Proceedings Anniversary Event – 10 International Alpine Workshop ...

5.2 RESEARCH PROGRAMME ANIMAL ECOLOGY (NORBERT GROSSER)
We continue recording animal fauna of Tagliamento area in the different investigation
areas (see Fig. 18 & 36) from the last years in this short aspect of beginning summer.
Investigation will comprise the following animal groups:
- Butterflies and moths
- Grasshoppers
- Dragonflies
- Amphibians and reptiles
- Additionally snails, birds and mammals according to their biodiversity and existence of
key species in river and adjacent habitats
Because there is no identity between zoocoenoses, biotop types and vegetation units the
investigation of fauna will be separated from the single habitat investigation and a
combined transect method across all habitat-types in a defined river section will be used.
Zoocoenoses are connected with habitats either by trophical relations between plants and
animals, structural relations, microclimate in a habitat or successional stages of vegetation
(indirectly), biotopnetwork and migration ability.
Methods are:
- Transect mapping (visual and acoustic observation)
- Capture of insects with different nets and other methods (release after determination)
- Observation of nocturnal active insects at light (in the surroundings of Cornino)
- Exhaustor (in connection with investigation of soil substrates)
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