Researcher, Seabird ecology and governance of marine resources
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Staff profile

Dr Martina Kadin, is a post-doctoral researcher at Stockholm Resilience Centre.

Martina combines field ecology with statistical models to build knowledge that can inform both conservation and use of natural resources. She has a broad interest in marine ecosystem services and governance of marine resources, particularly in the Baltic Sea region. Her other main area of interest is seabird population dynamics and behavioural ecology, with a specific focus on the effects of fisheries and fish stock dynamics.

Her current research evaluates indicators proposed for the Baltic Sea under the EU Marine Strategy Framework Directive. These indicators should ideally reflect the state of the sea's food-webs. By applying generalized additive models, including those allowing for threshold dynamics, Martina investigates how the indicators respond to environmental and anthropogenic pressures as well as the influence of species interactions.

Martina has a PhD in Natural Resource Management from Stockholm University. In her PhD work Martina focused on the interaction between seabirds and pelagic fish. Particularly, her research studied demographic processes, such as survival and reproductive success, as well as foraging strategies and chick provisioning. Using field data on the Common Murre Uria aalge, Martina investigated how these variables are impacted by changes in food abundance and food quality, which may be directly linked to fisheries targeting the same species but also indirectly when effects cascade through the food-web.

Martina's dissertation work included a review of ecosystem services provided by seabirds, and an investigation of changes in seabird ecosystem services over time. Her MSc thesis work was focused on sexual maturation and survival of immature Common Murres. Martina has developed her pedagogic skills from teaching assignments in biological statistics and marine ecology.

With a strong interest in statistics, Martina's main tools are statistical models such as generalized linear models, additive models and mixed models, as well as combinations of these. Another important method to her work is mark-recapture modelling of ringed birds, where she mainly works with multi-state models.

These models allow e.g. different causes of mortality to be modelled separately or survival rates to differ between sites and reproductive state. For example, certain fishing practices may result in birds drowning in fishing gear causing elevated mortality, and Martina aims to use these models to assess the influence of bycatch on Common Murre population viability. Martina's work on Common Murres forms a part of the research project Baltic Seabird (

Martina is also interested in how seabird studies can engage the public in the challenges our seas are facing, through approaches such as public lectures and popular science as well as participatory field studies and projects linking seabird ecology and art.

Peer-reviewed publications
Evans TJ, Kadin M, Olsson O, Åkesson S. 2013. Foraging behaviour of common murres in the Baltic Sea, recorded by simultaneous attachment of GPS and time-depth recorder devices. Mar Ecol Prog Ser 475:277-289

Hentati-Sundberg, J., Österblom, H., Kadin, M., Jansson, Å., Olsson, O. 2012. The Karlsö murre lab methodology can stimulate innovative seabird research. Marine Ornithology, 40, 11-16

Kadin M, Österblom H, Hentati-Sundberg J, Olsson O. 2012. Contrasting effects of food quality and quantity on a marine top predator. Mar Ecol Prog Ser 444:239-249

Österblom H, Sissenwine M, Symes D, Kadin M, Daw T, Folke C. 2011. Incentives, social–ecological feedbacks and European fisheries. Marine Policy 35:568-574

Reports and other publications
Best practices in fisheries management. 2009. 95 pp. Baltic Sea 2020 report.
Kadin, M. 2008. Trends and scenarios exemplifying the future of the Baltic Sea and Skagerrak - Ecological impacts of not taking action. 103 pp. Report 5875, Naturvårdsverket, Stockholm.
Auran, J. A., Høyland, T., Ekker, M., Kadin, M., Skjærbæk Rasmussen, K., Mosbeck, A., Dam, M., Jensen, J-K., Byrkjeland, S. 2008. Påvirkningsfaktorer og bevaringstiltak. Chapter 3 in "Vest-Nordiske sjøfugler i et presset havmiljø". 100 pp. TemaNord 2008:573, Nordic Council of Ministries, Copenhagen.

Kadin, M. 2007. Post-fledging survival and sexual maturation in Common guillemots Uria aalge - The influence of biological and ecological factors. Degree project thesis 2007:19, Department of Systems Ecology, Stockholm University.


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Stockholm Resilience Centre

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