Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Richard Policht"'
Autor:
Klára Košinová, Richard Policht, Ondřej Matějka, Vladimír Hanzal, Miloš Ježek, Tomáš Kušta, Vlastimil Hart
Publikováno v:
Journal of Forest Science, Vol 68, Iss 2, Pp 61-71 (2022)
Wild boar (Sus scrofa L.) is one of the most discussed game species, distributed across Europe, therefore the management of this species is considered important. This management should be based on data presented, population quality and preferences an
Externí odkaz:
https://doaj.org/article/d677d6948cc34db2927138cd81e117b7
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract Previous studies have shown that vocalizations of dogs can provide information to human companions. While acoustic signals of dogs have been intensively studied during the last decade, barking during hunting activities remains unstudied. The
Externí odkaz:
https://doaj.org/article/850c2cfb47084716bf75109535673d45
Publikováno v:
Animals, Vol 13, Iss 11, p 1844 (2023)
The black grouse is a species whose population development requires constant monitoring due to a rapidly declining trend, especially in Central Europe. Variability in the voices of geographically separated populations can aid in counting within indiv
Externí odkaz:
https://doaj.org/article/56519060bf934cf492e3377c8612e950
Autor:
Richard Policht, Vlastimil Hart
Publikováno v:
Animals, Vol 13, Iss 4, p 765 (2023)
Individually distinct acoustic signals, produced mainly as tonal and harmonic sounds, have been recorded in many species; however, non-tonal ‘noisy’ signals have received little attention or have not been studied in detail. The capercaillies (Tet
Externí odkaz:
https://doaj.org/article/f339a61c13ac47ab9759888423422dd0
Publikováno v:
PeerJ, Vol 9, p e11837 (2021)
Acoustic individuality may well play a big role during the mating season of many birds. Black grouse (Lyrurus tetrix) produces two different long-distance calls during mating on leks: rookooing and hissing calls. The first one represents low frequenc
Externí odkaz:
https://doaj.org/article/3a0fe3d7562745b7ad49b3f5b1102dd3
Publikováno v:
Royal Society Open Science, Vol 8, Iss 2 (2021)
Based on their phylogenetic position, Nearctic ground squirrels are closest relatives to the long-tailed ground squirrel Urocitellus undulates even though it has Palaearctic distribution. We aimed to investigate the variability of alarm calls of the
Externí odkaz:
https://doaj.org/article/c59e8cc1d69844e68a157465c3a571c9
Publikováno v:
PeerJ, Vol 8, p e9189 (2020)
Only a few bird species are known to produce low-frequency vocalizations. We analyzed the display vocalizations of Western Capercaillie males kept in breeding centers and identified harmonically structured signals with a fundamental frequency of 28.7
Externí odkaz:
https://doaj.org/article/b85ffd011e52419ead6c390857c67fb8
Autor:
Richard Policht, Vlastimil Hart, Denis Goncharov, Peter Surový, Vladimír Hanzal, Jaroslav Červený, Hynek Burda
Publikováno v:
PeerJ, Vol 7, p e6533 (2019)
Corvids count among the important predators of bird nests. They are vocal animals and one can expect that birds threatened by their predation, such as black grouse, are sensitive to and recognize their calls. Within the framework of field studies, we
Externí odkaz:
https://doaj.org/article/4668f458116a4ddcbf6068e86981da4a
Autor:
Ivana Cinková, Richard Policht
Publikováno v:
PLoS ONE, Vol 9, Iss 6, p e98475 (2014)
Inter-individual relationships particularly in socially living mammals often require a well-developed communication system. Vocal and olfactory signals are the most important for the communication of rhinos, however, their vocal communication has bee
Externí odkaz:
https://doaj.org/article/c99530ed517d47b8bc35f96482f9b9ac
Autor:
Céline Tallet, Pavel Linhart, Richard Policht, Kurt Hammerschmidt, Petr Šimeček, Petra Kratinova, Marek Špinka
Publikováno v:
PLoS ONE, Vol 8, Iss 8, p e71841 (2013)
Two important questions in bioacoustics are whether vocal repertoires of animals are graded or discrete and how the vocal expressions are linked to the context of emission. Here we address these questions in an ungulate species. The vocal repertoire
Externí odkaz:
https://doaj.org/article/615b8a2fbc4548c7a294b1d58e4de095