Banca de QUALIFICAÇÃO: BRUNA DOS SANTOS FRANÇA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : BRUNA DOS SANTOS FRANÇA
DATA : 04/09/2021
HORA: 14:00
LOCAL: Ensino Remoto Emergêncial
TÍTULO:

STRUCTURE AND DYNAMICS OF PERIPHETIC ALGAE INMATO-GROSSENSE PANTANAL: BIOINDICATOR POTENTIALENVIRONMENTAL CONDITIONS

PALAVRAS-CHAVES:

Periphyton, Aquatic Macrophytes, Flood Plain,Methylation, Functional diversity.

PÁGINAS: 73
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

Ecological studies relating to periphyton, particularly in ecosystems Brazilian tropical waters are important tools for knowledge of biotic integrity and assist in the development of diagnoses of causes of environmental problems, being used for example as an indicator of water quality and its trophic state. This work aimed to analyze the structure and dynamics of periphytic algae at different scales temporal and spatial in Pantanal, Brazil. The periphytic algae community was evaluated on natural substrates (aquatic macrophytes) in a flood area tropical, specifically in the Taiamã Ecological Station, which is located in the Upper Paraguay River Basin, Pantanal Mato Grosso. In the first approach, the dynamics of taxonomic and functional diversity of diatoms from environmental filters and the contribution of diversity functional in tropical wetland. We found a significant variation between functional traits of communities in different hydrological periods (flood, ebb, drought and flood) and a replacement of species between years (taxonomic diversity), without the community losing its characteristic functional in each phase of the flood pulse, so we indicate the importance of determination of functional traits in floodplains. On Monday approach, the potential for mercury (Hg) methylation in the radicial periphyton of three species of aquatic macrophytes: Paspalun repens P.J. Bergious, Salvinia auriculata Aubl., Eichhornia crassipes (Mart) Solms in relation to the trophic index of the peripheral community in a flood area tropical. The primary productions of methylmercury in the periphyton associated with roots of the macrophytes under study varied between species, in addition to verified a decrease in the primary production of methylmercury as the increase in the trophic index, which indicates the influence of primary producers in the periphyton on mercury methylation rates in macrophyte rhizomes. We conclude that the results of this study contribute to data formation about the periphytic community and its ecological interactions, which can serve as references for interventions aimed at managing the Pantanal system, as in the use of its water resources, as the dynamics of the community are regulated by environmental conditions and your knowledge can help in assessment of the quality of aquatic ecosystems.

MEMBROS DA BANCA:
Externo à Instituição - CLAUDINEIA LIZIERI DOS SANTOS - UFV
Interno - 118188001 - ERNANDES SOBREIRA OLIVEIRA JUNIOR
Externo à Instituição - SIMONI MARIA LOVERDE OLIVEIRA - UFR
Presidente - 001.165.931-99 - WILKINSON LOPES LAZARO - UFRJ