Data from: Competition between apex predators? Brown bears decrease wolf kill rate on two continents
Trophic interactions are a fundamental topic in ecology, but we know little about how competition between apex predators affects predation, the mechanism driving top-down forcing in ecosystems. We used long-term datasets from Scandinavia (Europe) and Yellowstone National Park (North America) to eval...
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ftdryad:oai:v1.datadryad.org:10255/dryad.134980 2023-05-15T15:50:30+02:00 Data from: Competition between apex predators? Brown bears decrease wolf kill rate on two continents Tallian, Aimee Ordiz, Andres Metz, Matthew C. Milleret, Cyril Wikenros, Camilla Smith, Douglas W. Stahler, Daniel R. Kindberg, Jonas MacNulty, Daniel R. Wabakken, Petter Swenson, Jon E. Sand, Håkan Scandinavia Yellowstone National Park 2017-01-18T13:54:33Z http://hdl.handle.net/10255/dryad.134980 https://doi.org/10.5061/dryad.18nh4 unknown doi:10.5061/dryad.18nh4/1 doi:10.1098/rspb.2016.2368 doi:10.5061/dryad.18nh4 Tallian A, Ordiz A, Metz MC, Milleret C, Wikenros C, Smith DW, Stahler DR, Kindberg J, MacNulty DR, Wabakken P, Swenson JE, Sand H (2017) Competition between apex predators? Brown bears decrease wolf kill rate on two continents. 284(1848): 20162368. 0962-8452 http://hdl.handle.net/10255/dryad.134980 competition predation Article 2017 ftdryad https://doi.org/10.5061/dryad.18nh4 https://doi.org/10.5061/dryad.18nh4/1 https://doi.org/10.1098/rspb.2016.2368 2020-01-01T15:45:06Z Trophic interactions are a fundamental topic in ecology, but we know little about how competition between apex predators affects predation, the mechanism driving top-down forcing in ecosystems. We used long-term datasets from Scandinavia (Europe) and Yellowstone National Park (North America) to evaluate how grey wolf (Canis lupus) kill rate was affected by a sympatric apex predator, the brown bear (Ursus arctos). We used kill interval (i.e. the number of days between consecutive ungulate kills) as a proxy of kill rate. Although brown bears can monopolize wolf kills, we found no support in either study system for the common assumption that they cause wolves to kill more often. On the contrary, our results showed the opposite effect. In Scandinavia, wolf packs sympatric with brown bears killed less often than allopatric packs during both spring (after bear den emergence) and summer. Similarly, the presence of bears at wolf-killed ungulates was associated with wolves killing less often during summer in Yellowstone. The consistency in results between the two systems suggests that brown bear presence actually reduces wolf kill rate. Our results suggest that the influence of predation on lower trophic levels may depend on the composition of predator communities. Article in Journal/Newspaper Canis lupus Ursus arctos Dryad Digital Repository (Duke University) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
competition predation |
spellingShingle |
competition predation Tallian, Aimee Ordiz, Andres Metz, Matthew C. Milleret, Cyril Wikenros, Camilla Smith, Douglas W. Stahler, Daniel R. Kindberg, Jonas MacNulty, Daniel R. Wabakken, Petter Swenson, Jon E. Sand, Håkan Data from: Competition between apex predators? Brown bears decrease wolf kill rate on two continents |
topic_facet |
competition predation |
description |
Trophic interactions are a fundamental topic in ecology, but we know little about how competition between apex predators affects predation, the mechanism driving top-down forcing in ecosystems. We used long-term datasets from Scandinavia (Europe) and Yellowstone National Park (North America) to evaluate how grey wolf (Canis lupus) kill rate was affected by a sympatric apex predator, the brown bear (Ursus arctos). We used kill interval (i.e. the number of days between consecutive ungulate kills) as a proxy of kill rate. Although brown bears can monopolize wolf kills, we found no support in either study system for the common assumption that they cause wolves to kill more often. On the contrary, our results showed the opposite effect. In Scandinavia, wolf packs sympatric with brown bears killed less often than allopatric packs during both spring (after bear den emergence) and summer. Similarly, the presence of bears at wolf-killed ungulates was associated with wolves killing less often during summer in Yellowstone. The consistency in results between the two systems suggests that brown bear presence actually reduces wolf kill rate. Our results suggest that the influence of predation on lower trophic levels may depend on the composition of predator communities. |
format |
Article in Journal/Newspaper |
author |
Tallian, Aimee Ordiz, Andres Metz, Matthew C. Milleret, Cyril Wikenros, Camilla Smith, Douglas W. Stahler, Daniel R. Kindberg, Jonas MacNulty, Daniel R. Wabakken, Petter Swenson, Jon E. Sand, Håkan |
author_facet |
Tallian, Aimee Ordiz, Andres Metz, Matthew C. Milleret, Cyril Wikenros, Camilla Smith, Douglas W. Stahler, Daniel R. Kindberg, Jonas MacNulty, Daniel R. Wabakken, Petter Swenson, Jon E. Sand, Håkan |
author_sort |
Tallian, Aimee |
title |
Data from: Competition between apex predators? Brown bears decrease wolf kill rate on two continents |
title_short |
Data from: Competition between apex predators? Brown bears decrease wolf kill rate on two continents |
title_full |
Data from: Competition between apex predators? Brown bears decrease wolf kill rate on two continents |
title_fullStr |
Data from: Competition between apex predators? Brown bears decrease wolf kill rate on two continents |
title_full_unstemmed |
Data from: Competition between apex predators? Brown bears decrease wolf kill rate on two continents |
title_sort |
data from: competition between apex predators? brown bears decrease wolf kill rate on two continents |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.134980 https://doi.org/10.5061/dryad.18nh4 |
op_coverage |
Scandinavia Yellowstone National Park |
genre |
Canis lupus Ursus arctos |
genre_facet |
Canis lupus Ursus arctos |
op_relation |
doi:10.5061/dryad.18nh4/1 doi:10.1098/rspb.2016.2368 doi:10.5061/dryad.18nh4 Tallian A, Ordiz A, Metz MC, Milleret C, Wikenros C, Smith DW, Stahler DR, Kindberg J, MacNulty DR, Wabakken P, Swenson JE, Sand H (2017) Competition between apex predators? Brown bears decrease wolf kill rate on two continents. 284(1848): 20162368. 0962-8452 http://hdl.handle.net/10255/dryad.134980 |
op_doi |
https://doi.org/10.5061/dryad.18nh4 https://doi.org/10.5061/dryad.18nh4/1 https://doi.org/10.1098/rspb.2016.2368 |
_version_ |
1766385458611224576 |