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1. Denitrification activity in mangrove sediments varies with associated vegetation

Author:
Patricia C. Bonin,   et al.   ; Sheryl Oliveira Fernandes; Pinky Dutta; Maria-Judith Gonsalves; P.A. LokaBharathi;     Show all 5 Authors
Source:
Ecological engineering 2016 v.95 pp. 671-681
ISSN:
0925-8574
Subject:
Acanthus ilicifolius; Avicennia marina; Rhizophora mucronata; ammonium compounds; carbon; denitrification; ecosystems; environmental factors; littoral zone; nutrients; organic matter; plant litter; salinity; sediments; temperature; vegetation types; India
Abstract:
... To test the hypothesis that mangrove vegetation associated sediment characteristics could influence an ecologically important function such as denitrification, a study was carried out at the Divar mangrove ecosystem in Goa, India. The composition of intertidal mangroves was assessed based on which the down-core (0–10cm) variation in environmental variables and denitrification activity (DNT) associ ...
DOI:
10.1016/j.ecoleng.2016.06.102

2. Denitrification prevails over anammox in tropical mangrove sediments (Goa, India)

Author:
Patricia C. Bonin,   et al.   ; Sheryl Oliveira Fernandes; Valérie D. Michotey; Sophie Guasco; P.A. Loka Bharathi;     Show all 5 Authors
Source:
Marine environmental research 2012 v.74 no. pp. 9-19
ISSN:
0141-1136
Subject:
Proteobacteria; denitrification; genes; habitats; microorganisms; sediments; India
Abstract:
... Denitrification, anammox (Anx) and di-nitrogen fixation were examined in two mangrove ecosystems- the anthropogenically influenced Divar and the relatively pristine Tuvem. Stratified sampling at 2 cm increments from 0 to 10 cm depth revealed denitrification as the main process of N₂ production in mangrove sediments. At Divar, denitrification was ∼3 times higher than at Tuvem with maximum activity ...
DOI:
10.1016/j.marenvres.2011.11.008
PubMed:
22197479

3. Denitrification: An Important Pathway for Nitrous Oxide Production in Tropical Mangrove Sediments (Goa, India)

Author:
Patricia C. Bonin,   et al.   ; Sheryl Oliveira Fernandes; P.A. Loka Bharathi; Valérie D. Michotey;     Show all 4 Authors
Source:
Journal of environmental quality 2010 v.39 no.4 pp. 1507-1516
ISSN:
1537-2537
Subject:
sediments; geographical variation; mangrove forests; nitrification; soil depth; biochemical pathways; nitrites; soil microorganisms; denitrifying bacteria; eutrophication; gas emissions; denitrification; microbial activity; mangrove swamps; nitrous oxide; India
Abstract:
... Net nitrous oxide production and denitrification activity were measured in two mangrove ecosystems of Goa, India. The relatively pristine site Tuvem was compared to Divar, which is prone to high nutrient input. Stratified sampling at 2-cm intervals within the 0- to 10-cm depth range showed that N₂O production at both the locations decreased with depth. Elevated denitrification activity at Divar re ...
DOI:
10.2134/jeq2009.0477
PubMed:
20830937