|Variables Descriptions||Data File||Date Range|
|Phase 2 Fern Measurements||FERNPH02.csv||2001-01-01 to 2010-01-31|
|Defoliated sporophytes||FERNDEFO.csv||1996-01-01 to 2010-01-31|
|Fern growth observations in the Luquillo Experimental Forest||FERNGROWTH.csv||1991-09-01 to 2010-01-31|
|Field notes||FERNFLD.csv||1991-09-01 to 2010-01-31|
|Dates and times that sites were monitored||FERNDATES.csv||1991-09-01 to 2010-01-31|
|Plant control and ecological data||FERNSEQ.csv||1991-09-01 to 2010-01-31|
Long-term (20-year) monitoring sites for monitoring ferns were established in the Luquillo Experimental Forest in 1991. Individuals of approximately 20 species of ferns were monitored on a regular basis from September 1991 through January 2010 to document annual and seasonal variation in plant and leaf traits, leaf and spore production rates, as well as and leaf damage levels. Effects of natural disturbanceincluding a drought in 1994 and Hurricane Georges in 1998 are reflected in these observations. The study includes sites in the El Verde, and Espiritu Santo and Bisley watersheds. The data set also includes observations from a comparative study of ferns in the mangrove community at the Jobos Bay National Estuarine Research Reserve that was begun in January 1998 and completed in January 2001.