NumberOfTrophicLinks {cheddar}

Number of trophic links

Description

The number of trophic links in Community.

Usage

NumberOfTrophicLinks(community) 
LinkageDensity(community) 
DirectedConnectance(community) 

Arguments

community

an object of class Community.

Details

NumberOfTrophicLinks returns the total number of links in the web, including cannibalistic links.

LinkageDensity returns the NumberOfTrophicLinks / NumberOfNodes, including cannibalistic links and isolated nodes.

DirectedConnectance returns NumberOfTrophicLinks / NumberOfNodes^2, including cannibalistic links and isolated nodes.

Value

A single number.

Author(s)

Lawrence Hudson

References

Martinez, N. D. 1991 Artifacts or attributes? Effects of resolution on the Little Rock Lake food web. Ecological Monographs 61, 367–392.

See Also

NumberOfNodes

Examples

data(TL84)

NumberOfTrophicLinks(TL84)
LinkageDensity(TL84)
DirectedConnectance(TL84)