Ecological distribution of terrestrial orchids in a south Brazilian Atlantic region
2009; Wiley; Volume: 28; Issue: 1 Linguagem: Inglês
10.1111/j.1756-1051.2009.00500.x
ISSN1756-1051
AutoresFernando Souza Rocha, Jorge Luiz Waechter,
Tópico(s)Plant Diversity and Evolution
ResumoNordic Journal of BotanyVolume 28, Issue 1 p. 112-118 Ecological distribution of terrestrial orchids in a south Brazilian Atlantic region Fernando Souza Rocha, Fernando Souza RochaSearch for more papers by this authorJorge Luiz Waechter, Jorge Luiz WaechterSearch for more papers by this author Fernando Souza Rocha, Fernando Souza RochaSearch for more papers by this authorJorge Luiz Waechter, Jorge Luiz WaechterSearch for more papers by this author First published: 01 February 2010 https://doi.org/10.1111/j.1756-1051.2009.00500.xCitations: 10 F. S. Rocha ([email protected]), Programa de Pós-Graduação em Botânica, Univ. Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, BR–91.501-970, Porto Alegre, RS, Brasil. – J. L. Waechter, Depto de Botânica, Univ. Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, BR–91.501-970, Porto Alegre, RS, Brasil. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Terrestrial orchids comprise a taxonomically and ecologically varied group, ranging from tropical to subpolar regions and from wet marshy to dry sand-dune environments. An ecological survey of these plants was performed in a natural region of Rio Grande do Sul, south Brazil, namely the northern coastal plain, between the abrupt slopes of the Serra Geral and the coastal line of the Atlantic Ocean (29°01′S to 30°00′S, 49°43′W to 50°16′W). The study area presents a humid subtropical climate of the Cfa type. Mean annual temperature and precipitation range from 17.5 to 20.0°C and from 1200 to 1700 mm, respectively. The occurrence of indigenous terrestrial orchid species was recorded for six major habitats or vegetation types: bogs and marshes, peat forests, rain forests, dune forests, Butia-palm stands and coastal sand-dunes. The ecological range was defined for 39 species belonging to 23 genera, based on literature, herbarium revisions and extensive collecting along the studied area. Species richness ranged from nine species, in both coastal dunes and palm-groves, to 17 species in peat forests. A negative correlation was observed between species richness and ecological range, showing a general tendency for terrestrial orchids to be confined to one or a few habitats. 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