Use este identificador para citar ou linkar para este item:
https://repositorio.inpa.gov.br/handle/1/16296
Título: | Limnological considerations about an Amazonian floodplain lake (Catalão lake - Amazonas State, Brazil) |
Título(s) alternativo(s): | Considerações limnológicas sobre um lago da planície de inundação amazônica (lago Catalão - Estado do Amazonas, Brasil) |
Autor: | Almeida, Fabiane Ferreira de Melo, Sérgio |
Palavras-chave: | Dissolved Oxygen Nitrogen Phosphorus Controlled Study Electric Conductivity Environmental Monitoring Flooding Floodplain Lake Limnetic Zone Limnology Physical Chemistry Seasonal Variation Water Temperature |
Data do documento: | 2009 |
Revista: | Acta Scientiarum - Biological Sciences |
É parte de: | Volume 31, Número 4, Pags. 387-395 |
Abstract: | The temporal and spatial variation of some limnologjcal variables in the limnetic zone of an Amazonian floodplain lake, Catalão Lake, was studied. The following parameters were measured weekly during the dry period of 2006 and the flood period of 2007: water temperature, euphoric zone, mixing zone, electrical conductivity, dissolved oxygen, water transparency and total phosphorus and nitrogen. Simple regressions were carried out to test the hypothesis of environmental homogeneity as a function of flooding. Also, diel temperature, dissolved oxygen and electric conductivity profiles were studied during the dry period and in the flood period. The results show the importance of the flood pulse in the variation of the physical and chemical variables in the lake. The PCA indicated that, during the dry period, the physical and chemical variables had a stronger spatial pattern of distribution, while during the flood period, the pattern was temporal. The regressions indicated the homogeneity of the environment as a function of flooding. The results of the diel cycles seem to indicate that Catalão lake has a polimictic and oligomictic behavior during the dry and flood periods, respectively. |
DOI: | 10.4025/actascibiolsci.v31i4.4641 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Considerações.pdf | 1,75 MB | Adobe PDF | Visualizar/Abrir |
Este item está licenciada sob uma Licença Creative Commons