Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/7158
Title: Ecological and phytochemical studies in the family podostemaceae
Researcher: Girija, K D
Guide(s): Simon, Thara K
Keywords: biological activities
Podostemaceae
ecology
rock analysis
vegetation analysis
phytochemistry
nutritive value
Botany
Upload Date: 28-Feb-2013
University: Mahatma Gandhi University
Completed Date: July, 2007
Abstract: Podostemaceae are aquatic angiosperms typically growing on rocks in cascades, waterfalls and river rapids. The ecological and phytochemical aspects of selected members of Podostemaceae in Kerala have been investigated. The investigation includes field studies as well as experiments in the laboratory. Preliminary surveys were carried out selecting 13 sites from six rivers of Kerala. Morphological variations of 15 species belonging to 10 genera were noted. Habitat and geology of these sites are discussed based on rock analysis. 10 species belonging to six genera have been subjected to detailed vegetation analysis and the parameters such as phenology and association with algae are also discussed. The role of physico-chemical factors such as turbidity, temperature, pH, dissolved oxygen, carbondioxide, total hardness, alkalinity, chloride, nitrate and phosphate and their impact on the growth of Podostemaceae have been traced by analyzing the water samples collected at regular intervals during the year 2004-2005. Selecting one of the study sites, the response of taxa in relation to the variation in ecological conditions is also dealt with in detail. Polypleurum stylosum and Indotristicha ramosissima have been selected to study the phytochemistry, nutritive value and biological activities. The results are found to be relevant. The present work indicates that taxa investigated have both environmental and phytochemical significance. Continuous monitoring of these taxa can certainly provide an index for biodiversity, local endemism and also for the habitat loss of entire ecosystem.
Pagination: 193p.
URI: http://hdl.handle.net/10603/7158
Appears in Departments:Faculty of Science

Files in This Item:
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01_title.pdfAttached File32.94 kBAdobe PDFView/Open
02_certifiate.pdf17.2 kBAdobe PDFView/Open
03_declaration.pdf57.55 kBAdobe PDFView/Open
04_abstract.pdf50.41 kBAdobe PDFView/Open
05_preface.pdf56.57 kBAdobe PDFView/Open
06_acknowledgements.pdf45.19 kBAdobe PDFView/Open
07_contents.pdf38.71 kBAdobe PDFView/Open
08_list of tables.pdf56.33 kBAdobe PDFView/Open
09_list of figures.pdf56.98 kBAdobe PDFView/Open
10_list of plates.pdf50.67 kBAdobe PDFView/Open
11_list of abbreviations.pdf38.74 kBAdobe PDFView/Open
12_section 1.pdf4 MBAdobe PDFView/Open
13_section 2.pdf934.36 kBAdobe PDFView/Open
14_summary.pdf74.87 kBAdobe PDFView/Open
15_references.pdf161.08 kBAdobe PDFView/Open


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