Studies on the seasonal changes of phosphorus in the marine environments off Cochin
Studies on the seasonal changes of phosphorus in the marine environments off Cochin
Date
2006
Authors
Ashraf, P.M.
Edwin, L.
Meenakumari, B.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Studies were conducted to evaluate the changes of phosphorus in marine water and sediments of seven stations in the coastal areas off Cochin. Samples were collected on a monthly basis from January 2001 to December 2001. Results revealed higher levels of P in marine water samples collected during October–December 2001. The marine water P ranged from 0 to 0.38 ppm throughout the year. Speciation of P in marine
sediment revealed that the Al bound P was maximum compared to Fe, Ca and organic bound P. Loosely bound and aluminium bound P was maximum during October–December especially in 10 and 20 m depth stations off Narakkal. Fe bound P was found to be least in June and September and highest during January–April. Low levels of Ca bound P were detected in samples collected during January–March and inorganic
P was maximum in June and September. Organic bound P was maximum in 10 m depth stations and also during June and September. Phosphate fractions varied with locations and exhibited seasonal fluctuations.
Description
Keywords
Phosphate fractions, marine sediments, seasonal variations
Citation
Journal of Environment International 2006: 32(2), 159-164