Phosphorus oceans

Delaney, M.L. (1998) Phosphorus accumulation in marine sediments and the oceanic phosphorus cycle. Global Biogeochem. Cycles 12, 563-572. 

In contrast, an open ocean phosphorus enrichment experiment (CYCLOPS) conducted in the eastern Mediterranean did find evidence for P limitation of N2 fixation in bulk water (Rees et ah, 2006). 

Rasmussen B. (1996) Early diagenetic REE-phosphate minerals (florencite, gorceixite, crandallite, and xenotime) in marine sandstones a major sink for oceanic phosphorus. Am. J. Sci. 296, 601-632. 

Table 3 Revised oceanic phosphorus input fluxes, removal fluxes, and estimated oceanic residence time.

As noted in Table 2, between 40% and 75% of phosphorus buried in continental margin sediments is potentially reactive, and 90% to 100% of phosphorus buried in abyssal sediments is potentially reactive. The reactive-P fraction of the total sedimentary P-reservoir represents that which may have passed through the dissolved state in oceanic waters, and thus represents a true P-sink from the ocean. The minimum reactive-P burial flux was calculated as the sum of 0.4(sFcs) + 0.9 (sFas) the maximum reactive-P burial flux was calculated as the sum of 0.75(sFcs) + l(sFas). Both the flux estimates and the percent reactive-P estimates have associated with them large uncertainties. Residence time estimates are calculated as the oceanic phosphorus inventory (reservoirs 4 and 5 (Table 1) = 3 X 10 moles P) divided by the minimum and maximum input and removal fluxes. 

Filippelli G. M. and Delaney M. L. (1994) The oceanic phosphorus cycle and continental weathering during the Neogene. Paleoceanography 9(5), 643 -652. 

Rasmussen B. (2000) The impact of early-diagenetic alumi-nophosphate precipitation on the oceanic phosphorus budget. In Marine Authigenesis From Global to Mierobial. Spec. Publ. 66 (eds. C. R. Glenn, L. Prevot-Lucas, and J. Lucas). SEPM, pp. 89-101. 

These ectoenzymes play a significant part in phosphorus cycling in natural waters. In lakes and oceans, phosphorus is partitioned among particulate and dissolved inorganic and organic fractions and is rapidly transformed from one fraction to another. Estimates of the size of the labile dissolved organic phosphorus pool in waters off the coast of Hawaii (0.01-0.2 /rg at P L 1), and its rapid turnover (0.008-0.04 h 1), presumably facilitated by extracellular phosphatases, are comparable with those of PO4- (Smith et al., 1985) and indicate the importance of ectoenzymes in the major nutrient cycles. 

Labeling the dissolved oceanic silicon pool atmospheric circulation Labeling the dissolved oceanic phosphorus pool tropospheric circulation... 

Atmospheric Input of Pollutants. Nitrogen Isotopes in the Ocean. Phosphorus Cycle. 

Residence time estimates are calculated as the oceanic phosphorus inventory (reservoirs 4 and 5 (Table 1) = 3x10 molP) divided by the minimum and maximum input and removal fluxes. 

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