Influence of suspended mussel farming on planktonic communities in Grande-Entrée Lagoon, Magdalen Islands (Québec, Canada)

Trottet, Aurore; Roy, Sylvie; Tamigneaux, Éric; Lovejoy, Connie; Tremblay, Réjean

doi:10.1016/j.aquaculture.2008.01.038

Cited by 37 publications

(21 citation statements)

References 37 publications

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“…; Trottet et al . ), the reports on zooplanktonic depletion in harvested areas are scarce in the literature. In relation to this, in the Ría de Vigo (Spain), Maar et al .…”

Section: Grazing Pressure Induced By Shellfish Farming: a Source Of Pmentioning

confidence: 99%

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Shellfish culture: a complex driver of planktonic communities

Hulot

Saulnier

Lafabrie

et al. 2018

Reviews in Aquaculture

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This review features recent updates on planktonic community alteration attributed to shellfish farming across three major drivers: predation, nutrient availability and the hydrodynamic environment. The grazing pressure generated by filter‐feeder communities (shellfish and epibionts) constitutes a ‘top‐down’ control of planktonic communities in aquaculture areas, inducing a significant depletion of planktonic organism concentration. By selecting larger cells during the filtration process, shellfish also favour smaller organisms in the water column, leading to the dominance of the latter. Direct excretion and the benthic alteration process tend to fertilise the water column and significantly stimulate primary production. The associated epibiont community particularly contributes to this regeneration process. The expected consequence of increasing nutrient availability is generally a planktonic shift in favour of small planktonic species. However, investigation on the relationship between planktonic structure and nutrient conditions has revealed a wide complexity and variability. Finally, all structures used in shellfish farming activities interact with water currents and tend to significantly increase the residence time of planktonic organisms inside shellfish farming areas. In grazing‐dominated systems, an increase in residence time tends to increase the exposure time of planktonic populations to detrimental conditions, reducing biomass and production. The general consequences of shellfish farming are a decrease in primary production in farming ecosystems, and a possible alteration of structure and functioning of planktonic communities. The implications of shellfish farming also appear to be quite different from other aquaculture activities such as fish farming, which tend to promote primary production leading to eutrophication process.

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“…; Trottet et al . ), the reports on zooplanktonic depletion in harvested areas are scarce in the literature. In relation to this, in the Ría de Vigo (Spain), Maar et al .…”

Section: Grazing Pressure Induced By Shellfish Farming: a Source Of Pmentioning

confidence: 99%

“…; Pietros & Rice ; Trottet et al . ), described as ‘regenerated production’ (Legendre & Rassoulzadegan ). The associated epibiont community can contribute significantly to this stimulation of primary production processes.…”

Section: Bivalve Excretion: a Complex Driver Of Planktonic Communitiesmentioning

confidence: 99%

Shellfish culture: a complex driver of planktonic communities

Hulot

Saulnier

Lafabrie

et al. 2018

Reviews in Aquaculture

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“…Since smaller algal cells (< 3 µm) are less well retained compared to larger cells (> 3 µm; Riisgård & Møhlenberg 1979, but see Strohmeier et al 2012) and since the small cells are assumed to be better competitors for light and nutrients (Riegman et al 1993), an increase in small-sized phytoplankton abundance could be expected to occur under heavy filtration pressure. The few studies that included heterotrophic plankton when examining the effect of bivalves on the plankton community found a decrease in microzooplankton as a result of bivalve grazing (Lam-Hoai et al 1997, Pace et al 1998, Trottet et al 2008b, Froján et al 2014. A decrease in heterotrophic nanoflagellate predators was suggested as an explanation for the increase in picophytoplankton (< 2 µm) (Cranford et al 2009), while in other areas a decrease in nano-sized predators (2−20 µm) did not result in an increase of the picoalgae (Froján et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Impact of introduced juvenile mussel cultures on the pelagic ecosystem of the western Wadden Sea, The Netherlands

Jacobs¹,

Riegman²,

Meer³

2016

Aquacult. Environ. Interact.

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Pelagic mussel collectors provide an alternative to fishing for mussel seed from natural beds. These collectors, which have been recently introduced in the Dutch part of the Wadden Sea, facilitate the settlement and survival of blue mussel Mytilus edulis larvae. We assessed the removal of plankton by juvenile mussels and the recovery of plankton after filtration. A mesocosm experiment, using natural sea water, was executed on 12 occasions from June to October in 2010 and 2011. Mussel filtration resulted in large reductions in nanophytoplankton, ciliate and total chlorophyll biomasses (65−62%), while picophytoplankton and bacterial biomasses were reduced to a lower extent (38 and 18%). After filtration, mussels were removed and the plankton community was allowed to recover for 8 d, which is the average residence time of water in the area. During this recovery period, net growth rates of bacteria, pico-and nanophytoplankton increased initially in the mussel-filtered mesocosms, but at the end of the recovery period, growth rates were similar in mussel-filtered and control mesocosms. At the end of the recovery period, plankton concentrations between control and mussel mesocosms were not statistically different despite the initial large reduction due to mussel filtration. Our results suggest that nutrients released by mussels during filtration might have stimulated the filtered plankton community, enabling recovery to filtration within 8 d.

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“…The ecological significance of nutrient regeneration consists of a relaxation of nutrient limitation for phytoplankton, which may result in enhanced primary production (Smaal 1991, Prins et al 1995. Therefore, cultured shellfish can also exert a bottomup nutrient control on phytoplankton populations (Ogilvie et al 2000, Cranford et al 2007, Trottet et al 2008, Froján et al 2014, which is considered to be an important feedback of bivalves on their own food source (Smaal et al 2001). The remineralization of pseudofaeces and faeces also releases CO 2 and alters benthic-pelagic coupling, processes that should be accounted for in an ecosystem approach.…”

Section: Ecosystem Approach: the Need For An Integral Analysismentioning

confidence: 99%

An integrated ecosystem approach for assessing the potential role of cultivated bivalve shells as part of the carbon trading system

Filgueira

Byron²,

Comeau

et al. 2015

Mar. Ecol. Prog. Ser.

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The role of bivalve mariculture in the CO 2 cycle has been commonly evaluated as the balance between respiration, shell calcium carbonate sequestration and CO 2 release during biogenic calcification. However, this approach neglects the ecosystem implications of cultivating bivalves at high densities, e.g. the impact on phytoplankton dynamics and benthic−pelagic coupling, which can significantly contribute to the CO 2 cycle. Therefore, an ecosystem approach that accounts for the trophic interactions of bivalve aquaculture, including dissolved and particulate organic and inorganic carbon cycling, is needed to provide a rigorous assessment of the role of bivalve mariculture in the CO 2 cycle. On the other hand, the discussion about the inclusion of shells of cultured bivalves into the carbon trading system should be framed within the context of ecosystem goods and services. Humans culture bivalves with the aim of producing food, not sequestering CO 2 in their shells, therefore the main ecosystem good provided by bivalve aquaculture is meat production, and shells should be considered as by-products of this human activity. This reasoning provides justification for dividing up respired CO 2 between meat and shell when constructing a specific bivalve CO 2 budget for potential use of bivalve shells in the carbon trading system. Thus, an integrated ecosystem approach, as well as an understanding of the ecosystems goods and services of bivalve aquaculture, are 2 essential requisites for providing a reliable assessment of the role of bivalve shells in the CO 2 cycle.

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Influence of suspended mussel farming on planktonic communities in Grande-Entrée Lagoon, Magdalen Islands (Québec, Canada)

Cited by 37 publications

References 37 publications

Shellfish culture: a complex driver of planktonic communities

Shellfish culture: a complex driver of planktonic communities

Impact of introduced juvenile mussel cultures on the pelagic ecosystem of the western Wadden Sea, The Netherlands

An integrated ecosystem approach for assessing the potential role of cultivated bivalve shells as part of the carbon trading system

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