Phytoplankton Data Fields
    • 05 Aug 2022
    • 1 Minute to read

    Phytoplankton Data Fields


    Article summary

    Data Input

    I n order to input the required information for this pollutant into the Water Quality model, the user needs to make sure that the Tab Phytoplankton appears in the WQ General Tab (please follow the description on the page Preparing a Water Quality Datafile for this). Then the user needs to select the Tab Phytoplankton and type in the necessary information for this pollutant in the fields which are shown on this Tab. Alternatively the necessary information for this pollutant can be typed in the .con file opened in a Textpad editor in the datafile format mentioned below.

    Datafile Format

    Line 1       PHYTOPLANKTON

    Line 2 knutrient, kPH, kS, rphtn, rphtp, rphts

    Line 3       gr1p, cinc1p, gr2p, cinc2p, tcrit

    Line 4       slmxph, extpht, rpht20, q10pht, dethph

    Line 5       dcdcay, alphdc, vdcset

    Where:

    PHYTOPLANKTON = keyword

    knutrient= half saturation constant for nitrate uptake (mg/l)

    kPH= half saturation constant for phosphate uptake (mg/l)

    kS= half saturation constant for silicate uptake (mg/l)

    rphtn =       nitrogen to carbon ratio

    rphtp =       phosphorus to carbon ratio

    rphts =       silicon to carbon ratio

    gr1p = maximum productivity (loge(Pmax) = mT+c) parameters: gradient below TCRIT

    cinc1p = maximum productivity (loge(Pmax) = mT+c) parameters:intercept below TCRIT

    gr2p = maximum productivity (loge(Pmax) = mT+c) parameters: gradient above TCRIT

    cinc2p = maximum productivity (loge(Pmax) = mT+c) parameters: intercept above TCRIT

    tcrit = maximum productivity (loge(Pmax) = mT+c) parameters: TCRIT(oC)

    slmxph = Solar radiation for maximum productivity (kJ/cm2/hour)

    extpht =        light extinction factor due to phytoplankton

    rpht20 = respiration rate at 20C (day-1)

    q10pht =       Q 10 value for respiration of phytoplankton

    dethph = mortality rate constant for phytoplankton (day-1)

    dcdcay = Detrital carbon parameters: decay constant at 20C (day-1)

    alphdc =       factor for temperature dependence

    vdcset =       settling velocity for detrital carbon (mm/s)


    Overview

    Phytoplankton


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