FN Archimer Export Format
PT J
TI Concentrations and fractionation of carbon, iron, sulfur, nitrogen and phosphorus in mangrove sediments along an intertidal gradient (semi-arid climate, New Caledonia)
BT 
AF DEBORDE, Jonathan
   MARCHAND, Cyril
   MOLNAR, Nathalie
   DELLA PATRONA, Luc
   MEZIANE, Tarik
AS 1:1;2:1;3:1,2;4:3;5:2;
FF 1:;2:;3:;4:PDG-RBE-LEADNC;5:;
C1 UMR 7590 IMPMC, UR 206, IRD, F-98848 New Caledonia, France.
   UMR BOREA 7208 CNRS MNHN UPMC IRD UCBN, Museum Natl Hist Nat, F-75231 Paris 05, France.
   Ctr IRD, Ifremer, Dept Lagons Ecosyst & Aquaculture Durable LEAD NC, Noumea, New Caledonia.
C2 IRD, FRANCE
   MNHN, FRANCE
   IFREMER, FRANCE
SI NOUMEA
SE PDG-RBE-LEADNC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
IF 2.744
TC 36
UR https://archimer.ifremer.fr/doc/00251/36252/34802.pdf
LA English
DT Article
DE ;mangrove;zonation;biogeochemistry;New Caledonia
AB In mangrove ecosystems, strong reciprocal interactions exist between plant and substrate. Under semi-arid climate, Rhizophora spp. are usually predominant, colonizing the seashore, and Avicennia marina develops at the edge of salt-flats, which is the highest zone in the intertidal range. Along this zonation, distribution and speciation of C, Fe, S, N, and P in sediments and pore-waters were investigated. From the land-side to the sea-side of the mangrove, sediments were characterized by I/ increase in: (i) water content; (ii) TOC; (iii) mangrove-derived OM; II/ and decrease in: (i) salinity; (ii) redox; (iii) pH; (iv) solid Fe and solid P. Beneath Avicennia and Rhizophora, TS accumulated at depth, probably as a result of reduction of iron oxides and sulfate. The loss of total Fe observed towards the sea-side may be related to sulfur oxidation and to more intense tidal flushing of dissolved components. Except the organic forms, dissolved N and P concentrations were very low beneath Avicennia and Rhizophora stands, probably as a result of their uptake by the root systems. However, in the unvegetated salt-flat, NH4+ can accumulate in organic rich and anoxic layers. This study shows: (i) the evolution of mangrove sediment biogeochemistry along the intertidal zone as a result of the different duration of tidal inundation and organic enrichment; and (ii) the strong links between the distribution and speciation of the different elements.
PY 2015
PD MAR
SO Journal Of Marine Science And Engineering
SN 2077-1312
PU Mdpi
VL 3
IS 1
UT 000435663200003
BP 52
EP 72
DI 10.3390/jmse3010052
ID 36252
ER

EF