A Comparison of the Benthic Bacterial Communities Within and Surrounding Dreissena Clusters in Lakes

Lohner, Rachel N.; Sigler, Von; Mayer, Christine M.; Balogh, Csilla

doi:10.1007/s00248-007-9211-8

Cited by 33 publications

(28 citation statements)

References 40 publications

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“…Average taxa density and biomass (fourth-root transformed), contribution to the Bray-Curtis dissimilarity between druse and sediment communities (%), and cumulative contribution to the dissimilarity are given by each group. Density and biomass of invasive bivalves were excluded from this analysis Hydrobiologia (2012) 685:121-134 129 metabolic diversity compared to bare sediments (Lohner et al, 2007). Microbial community in druses can mineralize a significant portion of the nutrients contained in the D. polymorpha feces and pseudofeces, increasing bioavailable nutrients and altering nutrient cycling and nutrient concentrations in and near D. polymorpha druses (Lohner et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Density and biomass of invasive bivalves were excluded from this analysis Hydrobiologia (2012) 685:121-134 129 metabolic diversity compared to bare sediments (Lohner et al, 2007). Microbial community in druses can mineralize a significant portion of the nutrients contained in the D. polymorpha feces and pseudofeces, increasing bioavailable nutrients and altering nutrient cycling and nutrient concentrations in and near D. polymorpha druses (Lohner et al, 2007). In addition, aggregations of bivalve shells alter water flow and infiltration into sediments, affecting the transport of particles and solutes (Dame, 1996;Gutierrez et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

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Invasive mussels induce community changes by increasing habitat complexity

Burlakova

Karatayev

2011

Hydrobiologia

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Habitat complexity is among the most important factors affecting the diversity, structure, and density of natural communities. The invasive byssate bivalves zebra mussel (Dreissena polymorpha (Pallas, 1771)) and golden mussel (Limnoperna fortunei (Dunker, 1857)) are sessile suspension feeders that form aggregations (druses), physically changing sediments and increasing habitat complexity, and providing shelter and food for other benthic organisms. In this study, we explored the impact of the change in habitat complexity on benthic community created by druses of L. fortunei and D. polymorpha, formed on various sediments. D. polymorpha was studied in Europe (Naroch Lake, Belarus) and in North America (Glen Lake and Lower Nashotah Lake, USA), and L. fortunei was studied in South America (Río Tercero Reservoir, Argentina). Druses of D. polymorpha or L. fortunei and samples of bare nearby sediment (without druses of exotic mussels) were collected at each sampling site. We found significant changes in species richness, density, biomass, taxonomic, and trophic structure of communities formed in druses compared to the nearby bare sediments. Community taxonomic richness increased threefold, and density increased sevenfold with increasing complexity of habitat from sand to druse. The feeding functional group approach indicated that the impact of increased complexity was reinforced by an increase in food supply in D. polymorpha and L. fortunei druses. Along with increasing species richness and densities, byssate bivalves homogenized benthic communities.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Invasive mussels induce community changes by increasing habitat complexity

Burlakova

Karatayev

2011

Hydrobiologia

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“…Sediment can also be extensively modified using ecosystem engineering processes that directly and indirectly impact food webs and chemical processes. For example, the proliferation of Dreissena mussel clusters in lakes has increased benthic algal primary productivity, microbial and benthic diversity, and submerged aquatic vegetation due to the presence of their shell habitat and filtering of plankton [78][79][80].…”

Section: Clean Sediments As Stressorsmentioning

confidence: 99%

Assessing contaminated sediments in the context of multiple stressors

Burton

Johnston

2010

Enviro Toxic and Chemistry

144

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Abstract-Sediments have a major role in ecosystem functioning but can also act as physical or chemical stressors. Anthropogenic activities may change the chemical constituency of sediments and the rate, frequency, and extent of sediment transport, deposition, and resuspension. The importance of sediments as stressors will depend on site ecosystem attributes and the magnitude and preponderance of co-occurring stressors. Contaminants are usually of greater ecological consequence in human-modified, depositional environments, where other anthropogenic stressors often co-occur. Risk assessments and restoration strategies should better consider the role of chemical contamination in the context of multiple stressors. There have been numerous advances in the temporal and spatial characterization of stressor exposures and quantification of biological responses. Contaminated sediments causing biological impairment tend to be patchy, whereas more pervasive anthropogenic stressors, such as alterations to habitat and flow, physical disturbance, and nutrient addition, may drive large-scale ecosystem responses. A systematic assessment of relevant ecosystem attributes and reference conditions can assist in understanding the importance of sediments in the context of other stressors. Experimental manipulations then allow for the controlled study of dominant stressors and the establishment of causal links. This approach will result in more effective management of watersheds and waterways. Environ. Toxicol. Chem. 2010;29:262529: -264329: . # 2010

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“…Biofilms differing in their taxonomic composition and activity are likely to develop on various substrata. Particularly zebra mussels can modify the local microbial community (Lohner et al, 2007). Furthermore, even the same bacteria can have different properties depending on their substratum quality (Maki et al, 1990).…”

Section: Gammarid Responses To Biofilm Cuesmentioning

confidence: 99%

The impact of zebra mussel (Dreissena polymorpha) periostracum and biofilm cues on habitat selection by a Ponto-Caspian amphipod Dikerogammarus haemobaphes

et al. 2012

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Dikerogammarus haemobaphes is one of several Ponto-Caspian gammarids invading Europe in recent decades. Previously, it exhibited active preferences for habitats associated with another Ponto-Caspian alien, zebra mussel. Now we tested gammarid preferences for living mussels and their empty shells with biofilm and/or periostracum present or absent, to find the exact cues driving gammarid responses. We observed a strong preference of gammarids for biofilmed shells, even if the biofilm was relatively young (2-day old). However, the biofilm quality, related to the substratum on which it had developed (shells with or without the periostracum, or coated with nail varnish) did not affect their behaviour. In the absence of biofilm, gammarids positively responded to the shell periostracum. Furthermore, they clearly preferred living zebra mussels over old empty shells, independent of the presence or absence of biofilm, confirming the importance of a periostracum-associated cue in their substratum recognition. On the other hand, shells obtained shortly after mussels' death were preferred over living bivalves. Thus, the attractant is associated with fresh mussel shells, rather than with living mussels themselves. The ability of alien gammarids to locate sites inhabited by zebra mussels may contribute to their invasion success in novel areas inhabited by this habitat-forming bivalve.

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A Comparison of the Benthic Bacterial Communities Within and Surrounding Dreissena Clusters in Lakes

Cited by 33 publications

References 40 publications

Invasive mussels induce community changes by increasing habitat complexity

Invasive mussels induce community changes by increasing habitat complexity

Assessing contaminated sediments in the context of multiple stressors

The impact of zebra mussel (Dreissena polymorpha) periostracum and biofilm cues on habitat selection by a Ponto-Caspian amphipod Dikerogammarus haemobaphes

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