Tropical Ecology and Conservation [Monteverde Institute]

Alternative Title

Diversidad gremial de alimentación Aviar en las fincas de café cultivado al sol y en la sombra en el valle de San Luis, Monteverde, Costa Rica



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Publication Date

August 2006


Three coffee farms were studied to determine avian feeding guild diversity differences between sun-grown and shade-grown plots in San Luis Valley, Monteverde, Costa Rica. Sun-grown and shade-grown plots were observed on three coffee farms, species were identified by sight, and separated into feeding guilds. Using the Shannon-Weiner Diversity Index, we found a significantly greater overall avian diversity in sun-grown plots (Modified t-test, t= -4.00, df = 267.36). We also found no significant difference in feeding guild diversity between sun-grown and shade-grown plots, but found a significant difference within insectivorous and omnivorous feeding guilds supporting greater diversity in the sun-grown plots (Modified t-Test, Insectivorous: p > 0.05 t = -2.28, df = 102.51, Omnivorous: p > 0.05, t = -2.84, df = 98.67). This comparison could indicate the sun-grown plots in San Luis Valley, Costa Rica to be a more productive system, whereas shade-grown plots are dominated by two species affecting overall diversity.


Se estudio tres fincas de café para determinar la diferencia de la diversidad gremial de alimentación aviar entre las parcelas cultivadas al sol y en la sombra en el valle de San Luis, Monteverde, Costa Rica.


Birds--Food, Coffee plantations, Birds--Variation, CIEE Summer 2006

Palabras claves

Aves--Alimento, Plantaciones de café, Aves--Variación, CIEE Verano 2006


12 pages

Geographic Location

San Luis (Puntarenas, Costa Rica)

Holding Location

Monteverde Institute


English; Spanish

Media Type



Digital Only





Avian feeding guild diversity in sun-grown and shade-grown coffee farms in San Luis Valley, Monteverde, Costa Rica, 2006



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