The Oder Estuary - IOW

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2.1.1 Differential equations
Nitrogen
Water column
d(PHYTOPLANKTONN) /dt = uptake phytoplN – mortality phytopl N – sedimentation phytopl N – outflow phytopl N
d(DIN) /dt = mineralization Ndet + (mineralization Nsed – denitrification) + inflow DIN from the drainage and Pomeranian Bight + inflow DIN from point
sources – uptake phytoplN – outflow DIN
d(Ndet) / dt = mortality phytopl N + inflow Ndet from the drainage and Pomeranian Bight – mineralization Ndet – sedimentation Ndet – outflow Ndet
Sediment
d(Nsed ) / dt = sedimentation Ndet + sedimentation phytoplN – mineralization Nsed – burial Nsed
Phosphorus
Water column
d(PO4) /dt = mineralization Pdet + mineralization Psed +inflow PO4 from the drainage and Pomeranian Bight + inflow PO4 from point sources
– 1/16* uptake phytoplN – outflow PO4
d(Pdet ) / dt = 1/16 * mortality phytoplN + inflow Pdet from the drainage and Pomeranian Bight– mineralization Pdet – sedimentation Pdet – outflow Pdet
Sediment
d(Psed ) / dt = sedimentation Pdet + 1/16* sedimentation phytoplN – mineralization Psed – burial Psed