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...
Published in: | Biology Letters |
---|---|
Main Authors: | , , , , , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
The Royal Society
2017
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1098/rsbl.2017.0433 https://royalsocietypublishing.org/doi/pdf/10.1098/rsbl.2017.0433 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsbl.2017.0433 |
id |
crroyalsociety:10.1098/rsbl.2017.0433 |
---|---|
record_format |
openpolar |
spelling |
crroyalsociety:10.1098/rsbl.2017.0433 2024-06-02T08:01:28+00:00 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. Natural Sciences and Engineering Research Council of Canada ArcticNet Government of Nunavut W. Garfield Weston Foundation 2017 http://dx.doi.org/10.1098/rsbl.2017.0433 https://royalsocietypublishing.org/doi/pdf/10.1098/rsbl.2017.0433 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsbl.2017.0433 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Biology Letters volume 13, issue 11, page 20170433 ISSN 1744-9561 1744-957X journal-article 2017 crroyalsociety https://doi.org/10.1098/rsbl.2017.0433 2024-05-07T14:16:51Z 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. Article in Journal/Newspaper Arctic Beluga Beluga* Climate change Cumberland Sound Delphinapterus leucas Greenland The Royal Society Arctic Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Greenland Biology Letters 13 11 20170433 |
institution |
Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
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. |
author2 |
Natural Sciences and Engineering Research Council of Canada ArcticNet Government of Nunavut W. Garfield Weston Foundation |
format |
Article in Journal/Newspaper |
author |
Yurkowski, David J. Hussey, Nigel E. Fisk, Aaron T. Imrie, Kendra L. Tallman, Ross F. Ferguson, Steven H. |
spellingShingle |
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 |
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://dx.doi.org/10.1098/rsbl.2017.0433 https://royalsocietypublishing.org/doi/pdf/10.1098/rsbl.2017.0433 https://royalsocietypublishing.org/doi/full-xml/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_source |
Biology Letters volume 13, issue 11, page 20170433 ISSN 1744-9561 1744-957X |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
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_ |
1800745842143920128 |