”ŠπŸ‘‡

www.sciencedirect.com/science/arti...

08.11.2025 09:03 πŸ‘ 10 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
Job vacancies, employment opportunities, academic and professional positions - Careers at Curtin | Curtin University, Perth Australia Our mission is to transform lives and communities through education and research. Curtin employees form a unique and diverse community committed to innovative research and student learning. Find out a...

🚨Job alert! CMST are hiring an offshore fieldwork specialist to maintain our acoustic equipment, design and build moorings, manage field deployments, and join in data analysis, publication, presentation, and student support. Closing 21 Nov. staff.curtin.edu.au/job-vacancie...

#bioacoustics

01.11.2025 08:26 πŸ‘ 4 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

PhD candidacy βœ”οΈ Excited for #IBAC25 in a couple of weeks!

28.08.2025 15:36 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm happy to share our latest manuscript "Impediments to countering racist pseudoscience", coauthored with @gillianrbrown1.bsky.social @kztwyman.bsky.social & Marcus Feldman.

25.07.2025 09:17 πŸ‘ 75 πŸ” 32 πŸ’¬ 1 πŸ“Œ 2
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Omura's whale (Balaenoptera omurai) song features and structure in northern Australian waters This paper describes Omura's whale vocalizations recorded off northern Australia. Most common was a two-unit β€œdoublet” (17–50 Hz, peak 25.5 Hz, duration ∼15 s).

Fresh off the press from colleagues at the CMST lab (not on Bluesky), Australia. Paper focusing on Omura’s whale song features off northern Australia, published as JASA-EL EDITOR'S PICK

pubs.aip.org/asa/jel/arti...

@asa-news.bsky.social

27.07.2025 00:26 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Marine Mammal Acoustics in a Noisy Ocean This open-access book explores the potential impacts of noise on marine mammal species such as whales, dolphins, seals, seacows, and otters.

... and this: link.springer.com/book/10.1007... also open.

07.07.2025 11:37 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Exploring Animal Behavior Through Sound: Volume 2 This is an open access book describes the amazing anatomical and behavioral adaptations for usage of sounds among different animal taxa.

... check this out. Open. link.springer.com/book/10.1007...

06.07.2025 10:26 πŸ‘ 12 πŸ” 2 πŸ’¬ 1 πŸ“Œ 1
Details | Working at Bristol | University of Bristol

We are looking for a Research Assistant to contribute to our ongoing analysis of dolphin acoustic data from West Wales - collaboration between @wtsww.bsky.social @bristolbiosci.bsky.social 🐬
Deadline is 29th June - please share widely!
www.bristol.ac.uk/jobs/find/de...

15.06.2025 18:20 πŸ‘ 51 πŸ” 58 πŸ’¬ 2 πŸ“Œ 4

At the #ECSconference2025 this week covering a week of workshops and fascinating talks at the University of the Azores, ranging from telemetry studies in the Arctic to pinnipeds in the the sub-Antarctic

15.05.2025 17:47 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

New paper! Very happy to have been invited to join the effort led by @anaeg.bsky.social to bring together an impressive team to try and wreslte with the conservation implications of our findings about culture in Pacific sperm whales. Trabajo fenomenal Ana! πŸ‹πŸ¦‘πŸ§ͺ

02.05.2025 19:24 πŸ‘ 33 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0
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Join us for the the second edition of Sonic Connexions on May 5th, 2025 !

Register here:
whoi-edu.zoom.us/meeting/regi...

#bioacoustics πŸ§ͺ

14.04.2025 15:36 πŸ‘ 11 πŸ” 11 πŸ’¬ 0 πŸ“Œ 0

"What is rhythm and how can we study it?"
New pre-print from @lsburchardt.bsky.social @mhoeschele.bsky.social @musiccognition.bsky.social

1st chapter of forthcoming book "Nature Beats"

cc @andrearavignani.bsky.social @marcogamba.bsky.social

#prattle πŸ’¬
#bioacoustics

11.03.2025 13:45 πŸ‘ 11 πŸ” 5 πŸ’¬ 1 πŸ“Œ 0

This is one for the conservation tech and science community here - how do patents on things like genetic sequencing tech, sensor designs or analysis tools affect your research on conserving ecosystems? Any examples of them hindering or helping science? #conservationtech #ecology #scicomm

21.02.2025 16:11 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Congratulations!

29.01.2025 20:23 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Team of researchers explore social bonds of sperm whales in Mauritius

www.france24.com/en/video/202...

26.01.2025 21:34 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Two weeks ago I said "hey we should use this crazy new map projection" and today there is python code! Showing here global vessel presence density (from AIS) using the spilhaus projection in a single view where you can see the whole ocean.

07.01.2025 16:51 πŸ‘ 42 πŸ” 13 πŸ’¬ 2 πŸ“Œ 1
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Comparing neural networks against click train detectors to reveal temporal trends in passive acoustic sperm whale detections Passive acoustic monitoring (PAM) is an increasingly popular tool to study vocalising species. The amount of data generated by PAM studies calls for robust auto

New paper: Comparing neural networks against click train detectors to reveal temporal trends in passive acoustic sperm whale detections (DM lgf3@st-andrews.ac.uk for a copy) 🧡 pubs.aip.org/asa/jasa/art...

@pamguard.org @lrendell.bsky.social @seamammalresearch.bsky.social

02.01.2025 10:46 πŸ‘ 20 πŸ” 4 πŸ’¬ 2 πŸ“Œ 3
Submit a Record | Marine Mammal

Most live sightings and strandings records are collected onto this database. Feel free to enter your record here: www.marinemammals.in/database/sub...

30.12.2024 19:03 πŸ‘ 5 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Microsoft Forms

Introducing "Sonic Connexions", a series of online meetups designed for casual conversations about animal bioacoustics. It is open to anyone, so join us and become part of this vibrant community!

First meetup on January 29th, 2025!

Sign up here: forms.office.com/r/qhPcMUKz6w

πŸ§ͺπŸ”‰πŸŸπŸ‹πŸ¦œπŸͺ³

23.12.2024 05:20 πŸ‘ 34 πŸ” 13 πŸ’¬ 2 πŸ“Œ 1

🀯 "perhaps most great whales have an unrecognized potential for great longevity that has been masked by the demographic disruptions of industrial whaling. This unrecognized longevity has profound implication for basic biology and conservation of whales." Astonishing stuff.

21.12.2024 07:36 πŸ‘ 46 πŸ” 12 πŸ’¬ 1 πŸ“Œ 0
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Our research group has a !NEW PAPER! out on soil ecoacoustics - The efficacy of acoustic indices for monitoring abundance and diversity in soil soundscapes in Ecological Indicators. www.sciencedirect.com/science/arti.... A 🧡 on soil ecoacoustics...
#science #ecology #ecoacoustics #bioacoustics

13.12.2024 18:51 πŸ‘ 35 πŸ” 8 πŸ’¬ 4 πŸ“Œ 2

The link is broken?

12.12.2024 20:16 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yes please!

05.12.2024 10:05 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Bioacoustics Software Database

Searching for #bioacoustics tools to classify species, organize data, triangulate sounds, ...? πŸ¦‰πŸ‹πŸ¦‡πŸ¦—

Check out the (newly updated) Bioacoustics Software Database! rhine3.github.io/bioacoustics...

30.11.2024 21:52 πŸ‘ 68 πŸ” 27 πŸ’¬ 2 πŸ“Œ 1
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hey all, just coming out of my fieldwork haze and working through following folks back! A short intro: I'm a community ecologist working on diversity-productivity relationships in coral reefs :) Method development is my jam and I dabble in macroecology and ecoinformatics as well

29.11.2024 09:41 πŸ‘ 17 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
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Insects are making sounds the human ear can't hear. One Midwest scientist is listening Thousands of insect species use vibrations to communicate. Now, in part because of the foundational research of a Midwestern biology professor, more researchers are exploring insect vibrational commun...

www.krps.org/missouri-new...

25.11.2024 18:19 πŸ‘ 7 πŸ” 4 πŸ’¬ 0 πŸ“Œ 1
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Fewer than 7% of global hotspots for whale-ship collisions have protection measures in place A new study led by the University of Washington has for the first time quantified the risk for whale-ship collisions worldwide for four geographically widespread ocean giants that are threatened by...

Global risk of ship strikes on whales, new paper in Science by Anna Nisi et al. [incl. me]
www.washington.edu/news/2024/11...
Paper: doi.org/10.1126/scie...

21.11.2024 20:15 πŸ‘ 63 πŸ” 26 πŸ’¬ 3 πŸ“Œ 2