Influence of intertidal Manila clam Venerupis philippinarum aquaculture on biogeochemical fluxes

Lavoie, Marie-France; McKindsey, Christopher W.; Pearce, Christopher M.; Archambault, Philippe

doi:10.3354/aei00167

Cited by 11 publications

(5 citation statements)

References 65 publications

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“…Large bivalves were also found as the main drivers for the silicate fluxes across the SWI, conversely to A. senhousia only showing a marginal and non-significant effect (Table 2). Silicate fluxes across the SWI are known to be controlled by bioturbation [75] and biogenic silica dissolution, the later particularly enhanced in bivalve biodeposits containing diatom frustules [21,76]. Thereby, it appears fully coherent that the same faunal drivers (i.e., the main bioturbating invertebrate taxa) were identified as explaining variability in both silicate fluxes and bioturbation rates (sediment mixing and bioirrigation).…”

Section: Discussionmentioning

confidence: 93%

An Invasive Mussel (Arcuatula senhousia, Benson 1842) Interacts with Resident Biota in Controlling Benthic Ecosystem Functioning

Kauppi

Lavesque

Ciutat

et al. 2020

JMSE

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The invasive mussel Arcuatula senhousia has successfully colonized shallow soft sediments worldwide. This filter feeding mussel modifies sedimentary habitats while forming dense populations and efficiently contributes to nutrient cycling. In the present study, the density of A. senhousia was manipulated in intact sediment cores taken within an intertidal Zostera noltei seagrass meadow in Arcachon Bay (French Atlantic coast), where the species currently occurs at levels corresponding to an early invasion stage. It aimed at testing the effects of a future invasion on (1) bioturbation (bioirrigation and sediment mixing) as well as on (2) total benthic solute fluxes across the sediment–water interface. Results showed that increasing densities of A. senhousia clearly enhanced phosphate and ammonium effluxes, but conversely did not significantly affect community bioturbation rates, highlighting the ability of A. senhousia to control nutrient cycling through strong excretion rates with potential important consequences for nutrient cycling and benthic–pelagic coupling at a broader scale. However, it appears that the variability in the different measured solute fluxes were underpinned by different interactions between the manipulated density of A. senhousia and several faunal and/or environmental drivers, therefore underlining the complexity of anticipating the effects of an invasion process on ecosystem functioning within a realistic context.

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Section: Discussionmentioning

confidence: 93%

An Invasive Mussel (Arcuatula senhousia, Benson 1842) Interacts with Resident Biota in Controlling Benthic Ecosystem Functioning

Kauppi

Lavesque

Ciutat

et al. 2020

JMSE

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“…As such, microbial communities are increasingly used as indicators to estimate the environmental impacts of anthropogenic activities in different ecosystems (65–67). Aquaculture can impact ecosystem biogeochemistry in several ways, such as decreasing oxygen concentrations (9), increasing sulfide accumulation (22) and enhancing nutrient availability (10). Therefore, we need reliable indicators of these effects to help predict their environmental impacts on coastal systems.…”

Section: Discussionmentioning

confidence: 99%

“…These particles have two fates – they can be ingested and deposited to the sediments below as feces, or rejected, wrapped in mucus, and deposited as pseudofeces. The deposition of this OM stimulates a range of microbial processes by changing the availability of compounds used in microbial metabolism (8), altering oxygen penetration into sediments (9), and possibly promoting the build-up of chemicals that inhibit certain metabolic pathways (8, 10). Further, in a simulated lab study Newell et al (11) suggested that most aquaculture driven changes in nutrient fluxes presumably occur through intermediate microbial processes.…”

Section: Introductionmentioning

confidence: 99%

Oyster aquaculture enhances sediment microbial diversity– Insights from a multi-omics study

Stevens,

Ray,

Al-Haj

et al. 2023

Preprint

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The global aquaculture industry has grown substantially, with consequences for coastal ecology and biogeochemistry. Oyster aquaculture can alter the availability of resources for microbes that live in sediments as oysters move large quantities of organic material to the sediments via filter feeding, possibly leading to changes in the structure and function of sediment microbial communities. Here, we use a chronosequence approach to investigate the impacts of oyster farming on sediment microbial communities over 7 years of aquaculture activity in a temperate coastal system. We detected shifts in bacterial composition (16S rRNA amplicon sequencing), changes in gene expression (meta-transcriptomics), and variations in sediment elemental concentrations (sediment geochemistry) across different durations of oyster farming. Our results indicate that both the structure and function of bacterial communities vary between control (no oysters) and farm sites, with an overall increase in diversity and a shift towards anoxic tolerance in farm sites. However, little to no variation was observed in either structure or function with respect to farming duration suggesting these sediment microbial communities are resilient to change. We also did not find any significant impact of farming on heavy metal accumulation in the sediments. The minimal influence of long-term oyster farming on sediment bacterial function and biogeochemical processes as observed here can bear important consequences for establishing best practices for sustainable farming in these areas.ImportanceSediment microbial communities drive a range of important ecosystem processes such as nutrient recycling and filtration. Oysters are well-known ecological engineers, and their presence is increasing as aquaculture expands in coastal waters globally. Determining how oyster aquaculture impacts sediment microbial processes is key to understanding current and future estuarine biogeochemical processes. Here, we use a multi-omics approach to study the effect of different durations of oyster farming on the structure and function of bacteria and elemental accumulation in the farm sediments. Our results indicate an increase in the diversity of bacterial communities in the farm sites with no such increases observed for elemental concentrations. Further, these effects persist across multiple years of farming with an increase of anoxic tolerant bacteria at farm sites. The multi-omics approach used in this study can serve as a valuable tool to facilitate understanding of the environmental impacts of oyster aquaculture.

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“…Ejected organic matter is larger and more prone to deposition on the sediment, since pseudo-feces and fecal pellets are excreted as mucus-bound aggregates (Giles & Pilditch 2004). Unlike oysters and mussels, which are generally cultivated in boxes or attached to longlines in the water column (Christensen et al 2003, Carlsson et al 2012, Hyun et al 2013, Manila clams are farmed directly in intertidal sediment after dispersion (Bendell et al 2010, Lavoie et al 2016. Accumulation of organic matter and intense sediment reworking (i.e.…”

Section: Open Pen Access Ccessmentioning

confidence: 99%

Influence of Manila clam aquaculture on rates and partitioning of organic carbon oxidation in sediment of Keunso Bay, Yellow Sea

Kim

Lee

et al. 2020

Aquacult. Environ. Interact.

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We investigated the effects of Manila clam aquaculture on the rates and pathways of anaerobic organic carbon (OC) oxidation in highly bioturbated (HB) and poorly bioturbated (PB) sediment in Keunso Bay, Yellow Sea. Due to the labile organic matter supply via sediment reworking by Manila clams, the anaerobic OC oxidation rate in HB sediment (38.8 mmol m-2 d-1) was ~1.5 times higher than that in PB sediment (26.8 mmol m-2 d-1). Microbial Fe(III) reduction (FeR) dominated OC oxidation pathways in HB sediment, comprising 55 to 76% of anaerobic OC oxidation, whereas sulfate reduction (SR) was the dominant oxidation pathway in PB sediment, accounting for up to 92% of anaerobic OC oxidation. Despite higher anaerobic respiration rates at the HB site, concentrations of NH4+, PO43-, oxalate-extractable iron (Fe(II)(oxal)), and total reduced inorganic sulfur were 2 to 3 times lower in HB than in PB sediment. Conversely, the concentration of reactive Fe(III)(oxal) at the HB site (2243 mmol m-2) exceeded that at the PB site (1127 mmol m-2) by a factor of 2. These results indicate that bioturbation by Manila clams enhances the re-oxidation processes of reduced metabolites in the sediment, thereby prohibiting SR and promoting FeR. Overall, the results suggest that aquaculture activities of Manila clams shift the dominant OC oxidation pathways in sediment from SR to FeR, which generates relatively oxidized and less sulfidic environments.

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Influence of intertidal Manila clam Venerupis philippinarum aquaculture on biogeochemical fluxes

Cited by 11 publications

References 65 publications

An Invasive Mussel (Arcuatula senhousia, Benson 1842) Interacts with Resident Biota in Controlling Benthic Ecosystem Functioning

An Invasive Mussel (Arcuatula senhousia, Benson 1842) Interacts with Resident Biota in Controlling Benthic Ecosystem Functioning

Oyster aquaculture enhances sediment microbial diversity– Insights from a multi-omics study

Influence of Manila clam aquaculture on rates and partitioning of organic carbon oxidation in sediment of Keunso Bay, Yellow Sea

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