Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic
Asymmetrical intraguild predation (AIGP), which combines both predation and competition between predator species, is pervasive in nature with relative strengths varying by prey availability. But with species redistributions associated with climate change, the response by endemic predators within an...
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ftpubmed:oai:pubmedcentral.nih.gov:5719374 2023-05-15T14:54:20+02:00 Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic Yurkowski, David J. Hussey, Nigel E. Fisk, Aaron T. Imrie, Kendra L. Tallman, Ross F. Ferguson, Steven H. 2017-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719374/ http://www.ncbi.nlm.nih.gov/pubmed/29118241 https://doi.org/10.1098/rsbl.2017.0433 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719374/ http://www.ncbi.nlm.nih.gov/pubmed/29118241 http://dx.doi.org/10.1098/rsbl.2017.0433 © 2017 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. Global Change Biology Text 2017 ftpubmed https://doi.org/10.1098/rsbl.2017.0433 2018-11-04T01:21:57Z Asymmetrical intraguild predation (AIGP), which combines both predation and competition between predator species, is pervasive in nature with relative strengths varying by prey availability. But with species redistributions associated with climate change, the response by endemic predators within an AIGP context to changing biotic–abiotic conditions over time (i.e. seasonal and decadal) has yet to be quantified. Furthermore, little is known on AIGP dynamics in ecosystems undergoing rapid directional change such as the Arctic. Here, we investigate the flexibility of AIGP among two predators in the same trophic guild: beluga (Delphinapterus leucas) and Greenland halibut (Reinhardtius hippoglossoides), by season and over 30 years in Cumberland Sound—a system where forage fish capelin (Mallotus villosus) have recently become more available. Using stable isotopes, we illustrate different predator responses to temporal shifts in forage fish availability. On a seasonal cycle, beluga consumed less Greenland halibut and increased consumption of forage fish during summer, contrasting a constant consumption rate of forage fish by Greenland halibut year-round leading to decreased AIGP pressure between predators. Over a decadal scale (1982–2012), annual consumption of forage fish by beluga increased with a concomitant decline in the consumption of Greenland halibut, thereby indicating decreased AIGP pressure between predators in concordance with increased forage fish availability. The long-term changes of AIGP pressure between endemic predators illustrated here highlights climate-driven environmental alterations to interspecific intraguild interactions in the Arctic. Text Arctic Beluga Beluga* Climate change Cumberland Sound Delphinapterus leucas Greenland PubMed Central (PMC) Arctic Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Greenland Biology Letters 13 11 20170433 |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
topic |
Global Change Biology |
spellingShingle |
Global Change Biology Yurkowski, David J. Hussey, Nigel E. Fisk, Aaron T. Imrie, Kendra L. Tallman, Ross F. Ferguson, Steven H. Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic |
topic_facet |
Global Change Biology |
description |
Asymmetrical intraguild predation (AIGP), which combines both predation and competition between predator species, is pervasive in nature with relative strengths varying by prey availability. But with species redistributions associated with climate change, the response by endemic predators within an AIGP context to changing biotic–abiotic conditions over time (i.e. seasonal and decadal) has yet to be quantified. Furthermore, little is known on AIGP dynamics in ecosystems undergoing rapid directional change such as the Arctic. Here, we investigate the flexibility of AIGP among two predators in the same trophic guild: beluga (Delphinapterus leucas) and Greenland halibut (Reinhardtius hippoglossoides), by season and over 30 years in Cumberland Sound—a system where forage fish capelin (Mallotus villosus) have recently become more available. Using stable isotopes, we illustrate different predator responses to temporal shifts in forage fish availability. On a seasonal cycle, beluga consumed less Greenland halibut and increased consumption of forage fish during summer, contrasting a constant consumption rate of forage fish by Greenland halibut year-round leading to decreased AIGP pressure between predators. Over a decadal scale (1982–2012), annual consumption of forage fish by beluga increased with a concomitant decline in the consumption of Greenland halibut, thereby indicating decreased AIGP pressure between predators in concordance with increased forage fish availability. The long-term changes of AIGP pressure between endemic predators illustrated here highlights climate-driven environmental alterations to interspecific intraguild interactions in the Arctic. |
format |
Text |
author |
Yurkowski, David J. Hussey, Nigel E. Fisk, Aaron T. Imrie, Kendra L. Tallman, Ross F. Ferguson, Steven H. |
author_facet |
Yurkowski, David J. Hussey, Nigel E. Fisk, Aaron T. Imrie, Kendra L. Tallman, Ross F. Ferguson, Steven H. |
author_sort |
Yurkowski, David J. |
title |
Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic |
title_short |
Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic |
title_full |
Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic |
title_fullStr |
Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic |
title_full_unstemmed |
Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic |
title_sort |
temporal shifts in intraguild predation pressure between beluga whales and greenland halibut in a changing arctic |
publisher |
The Royal Society |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719374/ http://www.ncbi.nlm.nih.gov/pubmed/29118241 https://doi.org/10.1098/rsbl.2017.0433 |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) |
geographic |
Arctic Cumberland Sound Greenland |
geographic_facet |
Arctic Cumberland Sound Greenland |
genre |
Arctic Beluga Beluga* Climate change Cumberland Sound Delphinapterus leucas Greenland |
genre_facet |
Arctic Beluga Beluga* Climate change Cumberland Sound Delphinapterus leucas Greenland |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719374/ http://www.ncbi.nlm.nih.gov/pubmed/29118241 http://dx.doi.org/10.1098/rsbl.2017.0433 |
op_rights |
© 2017 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rsbl.2017.0433 |
container_title |
Biology Letters |
container_volume |
13 |
container_issue |
11 |
container_start_page |
20170433 |
_version_ |
1766326041181159424 |