MODELING THE POTENTIAL DISTRIBUTION OF MEDICINAL PLANT SPECIES OCCURRING IN THE AMAZON UNDER CLIMATE CHANGE SCENARIOS

Autores

DOI:

https://doi.org/10.31413/nat.v14i4.22135


Palavras-chave:

environmental suitability, plant genetic resources, in-situ conservation, ecological niche modeling

Resumo

Modelagem da distribuição potencial de espécies medicinais que ocorrem na Amazônia sob cenários de mudança climática

 

RESUMO: A mudança climática é uma ameaça crescente à conservação da flora medicinal amazônica, podendo alterar a distribuição geográfica das espécies e comprometer a disponibilidade de recursos fitogenéticos. Este estudo teve como objetivo modelar a distribuição potencial atual e futura, sob diferentes cenários, das espécies Carapa procera, Uncaria tomentosa, Ampelozizyphus amazonicus e Vernonia polysphaera. Registros de ocorrência de bancos de dados e de coleções científicas foram utilizados para modelar o nicho ecológico, com seis algoritmos implementados no ENMTML. As projeções futuras consideraram os modelos climáticos HadGEM3-GC31-LL, IPSL-CM6A-LR e MIROC6, sob os cenários SSP2-4.5 e SSP5-8.5, e nos períodos de 2041–2060, 2061–2080 e 2081–2100. O desempenho dos modelos variou entre as espécies e os algoritmos, com o melhor desempenho preditivo observado em GAU, MXD, RF e SVM. A adequabilidade ambiental de C. procera apresentou redução, enquanto a de U. tomentosa apresentou redução inicial, seguida de redistribuição espacial parcial. Em A. amazonicus, observou-se redução moderada, principalmente no cenário mais pessimista, enquanto V. polysphaera apresentou aumento da adequabilidade ambiental. Os resultados indicam diferenças na adequabilidade ambiental futura entre espécies e fornecem subsídios para o planejamento de estratégias de conservação in-situ e ex-situ, bem como para a identificação de áreas prioritárias para a conservação desses recursos fitogenéticos.

Palavras-chave: adequabilidade ambiental; recursos fitogenéticos; conservação in-situ; modelagem de nicho ecológico.

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2026-10-19

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Ciências Ambientais / Environmental Sciences

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MODELING THE POTENTIAL DISTRIBUTION OF MEDICINAL PLANT SPECIES OCCURRING IN THE AMAZON UNDER CLIMATE CHANGE SCENARIOS. (2026). Nativa, 14(4), e22135. https://doi.org/10.31413/nat.v14i4.22135

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