Seasonal dynamics of trophic relationships among co-occurring suspension-feeders in two shellfish culture dominated ecosystems

Lefebvre, Sébastien; Leal, Julio César Marín; Dubois, Stanislas F.; Orvain, Francis; Blin, Jean-Louis; Bataillé, Marie-Paule; Ourry, Alain; Galois, Robert

doi:10.1016/j.ecss.2009.02.002

Cited by 74 publications

(79 citation statements)

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“…The positive influence of silt on benthic diatoms must be involved in the long-term trends in macrozoobenthic community by increasing the trophic plasticity of the macrozoobenthic community, making possible the coexistence of a wide variety of different species in sediments surrounding oyster farms. However, interaction between MPB and macrozoobenthos must be more thoroughly examined to verify (1) whether long-term MPB development is a factor favouring the trophic plasticity in these habitats (Dubois et al 2007, Lefebvre et al 2009) and (2) the long-term trends concerning macro zoobenthic assemblage evolution (Timsit et al 2004). …”

Section: Resultsmentioning

confidence: 99%

“…The trophic environment of benthic fauna in these systems is therefore characterised by a high degree of spatial heterogeneity, such as transition zones and patches (Deegan & Garritt 1997, Dubois et al 2007) that are related to the landscape of their habitats. It appears very relevant to understand the spatial patterns of primary producers in relation to sediment in order to elucidate the role they play in the trophic food web and to assess the respective contributions of both components to consumer's diet (Lefebvre et al 2009). The questions of spatial distribution of benthic primary producer are thus critical to gain new insights in the dynamics and structure of macrozoobenthos that inhabit these environments (Herman et al 2000).…”

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confidence: 99%

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Spatial and temporal interaction between sediment and microphytobenthos in a temperate estuarine macro-intertidal bay

Orvain¹,

Lefebvre²,

Montepini³

et al. 2012

Mar. Ecol. Prog. Ser.

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Intertidal flats of the estuarine macro-intertidal Baie des Veys (France) were investigated to identify spatial features of sediment and microphytobenthos (MPB) in April 2003. Gradients occurred within the domain, and patches were identified close to vegetated areas or within the oyster-farming areas where calm physical conditions and biodeposition altered the sediment and MPB landscapes. Spatial patterns of chl a content were explained primarily by the influence of sediment features, while bed elevation and compaction brought only minor insights into MPB distribution regulation. The smaller size of MPB patches compared to silt patches revealed the interplay between physical structure defining the sediment landscape, the biotic patches that they contain, and that median grain-size is the most important parameter in explaining the spatial pattern of MPB. Small-scale temporal dynamics of sediment chl a content and grain-size distribution were surveyed in parallel during 2 periods of 14 d to detect tidal and seasonal variations. Our results showed a weak relationship between mud fraction and MPB biomass in March, and this relationship fully disappeared in July. Tidal exposure was the most important parameter in explaining the summer temporal dynamics of MPB. This study reveals the general importance of bed elevation and tidal exposure in muddy habitats and that silt content was a prime governing physical factor in winter. Biostabilisation processes seemed to behave only as secondary factors that could only amplify the initial silt accumulation in summer rather than primary factors explaining spatial or long-term trends of sediment changes. KEY WORDS: Benthic diatoms · Benthos · Coastal ecosystems · Intertidal flats · Baie des Veys · Normandie · Spatial pattern · Geostatistics · KrigingResale or republication not permitted without written consent of the publisher Mar Ecol Prog Ser 458: 53-68, 2012 Kronkamp 1999, Perissinotto et al. 2003). Dynamics of marine systems vary widely in their temporal and spatial components due to complexity in the benthopelagic coupling (Zajac 2008). The trophic environment of benthic fauna in these systems is therefore characterised by a high degree of spatial heterogeneity, such as transition zones and patches (Deegan & Garritt 1997, Dubois et al. 2007) that are related to the landscape of their habitats. It appears very relevant to understand the spatial patterns of primary producers in relation to sediment in order to elucidate the role they play in the trophic food web and to assess the respective contributions of both components to consumer's diet (Lefebvre et al. 2009). The questions of spatial distribution of benthic primary producer are thus critical to gain new insights in the dynamics and structure of macrozoobenthos that inhabit these environments (Herman et al. 2000).There is a general consensus that MPB biomass varies along wide-scale environmental gradients and is not affected by an isolated variable but, rather, depends on a combination of factors controlling ...

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Spatial and temporal interaction between sediment and microphytobenthos in a temperate estuarine macro-intertidal bay

Orvain¹,

Lefebvre²,

Montepini³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…This is particularly advantageous to avoid competition in densely populated reef habitats (Buhr & Winter 1977), such as the reefs modelled in the present study. The development of different particle capture and selection strategies reduces the competition be tween suspension feeders (Lefebvre et al 2009) and might explain the co-occurrence of high abundances of L. conchilega and the suspension feeding bivalve C. edule in the BMSM reef.…”

Section: Carbon Flows In Lanice Conchilega Reef Areasmentioning

confidence: 99%

Lanice conchilega structures carbon flows in soft-bottom intertidal areas

Smet¹,

Oevelen²,

Vincx³

et al. 2016

Mar. Ecol. Prog. Ser.

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“…Similarly, shellfish cultures (e.g. oyster, mussel and clam) exhibit strong top-down control of primary production by filtering large volumes of phytoplankton from the water column (Dupuy et al 2000, Souchu et al 2001, Lefebvre et al 2009, Grangeré et al 2010.…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton community distribution in relation to environmental parameters in three aquaculture systems in a Chinese subtropical eutrophic bay

Jiang¹,

Chen²,

Zeng³

et al. 2012

Mar. Ecol. Prog. Ser.

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There is concern about the impact of expanding coastal aquaculture activity, particularly in China, with the biggest aquaculture industry in the world. We conducted 3 cruises to the oyster, kelp and fish farms of the Xiangshan Bay during the winter−spring transition (02/2009), winter (01/2010) and spring (04/2010). Our aim was to explore the spatial heterogeneity of the phytoplankton community in different culture habitats and evaluate the effects of mariculture on phytoplankton. Different culture types formed unique small-scale habitats that exhibited various en vironmental gradients and forms of phytoplankton community patchiness. Both environmental (i.e. temperature, salinity, transparency, suspended solids, dissolved oxygen, pH, dissolved inorganic nitrogen, PO 4 -P, SiO 3 -Si, N/P, and total organic carbon) and phytoplankton (i.e. cell density, chlorophyll a, species richness, main dominant species, and community structure) parameters were significantly different among the 3 culture habitats. Canonical correspondence analysis showed that phytoplankton distribution was mainly influenced by temperature, nutrition, salinity and suspended solids. Oyster and kelp farming effectively alleviated coastal eutrophication and also increased species richness and diversity; fish farming did not. Temperature elevation caused by the thermal discharge from a power plant induced phytoplankton blooms during the winter and winter−spring transition. Nevertheless, the filtering effect of suspended oysters dramatically reduced microalgal biomass. The kelp and oyster farms were much better than the fish farm in terms of water quality, phytoplankton composition, and habitat restoration function. These results provide guidelines for future policy-making in aquaculture as well as eutrophication control and management.

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Seasonal dynamics of trophic relationships among co-occurring suspension-feeders in two shellfish culture dominated ecosystems

Cited by 74 publications

References 50 publications

Spatial and temporal interaction between sediment and microphytobenthos in a temperate estuarine macro-intertidal bay

Spatial and temporal interaction between sediment and microphytobenthos in a temperate estuarine macro-intertidal bay

Lanice conchilega structures carbon flows in soft-bottom intertidal areas

Phytoplankton community distribution in relation to environmental parameters in three aquaculture systems in a Chinese subtropical eutrophic bay

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