sim_rescomp()
R/spec_rescomp.R
spec_rescomp.Rd
Generate list of parameters for a consumer-resource model to be
passed to sim_rescomp()
spec_rescomp(
spnum = 1,
resnum = 1,
mumatrix,
kmatrix,
qmatrix,
effmatrix = NULL,
funcresp = "type1",
essential = FALSE,
chemo = TRUE,
mort = 0.03,
resspeed = 0.03,
resconc = 1,
respulse = 0,
mortpulse = 0,
pulsefreq = 0,
batchtrans = FALSE,
timepars = FALSE,
totaltime = 1000,
timeparfreq = 0,
tpinterp = "inst",
cinit = 10,
rinit = NULL,
introseq = NULL,
verbose = TRUE
)
Integer vector of length 1 for the number of consumers
Integer vector of length 1 for the number of resources
Numeric matrix or list of matrices, the elements of which
give the maximum growth rates (type 2 or 3) or resource consumption rate
constants (type 1, or type 2 when parameterised using conversion
efficiencies with effmatrix
as opposed to resource quotas with
qmatrix
). The number of rows and columns should be equal to spnum
and resnum
respectively. For time dependent parameters
(with timepars
= TRUE), expects a list of length 2.
Numeric matrix or list of matrices, the elements of which
give the of half saturation constants (type 2 or type 3, ignored if
funcresp = "type1"). The number of rows and columns should be equal to
spnum
and resnum
respectively. For time dependent parameters
(with timepars
= TRUE), expects a list of length 2.
Numeric matrix or list of matrices, the elements of which
give the resource quotas. The number of rows and columns should be equal to
spnum
and resnum
respectively. For time dependent parameters
(with timepars
= TRUE), expects a list of length 2.
Default = 0.001 for all consumers.
Numeric matrix of resource conversion efficiencies.
The number of rows should be equal to spnum
and resnum
respectively.
NB. Incompatible with specification of resource quotas. Function will
throw an error if both specified.
Character vector of length 1 or length equal to spnum
.
Options include "type1", 'type2", or "type3".
Logical vector of length 1. If FALSE resources are substitutable.
Logical. Default is resources supplied continuously (chemostat). If FALSE resources grow logistically.
Numeric vector or list of vectors of length 1 or
length = spnum
, specifying density independent mortality rates.
For time dependent parameters
(with timepars
= TRUE), expects a list of length 2.
Numeric vector of length 1 specifying resource intrinsic
rate of increase (if chemo = FALSE), or otherwise chemostat dilution
rate. Set to zero for pulsing only. For continuous dilution of resource
without resource supply, resspeed
should be non-zero with resconc
set to zero.
Numeric vector of length 1 or length = resnum
specifying
resource carrying capacity (if chemo = FALSE), or otherwise chemostat
supply concentration
Resource pulse size.
Consumer mortality fraction if non-constant mortality (e.g. serial-batch transfer).
Frequency of resource pulsing and/or intermittent mortality.
If TRUE, both resource is also fractionally sampled (see vignette).
If TRUE, time dependent parameters required.
Total simulation time
Frequency of parameter switching if timepars = TRUE.
Either "inst" (default), "lin" or "sine" interpolation of
time dependent parameters. If "inst", parameters switch instantaneously
with frequency given by timeparfreq
. If "lin" or "sine", parameters
are interpolated linearly or sinusoidaly, respectively, with period 2x
timeparfreq
.
Numeric vector of length 1 or length = spnum
specifying
initialconsumer state values (densities). Defaults to 10 for all
consumers.
Numeric vector of length 1 or length = resnum
specifying
initial resource state values (concentrations). Defaults to value given
in resconc
.
Time sequence as a vector for consumer introductions. Vector length must equal spnum.
If TRUE (default) prints model and simulation summary specs.
S3 object of class rescomp
.
# Single type I consumer on a single logistically growing resource
spec_rescomp()
#> Model properties
#> * 1 consumer(s) and 1 resource(s)
#> * Consumers have type 1 functional responses
#> * Resource supply is continuous (e.g. chemostat)
#> * Mortality is continuous
#>
#> Simulation properties
#> * Simulation time: 1000 time steps
#> * Init state: consumer(s) = [10], resource(s) = [1]
# Two type II consumers and two substitutable resources in a chemostat
pars <- spec_rescomp(
spnum = 2,
resnum = 2,
funcresp = "type2",
mumatrix = matrix(c(
0.7, 0.3,
0.4, 0.5
),
nrow = 2,
ncol = 2,
byrow = TRUE
),
resspeed = 3,
resconc = 1,
chemo = TRUE,
essential = FALSE
)
#> Model properties
#> * 2 consumer(s) and 2 resource(s)
#> * Consumers have type 2 functional responses
#> * Resources are substitutable
#> * Resource supply is continuous (e.g. chemostat)
#> * Mortality is continuous
#>
#> Simulation properties
#> * Simulation time: 1000 time steps
#> * Init state: consumer(s) = [10, 10], resource(s) = [1, 1]