Multi-Parametric Relationships between PAM Measurements and Carbon Incorporation, an In Situ Approach. Napoléon, C. & Claquin, P. 7(7):e40284. Number: 7![Multi-Parametric Relationships between PAM Measurements and Carbon Incorporation, an In Situ Approach [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Primary production (PP) in the English Channel was measured using 13C uptake and compared to the electron transport rate (ETR) measured using PAM (pulse amplitude modulated fluorometer). The relationship between carbon incorporation (Pobs) and ETR was not linear but logarithmic. This result can be explained by alternative electron sinks at high irradiance which protect the phytoplankton from photoinhibition. A multi-parametric model was developed to estimate PP by ETR. This approach highlighted the importance of taking physicochemical parameters like incident light and nutrient concentrations into account. The variation in the ETR/Pobs ratio as a function of the light revealed different trends which were characterized by three parameters (Rmax, the maximum value of ETR/Pobs; ERmax, the light intensity at which Rmax is measured; γ the initial slope of the curve). Based on the values of these three parameters, data were divided into six groups which were highly dependent on the seasons and on the physicochemical conditions. Using the multi-parametric model which we defined by Pobs and ETR measurements at low frequencies, the high frequency measurements of ETR enabled us to estimate the primary production capacity between November 2009 and December 2010 at high temporal and spatial scales.
@article{napoleon_multi-parametric_2012,
title = {Multi-Parametric Relationships between {PAM} Measurements and Carbon Incorporation, an In Situ Approach},
volume = {7},
issn = {1932-6203},
url = {https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0040284},
doi = {10.1371/journal.pone.0040284},
abstract = {Primary production ({PP}) in the English Channel was measured using 13C uptake and compared to the electron transport rate ({ETR}) measured using {PAM} (pulse amplitude modulated fluorometer). The relationship between carbon incorporation (Pobs) and {ETR} was not linear but logarithmic. This result can be explained by alternative electron sinks at high irradiance which protect the phytoplankton from photoinhibition. A multi-parametric model was developed to estimate {PP} by {ETR}. This approach highlighted the importance of taking physicochemical parameters like incident light and nutrient concentrations into account. The variation in the {ETR}/Pobs ratio as a function of the light revealed different trends which were characterized by three parameters (Rmax, the maximum value of {ETR}/Pobs; {ERmax}, the light intensity at which Rmax is measured; γ the initial slope of the curve). Based on the values of these three parameters, data were divided into six groups which were highly dependent on the seasons and on the physicochemical conditions. Using the multi-parametric model which we defined by Pobs and {ETR} measurements at low frequencies, the high frequency measurements of {ETR} enabled us to estimate the primary production capacity between November 2009 and December 2010 at high temporal and spatial scales.},
pages = {e40284},
number = {7},
journaltitle = {{PLOS} {ONE}},
shortjournal = {{PLOS} {ONE}},
author = {Napoléon, Camille and Claquin, Pascal},
urldate = {2019-04-16},
date = {2012-07-20},
langid = {english},
note = {Number: 7},
keywords = {Phytoplankton, Sea water, Principal component analysis, Nitrates, Photons, Carbon fixation, Light, Photoinhibition}
}
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