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Titolo:
ALGAL C-14 AND TOTAL CARBON METABOLISMS .2. EXPERIMENTAL-OBSERVATIONSWITH THE DIATOM SKELETONEMA-COSTATUM
Autore:
WILLIAMS PJL; ROBINSON C; SONDERGAARD M; JESPERSEN AM; BENTLEY TL; LEFEVRE D; RICHARDSON K; RIEMANN B;
Indirizzi:
UNIV COLL N WALES,SCH OCEAN SCI MENAI BRIDGE LL59 5EY GWYNEDD WALES UNIV COPENHAGEN,FRESHWATER BIOL LAB DK-3400 HILLEROD DENMARK DANISH INST FISHERIES & MARINE RES DK-2920 CHARLOTTENLUND DENMARK WATER QUAL RES INST DK-2970 HORSHOLM DENMARK
Titolo Testata:
Journal of plankton research
fascicolo: 10, volume: 18, anno: 1996,
pagine: 1961 - 1974
SICI:
0142-7873(1996)18:10<1961:ACATCM>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
INORGANIC CARBON; PHYTOPLANKTON; PHOTOSYNTHESIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
P.J.L. Williams et al., "ALGAL C-14 AND TOTAL CARBON METABOLISMS .2. EXPERIMENTAL-OBSERVATIONSWITH THE DIATOM SKELETONEMA-COSTATUM", Journal of plankton research, 18(10), 1996, pp. 1961-1974

Abstract

Three sets of comparisons of net and gross inorganic carbon assimilation and C-14 uptake were made with an axenic culture of Skeletonema costatum. The comparisons showed that in the physiological window studied (10-20% of the intrinsic generation time and gross photosynthesis/respiration ratios of 2-3), C-14 uptake into the particulate plus the dissolved fractions approximated to net photosynthesis. Rate constants derived from the chemically determined changes were used to parameterize models that accounted for the respiration of photosynthetic productsand for the recycling of respiratory CO2. The conclusion drawn was that over the time scale studied, the C-14 technique was measuring net photosynthesis, consistent with essentially 100% recycling of respiratory CO2. The study has shown that we now possess the basis to make a rigorous analysis of net, gross CO2 fixation and net C-14 uptake, and forms the first step in the development of algorithms for the interpretation of C-14 field observations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/21 alle ore 14:42:19