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Located in the Luquillo Experimental Forest, Puerto Rico

Our site is located in a wet tropical forest in eastern Puerto Rico. The Luquillo Experimental Forest (LEF), also known as El Yunque National Forest, is an important area for research on the island.   The site is part of the Luquillo Long-Term Ecological Research Program as well as the Luquillo Critical Zone Observatory.


We are working  at an elevation of 100 m.a.s.l. (Carter et al. 2020)  The highest point of the Luquillo Mountains is  El Yunque Peak at 1,065 m in elevation. 

Aerial view of three of the experimental plots within our
experimental site in the Luquillo Experimental Forest, Luquillo, PR 
(Photo credit: Maxwell Farrignton)

The experimental site receives on average 3500 mm of rainfall per year and the mean annual temperatures is 24 C; with Ultisol soil classification. Although there are no big season differences, what is perceived as the wet season extends from May through November, and months from January through April are drier on average. 


Hurricanes are a recurrent disturbance for the LEF, and they shape the communities composition and forest structure of our site. The most dominant tree species prior to Hurricanes Irma and Maria (in 2017) was Prestoea montana. After a complete canopy loss and a shift in the community composition the two most dominant species are Cecropia schreberiana and Psychotria brachiata (Fig. 1)

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Cecropia and Toddy.png
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