Particulate organic matter flux and planktonic new production in the deep ocean

  title={Particulate organic matter flux and planktonic new production in the deep ocean},
  author={Richard W. Eppley and Bruce J. Peterson},
Primary production in the oceans results from allochthonous nutrient inputs to the euphotic zone (new production) and from nutrient recycling in the surface waters (regenerated production). Global new production is of the order of 3.4−4.7 × 109 tons of carbon per year and approximates the sinking flux of paniculate organic matter to the deep ocean. 

Production and Fate of Bacteria in the Oceans

Recent research suggests that aerobic, heterotrophic bacteria in the marine euphotic zone are not merely decomposers of detritus. The bacterial biomass in the coastal and open oceans is large and

Microbial production of recalcitrant dissolved organic matter: long-term carbon storage in the global ocean

The microbial carbon pump is proposed as a conceptual framework to address the important, multifaceted biogeochemical problem of fixed carbon in the upper ocean.

Nutrients, organic carbon and the carbon cycle in sea water

The manner in which the carbon cycle operates in the ocean is of prime importance to marine geochemistry because the down-column transport of particulate organic carbon, i.e. the global carbon flux,

Formation and Composition of Marine Particulates

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High winter respiration has been observed in a subarctic estuary with high levels of organic matter inputs, while winter is generally thought to be a non-productive season. We constructed an oxygen

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Detrital Organic Fluxes Through Pelagic Ecosystems

Menzel (1974) wrote ‘particularly lacking is information on the rates of input, utilisation and decomposition of organic matter to and in the deep sea, and the extent to which these processes

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An attempt to quantify the cycling of N in the oceans suggests that losses of combined N greatly exceed gains, a discrepancy that points to the inadequacy of our knowledge of the processes involved.



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The use of 15N-labeled compounds to obtain specific uptake rates for the various nitrogen sources available to the phytoplankton makes it possible to separate the fractions of primary productivity

The Uptake of Urea by Natural Populations of Marine PHYTOPLANKTON1

Nitrogen-15 isotopes were used to study the uptake of nitrate, ammonium, and urea by natural phytoplankton populations in 36 samples collected at nine stations off the coast of southern California.

Estimates of vertical eddy diffusion through the thermocline from phytoplankton nitrate uptake rates in the mixed layer of the eastern tropical Pacific1

Vertical eddy diffusion coefficients ranging from 0.05-1.1 cm2*s-l were calculated from phytoplankton nitrate uptake rates in the mixed layer and nitrate gradients at the top of the thermocline of

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The accelerated sinking rates of copepod fecal pellets may provide a mechanism for nutritional enrichment of the deep-sea ecosystem with organic parcels containing incompletely-assimilated plant material.