Research

The Archipelago Research Institute participates in multidisciplinary research of the Baltic Sea, with a special focus on the Archipelago Sea. Most research is done in collaboration between several research groups and stakeholders but the staff actively conduct their own research as well. Below you’ll find more information on our long-term environmental monitoring programs, current research projects and publications.

Environmental monitoring

Environmental and at-sea monitoring has been conducted at Seili by the Institute, together with several stakeholders, since 1966. Thanks to these long-running programs, the Institute nowadays has several data sets that extend back over 50 years. The time series aid researches for example to understand for example climate-induces environmental changes in the northern Baltic ecosystem.

>>metadata of currently running monitoring programs

Research projects

Research projects of the Archipelago Research Institute

Selected examples


Habitat selection and the frequency of tick-borne diseases (Lyme disease and tick-borne encephalitis) of Ixodes -ticks in the Archipelago Sea

The aim of the study is to determine the occurence and frequency of the most common tick species (Ixodes ricinus) in Finland. The research identifies ticks favored habitats with associated environmental conditions during summer. In addition, the developmental stages of ticks will be examined with PCR analysis for better identification (bardcoding) of tick types and to identify potential Lyme disease (Borrelia burgdorferi s.l.) and tick-borne encephalitis carriers.

The study is conducted in cooperation with the Section of Ecology (Department of Biology), Zoological Museum (Department of Biodiversity) and Faculty of Medicine of the University of Turku.

More information about the project here and at Ticks in Southwest Finland -website (in Finnish).


The future of the Baltic Sea and us: the effects of climate change to the Baltic Sea pelagic ecosystem

The purpose of the project is to provide information on ecological  and biochemical changes that can be expected in the Baltic Sea pelagic ecosystem if the current sea stagnation continues and/or climate change is progressing to increased precipitation in the Baltic watershed area.

The study is conducted in cooperation with Food Chemistry and Food Development, University of Turku.

Baltic herring research

Research on the reproductive biology of Baltic herring was started at the Archipelago Research Institute and the Department of Biology in the beginning of the 1980’s. Since that, herring research has continued in the form of several scientific and monitoring projects that have been carried out in the Archipelago Sea area where one of the major herring reproductive areas is situated.

Read more about the projects on the Herring Project’s webpage.


Earlier research projects are listed in the Institute’s collected publications and collected reprints.

Collected publications

SEILI Archipelago Research Institute Publications -series

Selected examples

Rajasilta, M., Eklund, J., Laine, P., Jönsson, N., Lorenz, T.2006. Intensive monitoring of spawning populations of the Baltic herring (Clupea harengus membras L.). Final report of the study project ref. No 96-068, 1997-1999. SEILI Archipelago Research Institute Publications 3. ISBN 951-29-3047-1. Report (pdf).

Hänninen J., Toivonen R., Vahteri P., Vuorinen I., Helminen H. 2007. Environmental factors shaping the littoral biodiversity in the Finnish archipelago, northern Baltic, and the value of low Biodiversity.  SEILI Archipelago Research Institute Publications 4. Pdf.

Rajasilta, M. & Vuorinen, I. 2008. Identification manual for northern Baltic Sea zooplankton species (In Finnish). SEILI Archipelago Research Institute Publications 5. 66 s. ISBN 978-951-29-3829-2. Pdf.

Theses provided or contributed by the Institute

Collaboration network

More information

Jari Hänninen Johtaja, Apulaisprofessorijarhan@utu.fi+358 29 450 2241
Katja Mäkinen Tutkimusteknikko, FTkamaki@utu.fi+358 29 450 3705