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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Kuczak, Christienne N. | - |
dc.contributor.author | Fernandes, Erick C.M. | - |
dc.contributor.author | Lehmann, Johannes | - |
dc.contributor.author | Rondón, Marco A. | - |
dc.contributor.author | Luizão, Flávio Jesus | - |
dc.date.accessioned | 2020-06-15T22:02:57Z | - |
dc.date.available | 2020-06-15T22:02:57Z | - |
dc.date.issued | 2006 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/18772 | - |
dc.description.abstract | We compared differences in soil phosphorus fractions between large earthworm casts (Family Glossoscolecidae) and surrounding soils, i.e., Oxisols in 10 year-old upland agroforestry system (AGR), pasture (PAS), and secondary forest (SEC) in the Central Brazilian Amazon. AGR and PAS both received low-input fertilization and SEC received no fertilization. We found that earthworm casts had higher levels of organic hydroxide P than surrounding soils, whereas fertilization increased inorganic hydroxide P. Inorganic P was increased by fertilization, and organic P was increased by earthworm gut passage and/or selection of ingested materials, which increased available P (sum of resin and bicarbonate fractions) and moderately available P (sum of hydroxide and dilute acid fractions), and P fertilizer application and land-use increased available P. The use of a modified sequential P fractionation produced fewer differences between earthworm casts and soils than were expected. We suggest the use of a condensed extraction procedure with three fractions (Available P, Moderately Available P, and Resistant P) that provide an ecologically based understanding of the P availability in soil. Earthworm casts were estimated to constitute 41.0, 38.2, and 26.0 kg ha-1 of total available P stocks (sum of resin and bicarbonate fractions) in the agroforestry system, pasture, and secondary forest, respectively. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 38, Número 3, Pags. 553-560 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Ecology | en |
dc.subject | Forestry | en |
dc.subject | Organic Compounds | en |
dc.subject | Soils | en |
dc.subject | Agroforestry | en |
dc.subject | Amazonia | en |
dc.subject | Bactris Gasipaes | en |
dc.subject | Bertholletia Excelsa | en |
dc.subject | Oxisol | en |
dc.subject | Pasture | en |
dc.subject | Secondary Forest | en |
dc.subject | Sequential Phosphorus Extraction | en |
dc.subject | Phosphorus | en |
dc.subject | Inorganic Phosphorus | en |
dc.subject | Organic Phosphorus | en |
dc.subject | Oxisol | en |
dc.subject | Rainforest | en |
dc.subject | Worm Cast | en |
dc.subject | Ecology | en |
dc.subject | Forestry | en |
dc.subject | Organic Compounds | en |
dc.subject | Phosphorus | en |
dc.subject | Bactris Gasipaes | en |
dc.subject | Bertholletia Excelsa | en |
dc.subject | Glossoscolecidae | en |
dc.subject | Pheretima Sieboldi | en |
dc.title | Inorganic and organic phosphorus pools in earthworm casts (Glossoscolecidae) and a Brazilian rainforest Oxisol | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1016/j.soilbio.2005.06.007 | - |
dc.publisher.journal | Soil Biology and Biochemistry | pt_BR |
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