Data/hora: 23/09/2024 17:38:10

Biblioteca(s): 	Embrapa Cerrados.	
Data corrente: 	16/08/2012	
Data da última atualização: 	13/08/2024	
Autoria: 	BROSSARD, M.; FREGONEZI, G. A. DE F.; GUIMARÃES, M. de F.; MEDINA, C. de C.; PASINI, A.; VILELA, L.; AYARZA, M. A.	
Afiliação: 	MICHEL BROSSARD, INSTITUT DE RECHERCHE POUR LE DÉVELOPPEMENT; GUSTAVO ADOLFO DE FREITAS FREGONEZI, UNIVERSIDADE ESTADUAL DE LONDRINA; MARIA DE FÁTIMA GUIMARÃES, UNIVERSIDADE ESTADUAL DE LONDRINA; CRISTIANE DE CONTI MEDINA, UNIVERSIDADE ESTADUAL DE LONDRINA; AMARILDO PASINI, UNIVERSIDADE ESTADUAL DE LONDRINA; LOURIVAL VILELA, CPAC; MIGUEL ANGEL AYARZA, CORPORACIÓN COLOMBIANA DE INVESTIGACIÓ AGRÍCOLA.	
Título: 	Analysis of an illustrative interaction between structural features and earthworm populations in Brazilian ferralsols.	
Ano de publicação: 	2012	
Fonte/Imprenta: 	Comptes Rendus Geoscience, v. 344, p. 41-49, 2012.	
Páginas: 	p. 41-49.	
ISSN: 	1631-0713	
Idioma: 	Inglês	
Conteúdo: 	Ferralsols are characterized by poorly-defined horizons, weak macrostructure and strong development of a fine granular structure comprising subangular micro-aggregates. In this study, the morphological and physical modifications caused by earthworm activity in a clayey ferralsol were analysed. After describing soil structures, undisturbed samples were taken for evaluating aggregates and determining clod bulk density and particle density. Soil water retention properties were measured and an inventory of soil invertebrate macrofauna was created. The structural and porous transformations were due to aggregates created by earthworm activity. Changes in bulk density can be associated with pore modifications caused by a change in the proportions of aggregate types, and a notable reduction of total porosity was measured, tending to increase soil volume with dense aggregates. Structural modifications affected the topsoil down to 0.5 m and water retention between 1 and 33 kPa, the principal water compartment of these soils.	
Palavras-Chave: 	Ciência do solo.	
Thesagro: 	Estrutura do Solo; Latossolo; Minhoca.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Cerrados (CPAC)	
Exemplares: 	CPAC - (33335-1) - UPC - AP - PP - CRI8063 -  - CRI8063 - DIS