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Franco D, MARamírez G., G.Franco, T.[Análisis de la información disponible en la base de datos sobre localidades y evaluaciones de germoplasma en sabanas]Análisis de la información disponible en la base de datos sobre localidades y evaluaciones de germoplasma en sabanas
Doll, Jerry D.Fuentes de Piedrahíta, Cilia L.Ceballos, L.F.[Guía práctica para el control químico de las malezas en los potreros [conjunto audiotutorial]]Guía práctica para el control químico de las malezas en los potreros [conjunto audiotutorial]

Short-term changes in soil aggregation, total and particulate organic C and N were studied in cropping and pasture systems of the Brazilian savannas, also known as the Cerrados. Furthermore, the concepts of a hierarchical aggregate structure and of the interaction of soil structure with particula...


Freibauer, A.Westerhof, RAyarza, Miguel AngelSilva, J.E. daZech, W.[Short-term variation in aggregation and particulate organic matter under crops and pastures]Short-term variation in aggregation and particulate organic matter under crops and pastures
Lascano, Carlos E.Ruiz, GVelásquez R., J.E.Rozo, JJervis, M[Developing improved pasture systems for forest margins]Developing improved pasture systems for forest margins

This was especially due to the presence of a large glossoscolecid anecic species, Martiodrilus carimaguensis Jim\233nez and Moreno, which has been greatly favored by conversion of savanna to pasture. Endogeic species were dominant in the natural savanna whereas the anecic species accounted for th...


Jiménez Jaén, J.J.Moreno, AlonsoDecaëns, ThibaudLavelle, Patrick M.Fisher, Myles J.Thomas, Richard J.[Earthworms communities in native savannas and man-made pastures of the Eastern plains of Colombia]Earthworms communities in native savannas and man-made pastures of the Eastern plains of Colombia

A detailed description and drawings of the aestivation chambers of five earthworm species are given plus a complete analysis of the mechanistic processes that determine this behavioral pattern for one anecic species from Colombia. The onset of aestivation differed in adults and juveniles for two ...


Jiménez Jaén, J.J.Brown, George G.Decaëns, ThibaudFeijoo Martínez, AlexanderLavelle, Patrick M.[Differences in the timing of diapause and patterns of aestivation in tropical earthworms]Differences in the timing of diapause and patterns of aestivation in tropical earthworms

Only a small part of the spatio-temporal structures of earthworm distribution was correlated with soil properties. Small species were more abundant in patches were soil was more compact, while large species were associated with high root biomass and total C levels. The question whether earthworm ...


Decaëns, ThibaudRossi, JP[Spatio-temporal structure of an earthworm community and soil heterogeneity in a tropical pasture (Carimagua, Colombia)]Spatio-temporal structure of an earthworm community and soil heterogeneity in a tropical pasture (Carimagua, Colombia)

De acuerdo con las demográficas actuales, se prevé que la población en América tropical se duplicara en los próximos 25 años; como consecuencia, habrá mayor demanda de carne y leche, la cual podrá satisfacerse solo aumentando la producción agropecuaria. Estos factores aumentaran la presión sobre ...


Ayarza, Miguel AngelRao, Idupulapati M.Thomas, Richard J.[Reciclaje de nutrimentos en pastizales tropicales de suelos ácidos]Reciclaje de nutrimentos en pastizales tropicales de suelos ácidos

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