Global change risks a threatened species due to alteration of predator–prey dynamics
Abstract Although global change can reshape ecosystems by triggering cascading effects on food webs, indirect interactions remain largely overlooked. Climate‐ and land‐use‐induced changes in landscape cause shifts in vegetation composition, which affect entire food webs. We used simulations of fores...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-03-01
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| Series: | Ecosphere |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ecs2.4485 |
| _version_ | 1797856514929590272 |
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| author | Guillemette Labadie Clément Hardy Yan Boulanger Virginie Vanlandeghem Mark Hebblewhite Daniel Fortin |
| author_facet | Guillemette Labadie Clément Hardy Yan Boulanger Virginie Vanlandeghem Mark Hebblewhite Daniel Fortin |
| author_sort | Guillemette Labadie |
| collection | DOAJ |
| description | Abstract Although global change can reshape ecosystems by triggering cascading effects on food webs, indirect interactions remain largely overlooked. Climate‐ and land‐use‐induced changes in landscape cause shifts in vegetation composition, which affect entire food webs. We used simulations of forest dynamics and movements of interacting species, parameterized by empirical observations, to predict the outcomes of global change on a large‐mammal food web in the boreal forest. We demonstrate that climate‐ and land‐use‐induced changes in forest landscapes exacerbate asymmetrical apparent competition between moose and threatened caribou populations through wolf predation. Although increased prey mortalities came from both behavioral and numerical responses, indirect effects from numerical responses had an overwhelming effect. The increase in caribou mortalities was exacerbated by the cumulating effects of land use over the short term and climate change impacts over the long term, with higher impact of land use. Indirect trophic interactions will be key to understanding community dynamics under global change. |
| first_indexed | 2024-04-09T20:41:36Z |
| format | Article |
| id | doaj.art-e1e0d1e767c74383a4347302e517561c |
| institution | Directory Open Access Journal |
| issn | 2150-8925 |
| language | English |
| last_indexed | 2024-04-09T20:41:36Z |
| publishDate | 2023-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecosphere |
| spelling | doaj.art-e1e0d1e767c74383a4347302e517561c2023-03-30T01:42:38ZengWileyEcosphere2150-89252023-03-01143n/an/a10.1002/ecs2.4485Global change risks a threatened species due to alteration of predator–prey dynamicsGuillemette Labadie0Clément Hardy1Yan Boulanger2Virginie Vanlandeghem3Mark Hebblewhite4Daniel Fortin5Centre d'Étude de la Forêt, Département de biologie Université Laval Quebec City Quebec Canada G1V 0A6Centre d'Étude de la Forêt, Département de biologie Université du Québec à Montréal Montreal Quebec Canada H3C 3P8Canadian Forest Service Natural Resources Canada Quebec City Quebec Canada G1V4C7Département de biologie Université Laval Quebec City Quebec Canada G1V 0A6Wildlife Biology Program, Department of Ecosystem and Conservation Sciences, Franke College of Forestry and Conservation University of Montana Missoula Montana 59812 USACentre d'Étude de la Forêt, Département de biologie Université Laval Quebec City Quebec Canada G1V 0A6Abstract Although global change can reshape ecosystems by triggering cascading effects on food webs, indirect interactions remain largely overlooked. Climate‐ and land‐use‐induced changes in landscape cause shifts in vegetation composition, which affect entire food webs. We used simulations of forest dynamics and movements of interacting species, parameterized by empirical observations, to predict the outcomes of global change on a large‐mammal food web in the boreal forest. We demonstrate that climate‐ and land‐use‐induced changes in forest landscapes exacerbate asymmetrical apparent competition between moose and threatened caribou populations through wolf predation. Although increased prey mortalities came from both behavioral and numerical responses, indirect effects from numerical responses had an overwhelming effect. The increase in caribou mortalities was exacerbated by the cumulating effects of land use over the short term and climate change impacts over the long term, with higher impact of land use. Indirect trophic interactions will be key to understanding community dynamics under global change.https://doi.org/10.1002/ecs2.4485apparent competitionbehavioral responseclimate changeland use changenumerical responsespecies conservation |
| spellingShingle | Guillemette Labadie Clément Hardy Yan Boulanger Virginie Vanlandeghem Mark Hebblewhite Daniel Fortin Global change risks a threatened species due to alteration of predator–prey dynamics Ecosphere apparent competition behavioral response climate change land use change numerical response species conservation |
| title | Global change risks a threatened species due to alteration of predator–prey dynamics |
| title_full | Global change risks a threatened species due to alteration of predator–prey dynamics |
| title_fullStr | Global change risks a threatened species due to alteration of predator–prey dynamics |
| title_full_unstemmed | Global change risks a threatened species due to alteration of predator–prey dynamics |
| title_short | Global change risks a threatened species due to alteration of predator–prey dynamics |
| title_sort | global change risks a threatened species due to alteration of predator prey dynamics |
| topic | apparent competition behavioral response climate change land use change numerical response species conservation |
| url | https://doi.org/10.1002/ecs2.4485 |
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