CTAP plant and bird data can be requested by contacting David Zaya (dzaya1 [at] illinois {dot} edu).


CTAP plant data include ground cover estimates for vascular species, shrub frequency, tree frequency and size (dbh), and observations of other species present at a site.  Bird data include the occurrence or abundance of individual species as well as the number of species found at a particular site. 


Data files can be made available in multiple formats. 


David Zaya sampling at a CTAP wetland site
(perhaps collecting data you will one day use)