Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra
In the Arctic tundra, predators face recurrent periods of food scarcity and often turnto ungulate carcasses as an alternative food source. As important and localized re-source patches, carrion promotes co-occurrence of different individuals, and its useby predators is likely to be affected by inters...
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Online Access: | https://hdl.handle.net/11250/3147421 https://doi.org/10.1002/ece3.11150 |
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ftninstnf:oai:brage.nina.no:11250/3147421 2024-09-15T17:52:37+00:00 Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra Lacombe, Simon Ims, Rolf Anker Yoccoz, Nigel Gilles Kleiven, Eivind Flittie Antunes Lopes Da Silva Nicolau, Pedro Guilherme Ehrich, Dorothee Arctic tundra, Arctic Fennoscandia 2024 application/pdf https://hdl.handle.net/11250/3147421 https://doi.org/10.1002/ece3.11150 eng eng Andre: Miljødirektoratet Ecology and Evolution. 2024, 14 (4), . urn:issn:2045-7758 https://hdl.handle.net/11250/3147421 https://doi.org/10.1002/ece3.11150 cristin:2260889 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2024 The Authors 15 14 Ecology and Evolution 4 e11150 Arctic fox (Vulpes lagopus) intraguild interactions occupancy red fox (Vulpes vulpes) resource availability scavengers tundra Community ecology Restoration ecology Trophic interactions VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Peer reviewed Journal article 2024 ftninstnf https://doi.org/10.1002/ece3.11150 2024-08-22T23:37:03Z In the Arctic tundra, predators face recurrent periods of food scarcity and often turnto ungulate carcasses as an alternative food source. As important and localized re-source patches, carrion promotes co-occurrence of different individuals, and its useby predators is likely to be affected by interspecific competition. We studied howinterspecific competition and resource availability impact winter use of carrion byArctic and red foxes in low Arctic Fennoscandia. We predicted that the presence ofred foxes limits Arctic foxes' use of carrion, and that competition depends on theavailability of other resources. We monitored Arctic and red fox presence at supplied carrion using camera traps. From 2006 to 2021, between 16 and 20 cameraswere active for 2 months in late winter (288 camera-winters). Using a multi-speciesdynamic occupancy model at a week-to-week scale, we evaluated the use of carrionby foxes while accounting for the presence of competitors, rodent availability, andsupplemental feeding provided to Arctic foxes. Competition affected carrion use byincreasing both species' probability to leave occupied carcasses between consecu-tive weeks. This increase was similar for the two species, suggesting symmetricalavoidance. Increased rodent abundance was associated with a higher probability ofcolonizing carrion sites for both species. For Arctic foxes, however, this increase wasonly observed at carcasses unoccupied by red foxes, showing greater avoidance whenalternative preys are available. Supplementary feeding increased Arctic foxes' carrionuse, regardless of red fox presence. Contrary to expectations, we did not find strongsigns of asymmetric competition for carrion in winter, which suggests that interac-tions for resources at a short time scale are not necessarily aligned with interactionsat the scale of the population. In addition, we found that competition for carcassesdepends on the availability of other resources, suggesting that interactions betweenpredators depend on the ecological context. ... Article in Journal/Newspaper Arctic Fox Fennoscandia Fennoscandian Tundra Vulpes lagopus Norwegian Institute for Nature Research: Brage NINA Ecology and Evolution 14 4 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
Arctic fox (Vulpes lagopus) intraguild interactions occupancy red fox (Vulpes vulpes) resource availability scavengers tundra Community ecology Restoration ecology Trophic interactions VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
Arctic fox (Vulpes lagopus) intraguild interactions occupancy red fox (Vulpes vulpes) resource availability scavengers tundra Community ecology Restoration ecology Trophic interactions VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Lacombe, Simon Ims, Rolf Anker Yoccoz, Nigel Gilles Kleiven, Eivind Flittie Antunes Lopes Da Silva Nicolau, Pedro Guilherme Ehrich, Dorothee Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra |
topic_facet |
Arctic fox (Vulpes lagopus) intraguild interactions occupancy red fox (Vulpes vulpes) resource availability scavengers tundra Community ecology Restoration ecology Trophic interactions VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
In the Arctic tundra, predators face recurrent periods of food scarcity and often turnto ungulate carcasses as an alternative food source. As important and localized re-source patches, carrion promotes co-occurrence of different individuals, and its useby predators is likely to be affected by interspecific competition. We studied howinterspecific competition and resource availability impact winter use of carrion byArctic and red foxes in low Arctic Fennoscandia. We predicted that the presence ofred foxes limits Arctic foxes' use of carrion, and that competition depends on theavailability of other resources. We monitored Arctic and red fox presence at supplied carrion using camera traps. From 2006 to 2021, between 16 and 20 cameraswere active for 2 months in late winter (288 camera-winters). Using a multi-speciesdynamic occupancy model at a week-to-week scale, we evaluated the use of carrionby foxes while accounting for the presence of competitors, rodent availability, andsupplemental feeding provided to Arctic foxes. Competition affected carrion use byincreasing both species' probability to leave occupied carcasses between consecu-tive weeks. This increase was similar for the two species, suggesting symmetricalavoidance. Increased rodent abundance was associated with a higher probability ofcolonizing carrion sites for both species. For Arctic foxes, however, this increase wasonly observed at carcasses unoccupied by red foxes, showing greater avoidance whenalternative preys are available. Supplementary feeding increased Arctic foxes' carrionuse, regardless of red fox presence. Contrary to expectations, we did not find strongsigns of asymmetric competition for carrion in winter, which suggests that interac-tions for resources at a short time scale are not necessarily aligned with interactionsat the scale of the population. In addition, we found that competition for carcassesdepends on the availability of other resources, suggesting that interactions betweenpredators depend on the ecological context. ... |
format |
Article in Journal/Newspaper |
author |
Lacombe, Simon Ims, Rolf Anker Yoccoz, Nigel Gilles Kleiven, Eivind Flittie Antunes Lopes Da Silva Nicolau, Pedro Guilherme Ehrich, Dorothee |
author_facet |
Lacombe, Simon Ims, Rolf Anker Yoccoz, Nigel Gilles Kleiven, Eivind Flittie Antunes Lopes Da Silva Nicolau, Pedro Guilherme Ehrich, Dorothee |
author_sort |
Lacombe, Simon |
title |
Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra |
title_short |
Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra |
title_full |
Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra |
title_fullStr |
Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra |
title_full_unstemmed |
Effects of resource availability and interspecific interactions on Arctic and red foxes' winter use of ungulate carrion in the Fennoscandian low-Arctic tundra |
title_sort |
effects of resource availability and interspecific interactions on arctic and red foxes' winter use of ungulate carrion in the fennoscandian low-arctic tundra |
publishDate |
2024 |
url |
https://hdl.handle.net/11250/3147421 https://doi.org/10.1002/ece3.11150 |
op_coverage |
Arctic tundra, Arctic Fennoscandia |
genre |
Arctic Fox Fennoscandia Fennoscandian Tundra Vulpes lagopus |
genre_facet |
Arctic Fox Fennoscandia Fennoscandian Tundra Vulpes lagopus |
op_source |
15 14 Ecology and Evolution 4 e11150 |
op_relation |
Andre: Miljødirektoratet Ecology and Evolution. 2024, 14 (4), . urn:issn:2045-7758 https://hdl.handle.net/11250/3147421 https://doi.org/10.1002/ece3.11150 cristin:2260889 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2024 The Authors |
op_doi |
https://doi.org/10.1002/ece3.11150 |
container_title |
Ecology and Evolution |
container_volume |
14 |
container_issue |
4 |
_version_ |
1810294670380498944 |