Mathematical formulation of the relationship between photosynthesis and light for phytoplankton

Jassby, Alan D.; Platt, Trevor

doi:10.4319/lo.1976.21.4.0540

Cited by 1,799 publications

(1,166 citation statements)

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“…The initial slope of the P vs I plots, a, and the photosynthetic capacity, P,,,, were derived from a hyperbolic tangent fit (Jassby & Platt 1976) through 12 or more data points. Oxygen flash yields (PSUo,) were measured with repetitive short (< 3 vs) xenon flashes (GenRad Stroboslave 1539A) with a Rank Brothers electrode as described by Falkowski et al (1981).…”

Section: Methodsmentioning

confidence: 99%

Physiological responses of a marine planktonic diatom to transitions in growth irradiance

Post¹,

Dubinsky²,

Wyman³

et al. 1985

Mar. Ecol. Prog. Ser.

107

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ABSTWCT: The time course of adaptation to changes in growth irradiance was studied in the marine diatom Thalassiosira weisflogij. Irradiance changes were from 72 to 593 uE m-2 S-' (L + H) and from 593 to 72 pE S-' (H + L). In steady state, high-light (HL) grown cells were characterized by low pigment contents and a low in vivoabsorbance. Light saturated photosynthesis, expressed on a per cell basis, was higher for low-light (LL) cells, but on a Chl a basis photosynthesis of HL cells was higher. PSU,, sizes were not significantly different for HL and LL cells. In both transient states the carbohydrate pool was most dynamic and responded fastest to a change in ~rradiance. It was concluded that the carbohydrate pool serves as an energy and carbon reservoir buffering the cells from changes in irradiance and allowing other cellular properties to adjust to the new situation. The timescales of changes in Chl a cell-' and photosynthetic activities differed considerably: by a factor of 3 in the L -, H transition and by a factor of 30 in the H + L transition. Irradiance transitions did not lead to marked changes in protein cell-'.

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Section: Methodsmentioning

confidence: 99%

Physiological responses of a marine planktonic diatom to transitions in growth irradiance

Post¹,

Dubinsky²,

Wyman³

et al. 1985

Mar. Ecol. Prog. Ser.

107

View full text Add to dashboard Cite

show abstract

“…The photosynthesis versus irradiance curves (P vs I curves) were fitted to the data according the Jasby and Platt model [25]. When photoinhibition occurred, the model of Platt et al [38] was used.…”

Section: Sampling Sitementioning

confidence: 99%

“…P max , E k , and a have been estimated from the fitting of AGP versus light intensity with the model of Jasby and Platt [25] (see Methods). The highest a (0.106 mol O 2 mol photons )1 ) was observed for the rnicrobialite sampled at 19 m depth (Phormidium sp.…”

Section: Oxygen Processes Under Various Light Intensitiesmentioning

confidence: 99%

Irradiance Regulation of Photosynthesis and Respiration in Modern Marine Microbialites Built by Benthic Cyanobacteria in a Tropical Lagoon (New Caledonia)

2005

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Microbialites are organosedimentary deposits that have built up as a result of the growth and binding of detrital sediment by a benthic microbial community. This study focuses on microbialites built by monospecific populations of cyanobacteria in the south-west lagoon of New Caledonia, where they have been observed down to 20-25 m depth. The aim was to study their photosynthetic and respiratory responses to various light intensities. The Phormidium sp. TK1 microbialite was collected at 19 m depth and the P. crosbyanum (Tilden) microbialite was collected at 0.5 and 13 m depth. Phormidium sp. TK1 showed all the characteristic features of a low-light adapted species. The initial slope of the Photosynthesis versus Irradiance curve for this microbialite was close to the maximum quantum yield indicating an efficient light absorption and utilization at low light. The photosynthesis maximum was located 0.2-0.4 mm below the surface and did not shift with changing light intensity. Respiration rates were low and not enhanced by light; photoinhibition was observed at higher light intensities. In Phormidium crosbyanum (Tilden) microbialites, the photosynthesis maximum shifted downward to lower depths with increasing light, probably as a result of phototactic migration of cyanobacterial filaments, and light-enhanced respiration was observed at light intensities above light saturation. The photosynthetic parameters measured in P. crosbyanum indicate that P. crosbyanum is capable of photo-acclimation at high light intensities. The gross productivity of the different microbialites was comparable to values measured in cyanobacterial stromatolites observed in other shallow environments. However, the microbialites studied here were characterized by a lower respiration / production ratio which indicates a higher growth efficiency.

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“…There were several studies on the relationships between the light or light combined with other factors and phytoplankton growth (Jassby and Platt, 1976;Mur et al, 1977;Huisman and Weissing, 1994;Litchman, 1998;Flder and Burns, 2005;Carneiro et al, 2009;Chen et al, 2009a;Mehnert et al, 2010;Kunath et al, 2012), however, the general results and conclusions from most of these studies were conducted only in laboratory and need to be further confirmed under field conditions. In the literatures, light shading was occasionally used for the control of phytoplankton in drinking water sources (Kojima, 2000;Chen et al, 2009b;Wan and Zhu, 2009).…”

Section: Introductionmentioning

confidence: 99%

Influence of sunlight on the proliferation of cyanobacterial blooms and its potential applications in Lake Taihu, China

Zhou

Chen

Shan

et al. 2014

Journal of Environmental Sciences

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Mathematical formulation of the relationship between photosynthesis and light for phytoplankton

Cited by 1,799 publications

References 10 publications

Physiological responses of a marine planktonic diatom to transitions in growth irradiance

Physiological responses of a marine planktonic diatom to transitions in growth irradiance

Irradiance Regulation of Photosynthesis and Respiration in Modern Marine Microbialites Built by Benthic Cyanobacteria in a Tropical Lagoon (New Caledonia)

Influence of sunlight on the proliferation of cyanobacterial blooms and its potential applications in Lake Taihu, China

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