There’s also life without oxygen…

Kulturgefäße mit sauerstofffreiem Medium. Bislang unbekannte Bakterien, die ohne Sauerstoff leben können, sollen sich unter sauerstofffreien Bedingungen vermehren, damit wir sie später genau untersuchen können.
Culture vessels with oxygen-free media. So far unknown bacteria that can live without oxygen are supposed to grow under oxygen-free conditions for later studies.

The microorganisms in the ocean enjoy the sun and warmth of the equator, just as we scientists do when we are not working. Here in the equatorial upwelling zone, microorganisms grow well because of the extra nutrients that are brought to the ocean’s surface by upwelling (upwards movement) of water from the deep ocean. As a consequence, in certain depths of the water column, oxygen is consumed faster than it is supplied via circulation

Continue reading

Equator station: between North and South, yesterday and today

Wo sind wir eigentlich? Bild vom Bordcomputer, das in allen Laboren live verfolgt werden kann. Der rote Punkt markiert die aktuelle Position von SONNE. Foto von Rohan Henkel (AG Sensorsysteme ICBM, Wilhemshaven; hier an Bord gehört er zum “Bio-optics” Team).
Where are we? Screenshot of the bord computer display that can be followed in all laboratories. The red dot marks the current position of Sonne. Photo by Rohan Henkel (Marine Sensor Systems ICBM, Wilhemshaven; on board member of the “bio-optics” team).

We have finally reached the equator – the boundary between the northern and southern hemispheres at 0 N and 0 South. But we aren’t just anywhere on the equator: we are exactly at the point at which one step in the right direction can turn today into yesterday, and visa versa. Our station is exactly on the international date line between 180 W and 180 E.

Continue reading