Photos > Pissebæk

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) One more close-up of the damp moss ang algae covered "waterfall".

 

8) Many of the animals living here are typical inhabitants of the bank zone in larger streams, as eg. the beetle Anacaena globulus.

7) Here is the base of the waterfall, close up. The water is merely seeping through the moss ang algae.

6) - And here closer on. Even though Pissebæk often is having only a small flow, there are quite a few interesting species of invertebrates. Wormaldia occipitalis is abundant below the waterfall, and at least in the past one could find Philopotamus montanus.

5) The summer 2001 was dry. This and the following pictures was taken 7. august 2001.

The picture shows the waterfall from distance...

4) This is Pissebæk right upstream the waterfall. The picture is taken 2. november 2003 (just as picture 3).

3) There was not much water in the brook 2. november 2003. Notice the dark green "fur" on the rock. This is mosses and algae, giving good life conditions for the madicol invertebrates living there.  

2) On this picturetaken on 15-10-2001 the flow is considerably smaller.

1) The first time I visited  Pissebæk was a cold day in march 1984 together with my friend Stig Eilenberg on this picture.