FN Archimer Export Format
PT J
TI Relationship between bacterial compartment and particulate organic matter (POM) in coastal systems: An assessment using fatty acids and stable isotopes
BT 
AF LIENART, Camilla
   SAVOYE, Nicolas
   CONAN, Pascal
   DAVID, Valerie
   BARBIER, Pierrick
   BICHON, Sabrina
   CHARLIER, Karine
   COSTES, Laurence
   DERRIENNIC, Herve
   FERREIRA, Sophie
   GUEUX, Aurore
   HUBAS, Cedric
   MARIA, Eric
   MEZIANE, Tarik
AS 1:1;2:1;3:2;4:1;5:3;6:1;7:1;8:1;9:1;10:4;11:5;12:3,6;13:5;14:3;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;
C1 UMR 5805 EPOC, Université de Bordeaux/CNRS, Pessac, Arcachon, France
   UMR 7621 LOMIC, Sorbonne Universités-UPMC/CNRS, Banyuls, Mer, France
   UMR 7208 BOREA, MNHN, Sorbonne Université/Université de Caen-Normandie/Université des Antilles/CNRS/IRD-207, Paris, France
   UMS 2567 POREA, OASU/Université de Bordeaux/CNRS, Pessac, France
   UMS 2348 OOB, Sorbonne Universités-UMPC/CNRS, Banyuls, Mer, France
   UMR 7208 BOREA, MNHN, Sorbonne Université/Université de Caen-Normandie/Université des Antilles/CNRS/IRD-207, Station Marine de Concarneau, France
C2 UNIV BORDEAUX, FRANCE
   UNIV PARIS 06, FRANCE
   MNHN, FRANCE
   UNIV BORDEAUX, FRANCE
   UNIV PARIS 06, FRANCE
   MNHN, FRANCE
IF 2.929
TC 3
UR https://archimer.ifremer.fr/doc/00860/97211/106118.pdf
LA English
DT Article
CR SOGIR
   SOGIR 18
BO Côtes De La Manche
DE ;POM dynamic;Bacteria;delta C-13;delta N-15;Fatty acids;Mixing models;French littoral
AB Particulate organic matter (POM) in coastal systems is a mixture of different organic matter (OM) sources originating from land and sea. Among sources, bacterial biomass plays a large role in OM processing and carbon recycling in the ocean and is often neglected as a source in common approaches. The present study proposes to use elemental and isotopic ratio of carbon and nitrogen (C:N, delta C-13, delta N-15) and fatty acids to investigate the relationship between bacteria and surface water POM composition of three systems with different characteristics (two marine and one estuarine) over an annual cycle. Overall, our results highlight a positive relationship between bacterial contribution and continental degraded or undergoing degradation POM for all the studied systems and an inverse relationship with pelagic primary producers. At multisystem scale, high bacterial contribution is linked to high proportion of refractory terrestrial material characterizing estuarine stations whereas in marine systems, the occurrence of bacteria is mainly linked to river POM. Over the annual cycle, bacterial markers are more abundant during the winter period characterized by larger river and/or benthic POM contribution. This seasonal pattern is mainly driven by changes in river flows and resuspension. This study highlights the importance of bacterial compartment as a component of coastal and estuarine POM. Even though these results remains semi-quantitative, similar studies in other types of systems can help to understand microbial role in OM dynamic and to better estimate bacterial source in carbon budgets and food web studies. 
PY 2020
PD JUN
SO Estuarine Coastal And Shelf Science
SN 0272-7714
PU Academic Press Ltd- Elsevier Science Ltd
VL 239
UT 000531077000012
DI 10.1016/j.ecss.2020.106720
ID 97211
ER

EF