Aquatic Ecodynamics (AED/AED2) model library

Variable Summary & Setup Options

Variable Name	Description	Units	Variable Type	Core/Optional
`MAC_{Group}`	macrophyte group	$mmol C\,m^{-2}$	-	core

Variable Name	Description	Units	Variable Type	Core/Optional
`diag_PAR`	benthic light intensity	$W\,m^{-2}$	-	-
`GPP`	benthic plant productivity	$\,d^{-1}$	-	-
`P2R`	macrophyte p:r ratio	-	-	-
`MAC`	total macrophyte biomass	$mmol C\,m^{-2}$	-	-
`LAI`	macrophyte leaf area density	$m^{2}\,m^{-2}$	-	-
`MAC_ag`	total above ground macrophyte biomass	$mmol C\,m^{-2}$	-	-
`MAC_bg`	total below ground macrophyte biomass	$mmol C\,m^{-2}$	-	-

Parameter Name	Description	Units	Parameter Type	Default	Typical Range	Comment
`num_mphy`	number of macrophyte groups	-	integer		0-5	-
`the_mphy`	list of ID's of groups in aed_phyto_pars.nml (len=num_phyto)	-	integer		1 - 5	-
`n_zones`	total number of active material zones	-	integer	-	-	-
`active_zones`	Active material Zone ID's	-	array	-	-	-
`dbase`	link to mphy database	-	string	-	-	-
`simStaticBiomass`	switch to enable static biomass simulation	-	boolean	.false.	-	-
`simMacFeedback`	switch to enable macrophyte feedback simulation	-	boolean	.false.	-	-
`m_name`	name of macrphyte group	-	string	-	-	-
`m0`	minimum above ground density of macrophyte	$mmol C\,m^{-2}$	float	2e-01	-	-
`R_growth`	maximum growth rate at 20C	$mmol C\,m^{-2}\,day^{-1}$	float	2	-	-
`fT_Method`	specific temperature limitation function of growth	-	integer		0-1	-
`theta_growth`	Arrenhius temperature scaling for growth function	-	float	1e+00	-	-
`T_std`	standard temperature	deg C	float	20	-	-
`T_opt`	optimum temperature	deg C	float	20	-	-
`T_max`	maximum temperature	deg C	float	20	-	-
`lightModel`	type of light response function	-	integer		0-1	-
`I_K`	half saturation constant for light limitation of growth	$microE\,m^{-2}\,s^{-1}$	float	180	-	-
`I_S`	saturation light intensity used if lightModel=1	$microE\,m^{-2}\,s^{-1}$	float	100	-	-
`KeMAC`	specific attenuation coefficient	-	float	4e-03	-	-
`f_pr`	fraction of primary production lost to exudation	-	float	3e-02	-	-
`R_resp`	respiration loss rate at 20C	$mmol C\,m^{-2}\,day^{-1}$	float	2e-02	-	-
`theta_resp`	Arrhenius temperature scaling factor for respiration	-	float	1e+00	-	-
`salTol`	type of salinity limitation function	-	float		-	-
`S_bep`	salinity limitation value at miximum falinity s_maxsp	-	float	1	-	-
`S_maxsp`	maximum salinity	-	float	36	-	-
`S_opt`	optimal salinity	-	float	1	-	-
`K_CD`	constant relating macrophyte density to drag coefficient	$mmol C\,m^{-3}\,day^{-1}$	float		-	-
`f_bg`	fraction of primary production apportioned to below-ground biomass	$mmol C\,m^{-3}\,day^{-1}$	float		-	-
`k_omega`	Omega constant relating plant density to effective area of coverage	$W\,m^{-2}$	float		-	-
`Xcc`	internal C:chla ratio of the plant leaves	-	float	50	-	-
`K_N`	half saturation concentration of nitrogen	-	float	2e+00	-	-
`X_ncon`	constant internal nitrogen concentration	-	float	2e-01	-	-
`K_P`	half saturation concentration of phosphorus	-	float	3e-01	-	-
`X_pcon`	constant internal phosphorus concentration	$kg\,m^{-3}$	float	9e-03	-	-

An example nml block for the macrophyte module is shown below. NOTE: Users must supply a valid "aed2_macrophyte_pars.nml" file.


  &aed2_macrophyte
   num_mphy = 1
   the_mphy = 3
   n_zones  = 4
   active_zones = 2,3,4,5
   simStaticBiomass  = .true.
   simMacFeedback    = .false.
   dbase = '../External/AED2/aed2_macrophyte_pars.nml'
 /

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