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Fluvial biofilms

Metal Ecotoxicology in Fluvial Biofilms Potential Influence of Water Scarcity... [Pg.42]

Keywords Community ecotoxicology, Fluvial biofilm. Metal pollution. Nutrients,... [Pg.42]

Fluvial biofilms (also known as phytobenthos or periphyton) are attached communities consisting of bacteria, algae and fungi embedded within a polysaccharide matrix [20]. In rivers, these communities are the first to interact with... [Pg.45]

Table 1 Summary of metal concentrations (in )ig of total metal concentration) causing toxicity on fluvial biofilms (in terms of effective concentrations EC50) after acute exposure (of few hours of exposure) and chronic exposure (of several weeks of exposure)... Table 1 Summary of metal concentrations (in )ig of total metal concentration) causing toxicity on fluvial biofilms (in terms of effective concentrations EC50) after acute exposure (of few hours of exposure) and chronic exposure (of several weeks of exposure)...
Table 2 Fate and effects of metals in a stream receiving a point-source of metals (upper part of the table) or diffuse input via urban runoff (lower part of the table). Summary of the expected influence of four different hydrological situations base-flow in a rainy period a flood after a rainy period low-flow after a long period of low rainfall (water scarcity) and a flood produced after this drought. Metal concentration (M) metal retention efficiency (measured on the basis of the nutrient spiraling concept) exposure (dose and duration) bioaccumulation (in fluvial biofilms) and metal sensitivity (of biofihns)... Table 2 Fate and effects of metals in a stream receiving a point-source of metals (upper part of the table) or diffuse input via urban runoff (lower part of the table). Summary of the expected influence of four different hydrological situations base-flow in a rainy period a flood after a rainy period low-flow after a long period of low rainfall (water scarcity) and a flood produced after this drought. Metal concentration (M) metal retention efficiency (measured on the basis of the nutrient spiraling concept) exposure (dose and duration) bioaccumulation (in fluvial biofilms) and metal sensitivity (of biofihns)...
Highlights the worst scenario in terms of metal pollution effects on fluvial biofilms... [Pg.50]

Serra A, Guasch H (2009). Effects of chronic copper exposure on fluvial systems linking stmctural and physiological changes of fluvial biofilms with the in-stream copper retention. Sci Tot Environ 407 5274... [Pg.54]

Cu Acute toxicity on biofilms EC50 ( C) 20-50 (spring) 100-350 (summer) EC50 (Y) 230 (low P) 718 (highP) EC50 (Fo) 56-92 (low P) 196-206 (high P) Field samples Ter river" Fluvial microcosms Field samples"... [Pg.48]

Chronic effects on biofilms EC50 6-25 indirect effects EC50 50-2500 direct effects Changed algal species >50 Fluvial microcosms (low P) " Experimental stream ... [Pg.48]

Chronic effects on biofilms 10 effects on settlement 100 biomass, change spp. Fluvial microcosms (high P)" °... [Pg.48]

See other pages where Fluvial biofilms is mentioned: [Pg.42]    [Pg.43]    [Pg.46]    [Pg.46]    [Pg.47]    [Pg.49]    [Pg.42]    [Pg.43]    [Pg.46]    [Pg.46]    [Pg.47]    [Pg.49]    [Pg.48]    [Pg.48]    [Pg.109]    [Pg.174]   
See also in sourсe #XX -- [ Pg.41 , Pg.44 ]



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Fluviale

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