Data/hora: 07/06/2024 14:16:51

Biblioteca(s): | Embrapa Soja.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 30/11/2012
Data da última atualização: | 31/07/2017
Autoria: | NIEMEYER, J. C.; NOGUEIRA, M. A.; CARVALHO, G. M.; COHIN-DE-PINHO, S .J.; OUTEIRO, U. S.; RODRIGUES, G. G.; SILVA, E. M. da; SOUSA, J. P.
Afiliação: | JÚLIA CARINA NIEMEYER, Universidade Federal da Bahia; MARCO ANTONIO NOGUEIRA, CNPSO; State University of Santa Cruz; Universidade Federal da Bahia; Universidade Federal da Bahia; UFPE; Universidade Federal da Bahia; University of Coimbra.
Título: | Functional and structural parameters to assess the ecological status of a metal contaminated area in the tropics.
Ano de publicação: | 2012
Fonte/Imprenta: | Ecotoxicology and Environmental Safety, v. 86, p. 188-197, 2012.
Idioma: | Inglês
Conteúdo: | Ecological parameters (soil invertebrates, microbial activity, and plant community) were assessed in a metal contaminated site in an abandoned lead smelter and non-contaminated reference sites, as part of an ecological risk assessment (ERA). Vegetation cover inside the smelter area was lower and presented a more homogenous species composition than outside. A more simpli&#64257;ed and less abundant vegetation community within the smelter area also simpli&#64257;ed the habitat conditions, which in addition to metal toxicity, impaired the soil microbial and faunal communities. A signi&#64257;cant reduction in the feeding activity was observed within the smelter area. Also a signi&#64257;cant change in community composition of surface dwelling invertebrates was observed at those sites when compared to sites outside the smelter area. Moreover, basal respiration, microbial biomass C, dehydrogenase and phosphatase activity also decreased in several of these points under the smelter area. As a result, a signi&#64257;cant impairment of organic material decomposition in the most contaminated sites was observed. Metal contamination affected the ecological status of the site, leading to a risk for ecosystem functioning and provisioning of ecosystem services like organic matter decomposition and nutrient cycling, even 17 years after the end of smelting activities. Regarding the sensitivity of the ecological parameters assessed, most were able to distinguish sites within the smelter area boundaries from those outside. However, only bait lamina (feeding activity), basal respiration and microbial biomass carbon presented high capacity to distinguish the level of soil contamination, since they were signi&#64257;cantly correlated with metal loadings, and thus are promising candidates to be integrated in the Ecological Line of Evidence of an ERA.
Thesagro: | Vegetação.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (33858-1) - UPC - AP - DD -  -  -  - DIS