Consequences of migratory coupling of predators and prey when mediated by human actions
Aim : Animal migrations influence ecosystem structure, dynamics, and persistence of predator and prey populations. The theory of migratory coupling postulates that aggregations of migrant prey can induce large-scale synchronized movements in predators, and this coupling is consequential for the dyna...
Main Authors: | , , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
Zenodo
2021
|
Subjects: | |
Online Access: | https://doi.org/10.5061/dryad.rbnzs7hbp |
id |
ftzenodo:oai:zenodo.org:5048267 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:5048267 2024-09-15T17:36:18+00:00 Consequences of migratory coupling of predators and prey when mediated by human actions Singh, Navinder Ecke, Frauke Katzner, Todd Bagchi, Sumanta Sandstöm, Per Hörnfeldt, Birger 2021-06-30 https://doi.org/10.5061/dryad.rbnzs7hbp unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.rbnzs7hbp oai:zenodo.org:5048267 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode info:eu-repo/semantics/other 2021 ftzenodo https://doi.org/10.5061/dryad.rbnzs7hbp 2024-07-27T03:39:25Z Aim : Animal migrations influence ecosystem structure, dynamics, and persistence of predator and prey populations. The theory of migratory coupling postulates that aggregations of migrant prey can induce large-scale synchronized movements in predators, and this coupling is consequential for the dynamics of ecological communities. The degree to which humans influence these interactions remains largely unknown. We tested whether the creation of large resource pulses by humans such as seasonal herding of reindeer Rangifer tarandus and hunting of moose, Alces alces, can induce migratory coupling with Golden Eagles, Aquila chrysaetos , and if these lead to demographic consequences for the eagles. Location : Fennoscandia Methods : We used movement data from 32 tracked Golden Eagles spanning 125 annual migratory cycles over eight years. We obtained reindeer distribution data through collaboration with reindeer herders based on satellite tracking of reindeer, and moose harvest data from the national hunting statistics for Sweden. We assessed demographic consequences for eagles from ingesting lead from ammunition fragments in moose carcasses through survival estimates and their links with lead concentrations in eagles' blood. Results : In spring, eagles migrated hundreds of kilometers to be spatially and temporally coupled with calving reindeer, whereas in autumn, eagles matched their distribution with the location and timing of moose hunt. Juveniles were more likely to couple with reindeer calving, whereas adults were particularly drawn to areas of higher moose harvest. Due to this coupling, eagles ingested lead from spent ammunition in moose offal and carcasses and the resulting lead-toxicity increased the risk of mortality by 3.4 times. Main conclusions : We show how migratory coupling connects landscape processes and that human actions can influence migratory coupling over large spatial scales and increase demographic risks for predators. We provide vital knowledge towards resolving human wildlife conflicts and the ... Other/Unknown Material Alces alces Fennoscandia Rangifer tarandus Aquila chrysaetos Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
description |
Aim : Animal migrations influence ecosystem structure, dynamics, and persistence of predator and prey populations. The theory of migratory coupling postulates that aggregations of migrant prey can induce large-scale synchronized movements in predators, and this coupling is consequential for the dynamics of ecological communities. The degree to which humans influence these interactions remains largely unknown. We tested whether the creation of large resource pulses by humans such as seasonal herding of reindeer Rangifer tarandus and hunting of moose, Alces alces, can induce migratory coupling with Golden Eagles, Aquila chrysaetos , and if these lead to demographic consequences for the eagles. Location : Fennoscandia Methods : We used movement data from 32 tracked Golden Eagles spanning 125 annual migratory cycles over eight years. We obtained reindeer distribution data through collaboration with reindeer herders based on satellite tracking of reindeer, and moose harvest data from the national hunting statistics for Sweden. We assessed demographic consequences for eagles from ingesting lead from ammunition fragments in moose carcasses through survival estimates and their links with lead concentrations in eagles' blood. Results : In spring, eagles migrated hundreds of kilometers to be spatially and temporally coupled with calving reindeer, whereas in autumn, eagles matched their distribution with the location and timing of moose hunt. Juveniles were more likely to couple with reindeer calving, whereas adults were particularly drawn to areas of higher moose harvest. Due to this coupling, eagles ingested lead from spent ammunition in moose offal and carcasses and the resulting lead-toxicity increased the risk of mortality by 3.4 times. Main conclusions : We show how migratory coupling connects landscape processes and that human actions can influence migratory coupling over large spatial scales and increase demographic risks for predators. We provide vital knowledge towards resolving human wildlife conflicts and the ... |
format |
Other/Unknown Material |
author |
Singh, Navinder Ecke, Frauke Katzner, Todd Bagchi, Sumanta Sandstöm, Per Hörnfeldt, Birger |
spellingShingle |
Singh, Navinder Ecke, Frauke Katzner, Todd Bagchi, Sumanta Sandstöm, Per Hörnfeldt, Birger Consequences of migratory coupling of predators and prey when mediated by human actions |
author_facet |
Singh, Navinder Ecke, Frauke Katzner, Todd Bagchi, Sumanta Sandstöm, Per Hörnfeldt, Birger |
author_sort |
Singh, Navinder |
title |
Consequences of migratory coupling of predators and prey when mediated by human actions |
title_short |
Consequences of migratory coupling of predators and prey when mediated by human actions |
title_full |
Consequences of migratory coupling of predators and prey when mediated by human actions |
title_fullStr |
Consequences of migratory coupling of predators and prey when mediated by human actions |
title_full_unstemmed |
Consequences of migratory coupling of predators and prey when mediated by human actions |
title_sort |
consequences of migratory coupling of predators and prey when mediated by human actions |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://doi.org/10.5061/dryad.rbnzs7hbp |
genre |
Alces alces Fennoscandia Rangifer tarandus Aquila chrysaetos |
genre_facet |
Alces alces Fennoscandia Rangifer tarandus Aquila chrysaetos |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.rbnzs7hbp oai:zenodo.org:5048267 |
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.rbnzs7hbp |
_version_ |
1810488614379847680 |