Effect of Grazing on the Plant Community of a Southern Brazilian Swamp
AUTOR(ES)
Spellmeier, Jaqueline
FONTE
Floresta Ambient.
DATA DE PUBLICAÇÃO
01/07/2019
RESUMO
ABSTRACT Swamps have high biological diversity and are the largest producers of biomass. However, such ecosystems are threatened by human activities. This study analyzes the plant community structure of two swamp sites, with and without grazing. A total of 200 sample units with 0.25 m2 were distributed every 13 m to determine diversity, the Importance Value Index (IVI), and coverage. Fifty species and 18 families were recorded. Luziola peruviana Juss. ex. JF Gmel had the highest IVI, accounting for 62.57% of the relative coverage in cattle-influenced sites. In the portions without cattle, Commelina diffusa Burm.f. had the highest IVI (24.33). The Shannon and Pielou indexes were 2.18 nats.ind.–1 and 0.56, respectively, decreasing to 1.62 nats.ind.–1 and 0.47 in grazing sites. There was less richness in the cattle grazing area, with a single species accounting for a high percentage of coverage, indicating the possible role of grazing on the plant community structure.
Documentos Relacionados
- Epiphytic ferns in swamp forest remnants of the coastal plain of southern Brazil: latitudinal effects on the plant community
- Floristic and vegetation structure of a grassland plant community on shallow basalt in southern Brazil
- Weaving relatives: elopement and kinship in a southern Brazilian community
- Influence of Macrophyte Decomposition on Growth Rate and Community Structure of Okefenokee Swamp Bacterioplankton †
- Impact of Protozoan Grazing on Bacterial Community Structure in Soil Microcosms