Nitrogen fixation from diel surveys by stable-isotope mass spectrometry on UKSOLAS cruise D325.

• Main Authors: Rees, Andrew, Al-Moosawi, Lisa
• Format: Dataset
• Language: English
• Published: British Oceanographic Data Centre, Natural Environment Research Council 2012
• Subjects: biota; oceans; North East Atlantic
• Online Access: https://dx.doi.org/10.5285/cc84753d-7b95-479b-a262-d53085b21d4d; https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/cc84753d-7b95-479b-a262-d53085b21d4d/

Nitrogen fixation was determined from near surface waters using 15 N methodology at 5 different oceanographic stations in the vicinity of the Cape Verde Islands (north-east Atlantic) between 13 November and 18 December 2007 onboard RRS Discovery. Stations were selected from remotely sensed information on surface chlorophyll concentrations to give a gradient of conditions between 0.06 and 0.38 µg L -1 . High rates (>13.8 nmol L -1 h -1 ) were determined at Station A coincident with maximum iron concentration (1.51 nM). At all other stations rates were between 0.03 and 0.54 nmol L -1 h -1 .