Palynomorphs in Holocene sediments from a paleolagoon in the coastal plain of extreme southern Brazil

Ebráilon Masetto, Maria Luisa Lorscheitter
2014 Acta Botânica Brasílica  
This paper presents the results of a qualitative palynological analysis of a 140 cm-thick section of Holocene sediments from a paleolagoon, representing the last 2600 years, taken from an outcrop at Hermenegildo Beach (33°42'S; 53°18'W), located in the municipality of Santa Vitória do Palmar, in the state of Rio Grande do Sul, Brazil. Samples were treated with hydrochloric acid, hydrofluoric acid and potassium hydroxide, after which they were subjected to acetolysis and mounted on
more » ... d slides for light microscopy analysis. Among the 48 palynomorphs identified were 25 fungi, eight algae, three bryophytes, and 12 pteridophytes. Brief descriptions and illustrations of each palynomorph are presented, together with ecological data from the organism of origin when possible. Our findings will serve as reference material for paleoenvironmental studies in the coastal plain of southern Brazil. Acta bot. bras. 28(2): 165-175. 2014.
doi:10.1590/s0102-33062014000200003 fatcat:mwuku7u7fvbzlgxracpugov3rm