@misc{zonneveld2009popo, author={Karin A F {Zonneveld}}, title={{Physical oceanographic profiles of 25 CTD casts during METEOR cruise M74/3 in 2007}}, year={2009}, doi={10.1594/PANGAEA.728190}, url={https://doi.org/10.1594/PANGAEA.728190}, abstract={Detailed information about the temperature, conductivity and oxygen of the water column have been carried out with a CTD {\textendash} Rosette combination (Seabird 911+) with additional oxygen sensor. Chlorophyll-a measurements and turbidity measurements have been carried our with a Wetlab CHL sensor and Dr. Haard turbidity sensor. The Rosette contains 18 bottles with a volume of 10 l.\\ To investigate the distribution of T .heimii cells and acantharien in the upper water column, water samples have been collected on a depth transect over the deep chlorophyll maximum. Directly after recovery, samples have been gently filtered through a 20$\mu$m and 10$\mu$m sieve and counted, to avoid dissolution of the acantharian. Counts have been carried out using an Axiovert microscope (Zeiss) under 400x magnification.}, type={data set}, publisher={PANGAEA} }