Information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (Pipistrellus pipistrellus Schreber) hibernaculum
Context. According to the current trend of biodiversity loss, information on population trends at large temporal and spatial scales is necessary. However, well documented animal population dynamics are generally based on intensive protocols requiring animal manipulation, which can be impossible to c...
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ftbioone:10.1071/WR14197 2024-06-02T08:13:20+00:00 Information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (Pipistrellus pipistrellus Schreber) hibernaculum Christian Kerbiriou Jean François Julien Sophie Monsarrat Philippe Lustrat Alexandre Haquart Alexandre Robert Christian Kerbiriou Jean François Julien Sophie Monsarrat Philippe Lustrat Alexandre Haquart Alexandre Robert world 2015-05-22 text/HTML https://doi.org/10.1071/WR14197 en eng CSIRO Publishing doi:10.1071/WR14197 All rights reserved. https://doi.org/10.1071/WR14197 Text 2015 ftbioone https://doi.org/10.1071/WR14197 2024-05-07T00:50:12Z Context. According to the current trend of biodiversity loss, information on population trends at large temporal and spatial scales is necessary. However, well documented animal population dynamics are generally based on intensive protocols requiring animal manipulation, which can be impossible to conduct in species for which conservation is a concern.Aims. For many bat species, an alternative approach entails performing an appropriate analysis of counts in roost cavities. Because of managers’ perception of chaotic variations through time, relatively few count monitoring surveys are regularly analysed. Here, we present the analysis of a twenty-two-year survey of a large hibernaculum of pipistrelle bats (Pipistrellus pipistrellus) located in a railway tunnel in Paris, France.Methods. We propose that using combinations of population-dynamics modelling using demographic parameters from the literature and statistical analyses helps with identifying the biological and methodological effects underlying the dynamics observed in census analyses.Key results. We determined that some of the observed year-to-year variations of population size cannot be explained only by the intrinsic dynamics of the population. In particular, in 1993–94, the population size increased by >40%, which should have implied a massive immigration. This change coincided with the end of the operation of the railway line. After consideration of a drastic trend of population decline (7% year–1), we were able to detect this event and several environmental effects. Specifically, the winter conditions and the temperature in July affected the colony size, presumably because of aggregative behaviour and reproduction success, respectively.Conclusions. Emigration–immigration processes might have preponderant effects on population dynamics. In addition, our analysis demonstrated that (1) the study population suffered a large decline, (2) a combination of human disturbance and meteorological variation explains these dynamics and (3) emigration–immigration ... Text Pipistrellus pipistrellus BioOne Online Journals Wildlife Research 42 1 35 |
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ftbioone |
language |
English |
description |
Context. According to the current trend of biodiversity loss, information on population trends at large temporal and spatial scales is necessary. However, well documented animal population dynamics are generally based on intensive protocols requiring animal manipulation, which can be impossible to conduct in species for which conservation is a concern.Aims. For many bat species, an alternative approach entails performing an appropriate analysis of counts in roost cavities. Because of managers’ perception of chaotic variations through time, relatively few count monitoring surveys are regularly analysed. Here, we present the analysis of a twenty-two-year survey of a large hibernaculum of pipistrelle bats (Pipistrellus pipistrellus) located in a railway tunnel in Paris, France.Methods. We propose that using combinations of population-dynamics modelling using demographic parameters from the literature and statistical analyses helps with identifying the biological and methodological effects underlying the dynamics observed in census analyses.Key results. We determined that some of the observed year-to-year variations of population size cannot be explained only by the intrinsic dynamics of the population. In particular, in 1993–94, the population size increased by >40%, which should have implied a massive immigration. This change coincided with the end of the operation of the railway line. After consideration of a drastic trend of population decline (7% year–1), we were able to detect this event and several environmental effects. Specifically, the winter conditions and the temperature in July affected the colony size, presumably because of aggregative behaviour and reproduction success, respectively.Conclusions. Emigration–immigration processes might have preponderant effects on population dynamics. In addition, our analysis demonstrated that (1) the study population suffered a large decline, (2) a combination of human disturbance and meteorological variation explains these dynamics and (3) emigration–immigration ... |
author2 |
Christian Kerbiriou Jean François Julien Sophie Monsarrat Philippe Lustrat Alexandre Haquart Alexandre Robert |
format |
Text |
author |
Christian Kerbiriou Jean François Julien Sophie Monsarrat Philippe Lustrat Alexandre Haquart Alexandre Robert |
spellingShingle |
Christian Kerbiriou Jean François Julien Sophie Monsarrat Philippe Lustrat Alexandre Haquart Alexandre Robert Information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (Pipistrellus pipistrellus Schreber) hibernaculum |
author_facet |
Christian Kerbiriou Jean François Julien Sophie Monsarrat Philippe Lustrat Alexandre Haquart Alexandre Robert |
author_sort |
Christian Kerbiriou |
title |
Information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (Pipistrellus pipistrellus Schreber) hibernaculum |
title_short |
Information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (Pipistrellus pipistrellus Schreber) hibernaculum |
title_full |
Information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (Pipistrellus pipistrellus Schreber) hibernaculum |
title_fullStr |
Information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (Pipistrellus pipistrellus Schreber) hibernaculum |
title_full_unstemmed |
Information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (Pipistrellus pipistrellus Schreber) hibernaculum |
title_sort |
information on population trends and biological constraints from bat counts in roost cavities: a 22-year case study of a pipistrelle bats (pipistrellus pipistrellus schreber) hibernaculum |
publisher |
CSIRO Publishing |
publishDate |
2015 |
url |
https://doi.org/10.1071/WR14197 |
op_coverage |
world |
genre |
Pipistrellus pipistrellus |
genre_facet |
Pipistrellus pipistrellus |
op_source |
https://doi.org/10.1071/WR14197 |
op_relation |
doi:10.1071/WR14197 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1071/WR14197 |
container_title |
Wildlife Research |
container_volume |
42 |
container_issue |
1 |
container_start_page |
35 |
_version_ |
1800736794451378176 |