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Bar plots (± 1 standard error) showing changes in sediment characteristics among five zones defined by shifts in dreissenid dominance (Fig. 2): a grainsize score (GS), b iron concentrations (Fe), c total organic carbon (TOC), and d combined mussel counts
Source publication
Dreissenid mussels can alter nutrient cycling and algal productivity in many freshwater ecosystems. But their effects on sedimentary phosphorus dynamics remain largely undefined. Here, we report evidence that dreissenids affect the concentrations of five sedimentary phosphorus fractions and total phosphorus. During our study, zebra mussels were sti...
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False mussels are recognized as the brackish water equivalent of zebra mussels, although the abiotic and habitat conditions that mediate these invaders’ success are barely known. In this context, we aimed to evaluate the native and non-native geographical distribution of Mytilopsis species worldwide and assess biological traits, environmental condi...
Many countries lack the economic capacity to effectively manage invasive species. Yet, the direct socioeconomic impact generally much outweighs the expected costs of prevention. A distinct lack of monetary cost quantification associated with key invasive species groups impedes decision-making, and thus resource allocation, by policy makers to addre...
Mytilopsis leucophaeata is an estuarine bivalve native from the Gulf of Mexico and possibly part of the eastern USA, which invaded many regions around the globe. Despite the previous discovery that two genetic lineages of this species exist, one comprising the northeastern USA and Eurasia and another having invaded South America, there were no gene...
Aim
To assess spatio‐temporal and taxonomic patterns of available information on the costs of invasive freshwater bivalves, as well as to identify knowledge gaps.
Location
Global.
Time period
1980–2020.
Taxon studied
Bivalvia.
Methods
We synthesize published global economic costs of impacts from freshwater bivalves using the InvaCost database a...
False mussels are recognized as the brackish water equivalent of zebra mussels, although the abiotic and habitat conditions that mediate these invaders’ success are barely known. In this context, we aimed to evaluate the native and non-native geographical distribution of Mytilopsis species worldwide and assess biological traits, environmental condi...
Citations
Dreissenids have greatly altered ecosystem function within the Great Lakes, but their effects on offshore surface sediments and infaunal communities are not well understood. This study explores the correlation among quagga mussel biomass, density of offshore benthos, and nutrients in surface sediments to understand the potential dreissenid facilitation of interactions between benthos and nutrient dynamics in lakes Michigan, Huron, and Ontario. The strongest relationships seen in this study were the positive associations between oligochaete density and quagga mussel biomass in all lakes. Weaker relationships were noted between quagga mussel biomass and surface sediment organic carbon, total phosphorus, and total nitrogen. In areas with higher mussel biomass, there were lower concentrations of organic carbon and total phosphorus in sediments, even though mussels are thought to increase the delivery of organic material into the benthos. Surface sediment total nitrogen concentrations were lower in high mussel biomass areas in Lake Ontario but not in lakes Michigan and Huron. These results support recent findings that non-native mussels can greatly alter nutrient cycles, as well as demonstrate the need for improved understanding of the effects mussel beds have on the surrounding benthic communities, and the cascading effects these changes may have for nutrient and carbon cycles.
