White-sand vegetation of Brazilian Amazonia ( caatinga).
The described vegetation type, 'Amazon caatinga', is distinguished by its white-sand soil, scleromorphic physiognomy, and unusual floristic composition. The scleromorphic physiognomy of the caatinga indicates a lack of nutrients and/or periodic water deficiencies in the soil. Extreme edaphic conditi...
| Autor principal: | Anderson, Anthony B. |
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| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Biotropica
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/19725 |
| Resumo: |
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The described vegetation type, 'Amazon caatinga', is distinguished by its white-sand soil, scleromorphic physiognomy, and unusual floristic composition. The scleromorphic physiognomy of the caatinga indicates a lack of nutrients and/or periodic water deficiencies in the soil. Extreme edaphic conditions and the insularity of these sites have probably acted as powerful selective forces, generating a biota characteristically low in diversity and high in endemism. Numerous endemics may currently face extinction due to widespread burning. Repeated fires on white-sand sites result in the effective arrest of succession.-from Author |