Composição e diversidade de algas perifíticas em veredas sob diferentes impactos antrópicos (Goiás, Brasil)
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Data
2013-12
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Resumo
Given the high rate of degradation
and the importance of phycoperiphyton in aquatic ecosystems, the present study aimed to
test the hypothesis that palm swamps with intermediate levels of nutrients have a higher
diversity of periphytic algae than others. Thus, we assessed the diversity of periphytic algae
communities from 23 palm swamps in Goiás State, among six conserved, nine impacted
from agriculture areas, and eight in the urban area. All environments had an acidic pH and
high silica concentrations. Higher values of richness and diversity were recorded in impacted
palm swamps. This study demonstrated that possibly the increase in light incidence on the
water body caused by the reduction of riparian vegetation and an increased of allochthonous
nutrient availability in impacted palm swamps provided these results. It was noted the
importance of pH and silica in all palm swamps for epiphytic algae community composition,
with greatest species richness of zignemaphyceae and diatoms.
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Palavras-chave
Áreas úmidas, Cerrado, Famílias de diversidade, Riqueza de espécies, Diversity family, Species richness, Wetland
Citação
DUNCK, Bárbara; NOGUEIRA, Ina de Souza; FELISBERTO, Sirlene Aparecida. Composição e diversidade de algas perifíticas em veredas sob diferentes impactos antrópicos (Goiás, Brasil). Iheringia, Série Botânica, Porto Alegre, v. 68, n. 2, p. 237-248, dez. 2013.