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| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Universidade Estadual de Maringá
2013
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| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=187129138010 |
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- Structure of planktonic ciliates community (Protist, Ciliophora) from an urban lake of southern Brazil Luiz Felipe Machado Velho Fernando Miranda Lansac-Tôha Paulo Roberto Bressan Buosi Bianca Ramos de Meira Adalgisa Fernanda Cabral Fábio Amodêo Lansac-Tôha Biología Protist density richness plankton species composition This study examined temporal and spatial (vertical) variations of composition, richness and abundance of the planktonic ciliates community in an urban and eutrophic lake, as well as identified the limnological factors involved in determining the patterns observed. To this end, samples of ciliates and measures of limnological variables were taken at different depths and hydrological periods. 35 ciliate species were identified, among which 14 species occurred in all periods and strata, being Prostomatida the most specious, followed by Gymnostomatida, Oligotrichida, Peritrichida, and Scuticociliatida. The patterns found for composition, abundance and species richness evidenced a vertical and temporal variation of these attributes. However, in general the composition and species richness have varied more along the vertical gradient than between periods, whereas for the abundance, only temporal differences could be detected. Results observed herein indicated that benthic species seem to be mainly influenced by the amount of organic matter, phosphorus and ammonia, while planktonic ones, abundant at the surface, were mainly associated with higher dissolved oxygen concentrations. In this way, seasonal and vertical variations of limnological characteristics were decisive for the patterns of occurrence and abundance of ciliate species. 2013 artículo científico 1679-9283 https://www.redalyc.org/articulo.oa?id=187129138010 en http://www.redalyc.org/revista.oa?id=1871 Acta Scientiarum. Biological Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Biological Sciences (Brasil) Num.4 Vol.35