Biomarker pigment signatures in Cochin back water system e A tropical estuary south west coast of India

Content Provider	CUSAT-Thesis
Author	Sujatha, C. H. Aneeshkumar, N.
Abstract	Sedimentary biomarker pigments around Cochin estuary situated in the southwest coast of India weredetermined by HPLC. Fucoxanthin, an indicator of diatom was observed to be the most abundantcarotenoid pigment in the estuary. Dinoflagellate derived carotenoid pigment peridinin was confined inthe southern part of estuary and zeaxanthin pigment indicative of cyanobacteria were more found insites influenced by anthropogenic activities. One compound having close similarity to fucoxanthin wasalso detected. Alloxanthin (cryptophyceae), chl b (green algae), canthaxanthin, neoxanthin, lutein andperidinin isomer were also detected by spectra and corresponding algal class were identified. The highestconcentration of chl a (11.01 mg g 1) found near to the anthropogenic affected area while the lowest chla (0.65 mg g 1) was recorded in industrial area. Degradation products of chl a, such as pheophorbide andpheophytin were observed and principal mode of mechanism of degradation were derived. Higherpheopigments content than chl a, reflects a density trapping of dead cells and early degradation ofphytopigments from grazing activities
File Format	PDF
Language	English
Publisher	ELSEVIER
Access Restriction	Open
Subject Keyword	sediment phytoplankton biomarker pigments degradation HPLC
Content Type	Text
Resource Type	Article