Jofre Carnicer, Pedro Jordano, and Carlos J. Melián. 2009. The temporal dynamics of resource use by frugivorous birds: a network approach. Ecology 90:1958–1970.

Supplement

MATLAB code used in the calculation of asymmetry values.
Ecological Archives E090-135-S1.

Copyright

Authors
File list (downloads)
Description

Author(s)

Carlos J. Melian
National Center for Ecological Analysis and Synthesis (NCEAS)
Unibversity of California Santa Barbara (UCSB)
735 State Street, Suite 300
Santa Barbara, CA 93101 USA
E-mail: melian@nceas.ucsb.edu

File list

Asymmetry.m -- main script
corr.m -- supplementary script
intimp.m -- supplementary script
quant2bin.m -- supplementary script
soertmatr.m -- supplementary script

Description

This Supplement contains a Matlab script used to calculate asymmetry values. Asymmetry.m needs four supplementary scripts ( corr.m, intimp.m, quant2bin.m, soertmatr.m).

Asymmetry.m generates the following outputs: total degree each row (1st column); frequency of interactions each row (2nd column); sum dependences each row (3rd column); asymmetry value for each row (4th column). Finally, it gives the correlation values between abundance and asymmetry.

LITERATURE CITED

Vazquez, D. P., C. J. Melian, N. M. Williams, N. Bluthgen, B. R. Krasnov, and R. Poulin. 2007. Species abundance and asymmetric interaction strength in ecological networks. Oikos 116:1120–1127.