Received 15 September 1996. Accepted 15 February 1997.
Article first published online: 28 JUN 2008
Journal of Phycology
Volume 33, Issue 3, pages 542–553, June 1997
How to Cite
Serôdio, J., Marques da Silva, J. and Catarino, F. (1997), NONDESTRUCTIVE TRACING OF MIGRATORY RHYTHMS OF INTERTIDAL BENTHIC MICROALGAE USING IN VIVO CHLOROPHYLL A FLUORESCENCE. Journal of Phycology, 33: 542–553. doi: 10.1111/j.0022-3646.1997.00542.x
Abbreviations: a*(z), Optical absorption cross section normalized to Chl a of cells at depth z (m2· g Chl a−1); c(z). sediment Chl a content at depth z (g Chl a· m−3); Chl, chlorophyll; d, distance between the PAM fiberoptics and the sample surface (mm); E0 (d, z), scalar exciting spectral irradiance at depth z, at a distance d + z from the fiberoptics (W · m−2· nm−1); Ed(d, z), Ed, downwelling exciting spectral irradbance at depth z, at a distance d + z from the fiberoptics and at the fiberoptics level (W·m−2· nm−1); F(d), depth-integrated fluorescence intensity emitted by the ensemble of cells present in the sediment, which is detected by the fiberoptics at a distance d from the sediment surface (mV); F(d, z), fluorescence intensity emitted by cells present in a unit volume at depth z, which is detected at the fiberoptics level at a distance d + z from the sediment surface (mV); Fl (d, z), fluorescent radiance flux emitted by the cells present in a unit volume of sediment at depth z, at a distance d + z from the fiberoptics (W·m−3· nm−l); Fo, Fv, FM, dark-level (minimum), variable, and maximum values attainable by Chl a fluorescence intensity, here considered to be measured 1 mm from the sample surface (mV); Fu,(d, z), upwelling fluorescent spectral irradiance emitted at depth z, at a distance d + z from the fiberoptics (W·m−2·nm−1); φF(z), quantum yield of Chl a fluorescence at depth z (quanta emittedquanta absorbed−1); φFo, φFM, dark-level and maximum quantum yield of Chl a fluorescence (quanta emittedquanta absorbed−1); G, factor representing the conversion between detected fluorescent irradiance and fluorometer output (mV·W−1·m2·nm); kair, ksed, attenuation coefticients of exciting light and emitted fluorescence in the air and in the sediment (mm−1); LHCII, light-harvesting complex of phutosystem II; μ(z), average cosine (mean cosine of the average path direction of incident photons); nPSII(z), PSII concentration at depth z (PSII · m−3); PSII, photosystem II; Q(z), fractional reduction of emitted fluorescence due to intracellular reabsorption at depth z, rex, rem, fractional reflexion losses of exciting light and emitted fluorescence at the sediment-air (or sediment-water) interface; R(z), irradiance reflectance (ratio of upward to downward irradiance) at depth z; σPSII (z), functional absorption cross section of energy-absorbing pigments in LHCII at depth z (m2ΨII−1); z, depth below sediment surface (mm).
- Issue published online: 28 JUN 2008
- Article first published online: 28 JUN 2008
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