dc.contributor.author | Drivdal, Magnus | |
dc.contributor.author | Kunisch, Erin | |
dc.contributor.author | Bluhm, Bodil | |
dc.contributor.author | Gradinger, Rolf | |
dc.contributor.author | Falk-Petersen, Stig | |
dc.contributor.author | Berge, Jørgen | |
dc.date.accessioned | 2022-02-04T10:08:23Z | |
dc.date.available | 2022-02-04T10:08:23Z | |
dc.date.issued | 2021-12-15 | |
dc.description.abstract | Arctic sea ice contains a substantial amount of living biota of which part is lost through
melt and export out of the Arctic Ocean every year. It is unclear how populations can
be maintained within the Arctic Ocean. A representative ice inhabitant, the amphipod
Apherusa glacialis was previously assumed to spend its entire life in the sea ice habitat,
hence being dependent on sea ice to complete its life cycle. However, several recent
studies report pelagic occurrences and suggest that seasonal vertical migrations might
be an adaptive life history trait enabling a viable population size in the Arctic Ocean.
In this study we use a particle-tracking model to investigate to what extent vertical
migration might affect the species’ retention in the Arctic Ocean and the sea ice habitat.
The modeled trajectories of A. glacialis were calculated based on ice drift and ocean
currents from a coupled ocean – sea ice model covering the Arctic Ocean. We test
two scenarios: (1) trajectories of A. glacialis that stay attached to the ice or follow
the surface currents if they melt out of the ice and (2) trajectories of A. glacialis that
undertake a seasonal vertical migration to drift with the currents at depth for parts
of the year. In the multi-year model simulations it is assumed that after an initial
period of 2 years A. glacialis that are located outside sea-ice cover each spring will
perish while those located within the ice-covered region will reproduce. The model
results show that a seasonal vertical migration both increases the total number of
individuals and leads to a population distribution within the Arctic Ocean more in line
with previous findings than the results from the non-migrating A. glacialis. Our results
support the hypothesis that a seasonal migration may be an adaptive life history strategy
in this species. | en_US |
dc.identifier.citation | Drivdal, Kunisch E, Bluhm B, Gradinger R, Falk-Petersen S, Berge J. Connections to the Deep: Deep Vertical Migrations, an Important Part of the Life Cycle of Apherusa glacialis, an Arctic Ice-Associated Amphipod. Frontiers in Marine Science. 2021;8:1-14 | en_US |
dc.identifier.cristinID | FRIDAID 1975784 | |
dc.identifier.doi | 10.3389/fmars.2021.772766 | |
dc.identifier.issn | 2296-7745 | |
dc.identifier.uri | https://hdl.handle.net/10037/23920 | |
dc.language.iso | eng | en_US |
dc.publisher | Frontiers Media | en_US |
dc.relation.journal | Frontiers in Marine Science | |
dc.relation.projectID | info:eu-repo/grantAgreement/RCN/POLARPROG/244319/Norway/Arctic Ocean ecosystems - Applied technology, Biological interactions and Consequences in an era of abrupt climate change// | en_US |
dc.relation.projectID | info:eu-repo/grantAgreement/RCN/KLIMAFORSK/300333/Norway/The impact of artificial light on arctic marine organisms and ecosystems during the polar night// | en_US |
dc.relation.projectID | info:eu-repo/grantAgreement/RCN/SFF/223254/Norway/Centre for Autonomous Marine Operations and Systems/AMOS/ | en_US |
dc.rights.accessRights | openAccess | en_US |
dc.rights.holder | Copyright 2021 The Author(s) | en_US |
dc.title | Connections to the Deep: Deep Vertical Migrations, an Important Part of the Life Cycle of Apherusa glacialis, an Arctic Ice-Associated Amphipod | en_US |
dc.type.version | publishedVersion | en_US |
dc.type | Journal article | en_US |
dc.type | Tidsskriftartikkel | en_US |
dc.type | Peer reviewed | en_US |