Quantification of Photosynthetic Pigments of Plants, Water and Sediment Samples in Chirackal and Kattiparambu of Ernakulam District, Kerala | Chapter 02 | New Perspectives in International Plant and Soil Research Vol. 1
Aims:
The present study intended to investigate the pigment composition of four
selected mangrove plants viz., Avicennia officinalis, Excoecaria agallocha,
Rhizophora mucronata and Sonneratia alba and water and sediment samples. And to
quantify the concentration of various pigments found in the above samples.
Place
and Duration of Study: The samples were collected from the
mangrove creeks of Chirackal and Kattiparambu of Ernakulam district, Kerala.
Duration of the study was from 2013 December to 2015 December.
Methodology:
The estimation of the total pigments, chlorophyll a, chlorophyll b and
carotenoid concentration of the biotic samples, water and sediments were done
using standard methods in Spectrophotometer.
Results:
Plants showed high pigment concentration compared to water and sediments. High
chlorophyll ‘a’ (2 mg/g), chlorophyll ‘b’ (0.8 mg/g) and total chlorophyll
(2.74 mg/g) were observed in Excoecaria agallocha of Kattiparambu and
carotenoids (0.72 mg/g) observed in Rhizophora mucronata, Chirackal. In
sediment samples, high chlorophyll ‘a’ (0.85 mg/g), total chlorophylls (1.31
mg/g) and carotenoids (0.725 mg/g) were observed in Chirackal area and
chlorophyll ‘b’ (0.595 mg/g) obtained in Kattiparambu. Chlorophyll ‘b’ (0.6
mg/g) and carotenoids (0.86 mg/g) were reported high in the water samples of
Kattiparambu region and chlorophyll ‘a’ (0.61 mg/g) and total chlorophylls
(0.86 mg/g) in Chirackal. In Pearson’s correlation coefficient studies, the
content of KEA-chlorophyll was found to have a strong positive correlation
among other mangrove species and some sediment samples.
Conclusion:
Seasonal changes and local geological conditions are the major factors for
variations in pigment concentrations in plants, water and sediment samples.
Sediment pigments proved to be good indicators of lake-ecosystem response to
climate change and long-term variability in the photo trophic community. The
pigment content was influenced by environmental parameters. Temporal and
seasonal changes and local geological conditions may be the reasons for
variations in pigment concentrations in plants, water and sediment samples.
Sediment pigments proved to be good indicators of lake-ecosystem response to
climate change and long-term variability in the photo trophic community, which is
needed for predicting possible effects of future climate change. It was also
recognized that the quality of the pigment record is highly dependent on the
preservation regime in the sediment and water. Increase of pigment
concentration accelerate the performance of photosynthesis and carbohydrate
metabolism, which help to maintain the balance of ecosystem and the
rejuvenation of life as a whole. Therefore further study in this context is
recommended.
Author(s) Details
S. Sofia
Department of Botany, St. Teresa’s
College, Ernakulam, Kerala, India.
M. V. Merlee Teresa
Department of Botany, St.
Teresa’s College, Ernakulam, Kerala, India.
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