Trophic transfer of persistent organic pollutants through a pelagic food web: The case of Lake Como (Northern Italy)
| Autor: | Silvia Quadroni, Michela Mazzoni, Emanuela Boggio, Roberta Bettinetti, Marina Manca, Arianna Bellasi, Roberta Piscia |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Food Chain Environmental Engineering Range (biology) Biomagnification δ 010501 environmental sciences 01 natural sciences Zooplankton DDT Landlocked shad Animals Environmental Chemistry Organic Chemicals Waste Management and Disposal reproductive and urinary physiology delta N-15 0105 earth and related environmental sciences Trophic level Pollutant Alosa agone PCB biology 010604 marine biology & hydrobiology organic chemicals Fishes food and beverages Pelagic zone biology.organism_classification Pollution Food web Lakes stomatognathic diseases Italy Environmental chemistry Environmental science delta C-13 Lake whitefish 13 C 15 N Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Science of the total environment 640-641 (2018): 98–106. doi:10.1016/j.scitotenv.2018.05.307 info:cnr-pdr/source/autori:Mazzoni, Michela; Boggio, Emanuela; Manca, Marina; Piscia, Roberta; Quadroni, Silvia; Bellasi, Arianna; Bettinetti, Roberta/titolo:Trophic transfer of persistent organic pollutants through a pelagic food web: The case of Lake Como (Northern Italy)/doi:10.1016%2Fj.scitotenv.2018.05.307/rivista:Science of the total environment/anno:2018/pagina_da:98/pagina_a:106/intervallo_pagine:98–106/volume:640-641 |
| DOI: | 10.1016/j.scitotenv.2018.05.307 |
| Popis: | Despite DDT and PCB having been banned for about 40 years, they are still detectable in the environment. In the present research we specifically investigated the trophic transfer of these organochlorine contaminants (OC) through a pelagic food web of a deep lake in Northern Italy (Lake Como) over time. Zooplankton and fish were sampled each season of a year and OC concentrations and the carbon and nitrogen isotopic ratios were measured. By using stable isotopes, the direct trophic relationship between pelagic zooplankton and zooplanktivorous fish was confirmed for Alosa agone only in summer. Based on this result, the biomagnification factor normalized on the trophic level (BMFTL) for organic contaminants was calculated. BMFTL values were within the range 0.9-1.9 for DDT isomers and 1.6-4.9 for some PCB congeners (PCB 95, PCB 101, PCB 149, PCB 153, PCB 138 - present both in zooplankton and in fish and representing >60% of the PCB contamination), confirming the biomagnification of these compounds in one of the two zooplanktivorous fish species of the lake. (C) 2018 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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