Sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans
Abstract Light is a central driver of biological processes and systems. Receding sea ice changes the lightscape of high‐latitude oceans and more light will penetrate into the sea. This affects bottom‐up control through primary productivity and top‐down control through vision‐based foraging. We model...
Published in: | Global Change Biology |
---|---|
Main Authors: | , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2017
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/gcb.13797 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.13797 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.13797 |
id |
crwiley:10.1111/gcb.13797 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/gcb.13797 2024-06-02T08:02:05+00:00 Sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans Langbehn, Tom J. Varpe, Øystein H2020 Marie Skłodowska-Curie Actions 2017 http://dx.doi.org/10.1111/gcb.13797 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.13797 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.13797 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Global Change Biology volume 23, issue 12, page 5318-5330 ISSN 1354-1013 1365-2486 journal-article 2017 crwiley https://doi.org/10.1111/gcb.13797 2024-05-03T11:22:13Z Abstract Light is a central driver of biological processes and systems. Receding sea ice changes the lightscape of high‐latitude oceans and more light will penetrate into the sea. This affects bottom‐up control through primary productivity and top‐down control through vision‐based foraging. We model effects of sea‐ice shading on visual search to develop a mechanistic understanding of how climate‐driven sea‐ice retreat affects predator–prey interactions. We adapt a prey encounter model for ice‐covered waters, where prey‐detection performance of planktivorous fish depends on the light cycle. We use hindcast sea‐ice concentrations (past 35 years) and compare with a future no‐ice scenario to project visual range along two south–north transects with different sea‐ice distributions and seasonality, one through the Bering Sea and one through the Barents Sea. The transect approach captures the transition from sub‐Arctic to Arctic ecosystems and allows for comparison of latitudinal differences between longitudes. We find that past sea‐ice retreat has increased visual search at a rate of 2.7% to 4.2% per decade from the long‐term mean; and for high latitudes, we predict a 16‐fold increase in clearance rate. Top‐down control is therefore predicted to intensify. Ecological and evolutionary consequences for polar marine communities and energy flows would follow, possibly also as tipping points and regime shifts. We expect species distributions to track the receding ice‐edge, and in particular expect species with large migratory capacity to make foraging forays into high‐latitude oceans. However, the extreme seasonality in photoperiod of high‐latitude oceans may counteract such shifts and rather act as a zoogeographical filter limiting poleward range expansion. The provided mechanistic insights are relevant for pelagic ecosystems globally, including lakes where shifted distributions are seldom possible but where predator–prey consequences would be much related. As part of the discussion on photoperiodic implications for ... Article in Journal/Newspaper Arctic Barents Sea Bering Sea Sea ice ice covered waters Wiley Online Library Arctic Barents Sea Bering Sea Global Change Biology 23 12 5318 5330 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Light is a central driver of biological processes and systems. Receding sea ice changes the lightscape of high‐latitude oceans and more light will penetrate into the sea. This affects bottom‐up control through primary productivity and top‐down control through vision‐based foraging. We model effects of sea‐ice shading on visual search to develop a mechanistic understanding of how climate‐driven sea‐ice retreat affects predator–prey interactions. We adapt a prey encounter model for ice‐covered waters, where prey‐detection performance of planktivorous fish depends on the light cycle. We use hindcast sea‐ice concentrations (past 35 years) and compare with a future no‐ice scenario to project visual range along two south–north transects with different sea‐ice distributions and seasonality, one through the Bering Sea and one through the Barents Sea. The transect approach captures the transition from sub‐Arctic to Arctic ecosystems and allows for comparison of latitudinal differences between longitudes. We find that past sea‐ice retreat has increased visual search at a rate of 2.7% to 4.2% per decade from the long‐term mean; and for high latitudes, we predict a 16‐fold increase in clearance rate. Top‐down control is therefore predicted to intensify. Ecological and evolutionary consequences for polar marine communities and energy flows would follow, possibly also as tipping points and regime shifts. We expect species distributions to track the receding ice‐edge, and in particular expect species with large migratory capacity to make foraging forays into high‐latitude oceans. However, the extreme seasonality in photoperiod of high‐latitude oceans may counteract such shifts and rather act as a zoogeographical filter limiting poleward range expansion. The provided mechanistic insights are relevant for pelagic ecosystems globally, including lakes where shifted distributions are seldom possible but where predator–prey consequences would be much related. As part of the discussion on photoperiodic implications for ... |
author2 |
H2020 Marie Skłodowska-Curie Actions |
format |
Article in Journal/Newspaper |
author |
Langbehn, Tom J. Varpe, Øystein |
spellingShingle |
Langbehn, Tom J. Varpe, Øystein Sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans |
author_facet |
Langbehn, Tom J. Varpe, Øystein |
author_sort |
Langbehn, Tom J. |
title |
Sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans |
title_short |
Sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans |
title_full |
Sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans |
title_fullStr |
Sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans |
title_full_unstemmed |
Sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans |
title_sort |
sea‐ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1111/gcb.13797 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.13797 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.13797 |
geographic |
Arctic Barents Sea Bering Sea |
geographic_facet |
Arctic Barents Sea Bering Sea |
genre |
Arctic Barents Sea Bering Sea Sea ice ice covered waters |
genre_facet |
Arctic Barents Sea Bering Sea Sea ice ice covered waters |
op_source |
Global Change Biology volume 23, issue 12, page 5318-5330 ISSN 1354-1013 1365-2486 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/gcb.13797 |
container_title |
Global Change Biology |
container_volume |
23 |
container_issue |
12 |
container_start_page |
5318 |
op_container_end_page |
5330 |
_version_ |
1800746582951329792 |