Influence of unionid mussels (Mollusca: Unionidae) on sediment stability: an artifi cial stream study

Zimmerman, Gregory F.; Szalay, Ferenc A. de

doi:10.1127/1863-9135/2007/0168-0299

Cited by 43 publications

(37 citation statements)

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“…Freshwater mussels are a group of long-lived, sessile, filter-feeding benthic invertebrates that provide ecological services (Vaughn & Hakenkamp, 2001) to freshwater systems including sediment stabilisation (Zimmerman & de Szalay, 2007), benthic-pelagic coupling (Vaughn, Gido & Spooner, 2004;Spooner & Vaughn, 2006) and introduced species, river impoundments and contaminants (Strayer et al, 2004). Estimates suggest that~70% of the nearly 300 species of freshwater mussels in North America are threatened, endangered, extinct or of special concern (Master et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Effects of elevated water temperature on physiological responses in adult freshwater mussels

2015

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Summary Freshwater mussels (order Unionoida) face multiple environmental stressors, which pose serious conservation challenges to this diverse assemblage of aquatic invertebrates. Of these stressors, elevated water temperature from global climate change and other anthropogenic sources may be the most ubiquitous and could be placing many mussel populations dangerously close to their thermal maxima. We tested the hypothesis that elevated water temperatures (20, 25, 30 and 35 °C) adversely affected physiological responses in adults of four North American species of mussels (Amblema plicata, Elliptio complanata, Fusconaia flava and Lampsilis cardium) in 21‐d laboratory tests. Oxygen consumption rates were directly affected by temperature in E. complanata and L. cardium, and indirectly affected by temperature in A. plicata and F. flava. Rates of O2 consumption were generally positively correlated with water temperature. Ammonium excretion rates varied significantly with temperature in E. complanata and generally increased with temperature. The amount of O2 consumed relative to nitrogen excreted (O : N ratio), varied significantly with temperature in A. plicata, E. complanata and F. flava. The tissue condition index varied among temperatures and species. These data suggest that elevated temperatures can alter metabolic rates in native mussels and may decrease the amount of energy that is available for key biological processes, such as survival, growth and reproduction.

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Section: Introductionmentioning

confidence: 99%

Effects of elevated water temperature on physiological responses in adult freshwater mussels

2015

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“…It was previously reported that unionid mussels (A. ligamentina and P. fasciolaris) decreased sediment stability in the first week after they were introduced into the sediment but increased sediment stability after 2 weeks (Zimmerman and de Szalay, 2007). The polychaete Nereis diversicolor did not influence the critical erosion velocity after 24 h of incubation (Widdows et al, 2009);however, Fernandes et al (2006) found that this species increased sediment stability (critical erosion velocity) after 20 days of incubation.…”

Section: Discussionmentioning

confidence: 89%

“…In addition, increased density of the brittlestar Amphiura filiformis decreased the suspended sediment load (Amaro et al, 2007). The bivalves Actinonaias ligamentina and Ptychobranchus fasciolaris did not influence the amount or particle size of suspended sediment (Zimmerman and de Szalay, 2007). Different taxa have distinct effects on sediment resuspension; thus, changes in the biotic community alter sediment erodibility .…”

Section: Introductionmentioning

confidence: 95%

The role of tubificid worms (Limnodrilus hoffmeisteri) in sediment resuspension: a microcosm study

Zhang

Shang

et al. 2014

Ann. Limnol. - Int. J. Lim.

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-Sediment resuspension is an important internal lake process in regulating nutrient cycling and ecosystem structure. Tubificid worms are widely and abundantly distributed in freshwater ecosystems and are able to alter the sediment characteristics. This study was conducted to verify the hypothesis that the alteration of sediments by tubificids may substantially influence the sediment resuspension process. Specifically, we investigated the influence of Limnodrilus hoffmeisteri (Tubificidae) on sediment resuspension using an apparatus designed to simulate the sediment resuspension process in Lake Taihu (China). We examined L. hoffmeisteri according to its density (30 000 ind.m x2 ) in Lake Taihu and simulated the light ) wind processes present in Lake Taihu. Tubificids loosened the sediment through their feeding and defecation activities and increased the sediment water content. The appearance of tubificids increased the suspended solids (SS) in a 1.6 m water column under all three wind processes. During the sedimentation process, SS decreased rapidly in both the control and tubificid treatments. The total SS in the water column was significantly increased by tubificids and it changed significantly with time. In addition, the small size particles of the SS in the tubificid treatment were higher than that in the control. So, the appearance of tubificid worms (L. hoffmeisteri) enhanced sediment resuspension and raised the proportion of small size particles in SS.

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“…Field observations showed that freshwater pearl mussels are often found in tight clusters across a river reach, although in some river they can create a ‘blanket’ over the bed, which is commonly known as a ‘mussel bed’ (Strayer ). The ability of freshwater mussels, of varying species, to cluster and live in ‘mussels beds’ has been shown to increase bed stability and cohesion (Zimmerman and de Szalay, ) and in tidal mussels be important for growth and survival (Van de Koppel et al ., ). It has been suggested (Widdows et al ., ; Zimmerman and de Szalay, ) that the ability of freshwater mussels to cluster can in fact increases bed stability by decreasing shear stresses for and increasing cohesion.…”

Section: Discussionmentioning

confidence: 99%

Quantification of Freshwater Pearl Mussel Entrainment Velocities and Controlling Factors; a Flume Study

et al. 2015

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Increased flood frequency and magnitude are predicted for Scotland, and the country contains several of the world's largest recruiting populations of freshwater pearl mussel (Margaritifera margaritifera). This study provides a unique flume experiment to measure the near‐bed velocities required for freshwater pearl mussel entrainment and factors affecting their movement. It represents the first quantitative attempt at examining the precise water velocities at which freshwater pearl mussel become vulnerable to displacement during high flow events. Measurement of the near‐bed velocities at which the mussels moved was undertaken using an indoor recirculating flume. The effect of the different parameters (bed substrate, mussel burial depth, mussel curvature, mussel alignment, shell curvature and the presence of a simulated foot) on entrainment velocity was tested in the flume and their significance was verified using Kruskal–Wallis and Mann Whitney tests. Bed substrate was found to have the biggest influence on mussel entrainment velocities with averages of 0.86 ms−1, 0.95 ms−1, 1.01 ms−1 and 1.42 ms−1 for sand, gravel, mixed bed and boulder beds respectively. Stepwise logistic regression showed that bed substrate, foot presence, mussel length, mussel burial depth and shell curvature were sufficient to explain mussel entrainment velocity. These findings provide valuable information for the modelling of freshwater pearl mussel dynamics in streams systems and assessing the vulnerability of endangered mussel populations to higher flows associated with climate change in Scotland. Copyright © 2015 John Wiley & Sons, Ltd.

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Influence of unionid mussels (Mollusca: Unionidae) on sediment stability: an artifi cial stream study

Cited by 43 publications

References 0 publications

Effects of elevated water temperature on physiological responses in adult freshwater mussels

Effects of elevated water temperature on physiological responses in adult freshwater mussels

The role of tubificid worms (Limnodrilus hoffmeisteri) in sediment resuspension: a microcosm study

Quantification of Freshwater Pearl Mussel Entrainment Velocities and Controlling Factors; a Flume Study

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