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Djur (Fach) / Bats (Lektion)

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  • Explain their vulnerability. • low reproduction rate, one litter/a. • habitat loss due to opening of water sheds, large deciduous trees, deciduous tree edges etc. • loss of their wintering areas (ruins, burrows etc.)
  • Destinct bats? tragus, teeth, penius, finger length
  • year circle of bats • forming colonies in summer • hibernating solitary in winter • mating in August • active but solitary in April-May
  • Bats in Västerbotten? • Vattenfladdermus, Myotis daubentonii, Daubenton's bat (water, lakes)  • Mustaschfladdermus, Myotis mystacinus, Whiskered bat (forest, water) • Fransfladdermus, Myotis nattereri, Natterer's bat (culture landscape) • Trollfladdermus, Pipistrellus nathusii, Nathusius' pipistrelle (culture landscape, tree holes) • Stor fladdermus, Nyctalus noctula, Noctula bat (forest land) • Nordisk fladdermus, Eptesicus nilssonii, Northern bat (forest land) • Gråskimlig fladdermus, Vespertilio murinus, Parti-coloured bat (culture landscape) • Långörad fladdermus, Plecotus auritus, Brown long-eared bat (churches)
  • Bats close to water? • Vattenfladdermus, Myotis daubentonii, Daubenton's bat (water, lakes)  • Mustaschfladdermus, Myotis mystacinus, Whiskered bat (forest, water)
  • Bats connected to forest land? • Mustaschfladdermus, Myotis mystacinus, Whiskered bat (forest, water) • Stor fladdermus, Nyctalus noctula, Noctula bat (canopy) • Nordisk fladdermus, Eptesicus nilssonii, Northern bat (forest land)
  • Bats connected to Culture/cultural landscape? • Fransfladdermus, Myotis nattereri, Natterer's bat (culture landscape) • Trollfladdermus, Pipistrellus nathusii, Nathusius' pipistrelle (culture landscape, tree holes) • Gråskimlig fladdermus, Vespertilio murinus, Parti-coloured bat (culture landscape) • Långörad fladdermus, Plecotus auritus, Brown long-eared bat (churches)
  • Echolocation on bats. used for orientation but also for zooming in on prey, and mating. High frequency sound 20-75 kHz.
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