Presences and absences of birds at different elevations along a tropical gradient. Species names are indicated as column names.
site_sp_birds
A matrix with 217 columns (1 per species) and 8 rows:
is species present at 250 m elevation? 0=No, 1=Yes
is species present at 500 m elevation? 0=No, 1=Yes
is species present at 1000 m elevation? 0=No, 1=Yes
is species present at 1500 m elevation? 0=No, 1=Yes
is species present at 2000 m elevation? 0=No, 1=Yes
is species present at 2500 m elevation? 0=No, 1=Yes
is species present at 3000 m elevation? 0=No, 1=Yes
is species present at 3500 m elevation? 0=No, 1=Yes