Circumscribing campo rupestre – megadiverse Brazilian rocky montane savanas

Brazilian Journal of Biology

Rjv. Alves¹  Ng. Silva¹  Ja. Oliveira¹  D. Medeiros¹ 

关键词: rocky savana;    montane savana;    rock-dwelling vegetation;    biogeographic elements;    vegetation classification;    Neotropics;    savana pedregosa;    savana montana;    vegetação sobre rocha;    elementos biogeográficos;    classificação da vegetação;    Neotrópico;   

DOI  :  10.1590/1519-6984.23212

来源: SciELO

【 摘 要 】

Currently campo rupestre (CR) is a name accepted and used internationally by botanists, zoologists, and other naturalists, usually applied to a very specific ecosystem, despite the lack of a consensual published circumscription. We present a tentative geographic circumscription of the term, combining data on climate, geology, geomorphology, soil, flora, fauna and vegetation. The circumscription of campo rupestre proposed herein is based on the following premises: (1) the classification of vegetation is not an exact science, and it is difficult to attain a high degree of consensus to the circumscription of vegetation names; (2) despite this, vegetation classification is useful for conservation and management. It is thus desirable to circumscribe vegetation types with the greatest attainable precision; (3) there is a need to preserve all montane and rocky vegetation types, regardless of classification, biome, etc; (4) the CRs are formed by a complex mosaic of vegetation types including rock-dwelling, psammophilous, aquatic, epiphytic, and penumbral plant communities. Campos rupestres stricto sensu are a Neotropical, azonal vegetation complex endemic to Brazil, forming a mosaic of rocky mountaintop “archipelagos” inserted within a matrix of zonal vegetation, mainly in the Cerrado and Caatinga provinces of the Brazilian Shield (southeastern, northeastern and central-western regions), occurring mainly above 900 m asl. up to altitudes exceeding 2000 m, having measured annual precipitation between 800 and 1500 mm, and an arid season of two to five months.

【 授权许可】

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