Lucille Buchenhorst

Lucille Buchenhorst

Research Assistant

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Works at Department of Ecology, Environment and Plant Sciences
Visiting address Svante Arrhenius väg 20 A
Postal address Institutionen för ekologi miljö och botanik 106 91 Stockholm

About me

I am a research assistant, working together with Susanne Kratzer with focus on bio-optical measurements and analysis of the Baltic Sea and Lake Vänern as well as optical inter-comparisons with the Swedish marine monitoring groups.

I have completed a M. Sc. in Ecology, Evolution and Conservation at the University of Potsdam, Germany. The focus of my Master´s project was on biogeochemical cycling in Canadian prairie lakes which I conducted at the University of Regina, Canada. I completed my B.Sc. in Landscape-planning at the Technical University of Berlin, Germany, where I focused on aquatic ecology and ecotoxicology. My interest lies in using different statistical analyses and models, and I also have experience with programs such as ArcGIS, InDesign, SPSS, R and the Microsoft Office programs.


My background has given me knowledge to understand processes on a macro-scale and connect these with processes on a micro-scale. I have mostly focused on nitrogen (N) transformations during winter on a large-scale in the Northern Great Plains (Canada), which are limited in N and also affected by eutrophication. The N-cycle is not so well studied as the C-cycle, although changes in the N-cycle due to both fertilizer run-off and climate change affect the carbon budget and greenhouse gas (GHG) production, leading to shifts in the source-sink-dynamics of aquatic ecosystems.

In the Baltic proper nitrogen is also a limiting nutrient, which is why filamentous cyanobacteria are so dominant during the summer season as they are able to fix nitrogen from the atmosphere, and some strains may even be toxic. In order to solve environmental problems such as eutrophication and pollution, monitoring and management of the Baltic Sea are important. Monitoring techniques develop rapidly and in the last decades satellites have become more and more important. For example, the Sentinel-3 mission of the European Space Agency (ESA) is dedicated towards monitoring the global seas, lakes and oceans and Sentinel-3 has been operational since 2016. The mission is planned to continue at least until 2030 and is a follow-up of the previous MERIS-Envisat mission (2002-2012). Combined, these missions will provide unprecedented information about the ecological status of our lakes, seas and oceans.

My current focus is on using and implementing bio-optical methods for the validation of satellite data (see Figure below).  Both approaches combined help to understand large-scale processes e.g. in the Swedish Great Lake Vänern and the Baltic Sea. Ocean colour research provides an approach to optimize observations of the ecosystem health and to improve predictions of future changes. By doing inter-calibrations with large monitoring campaigns, we can develop harmonized and standardized protocols and methods that lead to improved monitoring and easier evaluation of the water quality and well-being of our aquatic ecosystems.  The work is funded by the Swedish Agency for Marine and Water Management (SwAM) and by the Swedish National Space Agency (Vänern project).

Reference: Kratzer, S. 2000. Bio-optical Studies of Costal Waters. PhD Thesis, monograph, School of Ocean Sciences, University of Wales, Bangor, UK, 190 pp.

Here you can find out more about Ocean Colour research at Stockholm University: Susanne Kratzer's web page



Last updated: September 8, 2020

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