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Littérature scientifique sur le sujet « Trophic Magnification Factor »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Trophic Magnification Factor"

Zhang, Wenfeng, Weixiong Huang, Xiao Chen, Xingfen Yang et Xiaoguang Yang. « Stable carbon and nitrogen isotope evidence for the low biomagnification of mercury in marine fish from the South China Sea ». Marine and Freshwater Research 71, n^o 8 (2020) : 1017. http://dx.doi.org/10.1071/mf19069.

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The low biomagnification of total mercury (THg) and methylmercury (MeHg) in commercially important marine fish from the south coast of China has been demonstrated through the analysis of stable carbon and nitrogen isotopes. In this study, levels of THg, MeHg and stable carbon and nitrogen isotope ratios were determined. Stable isotope signatures of carbon and nitrogen (13C/12C, 15N/14N) were used to trace the carbon flow and reconstruct trophic interactions. Levels of THg and MeHg in fish muscle samples were <220ngg–1. The trophic levels of sampled fish ranged from 2.31 to 5.03. The trophic magnification slopes were ~0.1 for both THg and MeHg, whereas the trophic magnification factor showed that the average biomagnification of THg and MeHg per trophic level was 3.02 and 2.87ngHgg–1 respectively along fish food chains, indicating low biomagnification potential of these mercury species. The low concentrations of MeHg and low biomagnification of mercury in marine fish may result from the trophic levels and habitats of these fish.

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Khoshnamvand, Mehdi, Almasieh Almasieh et Shahram Kaboodvandpour. « Assessment of Mercury Accumulation and Magnification in a Freshwater Food Chain : Sediment, Benthos and Benthivorous Fish ». Iranian Journal of Toxicology 12, n^o 5 (1 septembre 2018) : 17–22. http://dx.doi.org/10.32598/ijt.12.5.545.1.

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Background: Present study was conducted to measure the level of total mercury (tHg) in sediments, benthos and benthivorous fish (i.e., common carp) for determining Biota (Benthos)-Sediment Accumulation Factor (BSAF), as well as Biomagnification Factor (BMF) of tHg between two trophic levels of benthos and benthivorous fish caught from Sanandaj Gheshlagh Reservoir (SGR) in the west of Iran. Methods: Samples of sediments and benthos biomasses were collected from three sampling stations. Common carps were captured around the selected stations during July to December 2010. Results: Means accumulated tHg (±SE) in sediments, benthos masses and muscle tissue of common carp were 117.66±9.72, 94.3±5.02 and 233.21±20.67 ng g-1 dry weight, respectively. Means accumulated tHg in benthos masses and muscle tissue of the common carp during the studying months showed no significant differences (P>0.05), while it was significantly differed in sediment samples (P<0.05). Results showed that there were statistically significant differences between accumulated tHg between sediment and benthos mass samples collected from the study sites (P<0.05). Conclusion: During the study, all calculated BSAF measurements were less than one, indicating transmission of mercury from sediment to benthos was not considerable. However, mercury BMFs was higher than one, denoting mercury biomagnification occurred from the benthos trophic level to the higher trophic level (i.e., common carp) in study site. Hence, the health considerations have to be taken in to the account for consumption of fishery products of SGR.

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McLeod, Anne M., Jon A. Arnot, Katrine Borgå, Henriette Selck, Donna R. Kashian, Ann Krause, Gord Paterson, G. Doug Haffner et Ken G. Drouillard. « Quantifying uncertainty in the trophic magnification factor related to spatial movements of organisms in a food web ». Integrated Environmental Assessment and Management 11, n^o 2 (6 janvier 2015) : 306–18. http://dx.doi.org/10.1002/ieam.1599.

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Ek, Caroline, Agnes M. L. Karlson, Sture Hansson, Andrius Garbaras et Elena Gorokhova. « Stable Isotope Composition in Daphnia Is Modulated by Growth, Temperature, and Toxic Exposure : Implications for Trophic Magnification Factor Assessment ». Environmental Science & ; Technology 49, n^o 11 (6 mai 2015) : 6934–42. http://dx.doi.org/10.1021/acs.est.5b00270.

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Hallanger, Ingeborg G., Nicholas A. Warner, Anders Ruus, Anita Evenset, Guttorm Christensen, Dorte Herzke, Geir W. Gabrielsen et Katrine Borgå. « Seasonality in contaminant accumulation in Arctic marine pelagic food webs using trophic magnification factor as a measure of bioaccumulation ». Environmental Toxicology and Chemistry 30, n^o 5 (18 mars 2011) : 1026–35. http://dx.doi.org/10.1002/etc.488.

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Starrfelt, Jostein, Katrine Borgå, Anders Ruus et Eirik Fjeld. « Estimating Trophic Levels and Trophic Magnification Factors Using Bayesian Inference ». Environmental Science & ; Technology 47, n^o 20 (30 septembre 2013) : 11599–606. http://dx.doi.org/10.1021/es401231e.

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Li, Bei, Juanheng Wang, Guocheng Hu, Xiaolin Liu, Yunjiang Yu, Dan Cai, Ping Ding, Xin Li, Lijuan Zhang et Chongdan Xiang. « Bioaccumulation Behavior and Human Health Risk of Polybrominated Diphenyl Ethers in a Freshwater Food Web of Typical Shallow Lake, Yangtze River Delta ». International Journal of Environmental Research and Public Health 20, n^o 3 (2 février 2023) : 2671. http://dx.doi.org/10.3390/ijerph20032671.

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Background: Polybrominated diphenyl ethers (PBDEs) have been commonly found in aquatic ecosystems. Many studies have elucidated the bioaccumulation and biomagnification of PBDEs in seas and lakes, yet few have comprehensively evaluated the bioaccumulation, biomagnification, and health risks of PBDEs in shallow lakes, and there is still limited knowledge of the overall effects of biomagnification and the health risks to aquatic organisms. Methods: In this study, a total of 154 samples of wild aquatic organism and environmental samples were collected from typical shallow lakes located in the Yangtze River Delta in January 2020. The concentrations of PBDEs were determined by an Agilent 7890 gas chromatograph coupled and an Agilent 5795 mass spectrometer (GC/MS) and the bioaccumulation behavior of PBDEs was evaluated in 23 aquatic organisms collected from typical shallow lakes of the Yangtze River Delta. Furthermore, their effects on human health were evaluated by the estimated daily intake (EDI), noncarcinogenic risk, and carcinogenic risk. Results: The concentrations of ΣPBDE (defined as the sum of BDE-28, -47, -100, -99, -153, -154, -183, and -209) in biota samples ranged from 2.36 to 85.81 ng/g lipid weight. BDE-209, BDE-153 and BDE-47 were the major PBDE congeners. The factors affecting the concentration of PBDEs in aquatic organisms included dietary habits, species, and the metabolic debromination ability of the PBDE congeners. BDE-209 and BDE-47 were the strongest bioaccumulative PBDE congeners in aquatic organisms. Additionally, except for BDE-99, BDE-153 and BDE-154, the trophic magnification factor (TMF) values of PBDE congeners were significantly higher than 1. Moreover, the log Kow played a significant role in the biomagnification ability of PBDE congeners. The noncarcinogenic risk of PBDE congeners and carcinogenic risk of BDE-209 from aquatic products were lower than the thresholds. Conclusions: PBDE congeners were bioaccumulated and biomagnified to varying degrees in aquatic organisms from typical shallow lakes. Both the noncarcinogenic and carcinogenic risks assessment of edible aquatic products indicated that none of the PBDE congeners pose health risks to the localite. This study will provide a basis for a comprehensive assessment of PBDEs in aquatic ecosystems in shallow lakes and for environmental prevention measures for decision-makers.

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Borgå, Katrine, Karen A. Kidd, Derek CG Muir, Olof Berglund, Jason M. Conder, Frank APC Gobas, John Kucklick, Olaf Malm et David E. Powell. « Trophic magnification factors : Considerations of ecology, ecosystems, and study design ». Integrated Environmental Assessment and Management 8, n^o 1 (26 août 2011) : 64–84. http://dx.doi.org/10.1002/ieam.244.

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Burkhard, Lawrence P., Katrine Borgå, David E. Powell, Pim Leonards, Derek C. G. Muir, Thomas F. Parkerton et Kent B. Woodburn. « Improving the Quality and Scientific Understanding of Trophic Magnification Factors (TMFs) ». Environmental Science & ; Technology 47, n^o 3 (5 février 2013) : 1186–87. http://dx.doi.org/10.1021/es305253r.

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Du, Bowen, Samuel P. Haddad, Andreas Luek, W. Casan Scott, Gavin N. Saari, Lauren A. Kristofco, Kristin A. Connors et al. « Bioaccumulation and trophic dilution of human pharmaceuticals across trophic positions of an effluent-dependent wadeable stream ». Philosophical Transactions of the Royal Society B : Biological Sciences 369, n^o 1656 (19 novembre 2014) : 20140058. http://dx.doi.org/10.1098/rstb.2014.0058.

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Though pharmaceuticals are increasingly observed in a variety of organisms from coastal and inland aquatic systems, trophic transfer of pharmaceuticals in aquatic food webs have not been reported. In this study, bioaccumulation of select pharmaceuticals was investigated in a lower order effluent-dependent stream in central Texas, USA, using isotope dilution liquid chromatography–tandem mass spectrometry (MS). A fish plasma model, initially developed from laboratory studies, was tested to examine observed versus predicted internal dose of select pharmaceuticals. Pharmaceuticals accumulated to higher concentrations in invertebrates relative to fish; elevated concentrations of the antidepressant sertraline and its primary metabolite desmethylsertraline were observed in the Asian clam, Corbicula fluminea , and two unionid mussel species. Trophic positions were determined from stable isotopes (δ 15 N and δ 13 C) collected by isotope ratio-MS; a Bayesian mixing model was then used to estimate diet contributions towards top fish predators. Because diphenhydramine and carbamazepine were the only target compounds detected in all species examined, trophic magnification factors (TMFs) were derived to evaluate potential trophic transfer of both compounds. TMFs for diphenhydramine (0.38) and carbamazepine (1.17) indicated neither compound experienced trophic magnification, which suggests that inhalational and not dietary exposure represented the primary route of uptake by fish in this effluent-dependent stream.

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Thèses sur le sujet "Trophic Magnification Factor"

POMA, GIULIA. « Evaluation of bioaccumulation processes of brominated flame retardants in biotic matrices ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2014. http://hdl.handle.net/10281/50902.

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The global reduction in the use of PBDEs and HBCD as flame retardants has opened the way for the introduction of “Novel” BFRs (NBFRs) in place of the banned formulations, indicating those BFRs that are new in the market or newly/recently observed in the environment in respect to PBDEs and HBCD. Consequently, consumption and production of these NBFRs will keep rising, and increasing environmental levels of these chemicals are expected in the near future. Important representatives of this group are decabromodiphenyl ethane (DBDPE), 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE), hexabromobenzene (HBB), and pentabromoethylbenzene (PBEB). In Italy, previous studies have shown that some BFRs (PBDEs) were measured at high concentrations in the Varese province due to the presence of a great number of textile and plastic industries, and particularly in the sediments of Lake Maggiore, where those facilities wastewaters are finally collected mainly through two lake tributaries (Bardello and Boesio). For these reasons, the present thesis has the aim to evaluate the presence, and the potential bioaccumulation and biomagnification processes of six different classes of BFRs (PBDEs, HBCD, DBDPE, BTBPE, HBB and PBEB) in the Lake Maggiore ecosystem, with particular regard to zebra mussels (Dreissena polymorpha), zooplankton, one littoral fish species (common roach - Rutilus rutilus), and two different pelagic species (twaite shad – Alosa agone and European whitefish – Coregonus lavaretus). Finally, the study has also considered the BFR contamination in the lake sediments with the aim of characterizing in detail the possible presence of temporal trends and/or identifying potential sources of contamination. Moreover, it is plausible that the BFR uptake by benthic organisms, followed by fish predation, might be a significant source of bioaccumulation.

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