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| Almeida, Stéfano Zorzal de; Instituto de Botânica; Fernandes, Valéria de Oliveira; Universidade Federal do Espírito Santo. |
| This study aimed at evaluating the effects of the intensive fish-farming and the domestic wastewater on the structure of the phycoperiphyton community. Three experimental supports containing artificial substrate were assembled in two sampling sites: IF – region with intensive fish-farming and DW – near the domestic wastewater discharge. Samplings were carried out after the 21st, 26th and 31st day of colonization. The abiotic variables evaluated were: transparency, electrical conductivity, pH, turbidity, total suspended solids, alkalinity, dissolved oxygen, water temperature and nutrients. Phycoperiphyton was examined with regard to density, richness, abundance, dominance, diversity and eveness. Nutrients (total nitrogen, nitrate, ammonia nitrogen,... |
| Tipo: Estudos exploratórios |
Palavras-chave: 2.05.00.00-9; Bacillariophyceae; Late successional stage; Nutrients; Phycoperiphyton; Artificial substrate 2.05.00.00-9. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17094 |
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| Felisberto, Sirlene Aparecida; Universidade Federal de Goiás; Rodrigues, Liliana; Universidade Estadual de Maringá. |
| Periphytic algal community in artificial and natural substratum in a tributary of the Rosana reservoir (Corvo Stream, Paraná State, Brazil). This study evaluated the heterogeneity in periphytic algal community, under the influence of time colonization on artificial substratum. We also examined which abiotic variables most influenced the community in natural and artificial substratum. Egeria najas Planchon was used as natural substratum, and a plastic plant, as artificial. This experiment was carried out in a lateral arm from Rosana Reservoir, formed by Corvo Stream (Paranapanema river basin), in the period from November 21st to December 12nd, 2003, characterized as a warm and rainy period. Changes in species composition were assessed using the similarity... |
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Palavras-chave: 2.00.00.00-6; 2.05.02.00-1 Ecology; Colonization; Phycoperiphyton; Zygnemaphyceae; Similarity Ecologia Ecology; Colonization; Phycoperiphyton; Zygnemaphyceae; Similarity. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4627 |
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