FN Archimer Export Format
PT J
TI Denitrification by benthic foraminifera and their contribution to N-loss from a fjord environment
BT 
AF Choquel, Constance
   Geslin, Emmanuelle
   Metzger, Edouard
   Filipsson, Helena l.
   Risgaard-Petersen, Nils
   Launeau, Patrick
   Giraud, Manuel
   JAUFFRAIS, Thierry
   Jesus, Bruno
   Mouret, Aurélia
AS 1:1;2:1;3:1;4:2;5:3;6:1;7:1;8:1,4;9:5,6;10:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:PDG-RBE-LEADNC;9:;10:;
C1 UMR 6112 LPG BIAF, Univ. Angers, Univ. Nantes, CNRS, France
   Department of Geology, Lund University, Sweden
   Department of Geosciences, Aarhus University, Denmark
   Ifremer, IRD, Univ. Nouvelle‐Calédonie, Univ. La Réunion, CNRS, UMR 9220 ENTROPIE, New Caledonia
   Université de Nantes, Mer Molécules Santé, EA 2160, France
   BioISI – Biosystems & Integrative Sciences Institute, Campo Grande, University of Lisbon, Faculty of Sciences, Portugal
C2 UNIV ANGERS, FRANCE
   UNIV LUND, SWEDEN
   UNIV AARHUS, DENMARK
   IFREMER, FRANCE
   UNIV NANTES, FRANCE
   UNIV LISBON, PORTUGAL
SI NOUMEA
SE PDG-RBE-LEADNC
UM ENTROPIE
IN WOS Ifremer UMR
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 5.092
TC 18
UR https://archimer.ifremer.fr/doc/00643/75482/76327.pdf
   https://archimer.ifremer.fr/doc/00643/75482/76328.pdf
   https://archimer.ifremer.fr/doc/00643/75482/80931.pdf
   https://archimer.ifremer.fr/doc/00643/75482/80932.pdf
LA English
DT Article
AB Oxygen availability impacts the marine nitrogen cycle at a range of spatial and temporal scales. Invasive organisms have shown to sustainably affect sediment geochemistry and benthic ecology. Nonionella sp. T1 was recently described as an invasive benthic foraminifer in the North Sea region. Here, we demonstrate the impact of this denitrifying species on the foraminifera fauna and the nitrogen cycle of the Gullmar Fjord (Sweden). The foraminifera contribution to benthic denitrification was estimated by coupling living foraminifera micro-distribution, denitrification rate measurement and sedimentary nitrate 2D distribution. Nonionella sp. T1 dominated the foraminifera fauna and could denitrify up to 50–100 % of nitrate porewater in oxygenated bottom waters of the fjord. Contrastingly, at the deepest hypoxic low-nitrate station, denitrifying foraminifera species were scarce and did not contribute to nitrogen removal (~ 5 %). Our study showed that benthic foraminifera can be a major contributor of nitrogen mitigation in oxic coastal ecosystems and should be included in ecological and diagenetic models aiming at understanding biogeochemical cycles coupled to nitrogen. 
PY 2021
PD JAN
SO Biogeosciences
SN 1726-4170
PU Copernicus GmbH
VL 18
IS 1
UT 000611360700002
BP 327
EP 341
DI 10.5194/bg-18-327-2021
ID 75482
ER

EF