Los nombres en negritas corresponden a los mentores de la investigación.
1. Estrada, A. R., K. Rodríguez-Rodríguez y L. Modet Burgos. 2000. Spectral and temporal characteristic of advertisement calls from mountain coqui (Eleutherodactylus portoricensis) in two localities of Puerto Rico. Proceeding of the Fall XI Undergraduate Research Symposium. [Oral Presentation] Oct. 20-22, 2000. Universidad Metropolitana, San Juan, Puerto Rico. pp. 32.pdf
2. Estrada, A. R. and A. Tirado. 2001. Eleutherodactylus richmondi Stejneger (Anura: Leptodactylidae): Comparison of their calls in various mountain regions in Puerto Rico. Proceeding of the Spring Undergraduate Research Symposium. [Poster Presentation] May 25, 2001. Universidad Metropolitana, San Juan, Puerto Rico. pp. 22. pdf
3. Estrada, A. R., Karina Rodríguez Rodríguez and Carem Vega Ríos. 2001 Eleutherodactylus eneidae Rivero (Anura: Leptodactylidae): Comparison of its calls in the Central Mountain Range and Sierra de Luquillo. Proceeding of the Spring Undergraduate Research Symposium.[Oral Presentation] May 25, 2001. Universidad Metropolitana, San Juan, Puerto Rico. pp. 24. pdf
4. Estrada, A. R. and A. Tirado. 2001. Eleutherodactylus richmondi Stejneger (Anura:Leptodactylidae) Comparison of their calls in two mountain localities of Puerto Rico. Proceeding of the XII Fall Undergraduate Research Symposium. [Poster Presentation] Oct. 19-21, 2001. Universidad Metropolitana, San Juan, Puerto Rico. pp. 28. pdf
5. Estrada, A. R. Luis Falú, Luis A. Jiménez, Marcos Liriano and Marvin Montalvo 2001. The Calls of Eleutherodactylus cochranae Grant, Analysis of Spectral and Temporal Variation. Proceeding of the Winter Pre-College Research Symposium.[Poster Presentation] Dec.1, 2001. Universidad Metropolitana, San Juan, Puerto Rico. pp. 15. pdf
6. Estrada, A. R., Migdia Karina-Santiago and Reinaldo Santos. 2001. A research model on Puerto Rican Amphibian Bioacustics Proceding of the Winter Pre-College Research Symposium. Dec.1, 2001. Universidad Metropolitana, San Juan, Puerto Rico. pp. 16.
7. Estrada, A. R., Tamara Ayala, Rosalis Ortiz, Xiomara Villanueva, Verónica Rivera. 2001. Spectral and temporal characteristics of advertisemnt calls of Eleutherodactylus locustus Schmidt from Carite and El Yunque forests. Proceeding of the Winter Pre-College Research Symposium.[Oral Presentation] Dec.1, 2001. Universidad Metropolitana, San Juan, Puerto Rico. pp. 16. pdf
8. Estrada, A. R., J. M. González, F. González W. Reynoso and J. Villafañe. 2002. Clinal variation of the advertisement calls of the mountain coqui Eleutherodactylus portoricensis (Anura: Leptodactylidae) in the Luquillo Range. Proceeding of the Spring Undergraduate Research Symposium. May 24, 2002. Universidad Metropolitana, San Juan, Puerto Rico. pp. 21.
9. Estrada, A. R., W. De Jesús-Arocho, And R. Sierra-Castro. 2002. Sinopsis of the speleofauna of Puerto Rico. Proceeding of the Spring Undergraduate Research Symposium. May 24, 2002. Universidad Metropolitana, San Juan, Puerto Rico. pp. 35.
10. Estrada, A. R. Luis Falú, Luis A. Jiménez, Marcos Liriano, Marvin Montalvo, Sinian Balazquide, Rebeca Pérez, Keren Santiago and Liliana Quintana. 2001. Spectral and Temporal Calls Variation of Eleutherodactylus cochranae Grant, in Two Localities of Puerto Rico. Proceeding of the Spring Pre-College Research Symposium. May 25, 2002. Universidad Metropolitana, San Juan, Puerto Rico. pp. 19. pdf
11. Estrada, A. R., R. Santos, X. Villanueva, R. Ramírez, R. Rodríguez, A. Castro, L. Carrasquillo, C. A. Rosa, M. Santiago and J. Torres. 2002. Spectral and Temporal Variation of Advertisement Calls of Eleutherodactylus locustus Schmidt between Two Mountain Localities in Puerto Rico. Proceeding of the Spring Pre-College Research Symposium. May 25, 2002. Universidad Metropolitana, San Juan, Puerto Rico. pp. 20.
12. Estrada, A. R., J. González, J. Villafañe, P. Sánchez, O. Monzón and J. Estrada. Altitudinal clinal variation of the advertisement calls of the mountain coqui Eleutherodactylus portoricensis (Anura: Leptodactylidae) in the Luquillo Range. Proceeding of the Fall XIII Undergraduate Research Symposium. Oct. 18-20, 2002. Universidad Metropolitana, San Juan, Puerto Rico. pp. 29.
13. Estrada, A. R., L. Guzmán, R. Rodríguez, L. Quintana, K. Santiago, N. Narváes, J. Quiles and A. Ayala. 2002. Ornithocenosis of the Lineal Park, San Juan, Puerto Rico Proceeding of the Winter Pre-College Research Symposium. Dec. 14, 2002. Universidad Metropolitana, San Juan, Puerto Rico. pp. 16.
14. Estrada, A. R., L. Guzmán, R. Rodríguez, L. Quintana, K. Santiago, N. Narváes, J. Quiles and A. Ayala. 2002. The green iguana (Iguana iguana) from the Enrique Martí Coll Lineal Park in San Juan, Puerto Rico. Proceeding of the Winter Pre-College Research Symposium. Dec. 14, 2002. Universidad Metropolitana, San Juan, Puerto Rico. pp. 17.
15. Estrada, A. R., L. Guzmán, L. Carrasquillo, M. Santiago, S. Balazquide, C. Reyes and A. Castro. 2002. The trophic guilds of the ornithocenosis in the Lineal Park, San Juan, Puerto Rico. Proceeding of the Winter Pre-College Research Symposium. Dec. 14, 2002. Universidad Metropolitana, San Juan, Puerto Rico. pp. 18.
16. Estrada, A. R., Nohely M. Vélez Torres, Alberto Estrada-Acosta, Carolina Sánchez, and Linda R. Novoa Jubino. 2003. Ecological evaluation of a bird community in the Piñones Forest in Loíza, Puerto Rico. Proceeding of the Summer Pre-College Research Symposium. Aug. 9, 2003. Universidad Metropolitana, San Juan, Puerto Rico. pp. 16.pdf
17. Estrada, A. R., Eduardo López Ríos, Diana Dávila Torres, Alexis Salgado Cardona, and Isis Orosco Cancel,.The green iguana (Iguana iguana) in the Piñones Forest in Loiza, Puerto Rico. Proceeding of the Summer Pre-College Research Symposium. Aug. 9, 2003. Universidad Metropolitana, San Juan, Puerto Rico. pp. 17.
18. Estrada, A. R., A. Estrada-Puerta, Frances Oyola Reynoso, Alexis O. Blanco Gabriel, and Nereida Díaz, 2003. Community of terrestrial vertebrates in the Piñones Forest in Loíza, Puerto Rico. Proceeding of the Summer Pre-College Research Symposium. Aug. 9, 2003. Universidad Metropolitana, San Juan, Puerto Rico. pp. 18.
19. Estrada, A. R., A. Estrada-Puerta, Malubi Bracero-Estévez, Linda Novoa-Jusino, , José O. Traverzo-Torres. 2003. The trophic guilds of the birds community in the Piñones Forest, Loiza, Puerto Rico. Proceeding Winter Pre-College Research Symposium. Dec. 13, 2003. Universidad Metropolitana, San Juan, Puerto Rico. pp. 17.
20. Estrada, A. R., A. Estrada-Puerta, Alexis O. Blanco, Carolina Sánchez, Yahaira Cuevas-Rivera, and Edithmarie Velázquez-Irizarry. 2003. Censuses of birds in the Piñones Forest, Loíza, Puerto Rico. Proceeding Winter Pre-College Research Symposium. Dec. 13, 2003. Universidad Metropolitana, San Juan, Puerto Rico. pp. 18.
21. Estrada, A. R., A. Estrada-Puerta, Pedro José Centeno-Valles, Milled A. Torres-Meléndez, Anaís S. Mirabal, and Rolado Ortiz-Dáz. 2003. The Shiny Cowbird (Molothrus bonaerensis) in the community of birds of the Piñones Forest. Proceeding Winter Pre-College Research Symposium. Dec. 13, 2003. Universidad Metropolitana, San Juan, Puerto Rico. pp. 19.
22. Estrada, A. R., A. Estrada-Puerta, Karem Caraballo, Bianca Declet, Milagros Santiago and Lizzette Morales. 2004. Acoustic Monitoring of Communities of Amphibians in Three Localities in the East of Puerto Rico. Proceeding Spring 2004 Pre-College Research Symposium, May 8, 2004. Universidad Metropolitana, San Juan Puerto Rico. pp.15.
23. Estrada, A. R., A. Estrada-Puerta, R. Ortiz-Díaz, José Traverso, Juan Traverso and D. V. Otero. 2004. Two-note Calls in Frogs from the Genus Eleutherodactylus (Anura: Leptodactylidae) From de Antilles. Proceeding Spring 2004 Pre-College Research Symposium, May 8, 2004. Universidad Metropolitana, San Juan Puerto Rico. pp.16.
24. Estrada, A. R., A. Estrada-Puerta, M. La Torre, Y. Cuevas, A. Blanco and C. Sánchez. 2004. Radio-tracking of a Manatee (Trichechus manatus) in the Boca Vieja Cove, Toa Baja, Puerto Rico. Proceeding Spring 2004 Pre-College Research Symposium, May 8, 2004. Universidad Metropolitana, San Juan Puerto Rico. pp. 17.
25. Estrada, A. R., A. Estrada-Puerta, N. Daly and Norberto Alvelo, 2004. Summer censuses of the bird community in the Piñones Forest in Loíza, Puerto Rico. Proceeding of the Summer Pre-College Research Symposium. Poster Presentation, Aug., 2004.
26. Estrada, A. R., A. Estrada-Puerta, Laura R. Merced, and Maritza González and Emmanuel Cartagena. Ecological evaluation of a bird community in El Corcho, Ceiba Forest, Naguabo, Puerto Rico. Proceeding of the Summer Pre-College Research Symposium. Poster Presentation, Aug., 2004.
27. Estrada, A. R., A. Estrada-Puerta, Ana I. Rodríguez, and Yainna Hernáiz. 2004. Terrestrial vertebrates from El Corcho, Naguabo, Puerto Rico. Terrestrial vertebrates from El Corcho, Naguabo, Puerto Rico. Poster Presentation, Aug., 2004. pdf
28. Estrada, A. R., A. Estrada-Puerta, Liliana B. Taboas Cruz, and Patricia Meléndez Otero. 2005. Fall Censuses of birds in the Piñones Forest, Loíza, Puerto Rico. Proceeding Winter Pre-College Research Symposium. Dec. 10, 2005. Universidad Metropolitana, San Juan, Puerto Rico. pp.
29. Estrada, A. R., A. Estrada-Puerta, Margueritte A. Smith Clark, and Patricia Meléndez Otero. The trophic guilds of the birds community in the Piñones Forest, Puerto Rico. Proceeding Winter Pre-College Research Symposium. Dec. 10, 2005. Universidad Metropolitana, San Juan, Puerto Rico. Oral Presentation. pp.
30. Estrada, A. R., A. Estrada-Puerta, Noelia Rodríguez Quiñones, Maricarmen Pérez Rodríguez, Erwin J. Riefkohl and Juan C. Meléndez Otero. Acoustic Monitoring of Two Communities of Amphibians in Eastern Puerto Rico. Proceeding Winter Pre-College Research Symposium. Dec. 10, 2005. Universidad Metropolitana, San Juan, Puerto Rico. Oral Presentation. pp.