skip to main content
Idioma:

Flood pulse influence on phytoplankton communities of the south Pantanal floodplain, Brazil

DE OLIVEIRA, M. D ; FERNANDES CALHEIROS, D

Hydrobiologia, 2000-06, Vol.427 (1-3), p.101-112 [Periódico revisado por pares]

Dordrecht: Springer

Texto completo disponível

Citações Citado por
  • Título:
    Flood pulse influence on phytoplankton communities of the south Pantanal floodplain, Brazil
  • Autor: DE OLIVEIRA, M. D ; FERNANDES CALHEIROS, D
  • Assuntos: Animal and plant ecology ; Animal, plant and microbial ecology ; Biological and medical sciences ; Fresh water ecosystems ; Freshwater ; Fundamental and applied biological sciences. Psychology ; Plankton ; Population density ; Synecology
  • É parte de: Hydrobiologia, 2000-06, Vol.427 (1-3), p.101-112
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: Four sites situated on the Pantanal floodplain (Paraguay River and floodplain) were sampled throughout the annual cycle, mainly during the rising water period, with the aim of evaluating the effects of the flood pulse on the composition and population densities of the phytoplanktonic communities. Comprehensive water chemistry data were collected. Eighty-two taxa were found, numerically dominated by Chlorophyceae (23 taxa). Cryptophyceae (principally Cryptomonas brasiliensis) occurred in all samples, and were responsible for 47-58% of the phytoplankton abundance in the studied area. Highest phytoplanktonic population density was at the rising water period, when the limnological changes are most marked as the river water first enters into contact with the floodplain. During this period, when intense decomposition occurs, the Cryptophyceae decreased and the Euglenophyceae increased, except at site 1 (Castelo Lake), where this group were more stable during the year, representing 35-56% of the phytoplankton. In the falling water period (September and October), the phytoplankton was also represented by Bacillariophyceae and Cyanophyceae. In the Pantanal, the great abundance and sometimes dominance of Cryptophyceae, may be due largely to adverse conditions for the development of other groups; the former are adapted to low availability of dissolved nutrients, and high water transparency, such conditions prevailing during the high water period.[PUBLICATION ABSTRACT]
  • Editor: Dordrecht: Springer
  • Idioma: Inglês
Links
Voltar para lista de resultados
Ir para página anteriorAnterior Resultado  3 AvançarIr para próxima página

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.