The effects of anthropogenic organic matter inputs on stable carbon and nitrogen isotopes in organism from different trophic levels in a southern Mediterranean coastal area

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71 Citazioni (Scopus)

Abstract

Stable isotope ratios were used to determine the impact of anthropogenically derived organic matter from onshore and offshorefish farming and a sewage outfall on organisms at different trophic levels (primary producers and consumers) on the south-eastcoast of Sicily (Italy, Mediterranean). Representative macroalgae and consumers were collected in three sampling locations:“Impact” and two putative “Controls” sited to the north of the impacted location. While δ13C values of both organic matter sourcesand consumers varied little between locations, δ15N spatial variability was higher and δ15N was shown to be a good descriptor oforganic enrichment and uptake of anthropogenically derived material within coastal food webs. Isotopic data were analysed using amultivariate approach. Organic matter sources and benthic components were more sensitive to pollution than nektobenthic speciesand revealed that the effects of anthropogenic activities seem to be detectable over a wide area. The study site is characterised bywide waste dispersal, which brings a reduction in impact in the area directly affected by organic matter inputs and enlarges the areaof moderate impact.
Lingua originaleEnglish
pagine (da-a)723-731
Numero di pagine9
RivistaScience of the Total Environment
Volume368
Stato di pubblicazionePublished - 2006

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

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