Supplementary diet components of little auk chicks in two contrasting regions on the West Spitsbergen coast
The complete diet composition structure of the most numerous planktivorous sea bird, little auk (Alle alle), in the European Arctic, is still not fully recognized. Although regular constituents of little auk chick diets, the copepods, Calanus glacialis and C. finmarchicus have been previously relati...
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ftpubmed:oai:pubmedcentral.nih.gov:4459656 2023-05-15T13:16:19+02:00 Supplementary diet components of little auk chicks in two contrasting regions on the West Spitsbergen coast Boehnke, Rafał Gluchowska, Marta Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Karnovsky, Nina J. Walkusz, Wojciech Kwasniewski, Slawomir Błachowiak-Samołyk, Katarzyna 2014-09-26 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459656/ https://doi.org/10.1007/s00300-014-1568-9 en eng Springer Berlin Heidelberg http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459656/ http://dx.doi.org/10.1007/s00300-014-1568-9 © The Author(s) 2014 Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. CC-BY Short Note Text 2014 ftpubmed https://doi.org/10.1007/s00300-014-1568-9 2015-06-14T00:14:08Z The complete diet composition structure of the most numerous planktivorous sea bird, little auk (Alle alle), in the European Arctic, is still not fully recognized. Although regular constituents of little auk chick diets, the copepods, Calanus glacialis and C. finmarchicus have been previously relatively well described, more taxa were frequent ingredients of the bird’s meals. Therefore, the role of the little auks supplementary diet components (SDCs) at two colonies in the Svalbard Archipelago, Hornsund and Magdalenefjorden, in 2007–2009, is a main subject of this comparative study. Because the SDCs often consisted of scarce but large zooplankters, this investigation was focused on biomass as a proxy of the SDCs’ energy input. Although the total biomass of the food delivered to chicks in both colonies was similar, in Magdalenefjorden, the proportion of SDCs was twice that found in Hornsund. The main SDCs in Hornsund were Decapoda larvae (with predominating Pagurus pubescens) and Thysanoessa inermis, whereas the main SDCs in Magdalenefjorden were C. hyperboreus and Apherusa glacialis. Previous investigations, which indicated lipid richness of SDCs, together with our ecological results from the colonies, suggest that this category might play a compensatory role in little auk chick diets. The ability to forage on diverse taxa may help the birds to adapt to ongoing Arctic ecosystem changes. Text Alle alle Arctic Calanus glacialis Hornsund little auk Magdalenefjord* Svalbard Copepods Spitsbergen Thysanoessa inermis PubMed Central (PMC) Arctic Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Magdalenefjorden ENVELOPE(11.010,11.010,79.569,79.569) Svalbard Svalbard Archipelago Polar Biology 38 2 261 267 |
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Open Polar |
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PubMed Central (PMC) |
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ftpubmed |
language |
English |
topic |
Short Note |
spellingShingle |
Short Note Boehnke, Rafał Gluchowska, Marta Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Karnovsky, Nina J. Walkusz, Wojciech Kwasniewski, Slawomir Błachowiak-Samołyk, Katarzyna Supplementary diet components of little auk chicks in two contrasting regions on the West Spitsbergen coast |
topic_facet |
Short Note |
description |
The complete diet composition structure of the most numerous planktivorous sea bird, little auk (Alle alle), in the European Arctic, is still not fully recognized. Although regular constituents of little auk chick diets, the copepods, Calanus glacialis and C. finmarchicus have been previously relatively well described, more taxa were frequent ingredients of the bird’s meals. Therefore, the role of the little auks supplementary diet components (SDCs) at two colonies in the Svalbard Archipelago, Hornsund and Magdalenefjorden, in 2007–2009, is a main subject of this comparative study. Because the SDCs often consisted of scarce but large zooplankters, this investigation was focused on biomass as a proxy of the SDCs’ energy input. Although the total biomass of the food delivered to chicks in both colonies was similar, in Magdalenefjorden, the proportion of SDCs was twice that found in Hornsund. The main SDCs in Hornsund were Decapoda larvae (with predominating Pagurus pubescens) and Thysanoessa inermis, whereas the main SDCs in Magdalenefjorden were C. hyperboreus and Apherusa glacialis. Previous investigations, which indicated lipid richness of SDCs, together with our ecological results from the colonies, suggest that this category might play a compensatory role in little auk chick diets. The ability to forage on diverse taxa may help the birds to adapt to ongoing Arctic ecosystem changes. |
format |
Text |
author |
Boehnke, Rafał Gluchowska, Marta Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Karnovsky, Nina J. Walkusz, Wojciech Kwasniewski, Slawomir Błachowiak-Samołyk, Katarzyna |
author_facet |
Boehnke, Rafał Gluchowska, Marta Wojczulanis-Jakubas, Katarzyna Jakubas, Dariusz Karnovsky, Nina J. Walkusz, Wojciech Kwasniewski, Slawomir Błachowiak-Samołyk, Katarzyna |
author_sort |
Boehnke, Rafał |
title |
Supplementary diet components of little auk chicks in two contrasting regions on the West Spitsbergen coast |
title_short |
Supplementary diet components of little auk chicks in two contrasting regions on the West Spitsbergen coast |
title_full |
Supplementary diet components of little auk chicks in two contrasting regions on the West Spitsbergen coast |
title_fullStr |
Supplementary diet components of little auk chicks in two contrasting regions on the West Spitsbergen coast |
title_full_unstemmed |
Supplementary diet components of little auk chicks in two contrasting regions on the West Spitsbergen coast |
title_sort |
supplementary diet components of little auk chicks in two contrasting regions on the west spitsbergen coast |
publisher |
Springer Berlin Heidelberg |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459656/ https://doi.org/10.1007/s00300-014-1568-9 |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) ENVELOPE(11.010,11.010,79.569,79.569) |
geographic |
Arctic Hornsund Magdalenefjorden Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Hornsund Magdalenefjorden Svalbard Svalbard Archipelago |
genre |
Alle alle Arctic Calanus glacialis Hornsund little auk Magdalenefjord* Svalbard Copepods Spitsbergen Thysanoessa inermis |
genre_facet |
Alle alle Arctic Calanus glacialis Hornsund little auk Magdalenefjord* Svalbard Copepods Spitsbergen Thysanoessa inermis |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459656/ http://dx.doi.org/10.1007/s00300-014-1568-9 |
op_rights |
© The Author(s) 2014 Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00300-014-1568-9 |
container_title |
Polar Biology |
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38 |
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2 |
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261 |
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267 |
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1766273481434988544 |