Analysed by differential spectroscopy, 1208 empirical spectra of light absorption
apl(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 a, chlorophylls b,
chlorophylls c, 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. Apr eliminary 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 a 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.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00