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Decomposition study of in vivo phytoplankton absorption spectra aimed at identifying the pigments and the phytoplankton group in complex case 2 coastal waters of the Arabian Sea

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Title Decomposition study of in vivo phytoplankton absorption spectra aimed at identifying the pigments and the phytoplankton group in complex case 2 coastal waters of the Arabian Sea
Not Available
 
Creator Shaju, S.S.
Minu, P.
Srikanth, A.S.
Ashraf, P.M.
Vijayan, A.K.
Meenakumari, B.
 
Subject Total particulate absorption
Phytoplankton specific absorption coefficient
Packaging effect
Derivative analysis
 
Description Not Available
Phytoplankton modify the optical properties of the seawater by altering the subsurface light field. Information
on the accessory pigments present in the phytoplankton helps to differentiate major phytoplankton classes or
taxonomic groups. The variability in the absorption spectra of phytoplankton and particulate matter of case 2 coastal waters of the Southeastern Arabian Sea were studied from June 2010 to November 2011. The phytoplankton specific absorption coefficient, at 440 nm and 675 nm, a*ph (440) and a*ph (675) varied from 0.018 to 0.32 m2 mg-1 and from 0.0005 to 0.16 m2 mg-1, respectively. The 4th derivative spectra omputed for each in vivo absorption spectrum showed that the amplitude of maxima obtained is proportional to the concentration of the chromoprotein which absorbed that wavelength. Regression of pigment concentration against the 4th derivative spectral coefficient showed that the measurements of particulate absorption could provide quantitative information on chlorophyll a and other accessory pigment concentrations. Fucoxanthin and diadinoxanthin, the carotenoid pigments found in the diatoms were identified from the derivatives peaks. The study demonstrates the utility of using the 4th derivative analysis as a tool to identify the dominating phytoplankton group and its pigment composition
Not Available
 
Date 2018-10-09T04:34:03Z
2018-10-09T04:34:03Z
2015-09-01
 
Type Research Paper
 
Identifier Shaju, S.S.,Minu, P.,Srikanth, A.S.,Ashraf, P.M.,Vijayan, A.K. and Meenakumari, B.(2015)-Decomposition study of in vivo phytoplankton absorption spectra aimed at identifying the pigments and the phytoplankton group in complex case 2 coastal waters of the Arabian Sea, Oceanological and Hydrobiological Studies, 44( 3): 282-293.
1730-413X
http://krishi.icar.gov.in/jspui/handle/123456789/7658
 
Language English
 
Relation Not Available;
 
Publisher Faculty of Oceanography and Geography, University of Gdansk/Springer