Intraguild predation and competition impacts on a subordinate predator
Intraguild (IG) predation and interspecific competition may affect the settlement and success of species in their habitats. Using data on forest-dwelling hawks from Finland, we addressed the impact of an IG predator, the northern goshawk Accipiter gentilis (goshawk), on the breeding of an IG prey, t...
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/175688 2024-04-28T07:53:03+00:00 Intraguild predation and competition impacts on a subordinate predator Bjorklund, Heidi Santangeli, Andrea Blanchet, F. Guillaume Huitu, Otso Lehtoranta, Hannu Linden, Harto Valkama, Jari Laaksonen, Toni Finnish Museum of Natural History Zoology Department of Forest Sciences Biosciences 2017-02-20T10:11:01Z 13 application/pdf http://hdl.handle.net/10138/175688 eng eng Springer 10.1007/s00442-015-3523-z We are grateful to the many volunteer bird-of-prey ringers for their long-term fieldwork. We thank Jukka Rintala for retrieving the grouse data, Henriikka Simola and Kaisa Valimaki for providing the weather data and Sanna Makelainen for geoprocessing advice. We also want to acknowledge Sara Fraixedas and two anonymous reviewers for their comments that improved the manuscript. This study was supported by the Finnish Museum of Natural History Luomus. H.B. received funding from the Kone Foundation, the University of Helsinki, the Doctoral Programme in Wildlife Biology Research Luova of the University of Helsinki, and the Finnish Museum of Natural History Luomus. T.L. received funding from the Academy of Finland. Bjorklund , H , Santangeli , A , Blanchet , F G , Huitu , O , Lehtoranta , H , Linden , H , Valkama , J & Laaksonen , T 2016 , ' Intraguild predation and competition impacts on a subordinate predator ' , Oecologia , vol. 181 , no. 1 , pp. 257-269 . https://doi.org/10.1007/s00442-015-3523-z ORCID: /0000-0002-7256-7634/work/29696839 ORCID: /0000-0002-0393-7320/work/30208074 http://hdl.handle.net/10138/175688 a6d563aa-9ad8-4886-b736-87d5de05cf29 84957593201 000374564000023 other info:eu-repo/semantics/openAccess openAccess Bird-of-prey Predator avoidance Interference competition Dominance Food conflict GOSHAWK ACCIPITER-GENTILIS BUZZARD BUTEO-BUTEO FIELD EXPERIMENTS SPOTTED OWLS TOP-DOWN COMMON BUZZARD BARRED OWLS BOTTOM-UP HABITAT 1181 Ecology evolutionary biology Article acceptedVersion 2017 ftunivhelsihelda 2024-04-09T23:59:54Z Intraguild (IG) predation and interspecific competition may affect the settlement and success of species in their habitats. Using data on forest-dwelling hawks from Finland, we addressed the impact of an IG predator, the northern goshawk Accipiter gentilis (goshawk), on the breeding of an IG prey, the common buzzard Buteo buteo. We hypothesized that the subordinate common buzzard avoids breeding in the proximity of goshawks and that interspecific competitors, mainly Strix owls, may also disturb common buzzards by competing for nests and food. Our results show that common buzzards more frequently occupied territories with a low IG predation threat and with no interspecific competitors. We also observed that common buzzards avoided territories with high levels of grouse, the main food of goshawks, possibly due to a risk of IG predation since abundant grouse can attract goshawks. High levels of small rodents attracted interspecific competitors to common buzzard territories and created a situation where there was not only an abundance of food but also an abundance of competitors for the food. These results suggest interplay between top-down and bottom-up processes which influence the interactions between avian predator species. We conclude that the common buzzard needs to balance the risks of IG predation and interference competition with the availability of its own resources. The presence of other predators associated with high food levels may impede a subordinate predator taking full advantage of the available food. Based on our results, it appears that interspecific interactions with dominant predators have the potential to influence the distribution pattern of subordinate predators. Peer reviewed Article in Journal/Newspaper Accipiter gentilis Northern Goshawk HELDA – University of Helsinki Open Repository Oecologia 181 1 257 269 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
Bird-of-prey Predator avoidance Interference competition Dominance Food conflict GOSHAWK ACCIPITER-GENTILIS BUZZARD BUTEO-BUTEO FIELD EXPERIMENTS SPOTTED OWLS TOP-DOWN COMMON BUZZARD BARRED OWLS BOTTOM-UP HABITAT 1181 Ecology evolutionary biology |
spellingShingle |
Bird-of-prey Predator avoidance Interference competition Dominance Food conflict GOSHAWK ACCIPITER-GENTILIS BUZZARD BUTEO-BUTEO FIELD EXPERIMENTS SPOTTED OWLS TOP-DOWN COMMON BUZZARD BARRED OWLS BOTTOM-UP HABITAT 1181 Ecology evolutionary biology Bjorklund, Heidi Santangeli, Andrea Blanchet, F. Guillaume Huitu, Otso Lehtoranta, Hannu Linden, Harto Valkama, Jari Laaksonen, Toni Intraguild predation and competition impacts on a subordinate predator |
topic_facet |
Bird-of-prey Predator avoidance Interference competition Dominance Food conflict GOSHAWK ACCIPITER-GENTILIS BUZZARD BUTEO-BUTEO FIELD EXPERIMENTS SPOTTED OWLS TOP-DOWN COMMON BUZZARD BARRED OWLS BOTTOM-UP HABITAT 1181 Ecology evolutionary biology |
description |
Intraguild (IG) predation and interspecific competition may affect the settlement and success of species in their habitats. Using data on forest-dwelling hawks from Finland, we addressed the impact of an IG predator, the northern goshawk Accipiter gentilis (goshawk), on the breeding of an IG prey, the common buzzard Buteo buteo. We hypothesized that the subordinate common buzzard avoids breeding in the proximity of goshawks and that interspecific competitors, mainly Strix owls, may also disturb common buzzards by competing for nests and food. Our results show that common buzzards more frequently occupied territories with a low IG predation threat and with no interspecific competitors. We also observed that common buzzards avoided territories with high levels of grouse, the main food of goshawks, possibly due to a risk of IG predation since abundant grouse can attract goshawks. High levels of small rodents attracted interspecific competitors to common buzzard territories and created a situation where there was not only an abundance of food but also an abundance of competitors for the food. These results suggest interplay between top-down and bottom-up processes which influence the interactions between avian predator species. We conclude that the common buzzard needs to balance the risks of IG predation and interference competition with the availability of its own resources. The presence of other predators associated with high food levels may impede a subordinate predator taking full advantage of the available food. Based on our results, it appears that interspecific interactions with dominant predators have the potential to influence the distribution pattern of subordinate predators. Peer reviewed |
author2 |
Finnish Museum of Natural History Zoology Department of Forest Sciences Biosciences |
format |
Article in Journal/Newspaper |
author |
Bjorklund, Heidi Santangeli, Andrea Blanchet, F. Guillaume Huitu, Otso Lehtoranta, Hannu Linden, Harto Valkama, Jari Laaksonen, Toni |
author_facet |
Bjorklund, Heidi Santangeli, Andrea Blanchet, F. Guillaume Huitu, Otso Lehtoranta, Hannu Linden, Harto Valkama, Jari Laaksonen, Toni |
author_sort |
Bjorklund, Heidi |
title |
Intraguild predation and competition impacts on a subordinate predator |
title_short |
Intraguild predation and competition impacts on a subordinate predator |
title_full |
Intraguild predation and competition impacts on a subordinate predator |
title_fullStr |
Intraguild predation and competition impacts on a subordinate predator |
title_full_unstemmed |
Intraguild predation and competition impacts on a subordinate predator |
title_sort |
intraguild predation and competition impacts on a subordinate predator |
publisher |
Springer |
publishDate |
2017 |
url |
http://hdl.handle.net/10138/175688 |
genre |
Accipiter gentilis Northern Goshawk |
genre_facet |
Accipiter gentilis Northern Goshawk |
op_relation |
10.1007/s00442-015-3523-z We are grateful to the many volunteer bird-of-prey ringers for their long-term fieldwork. We thank Jukka Rintala for retrieving the grouse data, Henriikka Simola and Kaisa Valimaki for providing the weather data and Sanna Makelainen for geoprocessing advice. We also want to acknowledge Sara Fraixedas and two anonymous reviewers for their comments that improved the manuscript. This study was supported by the Finnish Museum of Natural History Luomus. H.B. received funding from the Kone Foundation, the University of Helsinki, the Doctoral Programme in Wildlife Biology Research Luova of the University of Helsinki, and the Finnish Museum of Natural History Luomus. T.L. received funding from the Academy of Finland. Bjorklund , H , Santangeli , A , Blanchet , F G , Huitu , O , Lehtoranta , H , Linden , H , Valkama , J & Laaksonen , T 2016 , ' Intraguild predation and competition impacts on a subordinate predator ' , Oecologia , vol. 181 , no. 1 , pp. 257-269 . https://doi.org/10.1007/s00442-015-3523-z ORCID: /0000-0002-7256-7634/work/29696839 ORCID: /0000-0002-0393-7320/work/30208074 http://hdl.handle.net/10138/175688 a6d563aa-9ad8-4886-b736-87d5de05cf29 84957593201 000374564000023 |
op_rights |
other info:eu-repo/semantics/openAccess openAccess |
container_title |
Oecologia |
container_volume |
181 |
container_issue |
1 |
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257 |
op_container_end_page |
269 |
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1797581480142045184 |