Record Details

Nitrogen-limited mangrove ecosystems conserve N through dissimilatory nitrate reduction to ammonium

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Nitrogen-limited mangrove ecosystems conserve N through dissimilatory nitrate reduction to ammonium
 
Creator Fernandes, S.O.
Bonin, P.C.
Michotey, V.D.
Garcia, N.
LokaBharathi, P.A.
 
Subject Aquatic Ecology, Productivity
mangrove swamps
nitrates
reduction
bacteria
ISW, India, Goa, Mandovi estuary
 
Description Earlier observations in mangrove sediments of Goa, India have shown denitrification to be a major pathway for N loss However, percentage of total nitrate transformed through complete denitrification accounted for less than 0�72% of the pore water nitrate reduced Here, we show that up to 99% of nitrate removal in mangrove sediments is routed through dissimilatory nitrate reduction to ammonium (DNRA) The DNRA process was 2x higher at the relatively pristine site Tuvem compared to the anthropogenically-influenced Divar mangrove ecosystem In systems receiving low extraneous nutrient inputs, this mechanism effectively conserves and re-circulates N minimizing nutrient loss that would otherwise occur through denitrification In a global context, the occurrence of DNRA in mangroves has important implications for maintaining N levels and sustaining ecosystem productivity T his study also highlights the significance of DNRA in buffering the climate by modulating the production of the greenhouse gas nitrous oxide.
 
Date 2012-05-24T10:21:24Z
2017-09-30T03:08:01Z
2012-05-24T10:21:24Z
2017-09-30T03:08:01Z
2012
 
Type Journal Article
 
Identifier Scientific Reports, vol.2(419); 2012; 5pp.
2045-2322
http://drs.nio.org/drs/handle/2264/7603
 
Language en
 
Relation Sci Rep-UK
NON-SCI
 
Publisher Nature Publishing Group