The cycling of biologically produced calcium carbonate (CaCO3) in the ocean is a
fundamental component of the global carbon cycle. Here, we present experimental …

Natural mechanisms in the ocean, both physical and biological, concentrate carbon in the
deep ocean, resulting in lower atmospheric carbon dioxide. The signals of these carbon …

Sinking particulate flux out of the upper ocean is a key observation of the ocean's biological
carbon cycle. Particle flux in the upper mesopelagic is often determined using sediment …

Under physically isolated conditions, net community production (NCP) can be accurately
estimated from the rate of oxygen evasion to the atmosphere derived from local mixed layer …

We present here a global oceanic compilation of 234 Th measurements that collects results
from researchers and laboratories over a period exceeding 50 years. The origin of the 234 …

Spatial variability of 7 Be activity in both particulate and dissolved phases in the Black Sea
was studied using field observations from the 95th cruise of R/V Professor Vodyanitsky in the …

Marine microorganisms play a critical role in regulating atmospheric CO 2 concentration via
the biological carbon pump. Deposition of continental mineral dust on the sea surface …

Biogeochemistry in marine plankton communities is strongly influenced by the activities of
microbial species. Understanding the composition and dynamics of these assemblages is …

Nitrification, the microbial conversion of ammonium to nitrite then to nitrate, occurs
throughout the oceanic water column, yet the environmental factors influencing the …

The balance of marine autotrophy and heterotrophy regulates the ocean's ability to serve as
a CO2 sink, as organic material produced by autotrophs sinks into the ocean interior to drive …