FN Archimer Export Format
PT J
TI Diatoms shape the biogeography of heterotrophic prokaryotes in early spring in the Southern Ocean
BT 
AF Liu, Yan
   Debeljak, Pavla
   Rembauville, Mathieu
   Blain, Stéphane
   Obernosterer, Ingrid
AS 1:1;2:1,2;3:1;4:1;5:1;
FF 1:;2:;3:;4:;5:;
C1 Sorbonne Université, CNRSLaboratoire d'Océanographie Microbienne (LOMIC), 66650 Banyuls‐sur‐Mer ,France
   Department of Limnology and Bio‐OceanographyUniversity of Vienna, 1090 Vienna, Austria
C2 UNIV PARIS 06, FRANCE
   UNIV VIENNA, AUSTRIA
IF 4.933
TC 28
UR https://archimer.ifremer.fr/doc/00486/59759/85336.pdf
LA English
DT Article
CR MD 205 / SOCLIM
BO Marion Dufresne
AB The interplay among microorganisms profoundly impacts biogeochemical cycles in the ocean. Culture‐based work has illustrated the diversity of diatom–prokaryote interactions, but the question of whether these associations can affect the spatial distribution of microbial communities is open. Here, we investigated the relationship between assemblages of diatoms and of heterotrophic prokaryotes in surface waters of the Indian sector of the Southern Ocean in early spring. The community composition of diatoms and that of total and active prokaryotes were different among the major ocean zones investigated. We found significant relationships between compositional changes of diatoms and of prokaryotes. In contrast, spatial changes in the prokaryotic community composition were not related to geographic distance and to environmental parameters when the effect of diatoms was accounted for. Diatoms explained 30% of the variance in both the total and the active prokaryotic community composition in early spring in the Southern Ocean. Using co‐occurrence analyses, we identified a large number of highly significant correlations between abundant diatom species and prokaryotic taxa. Our results show that key diatom species of the Southern Ocean are each associated with a distinct prokaryotic community, suggesting that diatom assemblages contribute to shaping the habitat type for heterotrophic prokaryotes. 
PY 2019
PD APR
SO Environmental Microbiology
SN 1462-2912
PU Wiley
VL 21
IS 4
UT 000464373000021
BP 1452
EP 1465
DI 10.1111/1462-2920.14579
ID 59759
ER

EF