U.S. Department of Agriculture1. Historical maps of land use in Puerto Rico in 1951
- Author(s):
- Helmer, Eileen H.; Córdova, Juan R.; Quiñones, Maya; Hubing, Nick
2. Maps of Puerto Rico and Virgin Islands forest functional groups, biomass, height, and species counts (2001-2008) and satellite image composites (1980-2000)
- Author(s):
- Helmer, Eileen H.; Ruzycki, Thomas S.; Wilson, Barry T.; Sherrill, Kirk R.; Lefsky, Michael A.; Marcano-Vega, Humfredo; Brandeis, Thomas J.; Erickson, Heather E.; Reufenacht, Bonnie
3. Forest age map, tree species traits and Landsat phenology metrics for Puerto Rico and the U.S. Virgin Islands
- Author(s):
- Helmer, Eileen H.; Kay, Shannon L.; Marcano-Vega, Humfredo; Powers, Jennifer S.; Wood, Tana E.; Zhu, Xiaolin; Gwenzi, David; Ruzycki, Thomas S.
4. St. Kitts, Nevis, St. Eustatius, Grenada, and Barbados land cover and forest formations (1999-2003)
- Author(s):
- Helmer, Eileen H.; Kennaway, Todd A.; Pedreros, Diego H.; Clark, Matthew L.; Marcano-Vega, Humfredo; Tieszen, Larry L.; Ruzycki, Thomas S.; Schill, S. R.; Carrington, C. M. Sean
5. Puerto Rico, Vieques and Culebra land cover and forest formations circa 2000
- Author(s):
- Kennaway, Todd A.; Helmer, Eileen H.
6. Virgin Islands land cover and forest structure
- Author(s):
- Kennaway, Todd A.; Helmer, Eileen H.; Lefsky, Michael A.; Brandeis, Tom J.; Sherrill, Kirk R.
7. Cloud forest data for "Neotropical cloud forests and páramo to contract and dry from declines in cloud immersion and frost"
- Author(s):
- Helmer, Eileen H.; Gerson, Elizabeth A.; Baggett, L. Scott; Bird, Benjamin J.; Ruzycki, Thomas S.; Voggesser, Shannon M.