Penumbral rock communities in campo rupestre sites in Brazil

A syntaxonomic study of penumbral (open-shade) communities in small rock caves in five campo rupestre sites in Minas Gerais, Brazil, was carried out according to the Braun-Blanquet method. On the basis of 41 relevés, the following new syntaxa were described: the associations Doryopterido ornithopodi...

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Bibliographic Details
Published in:Journal of vegetation science 1993-06, Vol.4 (3), p.357-366
Main Authors: Alves, R.J.V., Kolbek, J.
Format: Article
Language:English
Subjects:
Anemia
Biological taxonomies
Caves
Flora
Open shade environment
Outcrops
Plants
Quartzite
Saxicolous vegetation
Seedlings
Shrubs
Synecology
Syntaxonomy
Vegetation
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Summary:A syntaxonomic study of penumbral (open-shade) communities in small rock caves in five campo rupestre sites in Minas Gerais, Brazil, was carried out according to the Braun-Blanquet method. On the basis of 41 relevés, the following new syntaxa were described: the associations Doryopterido ornithopodis-Eriocauletum cipoensis, Coccocypselo erythrocephali-Anemietum oblongifoliae in the alliance Coccocypselo erythrocephali-Eriocaulion cipoensis, and the Trichomano pilosi-Anemietum elegantis in the alliance Trichomano pilosi-Anemion oblongifoliae, both order Coccocypselo erythrocephali-Anemietalia elegantis and class Coccocypselo erythrocephali-Anemietea elegantis. Additional synecological observations and measurements of environmental factors were correlated to the zonation and distribution of plant species within the caves. Relevant literature on South American penumbral plant communities is virtually non-existent and restricted to floristic data and usually superficial habitat descriptions.
ISSN:1100-9233
1654-1103
DOI:10.2307/3235594