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Home range size of Tengmalm’s owl during breeding in Central Europe is determined by prey abundance

Animal home ranges typically characterized by their size, shape and a given time interval can be affected by many different biotic and abiotic factors. However, despite the fact that many studies have addressed home ranges, our knowledge of the factors influencing the size of area occupied by differ...

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Autores principales: Kouba, Marek, Bartoš, Luděk, Tomášek, Václav, Popelková, Alena, Šťastný, Karel, Zárybnická, Markéta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436666/
https://www.ncbi.nlm.nih.gov/pubmed/28545112
http://dx.doi.org/10.1371/journal.pone.0177314
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author Kouba, Marek
Bartoš, Luděk
Tomášek, Václav
Popelková, Alena
Šťastný, Karel
Zárybnická, Markéta
author_facet Kouba, Marek
Bartoš, Luděk
Tomášek, Václav
Popelková, Alena
Šťastný, Karel
Zárybnická, Markéta
author_sort Kouba, Marek
collection PubMed
description Animal home ranges typically characterized by their size, shape and a given time interval can be affected by many different biotic and abiotic factors. However, despite the fact that many studies have addressed home ranges, our knowledge of the factors influencing the size of area occupied by different animals is, in many cases, still quite poor, especially among raptors. Using radio-telemetry (VHF; 2.1 g tail-mounted tags) we studied movements of 20 Tengmalm’s owl (Aegolius funereus) males during the breeding season in a mountain area of Central Europe (the Czech Republic, the Ore Mountains: 50° 40’ N, 13° 35’ E) between years 2006–2010, determined their average hunting home range size and explored what factors affected the size of home range utilised. The mean breeding home range size calculated according to 95% fixed kernel density estimator was 190.7 ± 65.7 ha (± SD) with a median value of 187.1 ha. Home range size was affected by prey abundance, presence or absence of polygyny, the number of fledglings, and weather conditions. Home range size increased with decreasing prey abundance. Polygynously mated males had overall larger home range than those mated monogamously, and individuals with more fledged young possessed larger home range compared to those with fewer raised fledglings. Finally, we found that home ranges recorded during harsh weather (nights with strong wind speed and/or heavy rain) were smaller in size than those registered during better weather. Overall, the results provide novel insights into what factors may influence home range size and emphasize the prey abundance as a key factor for breeding dynamics in Tengmalm’s owl.
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spelling pubmed-54366662017-05-27 Home range size of Tengmalm’s owl during breeding in Central Europe is determined by prey abundance Kouba, Marek Bartoš, Luděk Tomášek, Václav Popelková, Alena Šťastný, Karel Zárybnická, Markéta PLoS One Research Article Animal home ranges typically characterized by their size, shape and a given time interval can be affected by many different biotic and abiotic factors. However, despite the fact that many studies have addressed home ranges, our knowledge of the factors influencing the size of area occupied by different animals is, in many cases, still quite poor, especially among raptors. Using radio-telemetry (VHF; 2.1 g tail-mounted tags) we studied movements of 20 Tengmalm’s owl (Aegolius funereus) males during the breeding season in a mountain area of Central Europe (the Czech Republic, the Ore Mountains: 50° 40’ N, 13° 35’ E) between years 2006–2010, determined their average hunting home range size and explored what factors affected the size of home range utilised. The mean breeding home range size calculated according to 95% fixed kernel density estimator was 190.7 ± 65.7 ha (± SD) with a median value of 187.1 ha. Home range size was affected by prey abundance, presence or absence of polygyny, the number of fledglings, and weather conditions. Home range size increased with decreasing prey abundance. Polygynously mated males had overall larger home range than those mated monogamously, and individuals with more fledged young possessed larger home range compared to those with fewer raised fledglings. Finally, we found that home ranges recorded during harsh weather (nights with strong wind speed and/or heavy rain) were smaller in size than those registered during better weather. Overall, the results provide novel insights into what factors may influence home range size and emphasize the prey abundance as a key factor for breeding dynamics in Tengmalm’s owl. Public Library of Science 2017-05-18 /pmc/articles/PMC5436666/ /pubmed/28545112 http://dx.doi.org/10.1371/journal.pone.0177314 Text en © 2017 Kouba et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Kouba, Marek
Bartoš, Luděk
Tomášek, Václav
Popelková, Alena
Šťastný, Karel
Zárybnická, Markéta
Home range size of Tengmalm’s owl during breeding in Central Europe is determined by prey abundance
title Home range size of Tengmalm’s owl during breeding in Central Europe is determined by prey abundance
title_full Home range size of Tengmalm’s owl during breeding in Central Europe is determined by prey abundance
title_fullStr Home range size of Tengmalm’s owl during breeding in Central Europe is determined by prey abundance
title_full_unstemmed Home range size of Tengmalm’s owl during breeding in Central Europe is determined by prey abundance
title_short Home range size of Tengmalm’s owl during breeding in Central Europe is determined by prey abundance
title_sort home range size of tengmalm’s owl during breeding in central europe is determined by prey abundance
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436666/
https://www.ncbi.nlm.nih.gov/pubmed/28545112
http://dx.doi.org/10.1371/journal.pone.0177314
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