EStimating Contaminants tRansfers Over Complex food webs (ESCROC): An innovative Bayesian method for estimating POP's biomagnification in aquatic food webs

Ballutaud, Marine; Drouineau, Hilaire; Carassou, Laure; Munoz, Gabriel; Chevillot, Xavier; Labadie, Pierre; Budzinski, Hélène; Lobry, Jérémy

doi:10.1016/j.scitotenv.2018.12.058

Cited by 15 publications

(19 citation statements)

References 59 publications

(76 reference statements)

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“…It is interesting to note that, in the Gironde estuarine environment, TMFs in demersal food webs were in the range of 0.2-1.5, with a TMF of 0.9 for the linear PFOS, while derived TMF for PFOS in benthic food webs was 2.5 [68]. The reanalysis of the same dataset with advanced statistical techniques showed that none of the investigate PFASs could be considered to biomagnify in the whole estuarine food web [69].…”

Section: Trophic Magnification Factorsmentioning

confidence: 97%

Trophic Magnification of Legacy (PCB, DDT and Hg) and Emerging Pollutants (PFAS) in the Fish Community of a Small Protected Southern Alpine Lake (Lake Mergozzo, Northern Italy)

Mazzoni

Ferrario

Bettinetti

et al. 2020

Water

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The biomagnification of mercury, polychlorobiphenyls (PCBs), dichlorodiphenyltrichloroethane and its metabolites (DDTs) and perfluoroalkyl acids substances (PFASs) was evaluated in the trophic web of Lake Mergozzo, a small and deep Italian subalpine lake, which has been chosen because it is a protected environment, and discharges into the lake are mostly avoided. Carbon source and relative trophic levels were calculated by using 13C and 15N stable isotopes, respectively, and trophic magnification factors (TMFs) were derived. Zooplankton and thirteen species of fish were collected and analyzed, and the results showed the elevated level of biota contamination from both legacy and emerging pollutants, even if direct discharges were avoided. Concentrations in biota, expressed as sums of compounds, ranged from 0.4 to 60 µg kg−1 wet weight (ww) for PFASs, from 16 to 1.3 104 µg kg−1 lipid content (lw) for DDTs, from 17 to 1.5 104 µg kg−1 lw for PCBs and from 20.0 to 501 µg kg−1 ww for mercury (Hg). TMFs of this deep, cold lake, with a prevalent pelagic trophic chain, were high and clearly indicated fish biomagnification, except for PFAS. The biomagnification capability of PFAS in a fish-only food web was discussed by using the biomagnification of Hg as a benchmark for assessing their bioaccumulation potential.

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Section: Trophic Magnification Factorsmentioning

confidence: 97%

Trophic Magnification of Legacy (PCB, DDT and Hg) and Emerging Pollutants (PFAS) in the Fish Community of a Small Protected Southern Alpine Lake (Lake Mergozzo, Northern Italy)

Mazzoni

Ferrario

Bettinetti

et al. 2020

Water

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“…The juvenile common sole diet composition and associated variability were obtained from ESCROC mixing model estimations for the Gironde estuarine food web (Ballutaud et al, 2019). Five preys were identified in sole diet.…”

Section: Diet Compositionmentioning

confidence: 99%

“…For this, we used a common sole DEB model (Mounier et al, submitted, this special issue) coupled with a one-compartment TK model to account for the influence of environmental conditions on biological flows, and thus on contaminant flows. Among these environmental conditions, water temperature (Chaalali et al, 2013a) and prey availability (Chevillot et al, 2019) are already affected by local and global modifications, and the composition of the sole diet is known to fluctuate with size, season and prey availability (Ballutaud et al, 2019;Pasquaud, 2006). Also, contamination of the environment and thus of prey is expected to change with the management of pollutant sources.…”

Section: Introductionmentioning

confidence: 99%

Dietary bioaccumulation of persistent organic pollutants in the common sole Solea solea in the context of global change. Part 2: Sensitivity of juvenile growth and contamination to toxicokinetic parameters uncertainty and environmental conditions variability in estuaries

Mounier

Loizeau

Pecquerie

et al. 2020

Ecological Modelling

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…Moreover, whatever the method used (SCA or BA), information on diets is generally collected by considering each consumer (species or trophic group) independently (but see Ainsworth et al, 2010, Pacella et al, 2013, or Ballutaud et al, 2019, without simultaneously integrating all consumers into a single framework. The IsoWeb model (Kadoya et al, 2012) represents a step toward a more ecosystem-oriented approach to dietary analysis.…”

Section: Introductionmentioning

confidence: 99%

EcoDiet: A hierarchical Bayesian model to combine stomach, biotracer, and literature data into diet matrix estimation

Hernvann

Gascuel

Kopp

et al. 2022

Ecological Applications

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Although quantifying trophic interactions is a critical path to understanding and forecasting ecosystem functioning, fitting trophic models to field data remains challenging. It requires flexible statistical tools to combine different sources of information from the literature and fieldwork samples. We present EcoDiet, a hierarchical Bayesian modeling framework to simultaneously estimate food‐web topology and diet composition of all consumers in the food web, by combining (1) a priori knowledge from the literature on both food‐web topology and diet proportions; (2) stomach content analyses, with frequencies of prey occurrence used as the primary source of data to update the prior knowledge on the topological food‐web structure; (3) and biotracers data through a mixing model (MM). Inferences are derived in a Bayesian probabilistic rationale that provides a formal way to incorporate prior information and quantifies uncertainty around both the topological structure of the food web and the dietary proportions. EcoDiet was implemented as an open‐source R package, providing a user‐friendly interface to execute the model, as well as examples and guidelines to familiarize with its use. We used simulated data to demonstrate the benefits of EcoDiet and how the framework can improve inferences on diet matrix by comparison with classical network MM. We applied EcoDiet to the Celtic Sea ecosystem, and showed how combining multiple data types within an integrated approach provides a more robust and holistic picture of the food‐web topology and diet matrices than the literature or classical MM approach alone. EcoDiet has the potential to become a reference method for building diet matrices as a preliminary step of ecosystem modeling and to improve our understanding of prey–predator interactions.

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EStimating Contaminants tRansfers Over Complex food webs (ESCROC): An innovative Bayesian method for estimating POP's biomagnification in aquatic food webs

Cited by 15 publications

References 59 publications

Trophic Magnification of Legacy (PCB, DDT and Hg) and Emerging Pollutants (PFAS) in the Fish Community of a Small Protected Southern Alpine Lake (Lake Mergozzo, Northern Italy)

Trophic Magnification of Legacy (PCB, DDT and Hg) and Emerging Pollutants (PFAS) in the Fish Community of a Small Protected Southern Alpine Lake (Lake Mergozzo, Northern Italy)

Dietary bioaccumulation of persistent organic pollutants in the common sole Solea solea in the context of global change. Part 2: Sensitivity of juvenile growth and contamination to toxicokinetic parameters uncertainty and environmental conditions variability in estuaries

EcoDiet: A hierarchical Bayesian model to combine stomach, biotracer, and literature data into diet matrix estimation

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