Location of Repository

Poaceae communities in the savannas of the Amazon Estuary in Brazil

By Antônio Elielson Sousa Rocha and Izildinha Souza Miranda

Abstract

We sought to identify the major environmental factors that affect the diversity and distribution of Poaceae in the savannas of the Amazon Estuary. The study was conducted across seven areas of savanna in the Amazon Estuary, within which 160 subplots of 1 m² each were established within four 10 × 100 m plots. Soil samples were collected at a depth of 0-20 cm. A total of 24 Poaceae species were recorded. Only two were common to all of the areas studied (Axonopus aureus P. Beauv. and Anthaenantia lanata (Kunth) Benth). The edaphic factors that most influenced the Poaceae in the savannas studied were organic matter, coarse sand, and silt contents. Conversely, rainfall had no effect. The floristic and structural characteristics of the savannas studied suggest that Poaceae communities exhibit low diversity and a peculiar distribution pattern in which a group of species predominate in a given stretch, creating a homogeneous physiognomy. Our findings suggest that the structure of these communities is related to a gradient of soil texture, the percentage of Axonopus and Trachypogon coverage increasing and decreasing, respectively, along that gradient. These data can contribute to the understanding of plant-soil interactions in this environment, promoting strategies for conservation, management, and revegetation

Topics: Amazon, grasses, Panicoideae, plant-soil interactions, Poaceae, Botany, QK1-989
Publisher: Sociedade Botânica do Brasil
Year: 2014
DOI identifier: 10.1590/0102-33062014abb2812
OAI identifier: oai:doaj.org/article:dfd80d1dcc974cd39247a352cebc0b48
Journal:
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • https://doaj.org/toc/1677-941X (external link)
  • http://www.scielo.br/scielo.ph... (external link)
  • https://doaj.org/article/dfd80... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.