De resíduo a recurso: uma estratégia para valorizar a biomassa da invasora acacia longifolia
DOI:
https://doi.org/10.14195/1647-7723_33-1_5Palavras-chave:
Regeneração do ecossistema, solo, comunidade microbianasResumo
Estratégias mais sustentáveis para a recuperação pós-fogo são essenciais, garantindo a conservação da biodiversidade e a resiliência dos ecossistemas. Portugal é um país frequentemente afetado pelos incêndios e com vastas áreas ocupadas por Acacia longifolia, uma espécie invasora muito agressiva, que coloniza os ecossistemas nativos, comprometendo a sua funcionalidade e biodiversidade. Esta colonização resulta numa abundante biomassa, que pode ser utilizada para a produção de um composto de resíduos verdes (GWC). O efeito da incorporação de GWC no crescimento de plantas nativas (Arbutus unedo, Pinus pinea e Quercus suber) e nas propriedades do solo (físico-químicas e microbianas), foi estudado numa área ardida no sul de Portugal. O GWC permitiu um maior crescimento vegetal devido ao aumento da humidade do solo, do teor de matéria orgânica e da disponibilidade de nutrientes. As mudanças na composição microbiana sugerem benefícios funcionais para o estabelecimento das plantas e demonstram uma assinatura característica do microbioma da acácia. Este estudo destaca o benefício de incorporar composto de A. longifolia em solos degradados, acelerando a recuperação do ecossistema após o fogo.
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