Interview: "Studying the transport of nitrogen in deglaciated valleys helps us to understand the impact of retreating glaciers on biogeochemical cycles"

In this interview, iC3 intern Amélie Patillaut describes her research on biogeochemical cycles and nitrogen mobilization in the Lyngen Alps of Arctic Norway.

Can you briefly describe yourself and the focus of your research?

My name is Amélie Patillaut, I’m a masters student from the University of Toulon in France currently doing an internship at iC3 in collaboration with postdoc Laura Ramussen.

At iC3, My research focuses on the transport of nitrogen species during freeze-thaw cycles in a proglacial valley. Specifically, I analyze the nitrogen and carbon concentrations of river water, snow, and soil in the valley of the Steindal Glacier in Lyngen Alps, Norway.

Credit: Laura Rasmussen

Why is it important to study that?

Because of global warming, the biogeochemical cycle of nitrogen is disrupted. This can impact ecosystems like lakes and fjords.

I'm studying how this compound is transported from deglaciated areas to rivers and fjords. Understanding this movement of nitrogen is important for anticipating the trajectory of these ecosystems in the face of accelerating environmental change.

How are you conducting your study?

We have sampled river water, snow, and soil at different locations in the Steindal Glacier valley. In the field, I filtered water samples and prepared soil and snow samples for analysis.

Back in the lab, I measured total nitrogen and total organic carbon, as well as nitrate and ammonium concentrations, using instruments such as the Seal and Shimadzu analyzer. I also prepare samples for isotope analysis, which provides additional insights into nitrogen sources.

Credit: Laura Rasmussen

Why is the Steindal Glacier valley a significant field site for this study?

The glacier has changed significantly over the past 50 years due to global warming. Studying this area helps us understand how retreating glaciers affect the nitrogen cycle and the environments downstream.

It’s a unique and accessible location to observe these changes, and the transition from ice to growing vegetation makes it a perfect natural lab to observe long-term environmental changes.

What is your academic background, and how did it lead to this research?

I’m a masters student in marine science, specializing in environmental and analytical chemistry at the University of Toulon. I started with a bachelor’s degree in organic chemistry at the University of Tours but shifted to environmental studies to focus on understanding global warming and cold environments in the field. 

During my masters, I gained field experience in marine campaigns and sediment studies. I completed a first-year masters internship in Trondheim, devoted to the geochemical study of cryoconites to assess the influence of long-range atmospheric transport of mercury on Arctic glaciers in Svalbard. This experience confirmed my desire to continue in the field of polar geochemistry.

What fieldwork or campaigns have been particularly memorable?

During a research mission, we set sail from the Toulon bay. We headed into the open sea to measure the water using a CTD sensor. Our goal was to study the water’s biogeochemical structure by looking at four things: dissolved oxygen, organic carbon, suspended matter, and chlorophyll a.

Beyond science, it was a great human experience. On the ship, we worked with physicists, chemists, and biologists. We also lived alongside engineers, sailors, and cooks. Everyone shared their own life stories, sea tales, and skills. It is a wonderful memory for me.

What technologies or methodologies excite you the most?

During the fieldwork with Laura, we had to use a drill to take samples from the frozen lake. I really enjoyed it. It's physically demanding, but it warms you up, and when you see the water coming out, it's so satisfying.

Credit: Laura Rasmussen

Where do you see yourself after this internship?

My dream is to work in Antarctica with the The French Polar Institute Paul-Émile Victor. For me, Antarctica is the ultimate environment for understanding extreme conditions and thus understanding the other pole. 

Alternatively, I’d like to become a field or research engineer, possibly pursuing a PhD later, if a subject fascinates me.

Do you miss something from your country while being here in Norway?

I miss the cheese of course!

What does an ideal day off look like for you?

If I’m in Norway, I'd love to hike to a cabin and enjoy the beautiful landscapes. If I’m in France, I'd go to the sea, scuba dive, or kayak, just enjoying nature with people I like.

Do you have any hobbies or activities you’d like to share?

I love photography, especially monochrome photography or candid pictures of people. It makes me happy when people love the photos I take of them.

Could you share a book or documentary that has influenced you?

Growing up, I often watched Thalassa with my parents. It probably helped awaken my curiosity about marine sciences.

I also enjoy reading philosophical books, such as those by Hermann Hesse or Frédéric Lenoir. It allows me to discover other ways of understanding society and human behavior, and to take a step back from my own way of seeing things.

Do you have a motto or final words to share?

Live your life and be happy!

Amélie Patillaut is an iC3 intern at UiT The Arctic University of Norway in Tromsø. To find out more about her work, contact her via LinkedIn. 

If you are interested in conducting your masters thesis project at iC3, please take a look at the potential projects listed here. If you cannot find anything suitable, please contact iC3manager@uit.no.