Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes
Tidewater glacier fronts can represent important foraging areas for Arctic predators. Their ecological importance is likely to change in a warmer Arctic. Their profitability and use by consumers are expected to vary in time, but the underlying mechanisms driving such variation remain poorly known. T...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Inter Research
2021
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Online Access: | https://hdl.handle.net/10037/23321 https://doi.org/10.3354/meps13869 |
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ftunivtroemsoe:oai:munin.uit.no:10037/23321 2023-05-15T14:59:17+02:00 Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes Bertrand, Philip Strøm, Hallvard Bêty, Joël Steen, Harald Kohler, Jack Vihtakari, Mikko Van Pelt, Ward Yoccoz, Nigel Gilles Hop, Haakon Harris, Stephanie M. Patrick, Samantha C. Assmy, Philipp Wold, Anette Duarte, Pedro Moholdt, Geir Descamps, Sébastien 2021-10-28 https://hdl.handle.net/10037/23321 https://doi.org/10.3354/meps13869 eng eng Inter Research Marine Ecology Progress Series Bertrand, Strøm, Bêty, Steen, Kohler, Vihtakari, Van Pelt, Yoccoz, Hop, Harris, Patrick, Assmy, Wold, Duarte, Moholdt, Descamps. Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes. Marine Ecology Progress Series. 2021;677:197-208 FRIDAID 1964198 doi:10.3354/meps13869 0171-8630 1616-1599 https://hdl.handle.net/10037/23321 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.3354/meps13869 2021-12-08T23:55:19Z Tidewater glacier fronts can represent important foraging areas for Arctic predators. Their ecological importance is likely to change in a warmer Arctic. Their profitability and use by consumers are expected to vary in time, but the underlying mechanisms driving such variation remain poorly known. The subglacial plume, originating from meltwater discharge, is responsible for the entrainment and transport of zooplankton to the surface, making them more readily available for surface-feeding seabirds. Both discharge and zooplankton abundance are known to fluctuate in time and are thus expected to modulate the foraging profitability of glacier fronts. This study tested the predictions that annual use of glacier fronts by black-legged kittiwakes Rissa tridactyla is positively related to the average glacier discharge and prey biomass in the fjord. To do this, we combined a multiyear dataset of environmental drivers and GPS tracks of birds in Kongsfjorden, Svalbard. Our results confirmed the interannual variation in the use of glacier fronts by kittiwakes; however, contrary to our predictions, these variations were negatively correlated to both glacier discharge and zooplankton abundance. These apparent negative relationships likely reflect non-linear effects and complex interactions between local and regional environmental factors that affect the relative profitability of glacier fronts as foraging areas. Despite their high spatial predictability, glacier fronts may not offer consistent foraging opportunities for marine predators over time. Article in Journal/Newspaper Arctic glacier Kongsfjord* Kongsfjorden rissa tridactyla Svalbard Tidewater Zooplankton University of Tromsø: Munin Open Research Archive Arctic Svalbard Marine Ecology Progress Series 677 197 208 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Bertrand, Philip Strøm, Hallvard Bêty, Joël Steen, Harald Kohler, Jack Vihtakari, Mikko Van Pelt, Ward Yoccoz, Nigel Gilles Hop, Haakon Harris, Stephanie M. Patrick, Samantha C. Assmy, Philipp Wold, Anette Duarte, Pedro Moholdt, Geir Descamps, Sébastien Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Tidewater glacier fronts can represent important foraging areas for Arctic predators. Their ecological importance is likely to change in a warmer Arctic. Their profitability and use by consumers are expected to vary in time, but the underlying mechanisms driving such variation remain poorly known. The subglacial plume, originating from meltwater discharge, is responsible for the entrainment and transport of zooplankton to the surface, making them more readily available for surface-feeding seabirds. Both discharge and zooplankton abundance are known to fluctuate in time and are thus expected to modulate the foraging profitability of glacier fronts. This study tested the predictions that annual use of glacier fronts by black-legged kittiwakes Rissa tridactyla is positively related to the average glacier discharge and prey biomass in the fjord. To do this, we combined a multiyear dataset of environmental drivers and GPS tracks of birds in Kongsfjorden, Svalbard. Our results confirmed the interannual variation in the use of glacier fronts by kittiwakes; however, contrary to our predictions, these variations were negatively correlated to both glacier discharge and zooplankton abundance. These apparent negative relationships likely reflect non-linear effects and complex interactions between local and regional environmental factors that affect the relative profitability of glacier fronts as foraging areas. Despite their high spatial predictability, glacier fronts may not offer consistent foraging opportunities for marine predators over time. |
format |
Article in Journal/Newspaper |
author |
Bertrand, Philip Strøm, Hallvard Bêty, Joël Steen, Harald Kohler, Jack Vihtakari, Mikko Van Pelt, Ward Yoccoz, Nigel Gilles Hop, Haakon Harris, Stephanie M. Patrick, Samantha C. Assmy, Philipp Wold, Anette Duarte, Pedro Moholdt, Geir Descamps, Sébastien |
author_facet |
Bertrand, Philip Strøm, Hallvard Bêty, Joël Steen, Harald Kohler, Jack Vihtakari, Mikko Van Pelt, Ward Yoccoz, Nigel Gilles Hop, Haakon Harris, Stephanie M. Patrick, Samantha C. Assmy, Philipp Wold, Anette Duarte, Pedro Moholdt, Geir Descamps, Sébastien |
author_sort |
Bertrand, Philip |
title |
Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes |
title_short |
Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes |
title_full |
Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes |
title_fullStr |
Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes |
title_full_unstemmed |
Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes |
title_sort |
feeding at the front line: interannual variation in the use of glacier fronts by foraging black-legged kittiwakes |
publisher |
Inter Research |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/23321 https://doi.org/10.3354/meps13869 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic glacier Kongsfjord* Kongsfjorden rissa tridactyla Svalbard Tidewater Zooplankton |
genre_facet |
Arctic glacier Kongsfjord* Kongsfjorden rissa tridactyla Svalbard Tidewater Zooplankton |
op_relation |
Marine Ecology Progress Series Bertrand, Strøm, Bêty, Steen, Kohler, Vihtakari, Van Pelt, Yoccoz, Hop, Harris, Patrick, Assmy, Wold, Duarte, Moholdt, Descamps. Feeding at the front line: Interannual variation in the use of glacier fronts by foraging black-legged kittiwakes. Marine Ecology Progress Series. 2021;677:197-208 FRIDAID 1964198 doi:10.3354/meps13869 0171-8630 1616-1599 https://hdl.handle.net/10037/23321 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.3354/meps13869 |
container_title |
Marine Ecology Progress Series |
container_volume |
677 |
container_start_page |
197 |
op_container_end_page |
208 |
_version_ |
1766331394905079808 |