Temperature constraints on foraging behaviour of male Alpine ibex (Capra ibex) in summer
In arctic and alpine environments, warm summer temperatures may force a reduction in foraging time of large herbivores, whose tolerance for heat is lower than for species adapted to warmer weather. We constructed time budgets for marked ibex (Capra ibex) males over two summers to test whether warm t...
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Online Access: | http://hdl.handle.net/2318/137514 |
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ftunivtorino:oai:iris.unito.it:2318/137514 2023-10-29T02:34:27+01:00 Temperature constraints on foraging behaviour of male Alpine ibex (Capra ibex) in summer J. F. AUBLET M. FESTA BIANCHET BERGERO, Domenico B. BASSANO J. F. AUBLET M. FESTA-BIANCHET D. BERGERO B. BASSANO 2009 http://hdl.handle.net/2318/137514 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000262576700022 volume:159 firstpage:237 lastpage:247 numberofpages:11 journal:OECOLOGIA http://hdl.handle.net/2318/137514 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-58549102980 info:eu-repo/semantics/closedAccess info:eu-repo/semantics/article 2009 ftunivtorino 2023-10-03T22:18:19Z In arctic and alpine environments, warm summer temperatures may force a reduction in foraging time of large herbivores, whose tolerance for heat is lower than for species adapted to warmer weather. We constructed time budgets for marked ibex (Capra ibex) males over two summers to test whether warm temperatures constrained foraging behaviour and forced altitudinal migrations. As daily temperature and solar radiation increased, feeding activity was reduced at midday and evening, but increased in the early morning, probably to anticipate for an expected reduction in foraging later in the day. With increasing temperature and solar radiation, ibex moved to higher elevations where they spent very little time feeding. Changes in forage quality and availability could not explain altitudinal migration. Temperatures above 15–20°C apparently result in heat discomfort in male Alpine ibex. As temperature and solar radiation increased, older and larger ibex spent less time feeding during daylight and showed a steeper decrease in feeding time than younger and smaller ibex. Larger males may be more sensitive to temperature and solar radiation, or may have more Xexibility in allocating time to diVerent activities, given their lower relative energetic requirements. Article in Journal/Newspaper Arctic Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
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Open Polar |
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Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
op_collection_id |
ftunivtorino |
language |
English |
description |
In arctic and alpine environments, warm summer temperatures may force a reduction in foraging time of large herbivores, whose tolerance for heat is lower than for species adapted to warmer weather. We constructed time budgets for marked ibex (Capra ibex) males over two summers to test whether warm temperatures constrained foraging behaviour and forced altitudinal migrations. As daily temperature and solar radiation increased, feeding activity was reduced at midday and evening, but increased in the early morning, probably to anticipate for an expected reduction in foraging later in the day. With increasing temperature and solar radiation, ibex moved to higher elevations where they spent very little time feeding. Changes in forage quality and availability could not explain altitudinal migration. Temperatures above 15–20°C apparently result in heat discomfort in male Alpine ibex. As temperature and solar radiation increased, older and larger ibex spent less time feeding during daylight and showed a steeper decrease in feeding time than younger and smaller ibex. Larger males may be more sensitive to temperature and solar radiation, or may have more Xexibility in allocating time to diVerent activities, given their lower relative energetic requirements. |
author2 |
J. F. AUBLET M. FESTA-BIANCHET D. BERGERO B. BASSANO |
format |
Article in Journal/Newspaper |
author |
J. F. AUBLET M. FESTA BIANCHET BERGERO, Domenico B. BASSANO |
spellingShingle |
J. F. AUBLET M. FESTA BIANCHET BERGERO, Domenico B. BASSANO Temperature constraints on foraging behaviour of male Alpine ibex (Capra ibex) in summer |
author_facet |
J. F. AUBLET M. FESTA BIANCHET BERGERO, Domenico B. BASSANO |
author_sort |
J. F. AUBLET |
title |
Temperature constraints on foraging behaviour of male Alpine ibex (Capra ibex) in summer |
title_short |
Temperature constraints on foraging behaviour of male Alpine ibex (Capra ibex) in summer |
title_full |
Temperature constraints on foraging behaviour of male Alpine ibex (Capra ibex) in summer |
title_fullStr |
Temperature constraints on foraging behaviour of male Alpine ibex (Capra ibex) in summer |
title_full_unstemmed |
Temperature constraints on foraging behaviour of male Alpine ibex (Capra ibex) in summer |
title_sort |
temperature constraints on foraging behaviour of male alpine ibex (capra ibex) in summer |
publishDate |
2009 |
url |
http://hdl.handle.net/2318/137514 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000262576700022 volume:159 firstpage:237 lastpage:247 numberofpages:11 journal:OECOLOGIA http://hdl.handle.net/2318/137514 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-58549102980 |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1781057066833543168 |