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Bat assemblages in the Nietoperek bat reserve (Western Poland) and their conservation strategies

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dc.contributor Universitat de Vic. Escola Politècnica Superior
dc.contributor.author Torrent Alsina, Laura
dc.date.accessioned 2014-09-29T08:04:27Z
dc.date.available 2014-09-29T08:04:27Z
dc.date.created 2014-09-17
dc.date.issued 2014-09-17
dc.identifier.uri http://hdl.handle.net/10854/3312
dc.description Curs 2013-2014
dc.description.abstract Międzyrzecz Fortified Front, were Natura 2000 site PLH080003 Nietoperek is situated, was built by the Germans in the 1930s and during the World War II. It is composed of above ground bunkers connected by underground tunnels of ca. 32 km total length. Nietoperek is the eighth largest bats hibernation site in EU. Monthly censuses were carried out from October to April during three consecutive winter seasons (2011/12 – 2013/14) in area covering ca. 30% of the undergrounds. The aims of the study were: (1) to describe changes in numbers of each species in the course of hibernation season, (2) to suggest deadlines for counting particular bat species to obtain maximal numbers and (3) to describe negative impact of tourism on hibernating bats. The results will be useful for restriction of winter tourism in Nietoperek. The total number of bats observed during the study was 37869 individuals of 9 species. Because of difficulties in distinguishing without handling M. mystacinus and M. brandtii were treated as one group. M. myotis constituted from 53% (first season) to 64% (last season) of all hibernating bats. The maximal numbers of individuals were observed in November (first two seasons) and in December (third season). M. daubentonii constituted from 27% (first season) to 21% (last season) and M. nattereri from 10% (first season) to 11% (second season) of all bats. During the three seasons the maximal numbers of M. daubentonii and M. nattereri were observed in November and December respectively. B. barbastellus and P. auritus constituted from 4% (first season) to 2% (last season) of the multi species colony. The maximal numbers of B. barbastellus were observed in January and P. auritus in January (first and second seasons) and in December (third season). Results indicated that the best period for counting maximal numbers of M. myotis and M. daubentonii is November, for M. nattereri is December and for B. barbastellus and P. auritus is January. The study undertaken in the part visited by tourists in winter (total length of 900 m) proved negative effect caused by human disturbance with 23% decline of total bat numbers. ca_ES
dc.format application/pdf
dc.format.extent 71 p. ca_ES
dc.language.iso eng ca_ES
dc.rights Aquest document està subjecte a aquesta llicència Creative Commons ca_ES
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ca_ES
dc.subject.other Ratapinyades -- Conservació ca_ES
dc.subject.other Ratapinyades -- Hibernació ca_ES
dc.title Bat assemblages in the Nietoperek bat reserve (Western Poland) and their conservation strategies ca_ES
dc.type info:eu-repo/semantics/bachelorThesis ca_ES
dc.rights.accesRights info:eu-repo/semantics/openAccess ca_ES

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