Pelagic food webs drive a flux of> 10 x 1012 kg C yr− 1 that exits surface waters, mostly via
sinking particles through the ocean's" biological pump." Much of this particle flux is …

The oceans' biological pump (BP) exports large amounts of particulate organic carbon
(POC) to the mesopelagic zone (base of the euphotic zone–1000 m depth). The efficiency at …

A pelagic food web model was formulated with the goal of develo** a quantitative
understanding of the relationship between total production, export production, and …

Particulate organic carbon (POC) is vertically transported to the oceanic interior by
aggregates and their ballasts, mainly CaCO3 and biogenic opal, with a smaller role for …

We present new empirical and mechanistic models for predicting the export of organic
carbon out of the surface ocean by sinking particles. To calibrate these models, we have …

Phytoplankton have played key roles in sha** Earth's biogeochemistry and contemporary
human economy, yet because the human experience is so closely tied to higher plants as …

Abstract Knowledge of concentrations and elemental ratios of suspended particles are
important for understanding many biogeochemical processes in the ocean. These include …

Thorium-234 is increasingly used as a tracer of ocean particle flux, primarily as a means to
estimate particulate organic carbon export from the surface ocean. This requires …

Carbon transport within sinking biogenic matter in the ocean contributes to the uptake of
CO2 from the atmosphere. Here we assess the extent to which particulate organic carbon …

One of the main objectives of the Joint Global Ocean Flux Studies (JGOFS) program is to
develop an understanding of the factors controlling organic carbon production in the ocean …