Record Details

Phosphorous fractionation in mangrove sediments of Kerala, south west coast of India: the relative importance of inorganic and organic phosphorous fractions

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Phosphorous fractionation in mangrove sediments of Kerala, south west coast of India: the relative importance of inorganic and organic phosphorous fractions
 
Creator Resmi, P.
Manju, M.N.
Gireeshkumar, T.R.
Ratheeshkumar, C.S.
Movitha, M.
Shameem, K.
Chandramohanakumar, N.
 
Subject GEOLOGY AND GEOPHYSICS
CHEMISTRY AND BIOGEOCHEMISTRY
CHEMISTRY AND BIOGEOCHEMISTRY
CHEMISTRY AND BIOGEOCHEMISTRY
 
Description The study of phosphorous dynamics in mangrove ecosystems of the northern Kerala coast aims to delineate its relationships with other biogeochemical parameters. Our intension is to check the validity of the hypothesis that these mangrove ecosystems act as an efficient trap of organic phosphorous by acting as P sink. The dissolved inorganic phosphate displayed higher concentration in monsoon that could be correlated with higher P leaching from mangrove litter as well as terrigenous input during wet season. Fe(OOH)equivalent P was much higher in monsoon (235.23 to 557.70 microg g-1) and lower in pre-monsoon (36.50 to 154.97 microg g-1), and displayed significant contribution towards the inorganic sedimentary P fractions. In monsoon, adsorption of P on iron hydroxides is enhanced by fresh water conditions, but pre-monsoon is characterised by the reductive dissolution of iron oxy hydroxides and the subsequent efflux of P to water column. CaCO3 equivalent Pinorg may be present as an inert fraction in the sediment matrix, and did not display any interrelationship with other geochemical parameters. The abundant total organic P (25 to 73 %) fractions, largely derived from P bound with humic/fulvic acid, played a major role in immobilising P and regulating its dynamics in the nearby estuarine and coastal environment
 
Date 2016-07-11T09:15:27Z
2016-07-11T09:15:27Z
2016
 
Type Journal Article
 
Identifier Environmental Monitoring and Assessment, vol.188; 2016; no.366 doi.:10.1007/s10661-016-5366-4
http://drs.nio.org/drs/handle/2264/4988
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2016] Springer
 
Publisher Springer