Photos > Blåskinsdal

Stream ecological studies on the invertebrate fauna in

Kobbeå

- a typical rift valley stream on the Danish island Bornholm in the Baltic Sea

  by Preben Kristensen pk@ringeby.dk

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9) On this picture PK is busy studying the fauna of the brook. As the valley is full covered with vegetation, no water plants are found in the brook.

 

8) Here and there there is free water, so that you can study the fauna. In the brook the relatively scarce trichoptera  Wormaldia occipitalis is filtering the water for tiny particles.

 

7) But if you listen very careful, you can hear the murmur of the brook.

 

6) The brook is almost 100 % covered with rocks, tree trunks and vegetation.

 

5) If you walk in upstream direction from the coast path, you enter the magical "Blåskinsdal" (= "blue shine valley" in translation). This is a very exciting place, full of mysticism!

 

4) On the damp rock along the waterfall is suitable locality for a hugropetrical fauna. And below the waterfall the population of Gammarus pulex is immense, as the animals can pass down the waterfall, but not in upward direction, so they accumulate.

3) At the shore the little brook ends in a waterfall.

 

2) You can find the outlet, if you pass a dense scrub towards the coast. The path is very steep and difficult to follow.

 

1) You find Blåskinsdalen at the coast path between Jons Kapel and Vang. All the pictures from Blåskinsdalen are captured 26.-28. september 2001.