Proposals:

• 1988: Long-Term Ecological Research (LTER) on the Luquillo Experimental Forest (LEF)

• 1994: LTER on the LEF II

• 2000: LTER on the LEF III

• 2002: LTER on the LEF IIIb

• 2006: Understanding Change in Ecosystems of Northeast Puerto Rico

• 2012: Environment Change in Northeast Puerto Rico

• 2015: Understanding ecosystem change in Northeastern Puerto Rico

• 2018: Understanding ecosystem change in Northeastern Puerto Rico