Spectra of light absorption by phytoplankton pigments in the Baltic; conclusions to be drawn from a Gaussian analysis of empirical data
Analysed by differential spectroscopy, 1208 empirical spectra of light absorption <i>a<sub>pl</sub></i>(λ) by Baltic phytoplankton were spectrally decomposed into 26 elementary Gaussian component bands. At the same time the composition and concentrations of ea...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2004-12-01
|
Series: | Oceanologia |
Subjects: | |
Online Access: | http://www.iopan.gda.pl/oceanologia/46_4.html#A5 |
id |
doaj-66e770404afc4f1b9315203dae234c1a |
---|---|
record_format |
Article |
spelling |
doaj-66e770404afc4f1b9315203dae234c1a2020-11-25T00:16:47ZengElsevierOceanologia0078-32342004-12-01464533555Spectra of light absorption by phytoplankton pigments in the Baltic; conclusions to be drawn from a Gaussian analysis of empirical dataDariusz FicekS³awomir KaczmarekJoanna Stoñ-EgiertBogdan Wo¼niakRoman MajchrowskiJerzy DeraAnalysed by differential spectroscopy, 1208 empirical spectra of light absorption <i>a<sub>pl</sub></i>(λ) by Baltic phytoplankton were spectrally decomposed into 26 elementary Gaussian component bands. At the same time the composition and concentrations of each of the 5 main groups of pigments (chlorophylls <i>a</i>, chlorophylls <i>b</i>, chlorophylls <i>c</i>, photosynthetic carotenoids and photoprotecting carotenoids) were analysed in 782 samples by HPLC. Inspection of the correlations between the intensities of the 26 elementary absorption bands and the concentrations of the pigment groups resulted in given elementary bands being attributed to particular pigment groups and the spectra of the mass-specific absorption coefficients established for these pigment groups. Moreover, balancing the absorption effects due to these 5 pigment groups against the overall absorption spectra of phytoplankton suggested the presence of a sixth group of pigments, as yet unidentified (UP), undetected by HPLC. A preliminary mathematical description of the spectral absorption properties of these UP was established. Like some forms of phycobilins, these pigments are strong absorbers in the 450-650 nm spectral region. The packaging effect of pigments in Baltic phytoplankton was analysed statistically, then correlated with the concentration of chlorophyll <i>a</i> in Baltic water. As a result, a Baltic version of the algorithm of light absorption by phytoplankton could be developed. This algorithm can be applied to estimate overall phytoplankton absorption spectra and their components due to the various groups of pigments from a knowledge of their concentrations in Baltic water.http://www.iopan.gda.pl/oceanologia/46_4.html#A5Bio-opticsPhytoplankton pigmentsLight absorptionCase 2 watersRemote sensing algorithmBaltic Sea |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dariusz Ficek S³awomir Kaczmarek Joanna Stoñ-Egiert Bogdan Wo¼niak Roman Majchrowski Jerzy Dera |
spellingShingle |
Dariusz Ficek S³awomir Kaczmarek Joanna Stoñ-Egiert Bogdan Wo¼niak Roman Majchrowski Jerzy Dera Spectra of light absorption by phytoplankton pigments in the Baltic; conclusions to be drawn from a Gaussian analysis of empirical data Oceanologia Bio-optics Phytoplankton pigments Light absorption Case 2 waters Remote sensing algorithm Baltic Sea |
author_facet |
Dariusz Ficek S³awomir Kaczmarek Joanna Stoñ-Egiert Bogdan Wo¼niak Roman Majchrowski Jerzy Dera |
author_sort |
Dariusz Ficek |
title |
Spectra of light absorption by phytoplankton pigments in the Baltic; conclusions to be drawn from a Gaussian analysis of empirical data |
title_short |
Spectra of light absorption by phytoplankton pigments in the Baltic; conclusions to be drawn from a Gaussian analysis of empirical data |
title_full |
Spectra of light absorption by phytoplankton pigments in the Baltic; conclusions to be drawn from a Gaussian analysis of empirical data |
title_fullStr |
Spectra of light absorption by phytoplankton pigments in the Baltic; conclusions to be drawn from a Gaussian analysis of empirical data |
title_full_unstemmed |
Spectra of light absorption by phytoplankton pigments in the Baltic; conclusions to be drawn from a Gaussian analysis of empirical data |
title_sort |
spectra of light absorption by phytoplankton pigments in the baltic; conclusions to be drawn from a gaussian analysis of empirical data |
publisher |
Elsevier |
series |
Oceanologia |
issn |
0078-3234 |
publishDate |
2004-12-01 |
description |
Analysed by differential spectroscopy, 1208 empirical spectra of light absorption <i>a<sub>pl</sub></i>(λ) by Baltic phytoplankton were spectrally decomposed into 26 elementary Gaussian component bands. At the same time the composition and concentrations of each of the 5 main groups of pigments (chlorophylls <i>a</i>, chlorophylls <i>b</i>, chlorophylls <i>c</i>, photosynthetic carotenoids and photoprotecting carotenoids) were analysed in 782 samples by HPLC. Inspection of the correlations between the intensities of the 26 elementary absorption bands and the concentrations of the pigment groups resulted in given elementary bands being attributed to particular pigment groups and the spectra of the mass-specific absorption coefficients established for these pigment groups. Moreover, balancing the absorption effects due to these 5 pigment groups against the overall absorption spectra of phytoplankton suggested the presence of a sixth group of pigments, as yet unidentified (UP), undetected by HPLC. A preliminary mathematical description of the spectral absorption properties of these UP was established. Like some forms of phycobilins, these pigments are strong absorbers in the 450-650 nm spectral region. The packaging effect of pigments in Baltic phytoplankton was analysed statistically, then correlated with the concentration of chlorophyll <i>a</i> in Baltic water. As a result, a Baltic version of the algorithm of light absorption by phytoplankton could be developed. This algorithm can be applied to estimate overall phytoplankton absorption spectra and their components due to the various groups of pigments from a knowledge of their concentrations in Baltic water. |
topic |
Bio-optics Phytoplankton pigments Light absorption Case 2 waters Remote sensing algorithm Baltic Sea |
url |
http://www.iopan.gda.pl/oceanologia/46_4.html#A5 |
work_keys_str_mv |
AT dariuszficek spectraoflightabsorptionbyphytoplanktonpigmentsinthebalticconclusionstobedrawnfromagaussiananalysisofempiricaldata AT s3awomirkaczmarek spectraoflightabsorptionbyphytoplanktonpigmentsinthebalticconclusionstobedrawnfromagaussiananalysisofempiricaldata AT joannastonegiert spectraoflightabsorptionbyphytoplanktonpigmentsinthebalticconclusionstobedrawnfromagaussiananalysisofempiricaldata AT bogdanwo1⁄4niak spectraoflightabsorptionbyphytoplanktonpigmentsinthebalticconclusionstobedrawnfromagaussiananalysisofempiricaldata AT romanmajchrowski spectraoflightabsorptionbyphytoplanktonpigmentsinthebalticconclusionstobedrawnfromagaussiananalysisofempiricaldata AT jerzydera spectraoflightabsorptionbyphytoplanktonpigmentsinthebalticconclusionstobedrawnfromagaussiananalysisofempiricaldata |
_version_ |
1725382728476524544 |