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Titolo:
DYNAMIC-MODEL OF PHYTOPLANKTON GROWTH AND ACCLIMATION - RESPONSES OF THE BALANCED GROWTH-RATE AND THE CHLOROPHYLL A-CARBON RATIO TO LIGHT, NUTRIENT-LIMITATION AND TEMPERATURE
Autore:
GEIDER RJ; MACINTYRE HL; KANA TM;
Indirizzi:
MARINE BIOL ASSOC UNITED KINGDOM LAB,CITADEL HILL PLYMOUTH PL1 2PB DEVON ENGLAND UNIV DELAWARE,COLL MARINE STUDIES LEWES DE 19958 UNIV MARYLAND,HORN POINT ENVIRONM LABS CAMBRIDGE MD 21613
Titolo Testata:
Marine ecology. Progress series
fascicolo: 1-3, volume: 148, anno: 1997,
pagine: 187 - 200
SICI:
0171-8630(1997)148:1-3<187:DOPGAA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOTOSYNTHETIC ENERGY-CONVERSION; DIATOM SKELETONEMA-COSTATUM; MARINE SYNECHOCOCCUS WH7803; CHEMICAL-COMPOSITION; LIMITED GROWTH; DARK CYCLE; THALASSIOSIRA-FLUVIATILIS; NITROGEN LIMITATION; CONTINUOUS CULTURE; CELLULAR CARBON;
Keywords:
CHLOROPHYLL A; CHLOROSIS; NUTRIENT-LIMITATION; LIGHT; TEMPERATURE; PHOTOADAPTATION; PHOTOACCLIMATION; PHYTOPLANKTON;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
67
Recensione:
Indirizzi per estratti:
Citazione:
R.J. Geider et al., "DYNAMIC-MODEL OF PHYTOPLANKTON GROWTH AND ACCLIMATION - RESPONSES OF THE BALANCED GROWTH-RATE AND THE CHLOROPHYLL A-CARBON RATIO TO LIGHT, NUTRIENT-LIMITATION AND TEMPERATURE", Marine ecology. Progress series, 148(1-3), 1997, pp. 187-200

Abstract

Acclimation of the photosynthetic apparatus to changes of irradiance,temperature and nutrient availability, involving regulation of the chlorophyll a:carbon ratio (theta), is a universal feature of all phytoplankton studied to date. We derive a dynamic regulatory model that predicts the dependencies of theta and growth rate (mu) on irradiance, daylength, temperature and nutrient availability. The model requires specification of 4 parameters to describe the Light-dependencies of thetaand mu under nutrient-saturating conditions at constant temperature. These are the maximum value of theta (theta(m)), the initial slope of the chl a-specific photosynthesis-light response curve (alpha(chl)), the maximum carbon-specific photosynthesis rate (P-m(C)) and the cost of biosynthesis (zeta). The influences of temperature and nutrient availability are accommodated through their effects on P-m(C). The temperature dependence is described by the slope of an Arrhenius plot and thenutrient dependence is described through the half saturation constant(K-N) of the Monod equation. Fidelity of the model results to empirical studies suggests that microalgal cells adjust theta in response to an imbalance between the rate of Light absorption and the energy demands for photosynthesis and biosynthesis.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 20:14:10