RESUMENEntre el 19 y 23 de noviembre del 2000, y en el marco del curso "Uso de inventarios biológicos para revelar patrones de distribución geográfica de especies en la selva baja amazónica", organizado por el proyecto Diversidad Biológica de la Amazonía Peruana, Perú -Finlandia (BIODAMAZ), con el apoyo del Instituto de Investigaciones de la Amazonía Peruana (IIAP) y la Universidad Nacional de la Amazonía Peruana (UNAP), fueron realizadas evaluaciones de la diversidad de especies de aves en la Zona Reservada Allpahuayo -Mishana (ZRAM), y en las colinas de la Formación Nauta, Loreto. Se evaluó la presencia de especies de aves en diferentes formaciones vegetales (varillal, colinas de la Formación Pebas en la ZRAM, incluyendo unas colinas de arena blanca, y un bosque de colina en la Formación Nauta), utilizando los métodos de transecto lineal y puntos de conteo. En los tres tipos de hábitats evaluados se registró 26 familias y 152 especies de aves, siendo el bosque de colinas de Formación Pebas el que presentó mayor número de especies, seguido del varillal y las colinas de la Formación Nauta. En la ZRAM se registró cuatro especies que han sido recientemente descubiertas y que podrían ser consideradas como especies indicadoras de bosques sobre arena blanca.Palabras clave: Amazonía peruana, aves, especies indicadoras, hábitats, puntos de conteo, transectos lineales, Zona Reservada Allpahuayo -Mishana. ABSTRACTBetween 19-23 November 2000, as part of the "Use of biological inventories to reveal geographic distribution patterns of lowland Amazonian species" course, organized by the Peru-Finland Biological Diversity of the Peruvian Amazon project (BIODAMAZ), with the support of the Peruvian Amazonian Research Institute (IIAP) and the Peruvian Amazonian National University (UNAP), surveys were conducted on bird species diversity in the Allpahuayo-Mishana Reserved Zone (ZRAM) and in the hilly areas of the Nauta geological formation, Loreto. The presence of birds was studied in different forest types (white-sand forest, hilly forest areas on the Pebas geological formation in the ZRAM, including some white sand hills, and one hilly forest area on the Nauta geological formation). The surveys were made using line transects and point counts. In the three types of habitats surveyed 26 families and 152 species of birds were registered. The highest number of species was found in the hilly forest area on the Pebas geological formation, followed by the white-sand forest and the hilly forest area on the Nauta geological formation. In the ZRAM four recently-discovered species were registered; these can be considered indicator species for white-sand forests.
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