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Diatom biomass as carbon measured on water bottle samples at station PS58/092-3

Authors
Publisher
PANGAEA
Publication Date
Identifiers
DOI: 10.1594/pangaea.323714
Keywords
  • Actinocyclus Curvatulus
  • Biomass As Carbon
  • Ant-Xviii/2
  • Asteromphalus Hookeri
  • Biomass As Carbon
  • Asteromphalus Hyalinus
  • Biomass As Carbon
  • Azpeitia Tabularis
  • Biomass As Carbon
  • Calculated From Biovolume (Edler
  • 1979
  • The Baltic Marine Biologist Pub 5)
  • Chaetoceros Aequatoriale
  • Biomass As Carbon
  • Chaetoceros Atlanticus
  • Biomass As Carbon
  • Chaetoceros Bulbosus
  • Biomass As Carbon
  • Chaetoceros Convolutus
  • Biomass As Carbon
  • Chaetoceros Curvisetus
  • Biomass As Carbon
  • Chaetoceros Dichaeta
  • Biomass As Carbon
  • Chaetoceros Neglectus
  • Biomass As Carbon
  • Chaetoceros Peruvianus
  • Biomass As Carbon
  • Chaetoceros Spp
  • Biomass As Carbon
  • Corethron Inerme
  • Biomass As Carbon
  • Corethron Pennatum
  • Biomass As Carbon
  • Ctd/Rosette
  • Ctd128
  • Cylindrotheca Closterium
  • Biomass As Carbon
  • Dactyliosolen Antarcticus
  • Biomass As Carbon
  • Diatoms
  • Centrales
  • Biomass As Carbon
  • Dictyocha Speculum
  • Biomass As Carbon
  • Eisenex
  • Eucampia Antarctica
  • Biomass As Carbon
  • European Iron Enrichment Experiment In The Southern Ocean
  • Fragilariopsis Kerguelensis
  • Biomass As Carbon
  • Fragilariopsis Obliquecostata
  • Biomass As Carbon
  • Fragilariopsis Rhombica
  • Biomass As Carbon
  • Guinardia Cylindrus
  • Biomass As Carbon
  • Guinardia Delicatula
  • Biomass As Carbon
  • Haslea Sp
  • Biomass As Carbon
  • Leptocylindrus Mediterraneus
  • Biomass As Carbon
  • Membraneis Imposter
  • Biomass As Carbon
  • Navicula Sp
  • Biomass As Carbon
  • Nitzschia Bicapitata
  • Biomass As Carbon
  • Nitzschia Sp
  • Biomass As Carbon
  • Pleurosigma Atlanticus
  • Biomass As Carbon
  • Polarstern
  • Proboscia Alata
  • Biomass As Carbon
  • Ps58/092-3
  • Ps58 Eisenex
  • Pseudo-Nitzschia Heimii
  • Biomass As Carbon
  • Pseudo-Nitzschia Lineola
  • Biomass As Carbon
  • Pseudo-Nitzschia Prolongatoides
  • Biomass As Carbon
  • Pseudo-Nitzschia Turgidula
  • Biomass As Carbon
  • Pseudo-Nitzschia Turgiduloides
  • Biomass As Carbon
  • Rhizosolenia Chunii
  • Biomass As Carbon
  • Rhizosolenia Curvata
  • Biomass As Carbon
  • Rhizosolenia Hebetata Forma Semispina
  • Biomass As Carbon
  • South Atlantic
  • Thalassionema Nitzschioides
  • Biomass As Carbon
  • Thalassionema Nitzschioides Var
  • Lanceolata
  • Biomass As Carbon
  • Thalassiosira Gracilis
  • Biomass As Carbon
  • Thalassiosira Lentiginosa
  • Biomass As Carbon
  • Thalassiosira Oestrupii
  • Biomass As Carbon
  • Thalassiosira Oliverana
  • Biomass As Carbon
  • Thalassiosira Tumida
  • Biomass As Carbon
  • Thalassiothrix Antarctica
  • Biomass As Carbon
Disciplines
  • Biology

Abstract

Floating Ice-Algal Aggregates below Melting Arctic Sea Ice Philipp Assmy1*, Jens K. Ehn2, Mar Fernández-Méndez3,4, Haakon Hop1, Christian Katlein3, Arild Sundfjord1, Katrin Bluhm5, Malin Daase1, Anja Engel6, Agneta Fransson1, Mats A. Granskog1, Stephen R. Hudson1, Svein Kristiansen7, Marcel Nicolaus3, Ilka Peeken3,8, Angelika H. H. Renner1, Gunnar Spreen1, Agnieszka Tatarek9, Jozef Wiktor9 1 Norwegian Polar Institute, Fram Centre, Tromsø, Norway, 2 University of Manitoba, Centre for Earth Observation Science, Winnipeg, Canada, 3 Alfred- Wegener-Institut Helmholtz-Zentrum fùr Polar- und Meeresforschung, Bremerhaven, Germany, 4 Max Planck Institute for Marine Microbiology, Bremen, Germany, 5 Akvaplan-niva, Fram Centre, Tromsø, Norway, 6 GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, 7 Department of Arctic and Marine Biology, University of Tromsø, Tromsø, Norway, 8 MARUM - Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany, 9 Institute of Oceanology, Polish Academy of Science, Sopot, Poland Abstract During two consecutive cruises to the Eastern Central Arctic in late summer 2012, we observed floating algal aggregates in the melt-water layer below and between melting ice floes of first-year pack ice. The macroscopic (1-15 cm in diameter) aggregates had a mucous consistency and were dominated by typical ice-associated pennate diatoms embedded within the mucous matrix. Aggregates maintained buoyancy and accumulated just above a strong pycnocline that separated meltwater and seawater layers. We were able, for the first time, to obtain quantitative abundance and biomass estimates of these aggregates. Although their biomass and production on a square metre basis was small compared to ice-algal blooms, the floating ice-algal aggregates supported high levels of biological activity on the scale of the individual aggregate. In addition they constituted a food source for the ice-associated fauna as revealed by pigments indicative of zooplankton grazing, hig

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