Ecological aspects and distribution of the species of the genus Eleocharis (CyperaceaeEleocharideae) in Paraguay in neighboring region of Argentina, Bolivia and Brazil
DOI:
https://doi.org/10.30972/bon.3519122Keywords:
Databases, ecology, soil types, wetlandsAbstract
The genus Eleocharis R. Br. is the third most diverse genus within the Cyperaceae family, one of the four major plants families in Paraguay. The aim of this study was to characterize Eleocharis species according to their habitat, differentiate the types of humid environments they inhabit, and to map their distribution in Paraguay and neighboring regions. The species database compiled from using field collections and the study of specimens deposited in different herbaria. Ecological descriptions were made in situ and extracted from herbarium specimen labels. Distribution maps were generated using R software, and the World Geodetic System 1984 (WGS84) coordinate reference system was applied. Shapefiles representing the administrative boundaries of the three countries bordering Paraguay were obtained from The Data Humanitarian Exchange website. A total of 33 species, one subspecies, and one variety were recorded in four types of habitats; aquatic rooted on sandy substrate: seven species, one subspecies, and one variety; amphibious rooted on sandy substrate: 18 species; amphibious rooted on clay substrate: seven species; and strictly aquatic: one species. Of the total number of species, four are endemic to Paraguay.
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