Dynamics of microalgal communities in the water-column/sediment interface of the inner shelf off Parana State, Southern Brazil
作者： Ricardo Luiz Queiroz , Frederico Pereira Brandini , Franciane Maria Pellizzari
DOI: 10.1590/S1679-87592004000300002
关键词: Hydrology 、 Cyanobacterial bloom 、 Biomass (ecology) 、 Water column 、 Continental shelf 、 Plankton 、 Sediment 、 Chlorophyll a 、 Benthic zone 、 Environmental science 、 Oceanography
摘要: The composition and biomass of the microalgal community at water-column/sediment interface on continental shelf off Parana State (Brazil) were studied every 2 months during 1999. Samples for cell identification determination chlorophyll a taken from layer discrete depths up to 4 m above sediment. Results showed mainly formed by benthic planktonic diatoms >30 µm, 30 which accounted most pigment biomass, resuspended after turbulent periods, may take advantage calm periods stay grow interface. Small more susceptible wind-induced turbulence occurring in higher densities water column just water-sediment A cyanobacterial bloom (Trichodesmiun) was observed these bottom layers spring-summer periods.
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