Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland
Abstract In Greenland, tidewater glaciers discharge turbid subglacial freshwater into fjords, forming plumes near the calving fronts, and these areas serve as an important foraging habitat for seabirds. To investigate the effect of subglacial discharge on the foraging assemblages of surface feeders...
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Oxford University Press (OUP)
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsz213 http://academic.oup.com/icesjms/article-pdf/77/2/711/32881925/fsz213.pdf |
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croxfordunivpr:10.1093/icesjms/fsz213 2023-10-09T21:44:22+02:00 Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland Nishizawa, Bungo Kanna, Naoya Abe, Yoshiyuki Ohashi, Yoshihiko Sakakibara, Daiki Asaji, Izumi Sugiyama, Shin Yamaguchi, Atsushi Watanuki, Yutaka Votier, Stephen MEXT Japanese Ministry of Education, Culture, Sports, Science and Technology MEXT 2019 http://dx.doi.org/10.1093/icesjms/fsz213 http://academic.oup.com/icesjms/article-pdf/77/2/711/32881925/fsz213.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 77, issue 2, page 711-720 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2019 croxfordunivpr https://doi.org/10.1093/icesjms/fsz213 2023-09-22T11:15:36Z Abstract In Greenland, tidewater glaciers discharge turbid subglacial freshwater into fjords, forming plumes near the calving fronts, and these areas serve as an important foraging habitat for seabirds. To investigate the effect of subglacial discharge on the foraging assemblages of surface feeders and divers in a glacial fjord, we conducted boat-based seabird surveys, near-surface zooplankton samplings, and hydrographic measurements at Bowdoin Fjord, northwestern Greenland in July. Foraging surface feeders (black-legged kittiwake Rissa tridactyla, glaucous gull Larus hyperboreus, and northern fulmar Fulmarus glacialis) aggregated within a plume-affected area in front of Bowdoin Glacier. This area was characterized by highly turbid subglacial meltwater and abundant large-sized zooplankton including Calanus hyperboreus, chaetognaths, and ctenophores near the surface. Surface feeders fed on these aggregated prey presumably transported to the surface by strong upwelling of subglacial meltwater. In contrast, divers (little auk Alle alle, thick-billed murre Uria lomvia, and black guillemot Cepphus grylle) foraged outside the fjord, where turbidity was low and jellyfish and Calanus copepods dominated under the influence of Atlantic water. Our study indicates spatial segregation between surface feeders and divers in a glacial fjord; surface feeders are not hindered by turbidity if taking prey at the surface, whereas divers need clear water. Article in Journal/Newspaper Alle alle Black guillemot Black-legged Kittiwake Calanus hyperboreus Cepphus grylle Fulmarus glacialis glacier Glaucous Gull Greenland Larus hyperboreus little auk Northern Fulmar rissa tridactyla thick-billed murre Tidewater Uria lomvia Copepods uria Oxford University Press (via Crossref) Greenland Fulmar ENVELOPE(-46.016,-46.016,-60.616,-60.616) Bowdoin ENVELOPE(-69.317,-69.317,77.683,77.683) Bowdoin Fjord ENVELOPE(-68.521,-68.521,77.598,77.598) ICES Journal of Marine Science 77 2 711 720 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Nishizawa, Bungo Kanna, Naoya Abe, Yoshiyuki Ohashi, Yoshihiko Sakakibara, Daiki Asaji, Izumi Sugiyama, Shin Yamaguchi, Atsushi Watanuki, Yutaka Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract In Greenland, tidewater glaciers discharge turbid subglacial freshwater into fjords, forming plumes near the calving fronts, and these areas serve as an important foraging habitat for seabirds. To investigate the effect of subglacial discharge on the foraging assemblages of surface feeders and divers in a glacial fjord, we conducted boat-based seabird surveys, near-surface zooplankton samplings, and hydrographic measurements at Bowdoin Fjord, northwestern Greenland in July. Foraging surface feeders (black-legged kittiwake Rissa tridactyla, glaucous gull Larus hyperboreus, and northern fulmar Fulmarus glacialis) aggregated within a plume-affected area in front of Bowdoin Glacier. This area was characterized by highly turbid subglacial meltwater and abundant large-sized zooplankton including Calanus hyperboreus, chaetognaths, and ctenophores near the surface. Surface feeders fed on these aggregated prey presumably transported to the surface by strong upwelling of subglacial meltwater. In contrast, divers (little auk Alle alle, thick-billed murre Uria lomvia, and black guillemot Cepphus grylle) foraged outside the fjord, where turbidity was low and jellyfish and Calanus copepods dominated under the influence of Atlantic water. Our study indicates spatial segregation between surface feeders and divers in a glacial fjord; surface feeders are not hindered by turbidity if taking prey at the surface, whereas divers need clear water. |
author2 |
Votier, Stephen MEXT Japanese Ministry of Education, Culture, Sports, Science and Technology MEXT |
format |
Article in Journal/Newspaper |
author |
Nishizawa, Bungo Kanna, Naoya Abe, Yoshiyuki Ohashi, Yoshihiko Sakakibara, Daiki Asaji, Izumi Sugiyama, Shin Yamaguchi, Atsushi Watanuki, Yutaka |
author_facet |
Nishizawa, Bungo Kanna, Naoya Abe, Yoshiyuki Ohashi, Yoshihiko Sakakibara, Daiki Asaji, Izumi Sugiyama, Shin Yamaguchi, Atsushi Watanuki, Yutaka |
author_sort |
Nishizawa, Bungo |
title |
Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland |
title_short |
Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland |
title_full |
Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland |
title_fullStr |
Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland |
title_full_unstemmed |
Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland |
title_sort |
contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of bowdoin fjord, northwestern greenland |
publisher |
Oxford University Press (OUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1093/icesjms/fsz213 http://academic.oup.com/icesjms/article-pdf/77/2/711/32881925/fsz213.pdf |
long_lat |
ENVELOPE(-46.016,-46.016,-60.616,-60.616) ENVELOPE(-69.317,-69.317,77.683,77.683) ENVELOPE(-68.521,-68.521,77.598,77.598) |
geographic |
Greenland Fulmar Bowdoin Bowdoin Fjord |
geographic_facet |
Greenland Fulmar Bowdoin Bowdoin Fjord |
genre |
Alle alle Black guillemot Black-legged Kittiwake Calanus hyperboreus Cepphus grylle Fulmarus glacialis glacier Glaucous Gull Greenland Larus hyperboreus little auk Northern Fulmar rissa tridactyla thick-billed murre Tidewater Uria lomvia Copepods uria |
genre_facet |
Alle alle Black guillemot Black-legged Kittiwake Calanus hyperboreus Cepphus grylle Fulmarus glacialis glacier Glaucous Gull Greenland Larus hyperboreus little auk Northern Fulmar rissa tridactyla thick-billed murre Tidewater Uria lomvia Copepods uria |
op_source |
ICES Journal of Marine Science volume 77, issue 2, page 711-720 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsz213 |
container_title |
ICES Journal of Marine Science |
container_volume |
77 |
container_issue |
2 |
container_start_page |
711 |
op_container_end_page |
720 |
_version_ |
1779309710072086528 |