Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
Discussion papers
https://doi.org/10.5194/bg-2019-306
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-2019-306
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 22 Aug 2019

Submitted as: research article | 22 Aug 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Biogeosciences (BG).

Spatial and temporal variability in the response of phytoplankton and bacterioplankton to B-vitamin amendments in an upwelling system

Vanessa Joglar, Antero Prieto, Esther Barber-Lluch, Marta Hernández-Ruiz, Emilio Fernández, and Eva Teira Vanessa Joglar et al.
  • Departamento Ecoloxía e Bioloxía Animal, Universidade de Vigo, Campus Lagoas-Marcosende 36310 Vigo, Spain

Abstract. We evaluated the temporal (inter-day and inter-season) and spatial variability in microbial plankton responses to vitamins B12 and B1 supply in coastal and oceanic waters. Inter-day variability in microbial plankton responses to B-vitamins was not of great concern, suggesting that B-vitamins availability was controlled by factors operating at larger temporal scales, such as those driving microbial community seasonal succession. Most positive responses were produced by treatments containing either B12 alone or B12 combined with B1 in oceanic waters, which was consistent with the significantly lower average vitamin B12 ambient concentrations compared to that in the coastal station. Growth stimulation by B1 addition was more frequent on bacteria, which is coherent with their widespread dependence on exogenous sources for this growth factor. Negative responses to B-vitamins were generalized in coastal waters in summer, and were associated to a high contribution of Flavobacteriales to the prokaryote community. This observation suggests that the external supply of B12 and/or B1 may promote negative interactions between microbial components when B-vitamins auxotrophs are abundant. The microbial response patterns to B12 and/or B1 amendments were significantly correlated with changes in the prokaryotic community composition, highlighting the pivotal role of prokaryotes in B-vitamins cycling in marine ecosystems.

Vanessa Joglar et al.
Interactive discussion
Status: open (until 03 Oct 2019)
Status: open (until 03 Oct 2019)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Vanessa Joglar et al.
Vanessa Joglar et al.
Viewed  
Total article views: 189 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
151 37 1 189 8 0 1
  • HTML: 151
  • PDF: 37
  • XML: 1
  • Total: 189
  • Supplement: 8
  • BibTeX: 0
  • EndNote: 1
Views and downloads (calculated since 22 Aug 2019)
Cumulative views and downloads (calculated since 22 Aug 2019)
Viewed (geographical distribution)  
Total article views: 92 (including HTML, PDF, and XML) Thereof 92 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 19 Sep 2019
Publications Copernicus
Download
Short summary
Coastal marine ecosystems are among the most ecologically and economically productive areas providing a large fraction of ecosystem goods and services to human populations and B-vitamins have long been considered as important growth factors for phytoplankton. Our findings indicate that the responses of microbial plankton to B-vitamins supply is mainly driven by the bacterial community composition and microbial plankton in this area seems to be well adapted to cope with B vitamin shortag.
Coastal marine ecosystems are among the most ecologically and economically productive areas...
Citation