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| Description
| - The changes in echolocation behaviour and the structure of calls of Pipistrellus pygmaeus (Leach, 1825) were studied in different habitats of a floodplain forest in south-eastern Moravia (Czech Republic) in 20012002. Calls (403 observations) were recorded in different sites between April and mid June (before weaning) using a time expansion bat-detector. Three signals per individual were analysed and descriptive statistics of variables of calls were presented. Association of signal types with habitat structure (cluttered, sidecluttered, semi-cluttered and uncluttered space) was found in echolocation sequences of the search phase of flight. P. pygmaeus used mainly narrowband signals (bandwidths less than 15 kHz) in uncluttered space and wideband signals (more than 15 kHz) in cluttered space. Almost 6% of the inter pulse intervals of signals were twice (or more) longer than usual inter pulse intervals (mainly in uncluttered space). In general, temporal variables of signals reached higher values in unclut
- The changes in echolocation behaviour and the structure of calls of Pipistrellus pygmaeus (Leach, 1825) were studied in different habitats of a floodplain forest in south-eastern Moravia (Czech Republic) in 20012002. Calls (403 observations) were recorded in different sites between April and mid June (before weaning) using a time expansion bat-detector. Three signals per individual were analysed and descriptive statistics of variables of calls were presented. Association of signal types with habitat structure (cluttered, sidecluttered, semi-cluttered and uncluttered space) was found in echolocation sequences of the search phase of flight. P. pygmaeus used mainly narrowband signals (bandwidths less than 15 kHz) in uncluttered space and wideband signals (more than 15 kHz) in cluttered space. Almost 6% of the inter pulse intervals of signals were twice (or more) longer than usual inter pulse intervals (mainly in uncluttered space). In general, temporal variables of signals reached higher values in unclut (en)
- Variabilita signálů je nejnižší v otevřeném biotopu. Srovnatelná avšak vysoká vnitřní variabilita byla zaznamenána v biotopech zapojených nebo částečně zapojených. Ukazuje se, že boční zápoj v těchto biotopech má výraznější vliv na variabititu signálu než odraz od země, který jako jediný mohl ovlivňovat signály v otevřeném prostoru. Netopýři nepřijímají informace pouze ze směru přímo před hlavou, ale také z boku nebo nad a pod osou. Tedy na strukturu signálů mají vliv nejen velké objekty před hlavou netopýra, ale i ty mimo tento směr. Rozdílnost parametrů signálů ovlivněných efektem bočního zápoje mohou souviset také s přibližováním se netopýra k vlastním vertikálním strukturám. Zjistili jsme, že délkové parametry vykazovaly vyšší variabilitu než parametry frekvenční a tedy lépe odrážely strukturu loveckého biotopu. Můžeme říci, že netopýři v zapojeném biotopu obecně používali kratší délkové parametry (vyjímkou je interval mezi signály) a nižších frekvenčních parametrů. P. pygmaeus vysílá v otevřeném (cs)
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| Title
| - Variability in echolocation calls of Pipistrellus pygmaeus (Chiroptera: Vespertilionidae) during search flight in different habitats
- Variability in echolocation calls of Pipistrellus pygmaeus (Chiroptera: Vespertilionidae) during search flight in different habitats (en)
- Variabilita echolokačních signálů druhu Pipistrellus pygmaeus (Chiroptera: Vespertilionidae) vysílaných během vyhledávací fáze v různých biotopech (cs)
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| skos:prefLabel
| - Variability in echolocation calls of Pipistrellus pygmaeus (Chiroptera: Vespertilionidae) during search flight in different habitats
- Variability in echolocation calls of Pipistrellus pygmaeus (Chiroptera: Vespertilionidae) during search flight in different habitats (en)
- Variabilita echolokačních signálů druhu Pipistrellus pygmaeus (Chiroptera: Vespertilionidae) vysílaných během vyhledávací fáze v různých biotopech (cs)
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| skos:notation
| - RIV/00216224:14310/05:00012542!RIV06-GA0-14310___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00216224:14310/05:00012542
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Pipistrellus pygmaeus; signal parameters; habitat structure; bat identification (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Řehák, Zdeněk
- Bartonička, Tomáš
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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