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Titolo:
DOWNWARD FLUXES OF FATTY-ACIDS AND HYDROCARBONS DURING A PHYTOPLANKTON BLOOM IN THE AUSTRAL SUMMER IN BREID BAY, ANTARCTICA
Autore:
HAYAKAWA K; HANDA N; IKUTA N; FUKUCHI M;
Indirizzi:
LAKE BIWA RES INST,1-10 UCHIDEHAMA OTSU SHIGA 520 JAPAN NATL INST POLAR RES,ITABASHI KU TOKYO 173 JAPAN NAGOYA UNIV,INST HYDROSPHER ATMOSPHER SCI,CHIKUSA KU NAGOYA AICHI 46401 JAPAN
Titolo Testata:
Organic geochemistry
fascicolo: 5, volume: 24, anno: 1996,
pagine: 511 - 521
SICI:
0146-6380(1996)24:5<511:DFOFAH>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
ICE DIATOM COMMUNITIES; NORTH-ATLANTIC OCEAN; SEA-ICE; BRANSFIELD STRAIT; ORGANIC-MATTER; PARTICLE-FLUX; PHAEODACTYLUM-TRICORNUTUM; ECOLOGICAL SIGNIFICANCE; MEDITERRANEAN-SEA; LIPID-COMPOSITION;
Keywords:
SINKING PARTICLES; TIME-SERIES SEDIMENT TRAP; THE ANTARCTIC OCEAN; HYDROCARBONS; FATTY ACIDS; DIATOM BLOOM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
60
Recensione:
Indirizzi per estratti:
Citazione:
K. Hayakawa et al., "DOWNWARD FLUXES OF FATTY-ACIDS AND HYDROCARBONS DURING A PHYTOPLANKTON BLOOM IN THE AUSTRAL SUMMER IN BREID BAY, ANTARCTICA", Organic geochemistry, 24(5), 1996, pp. 511-521

Abstract

Vertical fluxes of fatty acids and hydrocarbons were measured in sinking particles collected by a time-series sediment trap in Breid Bay, Antarctica during the austral summer December 1985 to February 1986. Temporal variations in fatty acid fluxes were related to changes in growth of the overlying diatom population. High contents of 21:6 alkenes and 14:0, 16:0, 16:1, 20:5 acids of the sinking particles supported theidea that the source of the sinking organic matter was mainly diatoms. 21:6 Alkenes and 20:5 acids increased in the late exponential phase of the overlying diatom bloom. Branched C-25 alkenes were detected in the sinking particles. Measurements of changes in the fatty acid composition of the sinking particles were shown to provide useful information on the ecophysiological status of the phytoplankton population as the bloom progressed. Unsaturated fatty acid/saturated fatty acid ratios in the sinking particles indicated active growth of diatoms during the observations. High fluxes of 20:5 acids suggested a late exponential phase and a stationary phase of the overlying diatom bloom. Copyright (C) 1996 Elsevier Science Ltd

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Documento generato il 05/04/20 alle ore 06:50:49