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Titolo:
Dissolved carbohydrates in Antarctic sea ice
Autore:
Herborg, LM; Thomas, DN; Kennedy, H; Haas, C; Dieckmann, GS;
Indirizzi:
Univ Wales, Sch Ocean Sci, Menai Bridge LL59 5EY, Anglesey, Wales Univ Wales Menai Bridge Anglesey Wales LL59 5EY LL59 5EY, Anglesey, Wales Alfred Wegener Inst Polar & Meeresforsch, D-27570 Bremerhaven, Germany Alfred Wegener Inst Polar & Meeresforsch Bremerhaven Germany D-27570 any
Titolo Testata:
ANTARCTIC SCIENCE
fascicolo: 2, volume: 13, anno: 2001,
pagine: 119 - 125
SICI:
0954-1020(200106)13:2<119:DCIASI>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
WEDDELL SEA; MCMURDO-SOUND; ORGANIC-MATTER; PLATELET ICE; PACK ICE; POLYSACCHARIDE PRODUCTION; MICROBIAL COMMUNITIES; CARBON ASSIMILATION; UNDERLYING WATER; STANDING STOCK;
Keywords:
bacteria; carbon cycling; diatoms; dissolved organic carbon; monocarbohydrates; polycarbohydrates; sea ice;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Thomas, DN Univ Wales, Sch Ocean Sci, Menai Bridge LL59 5EY, Anglesey, Wales Univ Wales Menai Bridge Anglesey Wales LL59 5EY nglesey, Wales
Citazione:
L.M. Herborg et al., "Dissolved carbohydrates in Antarctic sea ice", ANTARCT SCI, 13(2), 2001, pp. 119-125

Abstract

Concentrations of dissolved monocarbohydrates (MCHO) and polycarbohydrates(PCHO) were analysed in a variety of ice habitats from summer Weddell Sea sea ice (surface ponds, ice cores, gap layers and platelet ice). The dissolved organic carbon (DOC) pool in these habitats was also measured and the contribution of carbohydrate to this pool was assessed. The DOC concentrations within all sea ice habitats were high compared to surface seawater concentrations with values up to 958 mu MC being measured. Total carbohydrates (TCHO) were highest in the ice cores and platelet ice samples, up to 31% of the DOC pool, a reflection of the high algal biomass in these two habitat classes. TCHO in the other habitats ranged between 10% and 29% of DOC. The ratios of MCHO to PCHO varied considerably between the ice habitats: in surface ponds and ice cores MCHO was 70% of the TCHO pool, whereas in gap layers and platelet ice there were lower PCHO concentrations resulting in MCHO being 88% of TCHO.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 00:49:10