The land uplift reveals new land that is waiting to be discovered by flaura and fauna. Who does take over the new islets first, sea buckthorn or some bird?
Vegetation reveals the Age of the land
The vegetation follows the land rising from the sea, and you can explore the land uplift forests, or primary forests, almost anywhere in the World Heritage area. On the shorelines thrive sea buckthorn bushes, willows and alders. Further from the shore grow birches, rowans and aspens. When the land has been above the sea level long enough, spruces start to appear. The primary forests’ soil was exposed from underneath the sea floor about 1000 years ago.
The lagoons of the Kvarken
Flads and glo lakes are the unique lagoons of the Kvarken. A flad is a partially closed off sea bay that is still connected to the sea but its water has already started to become fresh. In glo lakes the connection to the sea is nearly closed and sea water no longer enters the lake except when there is a strong wind or the water level is high. When the connection to the sea is completely closed, the glo lake turns into a more common inland lake.
Flads are a very good home for the baby fish because of the warm and nutritious waters. The fish spawning run is a popular and fun attraction each spring. You can observe this spring spectacle along Bodvattnet nature trail in Björköby. For a few weeks the streams and brooks are buzzing, as first pike, then perch, and finally, roach rush towards the warm and safe glo lakes. The spawning run is usually timed between mid April and the early weeks of May.
Dive below the surface
When standing on the shore of a flad one would never be able to believe what fascinating scenery awaits beneath the surface. In the underwater jungle, the fennel pondweed, perfoliate ponweed and watermilfoils extend to the sun’s rays at the surface. Between the vegetation swim perch, roach, pike and ide.
Kingdom of the birds
The soundscape of the Kvarken Archipelago only really quietens down for the winter. The area’s birdlife is abundant, rich and noisy. In the Kvarken, over three hundred different species of birds are encountered, of which about half breed in the area regularly. Therefore it is no wonder that narrow Kvarken is also a bird watchers’ paradise. Many of the islands are located in a bird protection area and they are also important breeding grounds for many endangered species.
White-tailed eagle is the king of the archipelago and Finland’s largest predatory bird. Sea eagles can have a wingspan of of over two meters, they can weigh up to seven kilos and have a length over a meter. They can live up to 40 years, and the oldest eagles around these parts have been well over 20 years old.