Algal Communities of Continental Waters

Symoens, J. J.; Kusel-Fetzmann, E.; Descy, Jean‐Pierre

doi:10.1007/978-94-009-3087-2_6

Cited by 11 publications

(8 citation statements)

References 73 publications

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“…In agreement with observations reported by many authors in relation to changes of the assemblage in response to disturbances of the aquatic environment (Cattaneo et al, 1998;Guasch et al, 1999;Gustavson and Wä ngberg, 1995;Kelly and Whiton, 1995;Lange-Bertalot, 1979;Pan et al, 2000;Rott, 1991;Sabater, 2000;Symoens et al, 1988;Ivorra, 2000), our study shows that the disturbances produced by dredging determine a decline of the sensitive species that are replaced by either tolerant or most tolerant species. These changes were particularly noticeable and statistically significant in site 1 (characterized by its lower amount of nutrients and organic matter previous to dredging), which showed an increase in the amount of nutrients and oxygen demands as a consequence of sediment removal.…”

Section: Conclusion and Discussionsupporting

confidence: 94%

Effects of dredging on benthic diatom assemblages in a lowland stream

Licursi

Gómez

2009

Journal of Environmental Management

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Section: Conclusion and Discussionsupporting

confidence: 94%

Effects of dredging on benthic diatom assemblages in a lowland stream

Licursi

Gómez

2009

Journal of Environmental Management

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“…The number of species and the diversity index varied among the sampling sites showing the lowest values in the polluted sites. According to Symoens et al (1988) the alterations that occur in communities exposed to contamination are as diverse as changes in the number of species, the number of organisms of each species and the total density of organisms. High species richness is assumed to indicate biotic integrity because many species are adapted to the conditions present in the habitat.…”

Section: Discussionmentioning

confidence: 99%

Biofilms coating Schoenoplectus californicus as indicators of water quality in the Río de la Plata Estuary (Argentina)

Bauer

Gómez

Hualde

2007

Environ Monit Assess

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Community composition, structure, biomass and tolerance to pollution of biofilms growing on Schoenoplectus californicus were assessed, together with physico-chemical parameters of the water, to evaluate their usefulness as water quality indicators along the Argentinian shore of the freshwater zone of the Río de la Plata Estuary. Monthly sampling was carried out at three sites, one of which, located in a nature reserve, was considered as the reference site while the others were affected by sewage outlets and port activity. The reference site had higher dissolved oxygen and turbidity values, the polluted sites greater conductivity, oxygen demands, phosphate, ammonium and nitrite values. Diatoms dominated the biofilms at the reference site; ciliates reached higher densities at the polluted sites. Significant differences were found in species numbers, species diversity index, biomass, tolerance to pollution of the taxa, and the Pampean Diatom Index, between the reference and the impacted sites. This study shows that the biofilms growing on Schoenoplectus californicus are good indicators of the changes in the water quality of their environment.

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“…Pearson's correlation index and UPGMA procedure were used (Romesburg, 1984). With this analysis we identified several phytoplanktonic assemblages that consist in groups of co-occuring species (in the sense given by Symoens et al, 1988), which reflect the differences observed among the shallow lakes studied.…”

Section: Methodsmentioning

confidence: 99%

Algal assemblages from shallow lakes of the Salado River Basin (Argentina)

Izaguirre

Vinocur

1994

Hydrobiologia

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Within the framework of a floristic and ecological survey on the phytoplankton communities of shallow lakes of the Salado River Basin (Argentina), algal assemblages were compared by means of a Cluster Analysis.Phytoplankton communities were typical of eutrophic and meso-eutrophic systems, with many species associated with brackish and alkaline waters. Algal assemblages separated between lakes with high and low development of macrophytes. In the latter, phytoplankton assemblages were dominated by blue-green algae of the genera Oscillatoria, Raphidiopsis, Anabaena, Lyngbya, Microcystis and Anabaenopsis, often constituting algal blooms, and accompanied by coccal green algae. In lakes largely colonized by macrophytes, phytoplankton assemblages comprised a large number of tychoplanktonic species from periphyton and benthos communities. Changes in water levels were frequent and played an important role in the structure of the algal communities. During dry periods, the proportion of diatoms typical of brackish waters increased.

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Algal Communities of Continental Waters

Cited by 11 publications

References 73 publications

Effects of dredging on benthic diatom assemblages in a lowland stream

Effects of dredging on benthic diatom assemblages in a lowland stream

Biofilms coating Schoenoplectus californicus as indicators of water quality in the Río de la Plata Estuary (Argentina)

Algal assemblages from shallow lakes of the Salado River Basin (Argentina)

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