The impact of freshwater mussels (order Unionoida) on river bed characteristics and sediment flux: A flume-based study.
Leng, A., Davies-Vollum, S. and Ramsey, A. (2018). The impact of freshwater mussels (order Unionoida) on river bed characteristics and sediment flux: A flume-based study.. 5th European Congress of Conservation Biology. doi: 10.17011/conference/eccb2018/108015
© the Authors, 2018
Unionoid mussels are considered keystone species due to their ability to modify and link pelagic, benthic and hyporheic environments in freshwater systems, [1,2,3] yet empirical data to determine their influence on river bed dynamics and sediment flux is lacking. A recirculating flume-based study using fifty individuals of the unionoid species Anodonta anatina investigated the impact of this species on bedform development and particle flux of a polymodal substrate representative of the grain size distribution of the mussel's river habitat. River seston was added to the flume at weekly intervals, and water and substrate conditions were monitored for the eight-week duration of the study. The control experiment had mussels absent from the flume. It was found that the presence of A. anatina increased the organic content of the substrate through deposition of pseudofaeces, and led to significant reductions in near-bed velocity, boundary shear-stress and the amount of suspended and dissolved solids in the water column. However, despite these impacts a greater quantity of sediment and a larger range of grainsizes entered the flume's sediment trap compared to the control experiment when mussels were absent. The impact of mussel bioturbation appears to outweigh any sediment stabilisation effects arising from the increased organic content of the substrate and the reduced near bed velocities. Additionally, sediment grainsize and longitudinal wetted profile measurements indicate that the mussels increased bed roughness and heterogeneity of the substrate. Given that freshwater mussels can exist at very high densities within rivers,  increased mixing and mobilisation of bedload, improved habitat heterogeneity and the transferral of material from the water to the substrate by mussels implies they constitute a critical element in the sediment and nutrient dynamics of fluvial systems. References: 1. Vaughn, C.C., Nichols, S.J. & Spooner, D.E., 2008. Community and foodweb ecology of freshwater mussels. Journal of the North American Benthological Society, 27(2), pp.409-423. 2. Gutierrez, J.L. et al., 2003. Mollusks as ecosystem engineers: the role of shell production in aquatic habitats. Oikos, 101(1), pp.79-90. 3. Aldridge, D.C. et al, 2007. Freshwater mussel abundance predicts biodiversity in UK lowland rivers. Aquatic Conservation-Marine and Freshwater Ecosystems, 17(January), pp.554-564. ...
PublisherOpen Science Centre, University of Jyväskylä
ConferenceECCB2018: 5th European Congress of Conservation Biology. 12th - 15th of June 2018, Jyväskylä, Finland
MetadataShow full item record
- ECCB 2018 
Showing items with similar title or keywords.
Interaction between the endangered freshwater pearl mussel Margaritifera margaritifera, the duck mussel Anodonta anatina and the fish host (Salmo) : acquired and cross-immunity Chowdhury, Motiur; Salonen, Jouni; Marjomäki, Timo; Taskinen, Jouni (Kluwer Academic Publishers; Springer Netherlands, 2018)The common duck mussel Anodonta anatina can live in sympatry with—and use the same host, brown trout (Salmo trutta)—as the endangered freshwater pearl mussel Margaritifera margaritifera. Since the glochidia release of A. ...
The endangered freshwater pearl mussel Margaritifera margaritifera shows adaptation to a local salmonid host in Finland Taskinen, Jouni; Salonen, Jouni K. (Wiley-Blackwell, 2022)1. The freshwater pearl mussel Margaritifera margaritifera (FPM) is an endangered unionid which has a glochidium larva that attaches to the gills of Atlantic salmon Salmo salar or brown trout S. trutta, although some FPM ...
Effect of glochidia infection on growth of fish : freshwater pearl mussel Margaritifera margaritifera and brown trout Salmo trutta Chowdhury, M. Motiur R.; Marjomäki, Timo J.; Taskinen, Jouni (Springer, 2021)Effect of freshwater mussels’ (Unionoida) glochidia on the growth of fish host has remained poorly studied. We compared the specific growth rate of the juvenile, PIT-marked brown trout (Salmo trutta) between uninfected ...
Immunization of trout (Salmo trutta) against freshwater pearl mussel (Margaritifera margaritifera) by duck mussel (Anodonta anatina) glochidia Chowdhury, Motiur (2013)Freshwater pearl mussel Margaritifera margaritifera is endangered throughout its range of distribution in Europe. In some rivers M. margaritifera may co-occur with the duck mussel Anodonta anatina. Brown trout Salmo trutta ...
The effect of temperature on cercariae production of two Rhipidocotyle trematodes parasitizing freshwater mussel, Anodonta anatina. Alabi, Waidi (2013)Two bucephalid trematodes, Rhipidocotyle campanula and R. fennica are known to infect the duck mussel, Anodonta anatina. The infection will lead to decrease growth, reproduction and survival of A. anatina. Given the important ...