caa a22 4500 605546509 CHVBK 20210128100941.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s10236-015-0841-y doi (NATIONALLICENCE)springer-10.1007/s10236-015-0841-y Effect of algae on flocculation of suspended bed sediments in a large shallow lake. Consequences for ecology and sediment transport processes [Elektronische Daten] [Miguel de Lucas Pardo, Dirk Sarpe, Johan Winterwerp] Lake Markermeer, a large shallow lake in The Netherlands, suffers from turbidity and ecology problems. As part of a study aiming to mitigate these problems, we study flocculation processes in the lake; in particular, the possible mutual flocculation between algae and re-suspended bed sediments. We show that sediment re-suspended from the bed of the lake can flocculate, forming flocs for which size is a function of the turbulence level in the water column. Moreover, we also demonstrate that algae and re-suspended bed sediments can mutually flocculate, yielding organic-inorganic aggregates. These aggregates have different features to those of their individual components, some of which have been measured and characterized in this paper. Furthermore, the characteristics of the resulting organic-inorganic flocs are strongly influenced by the type of algae in the aggregate. We found that, in the case of flocs consisting of bed sediments and filamentous algae, flocculation yields smaller flocs than for bed sediments only, resulting in an increased turbidity in the water column. In the case of flocs consisting of bed sediments and colonial algae, flocs grow faster and become larger than bed sediment flocs, which may result in the depletion of most colonies from the water column. Springer-Verlag Berlin Heidelberg, 2015 Flocculation nationallicence Cohesive sediments nationallicence Blue-green algae nationallicence Markermeer nationallicence Turbidity nationallicence de Lucas Pardo Miguel Environmental Fluid Mechanics, Delft University of Technology, 2628CN, Delft, The Netherlands aut Sarpe Dirk Netherlands Institute of Ecology (NIOO), 3631 AC, Nieuwersluis, The Netherlands aut Winterwerp Johan Environmental Fluid Mechanics, Delft University of Technology, 2628CN, Delft, The Netherlands aut Ocean Dynamics Springer Berlin Heidelberg 65/6(2015-06-01), 889-903 1616-7341 65:6<889 2015 65 10236 https://doi.org/10.1007/s10236-015-0841-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10236-015-0841-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- de Lucas Pardo Miguel Environmental Fluid Mechanics, Delft University of Technology, 2628CN, Delft, The Netherlands aut NATIONALLICENCE 700 1- Sarpe Dirk Netherlands Institute of Ecology (NIOO), 3631 AC, Nieuwersluis, The Netherlands aut NATIONALLICENCE 700 1- Winterwerp Johan Environmental Fluid Mechanics, Delft University of Technology, 2628CN, Delft, The Netherlands aut NATIONALLICENCE 773 0- Ocean Dynamics Springer Berlin Heidelberg 65/6(2015-06-01), 889-903 1616-7341 65:6<889 2015 65 10236