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Published Papers (English)
The Andean Bear, First Experiences With The Rehabilitation And Liberation Of Three Bears. Castellanos, A. 2000. The Andean Bear, First Experiences With The Rehabilitation And Liberation Of Three Bears. UKUKU, Boletín Informativo sobre la conservación del oso andino 2 (3):10-16. in: http://ukuku.cjb.net.
My Encounter With A Wild Andean Bear. Castellanos, A. 2000. My Encounter With A Wild Andean Bear. UKUKU, Boletín Informativo sobre la conservación del oso andino 2 (3): 16- 17. in: http://ukuku.cjb.net.
Ecology and Behavior of Reintroduced Andean Bears in the Biological Reserve Maquipucuna, Ecuador: Implications in Conservation Castellanos, A. 2001. Ecology and Behavior of Reintroduced Andean Bears in the Biological Reserve Maquipucuna, Ecuador: Implications in Conservation. UKUKU, Boletín Informativo sobre la conservación del oso andino Año 3, N° 2 in: http://ukuku.cjb.net
Attacks By Andean Bears On Livestock In The Cosanga River Watershed, Ecuador Castellanos, A. 2002. Attacks By Andean Bears On Livestock In The Cosanga River Watershed, Ecuador. UKUKU, Boletín Informativo sobre la Conservación del Oso Andino, Año 4. N° 3 in: http://ukuku.cjb.net
Martín, A Bear Who Fought for His Freedom Castellanos, A. 2003. Martin, A Bear's Fight for Freedom. UKUKU, Boletín Informativo sobre la conservación del oso andino: http://ukuku.cjb.net. Artículos individuales.
Reports of Andean Bear (Tremarctos ornatus ) attacks on bovine livestock in Ecuador Castellanos, A. 2003. Reports of Andean Bear (Tremarctos ornatus) attacks on bovine livestock in Ecuador . In Memorias de las XXVII Jornadas Ecuatorianas de Biología, "Pedro Nuñez Lucio". pp 76-77. Sociedad Ecuatoriana de Biología, Escuela de Biología de la Universidad Central del Ecuador. Quito.
Ecological Data on the Andean Bear (Tremarctos ornatus ) in the Alto Chocó Reserve, Ecuador Castellanos, A. 2003. Ecological Data on the Andean Bear (Tremarctos ornatus) in the Alto Chocó Reserve, Ecuador. In Memorias de las XXVII Jornadas Ecuatorianas de Biología, "Pedro Nuñez Lucio". pp 77-78. Sociedad Ecuatoriana de Biología, Escuela de Biología de la Universidad Central del Ecuador.Quito.
Andean Bear Research Project In The Intag Region, Ecuador Castellanos, A. 2004. Andean Bear Research in the Intag Region, Ecuador. International Bear News, Quarterly Newsletter of the International Association for Bear Research and Management (IBA) and the IUCN/SSC Bear Specialist Group 13 (2):25-26
Intag Andean Bear’s Project Update Castellanos, A. 2004. Intag Andean Bear Project Update. 2004 International Bear News, Quarterly Newsletter of the International Association for Bear Research and Management (IBA) and the IUCN/SSC Bear Specialist Group, 13 (4):27.
Reinforcement of Andean Bear (Tremarctos ornatus) populations in the Alto Choco Reserve and neighboring areas, northern Ecuador. Castellanos, A. 2005. Reinforcement of Andean Bear (Tremarctos ornatus) populations in the Alto Choco Reserve and neighboring areas, northern Ecuador. Pp 12-13 In Soorae, P.S, (Ed).Re-introduction News. Newsletter of the IUCN/SSC Reintroduction Specialist Group, Abu Dhabi. UAE. Nº 24: 52 pp (ISSN: 1560-3709).
Microsatellite Analysis of the Spectacled Bear (Tremarctos ornatus) Across its Range Distribution. Ruiz-Garcia, M., P. Orozco-Terwengel, A. Castellanos, L. Arias 2005. Microsatellite Analysis of the Andean Bear Across its Range of Distribution, Genes and Genetics Systems 80(1): 57-69.
Cannibalism in Andean Bears?. Castellanos, A. 2006. International Bear News, Quarterly Newsletter of the International Association for Bear Research and Management (IBA) and the IUCN/SSC Bear Specialist Group, 15(4):20
Andean Bears jump from treetops. Castellanos, A. 2006. International Bear News, Quarterly Newsletter of the International Association for Bear Research and Management (IBA) and the IUCN/SSC Bear Specialist Group, 15(4):20-21
Andean Bears jump from treetops. Castellanos, A. 2006. International Bear News, Quarterly Newsletter of the International Association for Bear Research and Management (IBA) and the IUCN/SSC Bear Specialist Group, 15(4):20-21
Preliminary results of the three-year telemetry study of Andean bear in the Intag Region, Ecuador. 2005. In: Abstracts Program Information, 16 the International conference on bear research and management, sept 27th – Oct 1st 2005. Riva del Garda, Trentino, Italy pp 60
Castellanos, A. 2007. Andean Bear Project, Ecuador. In: Final Proceedings, Zoos and Aquariums Committing to Conservation, January 26th – 31. Houston, USA, pp 36