FN Archimer Export Format
PT J
TI Accumulation of detached kelp biomass in a subtidal temperate coastal ecosystem induces succession of epiphytic and sediment bacterial communities.
BT 
AF Brunet, Maéva
   de Bettignies, Florian
   Le Duff, Nolwen
   Tanguy, Gwenn
   Davoult, Dominique
   Leblanc, Catherine
   Gobet, Angelique
   Thomas, François
AS 1:1;2:2;3:1;4:3;5:2;6:1;7:1,4;8:1;
FF 1:;2:;3:;4:;5:;6:;7:PDG-RBE-MARBEC-LAAAS;8:;
C1 Sorbonne Université, CNRS, Integrative Biology of Marine Models (LBI2M), Station Biologique de Roscoff (SBR), 29680 Roscoff, France
   Sorbonne Université, CNRS, UMR 7144 AD2M, Station Biologique de Roscoff (SBR), 29680 Roscoff ,France
   Sorbonne Université, CNRS, FR2424, Genomer, Station Biologique de Roscoff, 29680 Roscoff, France
   MARBEC, Univ Montpellier, CNRS, Ifremer, IRD Sète, France
C2 UNIV SORBONNE, FRANCE
   UNIV SORBONNE, FRANCE
   UNIV SORBONNE, FRANCE
   IFREMER, FRANCE
SI PALAVAS
SE PDG-RBE-MARBEC-LAAAS
UM MARBEC
IN WOS Ifremer UMR
   copubli-france
   copubli-univ-france
IF 5.476
TC 20
UR https://archimer.ifremer.fr/doc/00666/77808/79983.pdf
   https://archimer.ifremer.fr/doc/00666/77808/79984.zip
LA English
DT Article
AB Kelps are dominant primary producers in temperate coastal ecosystems. Large amounts of kelp biomass can be exported to the seafloor during the algal growth cycle or following storms, creating new ecological niches for the associated microbiota. Here, we investigated the bacterial community associated with the kelp Laminaria hyperborea during its accumulation and degradation on the seafloor. Kelp tissue, seawater and sediment were sampled during a six‐month in situ experiment simulating kelp detritus accumulation. Evaluation of the epiphytic bacterial community abundance, structure, taxonomic composition and predicted functional profiles evidenced a biphasic succession. Initially dominant genera (Hellea, Litorimonas, Granulosicoccus) showed a rapid and drastic decrease in sequence abundance, probably outcompeted by algal polysaccharide‐degraders such as Bacteroidia members which responded within 4 weeks. Acidimicrobiia, especially members of the Sva0996 marine group, colonized the degrading kelp biomass after 11 weeks. These secondary colonizers could act as opportunistic scavenger bacteria assimilating substrates exposed by early degraders. In parallel, kelp accumulation modified bacterial communities in the underlying sediment, notably favoring anaerobic taxa potentially involved in the sulfur and nitrogen cycles. Overall, this study provides insights into the bacterial degradation of algal biomass in situ, an important link in coastal trophic chains. 
PY 2021
PD MAR
SO Environmental Microbiology
SN 1462-2912
PU Wiley
VL 23
IS 3
UT 000612495800001
BP 1638
EP 1655
DI 10.1111/1462-2920.15389
ID 77808
ER

EF