📊 GPS, accelerometers, spatial noise models, R
📍 UMR Environmental Acoustics (Cerema, Univ. Gustave Eiffel), Cerema Strasbourg, France
📩 maevatiana.ratsimbazafindranahaka@cerema.fr
📄 Send a CV, a motivation letter, and academic transcripts
🔗 www.umrae.fr/en/training/...
If you’re a Master’s student interested in movement ecology, biologging, noise & conservation, join me and some great collaborators for an internship on how wind turbines and associated noise shape lesser kestrel (Falco naumanni) movement and behaviour.
Happy to share that I'm starting as a Chargé de recherche (research faculty–type role) at Cerema in Strasbourg 🇫🇷, working on bioacoustics at UMRAE (Cerema × Univ Gustave Eiffel) 🎧🥳
Published! Gough et al: Daily energetic expenditure and energy consumption of short-finned pilot whales. Drones+tags+diet reveal pilot whales need ~142 squid/day
@marinemammalogy.bsky.social @jexpbiol.bsky.social @acs-ps.bsky.social @uhmanoa.bsky.social journals.biologists.com/jeb/article-...
Thanks!
🎥 Check out the linked video too! youtube.com/watch?v=Fyw6...
#HumpbackWhales #Tagging
#MarineScience #WhaleResearch #MarMam
New paper out! 🚨
We describe pre- & post-nursing behaviors in humpback whale mother–calf pairs from a unique dual-tag dataset: one tag on the mother, one on the calf.
It’s a rare look underwater at interactions we can’t see from the surface. 🌊 onlinelibrary.wiley.com/doi/10.1111/...
I’m sorry. My Bluesky profile is meant to be mostly about science. But I have to speak up: my country is not okay. We are being ignored, both internationally and by our own authorities. The violence is real, and the world must see this. #Madagascar #GenZ
I love the contrast between the images and the words of the president’s special adviser in this interview. And he’s quoting de Gaulle to say the president won’t step down; in a former French colony, led by a president with French nationality. The irony. #FreeMadagascar
Si un·e camarade sur place ou qui connaît bien #Madagascar veut proposer un article/itw pour #AlternativeLibertaire en 6k ou 12k signe (si possible avec illu) : journal@communisteslibertaires.org + contacts@communisteslibertaires.org
@rmaevatiana.bsky.social @nil-rahola.bsky.social
4/4
We are not okay.
We are not being heard.
The world must see this.
#Freedom #SOS #ListenToMadagascar
3/4
This is a desperate call for attention. Please, amplify.
Authorities will try to justify themselves, especially for international eyes.
2/4
Videos even show security forces standing by as chaos unfolded.
Was this deliberate?
To tarnish the movement’s image and justify more repression?
1/4
Hard to ignore how much “law enforcement” is deployed in the mornings in front of peaceful protesters in #Madagascar. Tear gas launched within minutes, even armored vehicles on site.
But then, come evening, when looting breaks out, they vanish.
#LeoDelestage #GenZ
Law enforcement deployed in Madagascar under the excuse of stopping a “minority seeking chaos.”
Tear gas & gun in the streets. Pure intimidation.
People are tired of power cuts, no water, corruption, and insecurity, all from failed governance.
Nothing is fine. The world must know.
#Leodelestage
I’ll be at the International Primatological Society Congress in Tana in a few days! 🐒
Happy to chat with anyone who's around. Come say hi! 😄
Hot off the press 📣: one of the most surprising and unsettling findings of my PhD. A novel social tradition emerged in the tool-using white-faced capuchins of Jicarón island… abducting and carrying the infants of another species. Thread with gifs, videos, and all the bizarre details 👇
🚨 Out this week in @pnas.org 🚨
The flagship paper from my PhD @mpi-animalbehav.bsky.social @livingingroups.bsky.social - We show surprising statistical similarities in animal behaviour across states, individuals, and even species.
www.pnas.org/doi/10.1073/...
(🧵 1/10)
#MarMam #animalcommunication
(7/7) Made possible thanks to:
#cetamada @bioacteam.bsky.social #UPSaclay #NeuroPSI #CNRS #UnivTana #MZBA
#HumpbackWhale #MarineScience #AnimalBehavior #3DTracking #WhaleResearch #MovementEcology #SciComm
(6/7) Curious about humpback whale nursing behavior?
Check out our published work:
🔗 peerj.com/articles/129...
🔗 link.springer.com/article/10.1...
🔗 royalsocietypublishing.org/doi/abs/10.1...
(5/7)🎥 The video plays at 5× speed, except for the nursing moment, which is in real time.
▶️ Also watch it here:
🔗https://youtu.be/Fyw6UUvNrf4
(4/7) It’s not perfect. Due to noise and some approximations, the individuals can look shaky or like they bump into each other. But it's all based on real data, and gives an amazing glimpse into their world.
(3/7) Using @blender3d.bsky.social, we turned the sensor data into a full 3D animation.
The calf turns blue while suckling 💙
See what happens before, during, and after nursing, like a drone view underwater. But no drone. No divers. (We would not be able to keep up with a diving whale anyway!)
(2/7) In this video, both mother and calf were tagged with sensors:
📦 accelerometer
🧲 magnetometer
🌊 pressure sensor
No camera needed.
We used their movement data to reconstruct their 3D paths during nursing off Sainte Marie, Madagascar.
(1/7) 🐋 Remember those humpback calf-perspective videos I used to share? Super cool, but they only showed what the calf’s camera could catch.
What if we could zoom out and see the whole scene?
Photo of a female humpback whale (Megaptera novaeangliae) with her calf off Sainte Marie, Madagascar. Photo credit: Association Cétamada.
Most diving mammals must work against their buoyancy until they reach a depth where they are neutrally buoyant, but not adult baleen whales. They use their laryngeal sac filled with air to adjust their buoyancy to remain suspended effortlessly at any depth
journals.biologists.com/jeb/article/...
