Microbial activity measured from water bottle samples in a cyclonic eddy during METEOR cruise M156, off Mauritania ...

• Main Authors: Devresse, Quentin, Becker, Kevin W, Engel, Anja
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2022
• Subjects: bacteria growth efficiency; bacterial production; bacterial respiration; cyclonic eddy; Phytoplankton; primary production; Role of Eddies for the Carbon Pump in Coastal upwelling Areas REEBUS; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.950510; https://doi.pangaea.de/10.1594/PANGAEA.950510

Auto- and heterotrophic microbial activity (biomass production and respiration) were investigated in a cyclonic eddy that formed off Mauritania along the ∼ 900 km zonal corridor between Mauritania and the Cabo Verde islands in the eastern Tropical North Atlantic during the M156 cruise on the RV Meteor from July 3rd to August 1st 2019. The dataset includes measured and calculated data over the epipelagic layer (0-200 m depth) of 25 stations with 14 of them inside or in the vicinity of a cyclonic eddy. Temperature, salinity, and oxygen were obtained from a Seabird 911 plus CTD system equipped with two independently working sets of temperature–conductivity–oxygen. Seawater samples were collected using 10 L Niskin bottles attached to the CTD Rosette. Ammonium was analysed based on Solórzano (1969, https://doi.org/10.4319/lo.1969.14.5.0799) and nitrate, nitrite, phosphate and silicate were measured photometrically with continuous-flow analysis on an auto-analyser based on Hansen and Koroleff, (1999, ...