Benthic trophic network in the Bay of Banyuls-sur-Mer (northwest Mediterranean, France): An assessment based on stable carbon and nitrogen isotopes analysis

Carlier, Antoine; Riera, Pascal; Amouroux, Jean-Michel; Bodiou, Jean-Yves; Grémare, Antoine

doi:10.1016/j.ecss.2006.10.001

Cited by 106 publications

(36 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mean SI signatures were in agreement with diets based on benthopelagic prey. The highest trophic level occupied by invertebrates was similar to that found in many benthic continental shelf communities (Davenport & Bax 2002, Sherwood & Rose 2005, Carlier et al 2007, Le Loc'h et al 2008, Kürten et al 2013). The estimated 4 trophic levels of the benthic communities taking the trophic position of primary consumers as baseline did not reflect the differences in species composition between areas and periods.…”

supporting

confidence: 71%

“…More 15 N-depleted recently sedimented SPM or microphytobenthos (Currin et al 1995, Kang et al 2003 on the IS can be assimilated by surface deposit feeders and/or resuspended and assimilated by the suspension feeders, and this source, a mixture of SPM and SSPM, which constitutes a single pool of OM, was reflected throughout the trophic web, as verified by Carlier et al (2007) and Le Loc'h et al (2008). Conversely, on the OS, benthic diatoms experience less ideal conditions for growth, and the first level of consumers assimilates the mineralised sedimented pelagic production or the more refractory POM; consequently, δ 15 N signatures are higher.…”

Section: Spatial Variationmentioning

confidence: 84%

“…The usefulness of dual stable isotope results for elucidating sources of carbon and trophic levels within the food webs of continental shelf ecosystems has been evaluated in many studies conducted since Fry (1988). Isotopic characterisations of potential food sources and benthic invertebrates in terms of carbon and nitrogen suggest that the benthic trophic web is mostly based on the organic matter in surface sediments, which interacts closely with suspended POM and sedimented organic matter (Davenport & Bax 2002, Carlier et al 2007, Le Loc'h et al 2008. Nearshore versus offshore variation of the nitrogen isotope signature of fishes and invertebrates may reflect alterations in productivity regimes over the Newfoundland and Labrador continental shelf (Sherwood & Rose 2005).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Trophic structure of benthic communities in the Cabo Frio upwelling system (southeastern Brazilian shelf): a temporal study using stable isotope analysis

Corbisier¹,

Petti²,

Soares³

et al. 2014

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

supporting

confidence: 71%

Section: Spatial Variationmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Trophic structure of benthic communities in the Cabo Frio upwelling system (southeastern Brazilian shelf): a temporal study using stable isotope analysis

Corbisier¹,

Petti²,

Soares³

et al. 2014

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

“…Similar results have been previously reported for typical structures of tropical coastal lagoons (Pauly et al, 1998; Zetina‐Rejón et al, 2003; Choy et al,2008). In addition, most of the consumer organisms (from primary to tertiary consumer) showed N composition following the same functional guild (Cabana and Rasmussen,1996; Barletta and Blaber,2007; Carlier et al,2007; Choy et al,2008).…”

Section: Discussionmentioning

confidence: 99%

“…Levels of this element in the environment have increased over the last 50 years as a result of anthropogenic activities (Fitzgerald and Lamborg,2005). The area of impact of Hg includes complex and dynamic marine ecosystems like estuaries and coastal lagoons (Conaway et al,2003; Bloom et al,2004), which are important biological niches because of their large productivity and biodiversity (Carlier et al,2007). Bioavailable Hg enters coastal ecosystems through different pathways in the water column either dissolved or associated with small particles; and depending on the hydrodynamics, the particulate fraction may be retained and accumulated in sediments (Wang et al,2004).…”

Section: Introductionmentioning

confidence: 99%

Mercury transfer in a subtropical coastal lagoon food web (SE Gulf of California) under two contrasting climatic conditions

Jara-Marini

Soto-Jiménez

Páez‐Osuna

2011

Environmental Toxicology

View full text Add to dashboard Cite

Mercury (Hg) transference through an established and defined food web from an urbanized subtropical coastal lagoon (SE Gulf of California) was examined by using carbon and nitrogen stable isotope and Hg analyses. Concentrations of Hg in seawater (0.045-0.078 μg L(-1)), predominantly incorporated to the particulate fraction (60% of total), were lower than those found in highly contaminated coastal areas around the world (0.18-16 μg L(-1)). Although levels of Hg available for the biota (e.g., associated to the reactive and pyrite fractions; 0.11-0.15 μg g(-1)) were within of effects range-low (ER-L, 0.15-0.71 μg g(-1)) these concentrations represented from 46.6 to 67.0% of the total Hg pool that may be transferred through food web. The sequence of bio-accumulation of Hg in studied species was according with their functional guild: tertiary consumer (0.85-1.15 μg g(-1)) > secondary consumers (0.084-0.168 μg g(-1)) > primary consumers (0.014-0.160 μg g(-1)) > primary producers (0.016-0.056 μg g(-1)). Hg concentrations increased for each successive trophic position estimate through δ(15) N isotopic values, although these relationships showed differences between dry and rainy seasons (R(2) = 0.37 and R(2) = 0.39 between δ(15) N vs. Hg in organisms, respectively). We concluded that Hg is being positively transferred (biomagnification factor >1) through the studied food web probably enhanced by the favorable environmental conditions for Hg-methylation (e.g., fine sediments rich in organic matter, and environmental conditions changes of the redox, pH, and temperature) found in this urbanized coastal water, however, the study of processes methlylation and biomagnifcation of Hg need further investigations.

show abstract

Utility of Nd isotope ratio as a tracer of marine animals: regional variation in coastal seas and causal factors

Nakano

Shin

et al. 2018

Ecosphere

View full text Add to dashboard Cite

2018. Utility of Nd isotope ratio as a tracer of marine animals: regional variation in coastal seas and causal factors. Ecosphere 9(8):Abstract. Isotopic compositions of animal tissue are an intrinsic marker commonly used to trace animal origins and migrations; however, few isotopes are effective for this purpose in marine environments, especially on a local scale. The isotope ratio of the lanthanoid element neodymium (Nd) is a promising tracer for coastal animal migrations. Neodymium derives from the same geologic materials as strontium, well known as an isotopic tracer ( 87 Sr/ 86 Sr) for terrestrial and anadromous animals. The advantage of the Nd isotope ratio ( 143 Nd/ 144 Nd, expressed as e Nd ) is that it varies greatly in the ocean according to the geology of the neighboring continents, whereas oceanic 87 Sr/ 86 Sr is highly uniform. This study explored the utility of the Nd isotope ratio as a marine tracer by investigating the variation of e Nd preserved in tissues of coastal species, and the causes of that variation, in a region of northeastern Japan where the bedrock geology is highly variable. We measured e Nd and 87 Sr/ 86 Sr in seawater, river water, and soft tissues of sedentary suspension feeders: the mussels Mytilus galloprovincialis and Mytilus coruscus and the oyster Crassostrea gigas. We also measured concentrations of three lanthanoids (La, Ce, and Pr) in shellfish bodies to determine whether the Nd in shellfish tissue was derived from solution in seawater or from suspended particulates. The e Nd values in shellfish tissue varied regionally (À6 to +1), matching the ambient seawater, whereas all 87 Sr/ 86 Sr values were homogeneous and typical of seawater (0.7091-0.7092). The seawater e Nd values were in turn correlated with those in the adjacent rivers, linking shellfish e Nd to the geology of river catchments. The depletion of Ce compared to La and Pr (negative Ce anomaly) suggested that the Nd in shellfish was derived from the dissolved phase in seawater. Our results indicate that the distinct Nd isotope ratio derived from local geology is imprinted, through seawater, on the soft tissues of shellfish. This result underscores the potential of e Nd as a tracer of coastal marine animals.

show abstract

Benthic trophic network in the Bay of Banyuls-sur-Mer (northwest Mediterranean, France): An assessment based on stable carbon and nitrogen isotopes analysis

Cited by 106 publications

References 56 publications

Trophic structure of benthic communities in the Cabo Frio upwelling system (southeastern Brazilian shelf): a temporal study using stable isotope analysis

Trophic structure of benthic communities in the Cabo Frio upwelling system (southeastern Brazilian shelf): a temporal study using stable isotope analysis

Mercury transfer in a subtropical coastal lagoon food web (SE Gulf of California) under two contrasting climatic conditions

Utility of Nd isotope ratio as a tracer of marine animals: regional variation in coastal seas and causal factors

Contact Info

Product

Resources

About