Characterization of the diazotroph communities in the Subtropical North Atlantic (M60/5)

• Applicant: Professorin Julie La Roche, Ph.D.
• Subject Area: Oceanography
• Term: from 2005 to 2007
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 13922303

• Final Report Year: 2014

Final Report Abstract

The research conducted during this project has led to several comprehensive publications that report on nutrient limitation in the tropical North Atlantic ocean. The work developed and applied nutrient bioassay experiments and an apporach that was later adopted by several european and north american researchers. This is examplified in a work of Moore et al. (in Nature Geoscience, 2013) where many of the experiments and data originate from the Meteor cruises on which my group conducted nutrient bioassay experiments.

Publications

• 2006. Iron limits primary productivity during spring bloom development in the central North Atlantic. Global Change Biology. 626–634. Falculty of 1000
  Moore, CM, Mills MM, Milne A, Langlois R, Achterberg EP, Lochte K, LaRoche J, Geider R
  
• 2008. NifH abundances in the Northern Atlantic Ocean. Applied Environmental Microbiology 74: 1922-1931. Falculty of 1000
  Langlois R, Hümmer D, LaRoche J
  
• 2008. Nitrogen and phosphorus co-limitation of bacterial productivity and growth in the Oligotrophic Sub-Tropical North Atlantic Limnol. and Oceanogr. 53: 824-834
  Mills MM, Moore CM, Langlois R, Milne A, Achterberg E, Nachtigall K, Lochte K, Geider R J, LaRoche J
  
• 2008. Relative influence of nitrogen and phosphorous availability on phytoplankton physiology and productivity in the Oligotrophic Sub-Tropical North Atlantic Ocean. Limnol. Oceanogr. 53:291-305
  Moore CM, Mills MM, Langlois R, Milne A, Achterberg EP, LaRoche J, Geider RJ.
  
• (2009) Environmental factors affecting the diversity, distribution and abundance of natural populations of marine diazotrophs
  Rebecca Langlois
  
• (2011) N-Limitation of the Phytoplankton Community in the Mediterranean Sea. In: ASLO Aquatic Sciences Meeting, 13.-18.02.2011, San Juan, Puerto Rico, USA
  Langlois, Rebecca, Mohr, Wiebke, Sudhaus, Stefanie, Bluhm, Katrin, Heller, Maija, Mosseri, Julie, Croot, Peter, Moore, CM and LaRoche, Julie
  
• (2012) Database of diazotrophs in global ocean: abundances, biomass and nitrogen fixation rates. Earth System Science Data Discussions 5(1): 47-106
  Luo YW et al.
  
• (2012) Diazotrophic bacteria respond to Saharan dust additions. Marine Ecology Progress Series 470: 1-14
  Langlois R et al.