Euglenoid blooms in the floodplain wetlands of Barak Valley, Assam, North eastern India.
J Environ Biol
;
2004 Jul; 25(3): 369-73
Artigo
em Inglês
| IMSEAR
| ID: sea-113616
ABSTRACT
Red blooms of Euglena sp. in the floodplain wetland ecosystems of Barak Valley, Assam, India, were found to be induced by high concentrations of NH3-N, NO3, Fe, Mg and to some extent, PO4, Cu and Zn in their water. The trace elements were rapidly accumulated by the bloom organisms to high levels, whereby their concentrations in the water declined, leading to a collapse of the bloom, which tended to reappear as decomposition again led to the release of the nutrients. The bloom also harboured fairly high density of certain other algae and zooplankton, thereby acting as a sub-system within the wetland ecosystem. The bloom is non-toxic and is exploited as a fish food by the fish-farmers who artificially induce a bloom for augmenting the growth of surface-feeding species of fishes.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Fosfatos
/
Fitoplâncton
/
Oligoelementos
/
Poluentes da Água
/
Zooplâncton
/
Densidade Demográfica
/
Ecossistema
/
Meio Ambiente
/
Euglena
/
Eucariotos
País/Região como assunto:
Ásia
Idioma:
Inglês
Revista:
J Environ Biol
Ano de publicação:
2004
Tipo de documento:
Artigo
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