PMID- 21951381
OWN - NLM
STAT- MEDLINE
DCOM- 20120402
LR  - 20181201
IS  - 1462-2920 (Electronic)
IS  - 1462-2912 (Linking)
VI  - 13
IP  - 12
DP  - 2011 Dec
TI  - Invariable biomass-specific primary production of taxonomically discrete 
      picoeukaryote groups across the Atlantic Ocean.
PG  - 3266-74
LID - 10.1111/j.1462-2920.2011.02586.x [doi]
AB  - Oceanic photosynthetic picoeukaryotes (< 3 microm) are responsible for > 40% of total 
      primary production at low latitudes such as the North-Eastern tropical Atlantic. 
      In the world ocean, warmed by climate changes, the expected gradual shift towards 
      smaller primary producers could render the role of photosynthetic picoeukaryotes 
      even more important than they are today. Little is still known, however, about 
      how the taxonomic composition of this highly diverse group affects primary 
      production at the basin scale. Here, we combined flow cytometric cell sorting, 
      NaH(1)(4)CO(3) radiotracer incubations and class-specific fluorescence in situ 
      hybridization (FISH) probes to determine cell- and biomass-specific inorganic 
      carbon fixation rates and taxonomic composition of two major photosynthetic 
      picoeukaryote groups on a  approximately 7500-km-long latitudinal transect across the Atlantic 
      Ocean (Atlantic Meridional Transect, AMT19). We show that even though larger 
      cells have, on average, cell-specific CO(2) uptake rates  approximately 5 times higher than the 
      smaller ones, the average biomass-specific uptake is statistically similar for 
      both groups. On the other hand, even at a high taxonomic level, i.e. class, the 
      contributions to both groups by Prymnesiophyceae, Chrysophyceae and Pelagophyceae 
      are significantly different (P < 0.001 in all cases). We therefore conclude that 
      these group's carbon fixation rates are independent of the taxonomic composition 
      of photosynthetic picoeukaryotes across the Atlantic Ocean. Because the above 
      applies across different oceanic regions the diversity changes seem to be a 
      secondary factor determining primary production.
CI  - (c) 2011 Society for Applied Microbiology and Blackwell Publishing Ltd.
FAU - Grob, Carolina
AU  - Grob C
AD  - School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK.
FAU - Hartmann, Manuela
AU  - Hartmann M
FAU - Zubkov, Mikhail V
AU  - Zubkov MV
FAU - Scanlan, Dave J
AU  - Scanlan DJ
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20110927
PL  - England
TA  - Environ Microbiol
JT  - Environmental microbiology
JID - 100883692
RN  - 142M471B3J (Carbon Dioxide)
SB  - IM
MH  - Atlantic Ocean
MH  - *Biomass
MH  - *Carbon Cycle
MH  - Carbon Dioxide/metabolism
MH  - Flow Cytometry
MH  - Geography
MH  - Haptophyta/classification/*metabolism
MH  - In Situ Hybridization, Fluorescence
MH  - Photosynthesis
MH  - Seawater/*microbiology
MH  - Stramenopiles/classification/*metabolism
EDAT- 2011/09/29 06:00
MHDA- 2012/04/03 06:00
CRDT- 2011/09/29 06:00
PHST- 2011/09/29 06:00 [entrez]
PHST- 2011/09/29 06:00 [pubmed]
PHST- 2012/04/03 06:00 [medline]
AID - 10.1111/j.1462-2920.2011.02586.x [doi]
PST - ppublish
SO  - Environ Microbiol. 2011 Dec;13(12):3266-74. doi: 
      10.1111/j.1462-2920.2011.02586.x. Epub 2011 Sep 27.