Quantification of sediment reworking by the Asiatic clam Corbicula fluminea Müller, 1774

Majdi, Nabil; Bardon, Léa; Gilbert, Franck

doi:10.1007/s10750-014-1849-x

Cited by 20 publications

(16 citation statements)

References 47 publications

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“…Dreissena polymorpha and D. bugensis (Summers et al 1996), and Soletellina diphos (Taware et al 2012). Majdi et al (2014) also observed that small C. fluminea showed the highest net sediment-reworking rate. Mane (1975) stated that body size was an important factor to change the metabolic rate in bivalves; hence, the older and large individuals had a lower metabolic rate than small individuals.…”

Section: Discussionmentioning

confidence: 90%

Effects of temperature and salinity on metabolic rate of the Asiatic clam Corbicula fluminea (Müller, 1774)

Xiao

et al. 2014

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The effects of temperature and salinity on the metabolism of the Asiatic clam Corbicula fluminea (mollusca, Lamellibranchia) were studied experimentally. Firstly, three indexes of basal metabolism (oxygen consumption rate, OCR; ammonia excretion rate, AER; and CO2 emission rate, CER), patterns of diurnal rhythm and O: N ratios were measured for three size ranges (large: h = 25.54 ± 1.96 mm, medium: h = 22.07 ± 1.33 mm and small: h = 17.70 ± 1.43 mm) at two salinities (0.3‰ and 1.8‰). The results showed that: (1) three indexes decreased with increasing body size. (2) no significant difference was found between two salinities for the O: N ratios of the small and large size, but a significant difference was found for the medium-sized one; (3) however, there were similar and distinct diurnal rhythms of metabolic rate at two salinities over a 24 hour period in three size C. fluminea.OCR, AER, CER, O: N ratios and Q10 (temperature coefficient) of small-sized C. fluminea were measured across five water temperatures (4, 11, 18, 25 and 32°C) and two salinities (0.3‰ and 1.8‰) in the following experiments. Our results of the small C. fluminea were as follows: there was no significant difference in the O: N ratios among the five temperatures and two salinity treatments; and no significant difference of three indexes between both salinity levels were observed at same temperature controlled; and three indexes increased significantly with increasing temperature from 4°C to 25°C, while no significant difference was observed in the 25-32°C range; and the highest Q10 coefficients (Q10 = 1.825 at salinity of 0.3‰ and Q10 = 1.683 at salinity of 1.8‰) were observed at the 18-25°C temperature increase, and the low values were found in the 4-11°C, 11-18°C and 25-32°C interval. It indicates that there is not a synergetic effect of our temperature and salinity on the metabolic rate of small C. fluminea, and a temperature of 18-25°C may represent an optimum adequate metabolic temperature range. For the purposes of ecological monitoring and restoration, small individuals of C. fluminea planted are more likely to survive than larger ones.

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Section: Discussionmentioning

confidence: 90%

Effects of temperature and salinity on metabolic rate of the Asiatic clam Corbicula fluminea (Müller, 1774)

Xiao

et al. 2014

SpringerPlus

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“…Many marine species rework sediment and thus play a key role in benthic ecosystems by shaping local geochemical gradients and resource distribution (e.g., Aller, 1982;Solan et al, 2004;Meysman et al, 2006). By contrast, in freshwaters, the bioturbation ability of only a few species or taxonomic groups, including tubificids, chironomids, and clams, has been investigated (Fisher et al, 1980;Matisoff & Xiaosong, 1998;Ciutat et al, 2005;Stief & de Beer, 2006;Lagauzère et al, 2009;Mermillod-Blondin et al, 2013;Majdi et al, 2014a). Yet, the recent work of De Nadaï- Monoury et al (2013Monoury et al ( , 2014 has provided a wider overview of bioturbator diversity in freshwater ecosystems.…”

Section: Discussionmentioning

confidence: 99%

Effects of flatworm predators on sediment communities and ecosystem functions: a microcosm approach

2016

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Predators affect prey and non-prey communities through consumptive effects (CE) and nonconsumptive effects (NCE), with consequences for ecosystem functions. Aquatic sediments are entanglements of particles that house diverse communities of microbes and invertebrates involved in ecosystem functions. In this study, we used experimental sediment cores as microcosms to explore the effects of two predatory flatworm species: Polycelis tenuis and Planaria torva. Flatworms secrete mucus for locomotion. Their motility results in particle displacement, which in turn increases the local availability of labile compounds. In this study we asked: (1) How do predators affect biomass allocation in a comprehensive community? (2) What is the impact of these effects on ecosystem functions? Our results showed that flatworms increased the sediment reworking rate and affected the packaging of biomass in prey (e.g., oligochaetes) and non-prey (e.g., protozoa) organisms through both CE and NCE. Causal links between community structure and ecosystem functions suggested different pathways of predator control: Polycelis indirectly influenced P availability, which increased the biomass of bacteria and protozoa, whereas Planaria elicited a trophic cascade and had a wider ranging diet than Polycelis. Our results support the use of flatworms as models to link the functions of organisms with those of ecosystems.

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“…The proportions of microspheres were quantified by fluorescence (bottom reading fluorescence; k excitation = 441 nm; k emission = 486 nm; number of readings per well: 9 9 9) using a microplate reader Sinergy Mx (BioTek Instruments Inc., Winooski, VT, USA) following Lagauzere et al (2011) and Majdi et al (2014). Fluorescence values resulting from the microsphere emissions were obtained by subtracting the fluorescence value of natural sediments at different depths (additional cores) from the fluorescence measurements of incubated sediments.…”

Section: Sediment Reworking Quantificationmentioning

confidence: 99%

“…In spite of their large size, gallery-diffusors in the young mangroves induced lower biodiffusion rates than in the bare sediment. The larger surface area of organisms in young mangroves may create higher friction constraints within sediments, thus increasing the energetic cost and frequency of burrowing and decreasing the local transport of sediments (Majdi et al, 2014). Such constraints may also be induced by the subsurface rhizome network in young mangroves, which may limit the biodiffusion processes (Suzuki et al, 2012;Bernard et al, 2014).…”

Section: Bioturbation Measurementmentioning

confidence: 99%

“…The presence and intensity of biodiffusive mixing and non-local transport may vary substantially according to the structure of the benthic communities (species richness, density, biomass, and biovolume; Sandnes et al, 2000;Duport et al, 2006;Gilbert et al, 2007;Majdi et al, 2014) which in turn depends on the environmental variables (temperature, organic matter or pollutant inputs, vegetation; Duport et al, 2007;Bernard et al, 2014;Cuny et al, 2015;Ferrando et al, 2015). Previous studies in ecology have shown that the productivity of an ecosystem is more dependent on its bioturbation functional richness than on its species richness (Solan et al, 2004;Mermillod-Blondin et al, 2005;Michaud et al, 2006;Norling et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Bioturbation functional roles associated with mangrove development in French Guiana, South America

et al. 2017

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 17613 Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@listes-diff.inp-toulouse.fr Abstract This study aims to qualify, quantify, and compare the sediment reworking rates induced by the meso-(0.25-1 mm) and macro-infauna ([1 mm) along a mangrove growth gradient in the sedimentary dynamics of the French Guiana coast. The characterization of the role of small-infauna bioturbation in mangroves is new despite their known numerical dominance in tropical environments. Bare sediment, pioneer mangroves, and young mangroves were investigated during the dry season and spring tide to characterize their environment, infaunal functional community structure and sediment reworking rates. The biodiffusion differed significantly between mangrove stages, co-varying mainly with density and functional richness. On the contrary, the non-local transport remained similar, despite the mangrove-agespecificity of infauna functional compositions, which responded to modifications in the nature and content of organic matter. The first mangrove infaunal functional sequence is described: organisms that first colonize deposited mud generate the maximum biodiffusive mixing and induce a total downward particle flux (BDF) as high as in the young mangroves; in the pioneer mangroves, the infauna variables and BDF are stressed to minimum values. Our study sheds light on the functional contribution of the small infauna in a mangrove coastal area and quantifies its role in particle transport during mangrove development.

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Quantification of sediment reworking by the Asiatic clam Corbicula fluminea Müller, 1774

Cited by 20 publications

References 47 publications

Effects of temperature and salinity on metabolic rate of the Asiatic clam Corbicula fluminea (Müller, 1774)

Effects of temperature and salinity on metabolic rate of the Asiatic clam Corbicula fluminea (Müller, 1774)

Effects of flatworm predators on sediment communities and ecosystem functions: a microcosm approach

Bioturbation functional roles associated with mangrove development in French Guiana, South America

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