Species interactions

Picture Seppo Leinonen www.seppo.net
Picture Seppo Leinonen www.seppo.net

The main focus of our research is in facilitative and competitive interactions that take place in wetlands. The main facilitators in boreal wetlands are beavers, which profoundly affect habitat with their ecological engineering. Their way of wetland alteration include changes in hydrology, material flow, and wetland morphology which result in changes in plant and animal diversity and abundance.

American beaver at Evo researh area. © Sari Holopainen
American beaver at Evo researh area. © Sari Holopainen

The beaver acts as a whole-community facilitator for invertebrate eating waterbirds and benefits e.g. bats and frogs.

By damming lakes and sterams ecosystem engineer, the beaver, creates diverse habitats for many other animal groups. © Sari Holopainen
By damming lakes and streams ecosystem engineer, the beaver, creates diverse habitats for many other animal groups. © Sari Holopainen

A 3D model of a beaver wetland in our research area Evo. The structure of beaver wetlands is very versatile, and creates suitable habitats for several other species.

Evon Viljaskorpi
by anttijuhani
on Sketchfab

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Competitive interactions in our studies consist mainly on fish-duck relations. In structurally simple boreal waters, the effect of especially perches on ducks can be considerable. This information is essential to take into account when managing wetlands for waterbirds.

Pearch (Perca fluviatilis) competes with the Goldeneye (Bucephala clangula) © Veli-Matti Väänänen
Pearch (Perca fluviatilis) competes with the Goldeneye (Bucephala clangula) © Veli-Matti Väänänen

 

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