mammal survey serra da estrela portugal - De Zoogdiervereniging

A benefit of this type of research is that many bat observations can be collected within a short period of time.Another interesting aspect is that one can get a good impression of the relative abundance or rareness ofcertain bat species.Disadvantages of this method however, are that it can only be applied where there are accessible (andtherefore often lamp lit) roads and that identification must be done very quickly. Consequently mistakes aremade more readily than with other detector-based methods. It is difficult to make recordings and analysethem on the spot, as passes are often quick and animals are heard for only a short period of time.The survey therefore was limited to species which are relatively easily identified: Pipistrellus pipistrellus,Pipistrellus kuhlii, Tadarida teniotis, Eptesicus serotinus, Nyctalus leisleri, Myotis myotis and Myotisdaubentonii. Other Myotis species were not identified, and observations of Myotis daubentonii were onlyaccepted when the identification of echolocation calls was supported by sightings of the animal, flying lowover the water.3 august 20092 august 20091 august 2009Map: Filipe Martins / CISEMap 2. Car transects.Mammal survey Serra da Estrela - Portugal 2009 15