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Forest Soil
Microbial Biomass
National Park
Organic Matter
Penetration Resistance
Secondary Forest
Soil Quality
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VARIABLES FÍSICAS, QUÍMICAS Y BIOLÓGICAS DEL SUELO SOBRE LAS POBLACIONES DE COLÉMBOLOS EN COSTA RICA1
VARIABLES FÍSICAS, QUÍMICAS Y BIOLÓGICAS DEL SUELO SOBRE LAS POBLACIONES DE COLÉMBOLOS EN COSTA RICA1,Cesar Guillen,Felipe Soto-Adames,Monika Springer
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VARIABLES FÍSICAS, QUÍMICAS Y BIOLÓGICAS DEL SUELO SOBRE LAS POBLACIONES DE COLÉMBOLOS EN COSTA RICA1
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Cesar Guillen
,
Felipe Soto-Adames
,
Monika Springer
Se ha discutido que las variables físicas, químicas y biológicas del suelo influyen sobre las poblaciones de colémbolos; sin embargo, la información acerca de la interacción de estas variables, en conjunto, con relación a la diversi- dad y abundancia de colémbolos, es escasa. En el presente estudio se determinó la relación entre estas variables y la diversidad y abundancia de colémbolos en los suelos de un bosque primario, un bosque secundario y un cafetal en el Parque Nacional Tapantí. El bosque primario presentó los contenidos más altos de materia orgánica y biomasa microbiana, contrario a lo sucedido con la resistencia a la penetración y el pH. Los resultados mostraron una clara asociación entre estas variables y algunas especies de colémbolos, lo cual indica que los cambios en la estructura de las comunidades de colémbolos, por efecto de los cambios en las variables físicas, químicas y biológicas del suelo, pueden ser utilizados como un bioindicador de calidad del suelo y de manejo de los ecosistemas. ABSTRACT Effect of physical, chemical and biological variables on collembolan population in three ecosystems of Costa Rica. It has been thought that physical, chemical and biological variables influence collembolan populations, although there is little documentation on the interaction of these variables with collembolan diversity and abundance. In the present study the relation between these variables and the diversity and abundance of soil collembolans was determined in 3 ecosystems in Tapantí National Park: a primary forest; a secondary forest; and a coffee plantation. Primary forest soils contained the highest
organic matter
and microbial biomass, in contrast to the pattern in
penetration resistance
and pH. The results showed a clear association between these variables and some collembolan species, which indicates that changes in the structure of collembolan communities -a product of physical, chemical and biological variables- can be used as bioindicators of
soil quality
and management of ecosystems.
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