The specialized white-sand flora of the Uatumã Sustainable Development Reserve, central Amazon, Brazil

By

Demarchi, Layon Oreste
Klein, Viviane Pagnussat
Aguiar, Daniel Praia Portela
Marinho, Lucas
Ferreira, Maria Julia
Lopes, Aline
Da Cruz, Jefferson
Quaresma, Adriano Costa
Schöngart, Jochen
Wittmann, Florian
Piedade, Maria Teresa Fernandez

Type

Article

Date of Publication

2022-2-17

Original Publication

Check list : journal of species lists and distribution

Volume

18

Series / Issue

Issue: 1

Pages

187--217

Subjects

Amazonian flora , Biodiversity , campinarana , endemic flora , floristic , oligotrophic environment , Wetland conservation

Contributed by

Pensoft Publishers

Language

English

Published by

[São Paulo, Brazil] Luís Felipe Toledo 2005-

Identifiers

DOI: https://doi.org/10.15560/18.1.187

 

Abstract

The consensus is that Amazonian white-sand ecosystems (campinaranas) shelter several endemic plant species. However, recent studies have shown that most species are generalists, and they also occur in other Neotropical ecosystems. To investigate this issue, we analyzed the proportion of endemic/specialist species in a checklist of trees, palms, and shrubs sampled between 2014 and 2020 in campinarana patches of the Uatumã Sustainable Development Reserve (USDR), central Amazon. We also provide a description of phytophysiognomies, habitats, distribution, and phenology. We found 167 species belonging to 117 genera and 50 families. Fabaceae was the most representative (21 spp.), followed by Rubiaceae (16 spp.) and Chrysobalanaceae (10 spp.). We found that 30.5% of the species were exclusive to campinaranas, confirming that although there are many endemics, proportionally most species are generalists. The USDR has a rich flora specialized in oligotrophic habitats, which must be considered in the management and conservation strategies of these complex and fragile Amazonian ecosystems.