Supplement 1. The two C codes, metacommunity.c and localcommunity.c, mentioned in the paper used in the simulation of metacommunities and local communities.

File List
localcommunity.c
-- C source code

metacommunity.c
-- C source code

localcommunity.out
-- compiled code

metacommunity.out
-- compiled code

Description
Program metacommunity.c
simulates dominance diversity curves under equilibrium between speciation
and extinction by drift, using Ewens's algorithm. (See top of the program
file for more details.)

Program localcommunity.c
simulates community drift with immigration. (See top of the program file for
more details.)

Both programs interactively ask
for the input parameters. The program

localcommunity
requires, in addition, data generated by the program

metacommunity.

The two programs have been tested
in a variety of C compilers, therefore they should compile and run in most
systems without problems. In Unix systems (including MAX OSX and Linux) the
compile instruction is for metacommunity.c
and localcommunity.c, respectively:

cc metacommunity.c -lm

cc localcommunity.c -lm

or

gcc metacommunity.c -lm

gcc localcommunity.c -lm

Both programs make use of the
subroutine "ran2" of Press et al 1992. Numerical Recipes in C. This
can be found in both listings of the programs. We strongly discourage any
attempts to change the function ran2, unless the reader is familiar with the
procedures to generate pseudo-random numbers.

Press, W. H., S. A. Teukolsky,
W. T. Vetterling, and B. P. Flannery. 1992. Numerical Recipes in C, Second
Edition. Cambridge University Press, Cambridge, UK.