mizer2.5.3 package

Dynamic Multi-Species Size Spectrum Modelling

getGrowthCurves

Get growth curves giving weight as a function of age

getInteraction

Deprecated function to get interaction matrix

matchNumbers

Match numbers to observations

valid_species_arg

Helper function to assure validity of species argument

validGearParams

Check validity of gear parameters and set defaults

calibrateNumber

Calibrate the model scale to match total observed number

emptyParams

Create empty MizerParams object of the right size

finalN

Size spectra at end of simulation

finalNOther

Values of other ecosystem components at end of simulation

get_required_reproduction

Determine reproduction rate needed for initial egg abundance

getCriticalFeedingLevel

Get critical feeding level

getReproductionLevel

Get reproduction level

addSpecies

Add new species

age_mat_vB

Calculate age at maturity from von Bertalanffy growth parameters

age_mat

Calculate age at maturity

getResourceDynamics

Deprecated functions for getting resource parameters

animateSpectra

Animation of the abundance spectra

BevertonHoltRDD

Beverton Holt function to calculate density-dependent reproduction rat...

box_pred_kernel

Box predation kernel

calc_selectivity

Calculate selectivity from gear parameters

calibrateBiomass

Calibrate the model scale to match total observed biomass

newMultispeciesParams

Set up parameters for a general multispecies model

calibrateYield

Calibrate the model scale to match total observed yield

compareParams

Compare two MizerParams objects and print out differences

completeSpeciesParams

Alias for validSpeciesParams()

constant_other

Helper function to keep other components constant

constantEggRDI

Choose egg production to keep egg density constant

constantRDD

Give constant reproduction rate

newSingleSpeciesParams

Set up parameters for a single species in a power-law background

customFunction

Replace a mizer function with a custom version

default_pred_kernel_params

Set defaults for predation kernel parameters

defaults_edition

Default editions

different

Check whether two objects are different

distanceMaxRelRDI

Measure distance between current and previous state in terms of RDI

distanceSSLogN

Measure distance between current and previous state in terms of fish a...

double_sigmoid_length

Length based double-sigmoid selectivity function

gear_params

Gear parameters

get_f0_default

Get default value for f0

get_gamma_default

Get default value for gamma

get_h_default

Get default value for h

get_initial_n

Calculate initial population abundances

get_ks_default

Get default value for ks

get_phi

Get values from feeding kernel function

get_size_range_array

Get size range array

get_time_elements

Get_time_elements

getBiomass

Calculate the total biomass of each species within a size range at eac...

getCommunitySlope

Calculate the slope of the community abundance

getComponent

Get information about other ecosystem components

getDiet

Get diet of predator at size, resolved by prey species

getEffort

Fishing effort used in simulation

getEGrowth

Get energy rate available for growth

getEncounter

Get encounter rate

getERepro

Get energy rate available for reproduction

getEReproAndGrowth

Get energy rate available for reproduction and growth

getESpawning

Alias for getERepro()

getFeedingLevel

Get feeding level

getFMort

Get the total fishing mortality rate from all fishing gears by time, s...

getFMortGear

Get the fishing mortality by time, gear, species and size

getM2

Alias for getPredMort()

getM2Background

Alias for getResourceMort()

getMeanMaxWeight

Calculate the mean maximum weight of the community

getMeanWeight

Calculate the mean weight of the community

newTraitParams

Set up parameters for a trait-based multispecies model

getMort

Get total mortality rate

getN

Calculate the number of individuals within a size range

getParams

Extract the parameter object underlying a simulation

getPhiPrey

Get available energy

getPredMort

Get total predation mortality rate

noRDD

Give density-independent reproduction rate

getPredRate

Get predation rate

getProportionOfLargeFish

Calculate the proportion of large fish

getRates

Get all rates

getRDD

Get density dependent reproduction rate

getRDI

Get density independent rate of egg production

getResourceMort

Get predation mortality rate for resource

getSSB

Calculate the SSB of species

getTimes

Times for which simulation results are available

getYield

Calculate the rate at which biomass of each species is fished

getYieldGear

Calculate the rate at which biomass of each species is fished by each ...

getZ

Alias for getMort()

indicator_functions

Description of indicator functions

initial_effort

Initial fishing effort

initialN-set

Initial values for fish spectra

initialNOther-set

Initial values for other ecosystem components

initialNResource-set

Initial value for resource spectrum

knife_edge

Weight based knife-edge selectivity function

NOther

Time series of other components

l2w

Length-weight conversion

log_breaks

Helper function to produce nice breaks on logarithmic axes

lognormal_pred_kernel

Lognormal predation kernel

matchBiomasses

Match biomasses to observations

matchGrowth

Adjust model to produce observed growth

matchYields

Match yields to observations

mizer-package

mizer: Multi-species size-based modelling in R

mizerEGrowth

Get energy rate available for growth needed to project standard mizer ...

mizerEncounter

Get encounter rate needed to project standard mizer model

mizerERepro

Get energy rate available for reproduction needed to project standard ...

mizerEReproAndGrowth

Get energy rate available for reproduction and growth needed to projec...

mizerFeedingLevel

Get feeding level needed to project standard mizer model

mizerFMort

Get the total fishing mortality rate from all fishing gears

mizerFMortGear

Get the fishing mortality needed to project standard mizer model

mizerMort

Get total mortality rate needed to project standard mizer model

MizerParams-class

A class to hold the parameters for a size based model.

plot-MizerParams-missing-method

Summary plot for MizerParams objects

MizerParams

Alias for set_multispecies_model()

mizerPredMort

Get total predation mortality rate needed to project standard mizer mo...

mizerPredRate

Get predation rate needed to project standard mizer model

mizerRates

Get all rates needed to project standard mizer model

sigmoid_weight

Weight based sigmoidal selectivity function

mizerRDI

Get density-independent rate of reproduction needed to project standar...

mizerResourceMort

Get predation mortality rate for resource needed to project standard m...

MizerSim-class

A class to hold the results of a simulation

MizerSim

Constructor for the MizerSim class

N

Time series of size spectra

needs_upgrading

Determine whether a MizerParams or MizerSim object needs to be upgrade...

newCommunityParams

Set up parameters for a community-type model

plotBiomass

Plot the biomass of species through time

plotBiomassObservedVsModel

Plotting observed vs. model biomass data

plotDataFrame

Make a plot from a data frame

plotDiet

Plot diet, resolved by prey species, as function of predator at size.

plotFeedingLevel

Plot the feeding level of species by size

species_params

Species parameters

plotFMort

Plot total fishing mortality of each species by size

plotGrowthCurves

Plot growth curves

plotM2

Alias for plotPredMort()

plotMizerSim

Summary plot for MizerSim objects

plotPredMort

Plot predation mortality rate of each species against size

plotSpectra

Plot the abundance spectra

plotting_functions

Description of the plotting functions

upgradeParams

Upgrade MizerParams object from earlier mizer versions

plotYield

Plot the total yield of species through time

plotYieldGear

Plot the total yield of each species by gear through time

plotYieldObservedVsModel

Plotting observed vs. model yields

power_law_pred_kernel

Power-law predation kernel

upgradeSim

Upgrade MizerSim object from earlier mizer versions

project_simple

Project abundances by a given number of time steps into the future

project

Project size spectrum forward in time

projectToSteady

Project to steady state

reexports

Objects exported from other packages

removeSpecies

Remove species

renameSpecies

Rename species

resource_constant

Keep resource abundance constant

valid_gears_arg

Helper function to assure validity of gears argument

resource_logistic

Project resource using logistic model

resource_params

Resource parameters

resource_semichemostat

Project resource using semichemostat model

RickerRDD

Ricker function to calculate density-dependent reproduction rate

saveParams

Save a MizerParams object to file, and restore it

scaleModel

Change scale of the model

set_community_model

Deprecated function for setting up parameters for a community-type mod...

set_multispecies_model

Deprecated obsolete function for setting up multispecies parameters

set_species_param_default

Set a species parameter to a default value

set_trait_model

Deprecated function for setting up parameters for a trait-based model

setBevertonHolt

Set Beverton-Holt reproduction without changing the steady state

setColours

Set line colours and line types to be used in mizer plots

setComponent

Add a dynamical ecosystem component

setExtEncounter

Set external encounter rate

setExtMort

Set external mortality rate

setFishing

Set fishing parameters

setInitialValues

Set initial values to values from a simulation

setInteraction

Set species interaction matrix

setMaxIntakeRate

Set maximum intake rate

setMetabolicRate

Set metabolic rate

setMetadata

Set metadata for a model

setParams

Set or change any model parameters

setPredKernel

Set predation kernel

setRateFunction

Set own rate function to replace mizer rate function

setReproduction

Set reproduction parameters

setResource

Set resource dynamics

setRmax

Alias for setBevertonHolt()

setSearchVolume

Set search volume

SheperdRDD

Sheperd function to calculate density-dependent reproduction rate

sigmoid_length

Length based sigmoid selectivity function

steady

Set initial values to a steady state for the model

steadySingleSpecies

Set initial abundances to single-species steady state abundances

summary_functions

Description of summary functions

summary-MizerParams-method

Summarize MizerParams object

summary-MizerSim-method

Summarize MizerSim object

truncated_lognormal_pred_kernel

Truncated lognormal predation kernel

validParams

Validate MizerParams object and upgrade if necessary

validSim

Validate MizerSim object and upgrade if necessary

validSpeciesParams

Validate species parameter data frame

w

Size bins

A set of classes and methods to set up and run multi-species, trait based and community size spectrum ecological models, focused on the marine environment.

  • Maintainer: Gustav Delius
  • License: GPL-3
  • Last published: 2024-10-17