The oceanic uptake of anthropogenic carbon dioxide emissions is changing seawater
chemistry in a process known as ocean acidification. The chemistry of this rapid change in …

Dissolution of anthropogenic CO2 into the oceans results in ocean acidification (OA),
altering marine chemistry with consequences for primary, secondary, and tertiary food web …

Diatoms account for up to 40% of marine primary production, and require silicic acid to grow
and build their opal shell. On the physiological and ecological level, diatoms are thought to …

Ocean acidification, the change in seawater carbonate chemistry due to the uptake of
anthropogenic CO2, affects the physiology of marine organisms in multiple ways. Diverse …

Ocean alkalinity enhancement (OAE) is a nature-based technology for CO2 removal and
storage, but little is known about its environmental safety. We tested a CO2-equilibrated OAE …

Gravitational sinking of photosynthetically fixed particulate organic carbon (POC) constitutes
a key component of the biological carbon pump. The fraction of POC leaving the surface …

Ocean alkalinity enhancement (OAE) is currently discussed as a potential negative emission
technology to sequester atmospheric carbon dioxide in seawater. Yet, its potential risks or …

Reduction of anthropogenic CO2 emissions alone will not sufficiently restrict global warming
and enable the 1.5° C goal of the Paris agreement to be met. To effectively counteract …

Artificial upwelling brings nutrient-rich deep water to the sun-lit surface to boost fisheries or
carbon sequestration. Deep water sources under consideration range widely in inorganic …

Gelatinous zooplankton are increasingly recognized to play a key role in the ocean's
biological carbon pump. Appendicularians, a class of pelagic tunicates, are among the most …