Published Data Library (PDL)

D325 nitrogen fixation from bioassay experiments

Title

Nitrogen fixation from bioassay experiments by stable-isotope mass spectrometry on UKSOLAS cruise D325.

Author(s) Rees A. (1); Al-Moosawi L. (1)

(1) Plymouth Marine Laboratory

Subject biota, oceans
Abstract

A series of bioassay type experiments were determined to investigate the impact of iron, zinc, cobalt, copper and nitrogen on rates of Nitrogen fixation. Experiments were performed from near surface waters using 15N methodology at 6 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. The experiment was largely inconclusive, though at stations A there was evidence of limitation by Zn, Co and Cu. Interestingly Cu seemed to play a limiting role at other stations whilst nitrogen additions largely decreased rates below natural levels.

Temporal coverage 17 November 2007 - 13 December 2007
Spatial coverage Northeast Atlantic Ocean (40W)
File format Delimited
Language English
Discovery metadata record Link to the related European Directory of Marine Environmental Data (EDMED) record
Publisher British Oceanographic Data Centre - Natural Environment Research Council, UK
Publication date 17 January 2012
Digital Object Identifier (DOI) doi:10.5285/b4d08055-8c3f-45b2-a7c6-15f8382261b3
Short DOI doi:10/mpt
Citation text Rees A.; Al-Moosawi L. (2012). Nitrogen fixation from bioassay experiments by stable-isotope mass spectrometry on UKSOLAS cruise D325. British Oceanographic Data Centre - Natural Environment Research Council, UK. doi:10/mpt.

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