Data/hora: 06/06/2024 08:12:33

Biblioteca(s): | Embrapa Agrobiologia.
Data corrente: | 03/05/2005
Data da última atualização: | 03/05/2005
Autoria: | BADEJO, M. A.; ESPÍNDOLA, J. A. A.; GUERRA, J. G. M.; AQUINO, A. M. de; CORREIA, M. E. F.
Título: | Soil oribatid mite communities under three species of legumes in an ultisol in Brazil.
Ano de publicação: | 2002
Fonte/Imprenta: | Experimental and Applied Acarology, Dordrecht, v. 27, n. 4, p. 283-296, 2002.
Idioma: | Inglês
Conteúdo: | Oribatid mite densities in the topsoil and their activity at the soil surface were monitored under three species of perennial legume cover crops namely, Arachis pintoi, Macroptilium atropurpureum and Pueraria phaseoloides, grass (Panicum maximum) and bare plots on three occasions in 1998 and 1999 in a derived savanna zone in Brazil. Both densities and  activity at the soil surface were higher in the early but cool dry season in April 1998 than in the early wet but warm season in november 1998 and 1999. Three taxonomic groups of macropyline oribatid mites, namely Nothrus, Archegozetes and Masthermannia as well as a brachpyline taxon, Scheloribates were suggested as possible indicators of effect of legumes on soil biota because their populations increased under the legumes and/or their residues. Nothrus in particular increased in abundance more than any other taxon in the presence of residies of A. pintoi. Each legume supported a unique oribatid mite community in terms of species composition and relative abundance. The large numbers of Archegozetes trapped from all the legume and grass plots in April and November 1998 were also attributed to highly conducive conditions provided by the vegetation cover and their residues. The results suggest that the oribatid mite community of the study area was numerically stable as the peak populations of different species were not synchronized. Many taxonomic groups of pycnonotic brachypyline mites were absent. Legume cover crops, especially A. pintoi, and their residues have potential in restoring oribatid mite populations to precultivation levels.
Thesagro: | Leguminosa; Solo.
Thesaurus Nal: | legumes; soil.
Categoria do assunto: | --
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (32363-1) - UPC - SP - -- -  -  - 0022807 - DIS