Conesprings {NetIndices} | R Documentation |
Cone spring ecosystem (Tilly, 1968) adapted for input - output analysis by Williams & Crouthamel (1972) in Szyrmer & Ulanowicz (1987, Fig. 1, p. 129) and Ulanowicz & Norden (1990, Fig. 1, p. 435).
This is example 1a from Latham (2006).
The food web comprises 5 functional compartments:
and two export compartments
and one import compartment
Conesprings
matrix with Tij values, where element (i,j) denotes flow from compartment j to i
rownames and columnames are the components
Karline Soetaert <k.soetaert@nioo.knaw.nl>
Latham LG. 2006. Network flow analysis algorithms. Ecological Modelling 192: 586-600.
Szyrmer, J., & Ulanowicz, R. E. (1987). Total flows in ecosystems. Ecol. Model. 35, 123..136.
Tilly, L. J. (1968). The structure and dynamics of Cone Spring. Ecol. Monogr. 38, 169..197.
Ulanowicz, R. E., & Norden, J. S. (1990). Symmetrical overhead in flow networks. Int. J. Systems Sci. 21, 429..437.
Williams, M., & Crouthamel, D. (1972). Systems analysis of Cone Spring. Unpublished manuscript. University of Georgia, Athens, Georgia.
GenInd(Tij=Conesprings,Import="Inflows", Export=c("Export","Dissipation")) AscInd(Tij=Conesprings,Import="Inflows", Export=c("Export","Dissipation"), Dissipation="Dissipation") UncInd(Tij=Conesprings,Import="Inflows", Export=c("Export","Dissipation")) EffInd(Tij=Conesprings,Import="Inflows", Export=c("Export","Dissipation")) EnvInd(Tij=Conesprings,Import="Inflows", Export=c("Export","Dissipation"),full=TRUE)