Tove Petersson

Provided by Dr Fredrik Christiansen, Senior Researcher PhD, MSc, BSc Marine Mammal Research, Department of Ecoscience Aarhus University

'A mechanistic approach to understanding birth timing, calf growth, and residency of southern right whale mother–calf pairs on their calving ground'

www.sciencedirect.com/science/arti... 🌐🌏🌱🧪

Diagram below for variables and mechanistic model used in the study 🐋

Image by Dr Fredrik Christiansen, Senior Researcher PhD, MSc, BSc Marine Mammal Research, Department of Ecoscience Aarhus University

Our recent study in Ecological Modelling shows that southern right whale mother-calf pairs leave calving grounds once calves reach ~8 m in length, not after a fixed time. Larger, fatter mothers help calves reach departure size faster! 🐋⚡

Read it here:
www.sciencedirect.com/science/arti... 🌐🌏🌱🧪

Seasonal Shift in Exposure and Accumulation of PFAS and Heavy Metals in High Arctic Reindeer Seasonal fluctuations in contaminant concentrations are an important, yet often overlooked, aspect of Arctic wildlife monitoring, particularly in species like the Svalbard reindeer (Rangifer tarandus ...

New Paper! ❄️🦌

First measurements of PFAS & heavy metals in Svalbard reindeer, with seasonal trends. PFAS have increased over the past decade, highlighting ongoing exposure in remote Arctic wildlife.

🌐🌏🧪🌱

#Arcticecotoxicology #Science #Svalbardreindeer #ecology #research #Arctic #pollution

Polar bears are being poisoned by mercury dumped a century ago | BBC Science Focus Magazine Toxic tides are delivering the dangerous pollutant to animals and people at the top of the world

Here is the story covered by BBC w/ free access 🌏
@bbcscience.bsky.social

🌐🐋🐻‍❄️🧪

#marinemammology #ecology #cetaceanresearch #Arctic #MarineEcology #Research #Science

Together with MSc student Oliver Nowak and local hunters, Fredrik Christiansen measured over 500 whales during March-June to investigate their prey consumption and condition.

Meanwhile, capturing jaw dropping wildlife footage 📷

🌐🌏🐋🧪

I would love to join this!

Weekend's work ☀️🦭

Deployment of satellite tags on animals has the advantage of the electronics doing the datasampling. Positions, dive depths and underwater 3D movements can be collected for days, weeks and even months.

In some cases larger data amounts are being sampled, and the amount of data is too large to transmit to a satellite. Instead, the floating tags need to be recovered after detaching from the animal.

Retrieving tags, unless they are being found by people on the beach, can be quite time-consuming. However, with the help from radio transmitters the access to important research data is a great reward for the invested time and logistics.

We are underway with the retrieval of detached data storage tags in the #WaddenSea 🇩🇰🦭

See photo captions and previous posts on our page for the building of retrievable tags and their deployment
@au.dk

#Science #biomonotoring #research #marineecology #marinemammalreasearch 🌐

Stable isotopes unveil ocean transport of legacy mercury into Arctic food webs - Nature Communications Mercury pollution in the Arctic has reached toxic levels. Here, the authors compile mercury isotope data from peat and aquatic predator species collected across Greenland over the past 40 years, obser...

🔊Paper out today with @nature.com!

Despite decreasing emissions 🌏 mercury levels are rising in some species. Hg Isotopes could reveal why.

Our new research shows ocean currents, may now be the main source of mercury in Arctic ecosystems. 🌐🧪🐻‍❄️🐋 @au.dk

#Arctic #Mercury #Greenland #MarineEcology

New release from the Arctic Monitoring and Assessment Programme on #Arctic #climatechange 🔊

Summary of record breaking events: 🧪
www.amap.no/documents/do...

thank you :) I was just in Aarhus with Saskia for a course day, we were talking about Bluesky then you and your winning Nature photo, so awesome!!

hej emma can I join this one :-)

My colleagues at AU ecoscience do amazing things with the Arctic Monitoring Assessment Program. AMAP constantly works to update reports on the status of a changing Arctic Environment. They also make readable summaries for policy makers, also informative and interesting for everyone.
www.amap.no

go.bsky.app/GvVGHgK
Those of us currently on BlueSky:

Hi Samantha!! Thanks I think so ;) and looks like you are doing amazing things too 😁

My first fieldwork activity in my new position at AU’s marine mammal research section! 🐻‍❄️🐬🦭@marinemammalsau.bsky.social