Data/hora: 14/06/2024 02:57:28

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 24/03/2021
Data da última atualização: | 24/03/2021
Autoria: | FERREIRA, T.; HANSEL, F. A.; MAIA, C. M. B. F.; GUIOTOKU, M.; CUNHA, L.; BROWN, G. G.
Afiliação: | TALITA FERREIRA, UFPR; FABRICIO AUGUSTO HANSEL, CNPF; CLAUDIA MARIA BRANCO F. MAIA, Pesquisadora aposentada da Embrapa Florestas; MARCELA GUIOTOKU, CNPF; LUÍS CUNHA, Universidade de Coimbra; GEORGE GARDNER BROWN, CNPF.
Título: | Earthworm-biochar interactions: A laboratory trial using Pontoscolex corethrurus.
Ano de publicação: | 2021
Fonte/Imprenta: | Science of the Total Environment, v. 777, 146147, July 2021. 12 p.
DOI: | https://doi.org/10.1016/j.scitotenv.2021.146147
Idioma: | Inglês
Conteúdo: | Biochar application can improve soil quality, but at high rates may cause negative effects on soil organisms such as earthworms. Conversely, as ecosystemengineers and catalysts of microbial activity, earthworms can also affect soil quality and interact with biochar, though little is knownconcerning endogeic earthworm species interactions with biochar. Hence, a standard ecotoxicological laboratory trial was undertaken to assess the impact of Brazilnut husk biochar application (0, 2.5, 5 and 10% w/w) on the endogeic cosmopolitan species Pontoscolex corethrurus, and the effects of bioturbation and gut passage on biochar chemical characteristics (assessed using pyrolysis coupled with gas chromatography and mass spectrometry) and morphology (evaluated using scanning electron microscopy). Biochar addition up to 10%w/whad no negative effects on P. corethrurus, and ingested biochar particles showed signs of physical degradation and bacterial colonization. Nine pyrolysis-produced chemical biomarkers (phenolic and aromatic compounds)were detected that can be used as indicators of biochar presence in soils and earthworm castings. Earthworm casts showed distinct macromolecular chemical signatures compared with uningested artificial soil with and without biochar. Earthworm bioturbation and biochar ingestion may have important effects on functionalization and biochar chemical and physical properties that should be considered in field applications, especially where endogeic biochar-consuming species are present.
Palavras-Chave: | Biochar morphology; Biomarcador químico; Caracterização; Cast properties; Chemical biomarkers; Ecotoxicologia; Morfologia do biochar; Organic matter characterization.
Thesaurus Nal: | Ecotoxicology.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (57640-1) - UPC - AP - DD -  -  -  - DIS