Circadian activity of small brown bear populations living in human-dominated landscapes
Whereas numerous studies on large carnivores have focused on analyzing spatial patterns and habitat use, the temporal dimension of their activity has been relatively little investigated, making this a topic of growing interest, especially in human-dominated landscapes. Relict and isolated Apennine b...
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ftunivromairis:oai:iris.uniroma1.it:11573/1666206 2024-02-27T08:46:06+00:00 Circadian activity of small brown bear populations living in human-dominated landscapes Donatelli, Aurora Mastrantonio, Gianluca Ciucci, Paolo Donatelli, Aurora Mastrantonio, Gianluca Ciucci, Paolo 2022 https://hdl.handle.net/11573/1666206 https://doi.org/10.1038/s41598-022-20163-1 eng eng Nature Publishing Group place:London info:eu-repo/semantics/altIdentifier/pmid/36138081 info:eu-repo/semantics/altIdentifier/wos/WOS:000859183800054 volume:12 issue:1 firstpage:1 lastpage:11 numberofpages:11 journal:SCIENTIFIC REPORTS https://hdl.handle.net/11573/1666206 doi:10.1038/s41598-022-20163-1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85138439425 info:eu-repo/semantics/openAccess Apennine brown bear Bayesian model circadian activity movement rate Ursos arctos info:eu-repo/semantics/article 2022 ftunivromairis https://doi.org/10.1038/s41598-022-20163-1 2024-01-31T17:41:04Z Whereas numerous studies on large carnivores have focused on analyzing spatial patterns and habitat use, the temporal dimension of their activity has been relatively little investigated, making this a topic of growing interest, especially in human-dominated landscapes. Relict and isolated Apennine brown bears (Ursus arctos marsicanus) have been living in a human-modified landscape since millennia, but no information is available on their activity patterns. By means of GPS telemetry (26,880 GPS locations collected from 18 adult Apennine brown bears) we investigated their circadian rhythms, using hourly movement rates as an index of bear activity. Based on a Bayesian modeling approach, circadian activity of Apennine brown bears was described by a bimodal curve, with peaks of activity around sunrise and sunset. We revealed seasonal effects, with bears exhibiting higher movement rates throughout the mating season, but no relevant influence of sex. In addition, bears increased their movement rate at distances < 100-500m to roads and settlementsexclusivelyduring spring and late summer, suggesting a trade-off between foraging opportunities and risk avoidance. The absence of a marked nocturnality in Apennine brown bears suggests a relatively low degree of habitat encroachment and disturbance by humans. Yet, the occurrence of crepuscular activity patterns and the responses in proximity of anthropogenic landscape features likely indicate a coadaptation by bears to human presence through a shift in their temporal niche. Further studies should aim to unveil fitness implications of such modifications in activity patterns. Article in Journal/Newspaper Ursus arctos Sapienza Università di Roma: CINECA IRIS Scientific Reports 12 1 |
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Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
Apennine brown bear Bayesian model circadian activity movement rate Ursos arctos |
spellingShingle |
Apennine brown bear Bayesian model circadian activity movement rate Ursos arctos Donatelli, Aurora Mastrantonio, Gianluca Ciucci, Paolo Circadian activity of small brown bear populations living in human-dominated landscapes |
topic_facet |
Apennine brown bear Bayesian model circadian activity movement rate Ursos arctos |
description |
Whereas numerous studies on large carnivores have focused on analyzing spatial patterns and habitat use, the temporal dimension of their activity has been relatively little investigated, making this a topic of growing interest, especially in human-dominated landscapes. Relict and isolated Apennine brown bears (Ursus arctos marsicanus) have been living in a human-modified landscape since millennia, but no information is available on their activity patterns. By means of GPS telemetry (26,880 GPS locations collected from 18 adult Apennine brown bears) we investigated their circadian rhythms, using hourly movement rates as an index of bear activity. Based on a Bayesian modeling approach, circadian activity of Apennine brown bears was described by a bimodal curve, with peaks of activity around sunrise and sunset. We revealed seasonal effects, with bears exhibiting higher movement rates throughout the mating season, but no relevant influence of sex. In addition, bears increased their movement rate at distances < 100-500m to roads and settlementsexclusivelyduring spring and late summer, suggesting a trade-off between foraging opportunities and risk avoidance. The absence of a marked nocturnality in Apennine brown bears suggests a relatively low degree of habitat encroachment and disturbance by humans. Yet, the occurrence of crepuscular activity patterns and the responses in proximity of anthropogenic landscape features likely indicate a coadaptation by bears to human presence through a shift in their temporal niche. Further studies should aim to unveil fitness implications of such modifications in activity patterns. |
author2 |
Donatelli, Aurora Mastrantonio, Gianluca Ciucci, Paolo |
format |
Article in Journal/Newspaper |
author |
Donatelli, Aurora Mastrantonio, Gianluca Ciucci, Paolo |
author_facet |
Donatelli, Aurora Mastrantonio, Gianluca Ciucci, Paolo |
author_sort |
Donatelli, Aurora |
title |
Circadian activity of small brown bear populations living in human-dominated landscapes |
title_short |
Circadian activity of small brown bear populations living in human-dominated landscapes |
title_full |
Circadian activity of small brown bear populations living in human-dominated landscapes |
title_fullStr |
Circadian activity of small brown bear populations living in human-dominated landscapes |
title_full_unstemmed |
Circadian activity of small brown bear populations living in human-dominated landscapes |
title_sort |
circadian activity of small brown bear populations living in human-dominated landscapes |
publisher |
Nature Publishing Group |
publishDate |
2022 |
url |
https://hdl.handle.net/11573/1666206 https://doi.org/10.1038/s41598-022-20163-1 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/36138081 info:eu-repo/semantics/altIdentifier/wos/WOS:000859183800054 volume:12 issue:1 firstpage:1 lastpage:11 numberofpages:11 journal:SCIENTIFIC REPORTS https://hdl.handle.net/11573/1666206 doi:10.1038/s41598-022-20163-1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85138439425 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-022-20163-1 |
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Scientific Reports |
container_volume |
12 |
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1792055536896704512 |