Título:	Biochar-induced shifts in fungal community structure and their association with soil physical properties in degraded soil from the Brazilian semiarid.
Autoria:	SANTOS, J. M. R. dos PEREIRA, A. P. de A. GARCIA, K. G. V. NASCIMENTO, I. V. do BARBOSA, F. L. A. MONIZ, T. da C. D. HENRIQUE, G. da S. ALMEIDA, M. de S. MELO, V. M. M. COSTA, M. C. G. SOUSA, H. H. de F. ARTUR, A. G. SILVA, C. de F. B. da FERREIRA, O. P. SOUZA FILHO, A. G. de MEDEIROS, E. V. de ARAUJO, A. S. F. COSTA, R. S. da MOTA, J. C. A.
Afiliação:	JOÃO MARCOS RODRIGUES DOS SANTOS, UNIVERSIDADE FEDERAL DO CEARÁ; ARTHUR PRUDÊNCIO DE ARAUJO PEREIRA, UNIVERSIDADE FEDERAL DO CEARÁ; KAIO GRÁCULO VIEIRA GARCIA, UNIVERSIDADE FEDERAL DO CEARÁ; ÍCARO VASCONCELOS DO NASCIMENTO, UNIVERSIDADE FEDERAL DO CEARÁ; FRANCISCO LUAN ALMEIDA BARBOSA, UNIVERSIDADE FEDERAL DO CEARÁ; TIAGO DA COSTA DANTAS MONIZ, UNIVERSIDADE FEDERAL DO CEARÁ; GILVANETE DA SILVA HENRIQUE, UNIVERSIDADE FEDERAL DO CEARÁ; MURILO DE SOUSA ALMEIDA, UNIVERSIDADE FEDERAL DO CEARÁ; VANIA MARIA MACIEL MELO, UNIVERSIDADE FEDERAL DO CEARÁ; MIRIAN CRISTINA GOMES COSTA, UNIVERSIDADE FEDERAL DO CEARÁ; HELON HÉBANO DE FREITAS SOUSA, UNIVERSIDADE FEDERAL DO CEARÁ; ADRIANA GUIRADO ARTUR, UNIVERSIDADE FEDERAL DO CEARÁ; CHRISTIANA DE FATIMA BRUCE DA SILVA, CNPAT; ODAIR PASTOR FERREIRA, UNIVERSIDADE ESTADUAL DE LONDRINA; ANTÔNIO GOMES DE SOUZA FILHO, UNIVERSIDADE FEDERAL DO CEARÁ; ERIKA VALENTE DE MEDEIROS, UNIVERSIDADE FEDERAL DO AGRESTE DE PERNAMBUCO; ADEMIR SERGIO FERREIRA ARAUJO, UNIVERSIDADE FEDERAL DO PIAUÍ; RAFAEL SANTIAGO DA COSTA, COMPANHIA DE ÁGUA E ESGOTO DO CEARÁ; JAEDSON CLÁUDIO ANUNCIATO MOTA, UNIVERSIDADE FEDERAL DO CEARÁ.
Ano de publicação:	2026
Referência:	Land Degradation & Development, early view, 2026.
Conteúdo:	Soil degradation compromises ecosystem functioning. Biochar, a carbon-rich amendment, has gained attention as a promising strategy to enhance soil structure and restore microbial balance. This study investigated the effects of two biochars, cashew bagasse biochar (CBB) and a co-pyrolyzed biochar produced from sewage sludge and cashew pruning residues (SPB), on the physical properties and the fungal community structure in a severely degraded semiarid soil. A greenhouse experiment was conducted with four biochar application rates (5, 10, 20, and 40 Mg ha−1) and a control. The fungal community was characterized using 18S rRNA gene sequencing and evaluated through diversity metrics, correlation analyses, and co-occurrence network modeling. CBB preserved the dominance of Ascomycota and promoted gradual diversification, whereas SPB induced more pronounced taxonomic shifts, increasing the relative abundance of Mucoromycota and Basidiomycota. Fungal α-diversity and network complexity peaked at 20 Mg ha−1, suggesting that intermediate dosages enhanced habitat heterogeneity and nutrient availability. At higher doses, both indices declined, likely due to environmental stress or nutrient overload. Overall, biochar application shaped fungal community composition and showed selective links with soil physical attributes, with CBB increasing macroporosity and contributing to shifts in aggregate-size distribution. In contrast, SPB exerted stronger chemical influences, notably elevating soil Zn, thereby creating a trace-metal gradient that filtered fungal taxa. Correlation analyses further revealed that key fungal groups responded strongly to soil structural domains, particularly pore-size distribution and aggregate fractions, highlighting that each biochar operates through distinct mechanistic pathways that modulate both physical habitat and fungal ecological assembly.
Thesagro:	Deterioração do Solo Biologia do Solo Fungo Biodiversidade Desertificação
NAL Thesaurus:	Biochar Soil fungi Soil physical properties Soil degradation Semiarid zones Soil restoration
Palavras-chave:	Biochar de bagaço de caju Biochar de lodo de esgoto e resíduos de poda de cajueiro Comunidade fúngica do solo Estrutura da comunidade fúngica Diversidade fúngica do solo Resposta à dose de biochar Taxa de aplicação de biochar Redes de coocorrência fúngica Especialização de nicho fúngico Macroporosidade do solo Distribuição do tamanho dos agregados do solo Reestruturação de microhabitats do solo Gradiente de zinco no solo Solo degradado do Semiárido brasileiro Sequenciamento do gene 18S rRNA Cashew bagasse biochar Sewage sludge–cashew pruning residue biochar Soil fungal community Fungal community structure Soil fungal diversity Biochar dose response Biochar application rate Fungal co-occurrence networks Fungal niche specialization Soil macroporosity Soil aggregate-size distribution Soil microhabitat restructuring Soil zinc gradient Degraded soil from the Brazilian semiarid 18S rRNA gene sequencing
ISSN:	1099-145X
Digital Object Identifier:	https://doi.org/10.1002/ldr.70516
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPAT)