Data from: 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 turn to ungulate carcasses as an alternative food source. As important and localized resource patches, carrion promotes co-occurrence of different individuals, and its use by predators is likely to be affected by inter...
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ftzenodo:oai:zenodo.org:10999487 2024-09-15T17:52:37+00:00 Data from: 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 Yoccoz, Nigel Kleiven, Eivind Nicolau, Pedro Ehrich, Dorothee 2024-04-18 https://doi.org/10.5061/dryad.41ns1rnnn unknown Zenodo https://github.com/SimLacombe/TundraFoxes https://data.coat.no/dataset/v_scavengers_cameratraps_v1 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.41ns1rnnn oai:zenodo.org:10999487 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode scavengers Tundra resource use intraguild interactions Arctic fox Vules lagopus red fox Vulpes vulpes info:eu-repo/semantics/other 2024 ftzenodo https://doi.org/10.5061/dryad.41ns1rnnn 2024-07-27T00:36:12Z In the Arctic tundra, predators face recurrent periods of food scarcity and often turn to ungulate carcasses as an alternative food source. As important and localized resource patches, carrion promotes co-occurrence of different individuals, and its use by predators is likely to be affected by interspecific competition. We studied how interspecific competition and resource availability impact winter use of carrion by Arctic and red foxes in low Arctic Fennoscandia. We predicted that presence of red foxes limits Arctic foxes' use of carrion, and that competition depends on the availability of other resources. We monitored Arctic and red fox presence at supplied carrion using camera traps. From 2006 to 2021, between 16 and 20 cameras were active for two months in late winter (288 camera-winters). Using a multi-species dynamic occupancy model at a week-to-week scale, we evaluated use of carrion by foxes while accounting for the presence of competitors, rodent availability and supplemental feeding provided to Arctic foxes. Competition affected carrion use by increasing both species' probability to leave occupied carcasses sites between consecutive weeks. This increase was similar for the two species, suggesting symmetrical avoidance. Increased rodent abundance was associated with a higher probability of colonizing carrion sites for both species. For Arctic foxes, however, this increase was only observed at carcasses unoccupied by red foxes, showing greater avoidance when alternative preys are available. Supplementary feeding increased Arctic foxes' carrion use, regardless of red fox presence. Contrary to expectations, we did not find strong signs of asymmetric competition for carrion in winter, which suggests that interactions for resources at a short time scale are not necessarily aligned with interactions at the scale of the population. In addition, we found that competition for carcasses depends on the availability of other resources, suggesting that interactions between predators depend on the ecological ... Other/Unknown Material Arctic Fox Fennoscandia Fennoscandian Tundra Zenodo |
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language |
unknown |
topic |
scavengers Tundra resource use intraguild interactions Arctic fox Vules lagopus red fox Vulpes vulpes |
spellingShingle |
scavengers Tundra resource use intraguild interactions Arctic fox Vules lagopus red fox Vulpes vulpes Lacombe, Simon Ims, Rolf Yoccoz, Nigel Kleiven, Eivind Nicolau, Pedro Ehrich, Dorothee Data from: 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 |
scavengers Tundra resource use intraguild interactions Arctic fox Vules lagopus red fox Vulpes vulpes |
description |
In the Arctic tundra, predators face recurrent periods of food scarcity and often turn to ungulate carcasses as an alternative food source. As important and localized resource patches, carrion promotes co-occurrence of different individuals, and its use by predators is likely to be affected by interspecific competition. We studied how interspecific competition and resource availability impact winter use of carrion by Arctic and red foxes in low Arctic Fennoscandia. We predicted that presence of red foxes limits Arctic foxes' use of carrion, and that competition depends on the availability of other resources. We monitored Arctic and red fox presence at supplied carrion using camera traps. From 2006 to 2021, between 16 and 20 cameras were active for two months in late winter (288 camera-winters). Using a multi-species dynamic occupancy model at a week-to-week scale, we evaluated use of carrion by foxes while accounting for the presence of competitors, rodent availability and supplemental feeding provided to Arctic foxes. Competition affected carrion use by increasing both species' probability to leave occupied carcasses sites between consecutive weeks. This increase was similar for the two species, suggesting symmetrical avoidance. Increased rodent abundance was associated with a higher probability of colonizing carrion sites for both species. For Arctic foxes, however, this increase was only observed at carcasses unoccupied by red foxes, showing greater avoidance when alternative preys are available. Supplementary feeding increased Arctic foxes' carrion use, regardless of red fox presence. Contrary to expectations, we did not find strong signs of asymmetric competition for carrion in winter, which suggests that interactions for resources at a short time scale are not necessarily aligned with interactions at the scale of the population. In addition, we found that competition for carcasses depends on the availability of other resources, suggesting that interactions between predators depend on the ecological ... |
format |
Other/Unknown Material |
author |
Lacombe, Simon Ims, Rolf Yoccoz, Nigel Kleiven, Eivind Nicolau, Pedro Ehrich, Dorothee |
author_facet |
Lacombe, Simon Ims, Rolf Yoccoz, Nigel Kleiven, Eivind Nicolau, Pedro Ehrich, Dorothee |
author_sort |
Lacombe, Simon |
title |
Data from: 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 |
Data from: 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 |
Data from: 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 |
Data from: 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 |
Data from: 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 |
data from: effects of resource availability and interspecific interactions on arctic and red foxes' winter use of ungulate carrion in the fennoscandian low-arctic tundra |
publisher |
Zenodo |
publishDate |
2024 |
url |
https://doi.org/10.5061/dryad.41ns1rnnn |
genre |
Arctic Fox Fennoscandia Fennoscandian Tundra |
genre_facet |
Arctic Fox Fennoscandia Fennoscandian Tundra |
op_relation |
https://github.com/SimLacombe/TundraFoxes https://data.coat.no/dataset/v_scavengers_cameratraps_v1 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.41ns1rnnn oai:zenodo.org:10999487 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.41ns1rnnn |
_version_ |
1810294669691584512 |