cheddar (version 0.1-639)

Body mass, numerical abundance and biomass abundance: Body mass, numerical abundance and biomass abundance

Description

Convenience functions for accessing log10-transformed body mass, M, numerical abundance, N, and biomass abundance, B.

Usage

Log10M(community)
Log10N(community)
Biomass(community)
Log10Biomass(community)
Log10MNBiomass(community)
RCMRatio(community)
Log10RCMRatio(community)
CRMRatio(community)
Log10CRMRatio(community)

Value

A vector of length NumberOfNodes or a vector of length NumberOfTrophicLinks

Arguments

community

an object of class Community.

Author

Lawrence Hudson

Details

Log10M, Log10N, Biomass, Log10Biomass and each return a value per node. Log10MNBiomass returns a matrix with a row per node and columns `Log10M', `Log10N' and `Log10Biomass'. These functions are all suitable for use with NPS.

RCMRatio returns the ratio between the resource and consumer body mass for every trophic link. Log10RCMRatio returns the same data log10-transformed. CRMRatio and Log10CRMRatio are analagous functions that return the ratio between the consumer and resource body mass. These functions are all suitable for use with TLPS.

See Also

NumberOfNodes, NPS, NumberOfTrophicLinks, TLPS

Examples

data(TL84)

NPS(TL84, c('M', 'Log10M', 'N', 'Log10N', 'Biomass', 'Log10Biomass'))

NPS(TL84, 'Log10MNBiomass')

TLPS(TL84, link.properties=c('Log10RCMRatio', 'Log10CRMRatio'))