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Mort_{i} = M_{i} + DensM_{i} \cdot (\frac {FF_{i}}{CC_{i}}-1)) \cdot FF_{i}
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```
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[top](NPZ model/Biological Processes)# Mineralization
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[top](NPZ model/Biological Processes)
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# Mineralization
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The mineralisation of detritus is described as a first-order function with a first-order rate constant $`r_{Det}`$ The mineralisation rate increases with water temperature.
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```math
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Mineralization = (r_{Det} \cdot Det \cdot T_{fac}
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```
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[top](NPZ model/Biological Processes)# DINupMPB
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[top](NPZ model/Biological Processes)
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# DINupMPB
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DINupMPB is the production of microphytobenthos [mmolN m<sup>-2</sup> d<sup>-1</sup>]. It is assumed that microphytobenthos only occurs at the intertidal areas. DINupMPB is depending on the irradiation, water temperature, the nutrient concentration (DIN) and the microphytobenthos concentration.
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Mean daily irradiation at the water surface [W d<sup>-1</sup>] is derived from the file KNMI measurements (stored in “./DataOS/KNMI/”).
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It is assumed that about 50% of the light is photosynthetic active radiation (PAR)
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