Record Details

Soil biochemical/ microbial indices as ecological indicators of land use change in mangrove forests

DSpice at Indian Institute of Spices Research

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Field Value
 
Creator DINESH, R
GHOSHAL CHAUDHURI, S
 
Date 2014-05-28T06:54:51Z
2014-05-28T06:54:51Z
2013
 
Identifier Ecological Indicators 32 (2013) 253– 258
1470-160X
http://hdl.handle.net/123456789/1108
 
Description The objective of the study was to examine the long-term changes in biochemical/microbial indicators of
soil quality due to clear felling of mangroves for establishment of plantations. The biochemical/microbial parameters included dissolved organic-C (DOC) and -N (DON), soil microbial biomass-C (SMBC), -N
(SMBN) and -P (SMBP), soil respiration (SR), metabolic quotient (qCO2), adenylates (ATP, AMP and ADP), adenylate energy charge (AEC), ergosterol and their ratios. Results revealed that the undisturbed mangroves
possessed considerably greater amounts of soil organic C, DOC and DON. Consequently, SMBC, SMBN and SMBP showed marked reductions in the plantations suggesting an average loss of 66%, 49% and 75%, respectively due to changed land use. Likewise, SR decreased by 46.4% in the plantations. Enhanced
qCO2 levels in the plantations indicated a microbial community under stress with a high maintenance carbon demand, while lower qCO2 levels in the mangroves indicated an efficient microbial community and a better use of available organic substrates. The levels of ATP, AMP and ADP followed a trend identical to that of SMB and SR. Greater ergosterol concentration led to greater ergosterol/SMBC ratio suggesting a shift in the microbial community structure from a primarily fungi dominated SMB in the mangroves to a fungi recessive SMB in the plantations.
 
Format 575186 bytes
application/pdf
 
Language en
 
Publisher Elsevier
 
Subject ATP
Deforestation
Ergosterol
Metabolic quotient
Soil microbial biomass
Soil respiration
 
Title Soil biochemical/ microbial indices as ecological indicators of land use change in mangrove forests
 
Type Article