Patterns of seasonal and altitudinal change in Monteverde bird communities


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Citation
Patterns of seasonal and altitudinal change in Monteverde bird communities

Material Information

Title:
Patterns of seasonal and altitudinal change in Monteverde bird communities
Translated Title:
Los patrones de cambio estacional y latitudinal en las comunidades de aves en Monteverde
Creator:
Palm, Eric
Publication Date:
Language:
Text in English

Subjects

Subjects / Keywords:
Birds--Behavior ( lcsh )
Aves--Comportamiento ( lcsh )
Climatic changes--Environmental aspects ( lcsh )
Cambios climaticos--Aspectos ambientales ( lcsh )
Costa Rica--Puntarenas--Monteverde Zone--Monteverde
Costa Rica--Puntarenas--Zona de Monteverde--Monteverde
CIEE Fall 2003
CIEE Otoño 2003
Genre:
Reports

Notes

Abstract:
Previous studies in Monteverde, Costa Rica, have shown that numerous bird species are moving upslope in response to climate change. While there are an increasing number of such studies that address climate change, most fail to incorporate seasonal climatic variation. I censused the birds in three elevational zones in the Monteverde area not only to assess these distributional shifts, but also to determine the effects of season on bird communities. Compared to Michael Fogden’s data from 1979-1992, I found a number of species that have moved into higher zones where they were previously less common or absent. However, the results showed less upslope movement than those found by Donnelly (1998), during the dry season, likely due to downslope migrations during the non-breeding season. My findings suggest that not only are birds continuing to move up in elevation, but also that the effects of global warming on such movements in birds are less pronounced during the wet season than in the dry season. Also, this study indicates that future studies of species responses to climate change must account for seasonal variation. ( ,,, )
Abstract:
Estudios anteriores en Monteverde, Costa Rica, han mostrado que muchas especies de aves están subiendo hasta elevaciones más altas debido al cambio climático. Hice un censo de las aves en tres zonas a diferentes elevaciones en Monteverde para evaluar estos cambios en distribución y para determinar los efectos de las estaciones en las comunidades de aves. En comparación con los datos de Michael Fogden de 1979- 1992, este estudio descubrió que cierto número de especies se ha movido hasta zonas más altas donde anteriormente eran menos comunes o estaban completamente ausentes. Sin embargo, los resultados mostraron menos movimiento ascendente que los que fueron encontrados por Donnelly (1998) durante la estación seca, probablemente debido a las migraciones hasta elevaciones más bajas durante la época no reproductiva. Los resultados sugieren que las aves no solamente están moviéndose hacia arriba en elevación, sino que también los efectos del calentamiento global en estos movimientos son menos pronunciados durante la estación lluviosa que durante la estación seca. También, este estudio indica que futuros estudios en la respuesta de las especies a cambios climáticos necesitan considerar la variación estacional.
Biographical:
Student affiliation: Department of Biology, The Colorado College
Acquisition:
Digitized by MVI

Record Information

Source Institution:
Monteverde Institute
Holding Location:
Monteverde Institute
Rights Management:
This item is licensed with the Creative Commons Attribution Non-Commercial No Derivative License. This license allows others to download this work and share them with others as long as they mention the author and link back to the author, but they can’t change them in any way or use them commercially.
Resource Identifier:
M39-00166 ( USFLDC DOI )
m39.166 ( USFLDC Handle )

Postcard Information

Format:
Book

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Full Text
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Palm, Eric
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Marlene
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Patterns of Seasonal and Altitudinal Change in Monteverde Bird Communities
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Digitized by MVI
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Previous studies in Monteverde, Costa Rica, have shown that numerous bird species are moving upslope in response
to climate change. While there are an increasing number of such studies that address climate change, most fail to
incorporate seasonal climatic variation. I censused the birds in three elevational zones in the Monteverde area not
only to assess these distributional shifts, but also to determine the effects of season on bird communities. Compared
to Michael Fogdens data from 1979-1992, I found a number of species that have moved into higher zones where
they were previously less common or absent. However, the results showed less upslope movement than those found
by Donnelly (1998), during the dry season, likely due to downslope migrations during the non-breeding season. My
findings suggest that not only are birds continuing to move up in elevation, but also that the effects of global
warming on such movements in birds are less pronounced during the wet season than in the dry season. Also, this
study indicates that future studies of species responses to climate change must account for seasonal variation.
Marlene
546
Text in English.
650
Birds--Behavior
Climatic changes--Environmental aspects
Costa Rica--Puntarenas--Monteverde Zone--Monteverde
4
Aves--Comportamiento
Cambios climticos--Aspectos ambientales
Costa Rica--Puntarenas--Zona de Monteverde--Monteverde
653
Tropical Ecology Fall 2003
Ecologa Tropical Otoo 2003
655
Reports
720
MVI
773
t Monteverde Institute : Tropical Ecology
856
u http://digital.lib.usf.edu/?m39.417


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