Can seabirds modify carbon burial in fjords?

Jan Marcin Węsławski , Jacek Urbański , Marta Głuchowska , Katarzyna Grzelak , Lech Kotwicki , Sławomir Kwaśniewski , Joanna Legeżyńska , Józef Wiktor , Maria Włodarska-Kowalczuk , Agata Zaborska , Marek Zajączkowski , Lech Stempniewicz

Abstract

Two high latitude fjords of Spitsbergen (Hornsund 77°N and Kongsfjorden 79°N) are regarded as being highly productive (70 g and 50 gC m−2 year−1) and having organic-rich sediments. Hornsund has more organic matter in its sediments (8%), nearly half of it of terrestrial origin, while most of that in Kongsfjorden (5%) comes from fresh, marine sources (microplankton). Analysis of the carbon sources in both fjords shows that a major difference is the much larger seabird population in Hornsund-dominated with over 100 thousands pairs of plankton feeding little auks in Hornsund versus 2 thousand pairs in Kongsfjorden, and marine food consumption estimated as 5573 tonnes of carbon in Hornsund, versus 3047 tonnes in Kongsfjorden during one month of chick feeding period. Seabird colonies supply rich ornithogenic tundra (595 tonnes of C, as against only 266 tonnes of C in the Kongsfjorden tundra). No much of the terrestrial carbon, flushed out or wind-blown to the fjord, is consumed on the seabed – a state of affairs that is reflected by the low metabolic activity of bacteria and benthos and the lower benthic biomass in Hornsund than in Kongsfjorden.
Author Jan Marcin Węsławski
Jan Marcin Węsławski,,
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, Jacek Urbański (FOG / GIS)
Jacek Urbański,,
- GIS Center
, Marta Głuchowska
Marta Głuchowska,,
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, Katarzyna Grzelak
Katarzyna Grzelak,,
-
, Lech Kotwicki
Lech Kotwicki,,
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, Sławomir Kwaśniewski
Sławomir Kwaśniewski,,
-
, Joanna Legeżyńska
Joanna Legeżyńska,,
-
, Józef Wiktor
Józef Wiktor,,
-
, Maria Włodarska-Kowalczuk
Maria Włodarska-Kowalczuk,,
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, Agata Zaborska
Agata Zaborska,,
-
et al.`
Journal seriesOceanologia, ISSN 0078-3234, (A 20 pkt)
Issue year2017
Vol59
No4
Pages603-611
Publication size in sheets0.5
Keywords in EnglishArctic, Svalbard, Fjords, carbon, seabirds
DOIDOI:10.1016/j.oceano.2017.01.006
URL https://doi.org/10.1016/j.oceano.2017.01.006
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); with publication
Score (nominal)20
ScoreMinisterial score = 20.0, 26-02-2018, ArticleFromJournal
Ministerial score (2013-2016) = 20.0, 26-02-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 1.5 (2) - 2016=1.341 (5)
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