Chemical and Biological Changes in the Ter River Induced by a Series of Reservoirs

Puig, Mariàngels; Armengol, Joan; González, Guillermo; Peñuelas, Josep; Sabater, Sergi; Sabater, Francesc

doi:10.1007/978-1-4684-5392-8_26

Cited by 20 publications

(20 citation statements)

References 3 publications

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“…al., 1989, several summaries (Ridley & Steel, 1975;Baxter, 1977;Brooker, 1981) and of specialised journals (Regulated Streams and Regulated Rivers: Research and Management). In spite of this, Puig et al (1987) write that the effect of Spanish reservoirs upon rivers is practically unknown.…”

Section: Consequences To Rivers Of Building Reservoirsmentioning

confidence: 94%

See 1 more Smart Citation

State-of-the-art of reservoir limnology and water quality management

Straškraba¹,

Tundisi

Duncan

1993

Comparative Reservoir Limnology and Water Quality Management

156

117

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The chapter presents state-of-the-art of reservoir limnology and water quality modelling and their use in reservoir water quality management. Reservoirs are classified into dam reservoirs and impoundments. The features of dam reservoirs and lakes are confronted, both qualitative (absolute) and quantitative (relative) differences being specified. Different consequences of reservoir construction for the river are outlined. Methodological problems concerning sampling and mathematical modelling are dealt with. Theoretical aspects of reservoir limnology cover the position of reservoirs in the river continuum concept, retention time as a key factor of reservoir limnology and reservoir aging (short term trophic upsurge) and long term reservoir ecosystem evolution. Pulse effects are treated as a theoretical problem with considerable consequences for reservoir management. Specific attention is devoted to multiple reservoir systems. Reservoir water quality management approaches and options as well as their use for specific reservoir uses are analyzed. The perspective for future reservoir investigations is treated.

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Section: Consequences To Rivers Of Building Reservoirsmentioning

confidence: 94%

“…McComb & Williams (1987) and Puig et al (1987) claim that the impact of reservoirs on downstream biological communities belong to future research needs. Managing impoundment releases (timing and quantity) to reduce impact on downstream aquatic communities is a particular topics of concern.…”

Section: Applied Problems: Managing Reservoir Water Qualitymentioning

confidence: 98%

State-of-the-art of reservoir limnology and water quality management

Straškraba¹,

Tundisi

Duncan

1993

Comparative Reservoir Limnology and Water Quality Management

156

117

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“…Our results show that these metrics did not only increase at the downstream reach but also decreased at the upstream reach after severe flow disturbances. Previous studies in a nearby river found that Shannon diversity was not related to pollution but with flow disturbance (Puig et al, 1987). A study in a chalk stream in England (Pinder and Farr, 1987) attributed an increase of Shannon diversity below a WWTP input to a subsidy effect on oligotrophic waters.…”

Section: Temporal Variabilitymentioning

confidence: 95%

Point source effects on density, biomass and diversity of benthic macroinvertebrates in a Mediterranean stream

Ortiz¹,

Puig²

2007

River Research & Apps

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We sampled benthic macroinvertebrates above and below a point source effluent in La Tordera stream (NE, Spain) over [2001][2002] to assess the effects of nutrient enrichment on the structure, and taxonomic composition of the benthic macroinvertebrate community. Below the point source, discharge, specific conductance and nutrient concentrations were higher than at the upstream reach, while dissolved oxygen (DO) decreased. Macroinvertebrate density was higher at the downstream reach than at the upstream reach on most dates but the two reaches did not differ in macroinvertebrate biomass.On average, taxa richness at the upstream reach was 20% higher than at the downstream reach. Several taxa, especially mayflies, stoneflies and caddisflies, were present only at the upstream reach. Shannon diversity was similar between the two reaches on 50% of the dates. Ordination analysis clearly separated the samples of the upstream reach from the samples of the downstream reach in the first axis and corroborated the effect of the point source on the benthic community. The two reaches followed a similar temporal pattern with respect to the distribution of taxa along the second axis of the ordination analysis. Higher similarities between the two reaches in taxa composition, densities and biomass after the spates of April and May 2002, suggest that flooding events may act as a reset mechanism for benthic communities and play an important role in stream restoration.

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“…The middle and lower parts of the Ebro, the Llobregat and the Ter are subjected to a Mediterranean climate, implying high hydrological variability in these sections. Most of these streams and rivers are regulated and the existence of dams implies striking longitudinal differences in the river (Puig et al 1987). …”

Section: Study Areamentioning

confidence: 99%

Indicator taxa of benthic diatom communities: a case study in Mediterranean streams

Tornés

Cambra

Gomà

et al. 2007

Ann. Limnol. - Int. J. Lim.

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A key issue in the implementation of the Water Framework Directive is the classification of streams and rivers using biological quality parameters and type-specific reference conditions. Four groups of stream types were defined in NE Spain on the basis of 152 diatom samples by means of detrended correspondence analysis and classification techniques. Diatom analysis was restricted to epilithic taxa, and the sites included gradients ranging from near-natural streams to sites with poor ecological quality. The main gradient shows a clear separation of sites in relation to the degree of human influence: polluted streams (mainly located in the lowlands) differ from streams in mountainous areas and in the Pyrenees. A second gradient is related to physiographical features. Headwater streams can be distinguished by their catchment geology. The type-specific diatom taxa for the stream types studied were determined by using indicator species analysis (IndVal). The type-specific taxa from near-natural streams are coincident with the indicator taxa for high ecological status. Human impact reduced the typological heterogeneity of the diatom community composition. Overall, the diatom communities in NE Spain exhibit a regional distribution pattern that closely corresponds with that observed in river systems elsewhere. Physiographical differences are only evident in undisturbed sites, while nutrient enrichment and other human disturbances may mask the regional differences in the distribution of diatom communities.

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Chemical and Biological Changes in the Ter River Induced by a Series of Reservoirs

Cited by 20 publications

References 3 publications

State-of-the-art of reservoir limnology and water quality management

State-of-the-art of reservoir limnology and water quality management

Point source effects on density, biomass and diversity of benthic macroinvertebrates in a Mediterranean stream

Indicator taxa of benthic diatom communities: a case study in Mediterranean streams

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