Trophic transfer of cadmium in marine food webs from Western Chilean Patagonia and Antarctica

Winfred Espejo, Janeide de A. Padilha, Karen A. Kidd, Paulo R. Dorneles, Ricardo Barra, Olaf Malm, Gustavo Chiang, José E. Celis

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In aquatic environments, Cd contamination is a great concern because this non-essential metal presents risks both for wildlife and human health. Data about the concentration and transfer of Cd in Patagonian and Antarctic aquatic food webs are crucial for assessing the impacts of this element in pristine ecosystems. Consequently, the concentration of Cd was measured in thirty-two species collected in the 2014 austral summer from two locations of the Western Patagonia and two locations of the Antarctic Peninsula. The main objective of this work was to assess the relationship between Cd concentration and trophic level determined by δ15N. In the studied trophic positions, Cd showed a positive relationship between concentration and trophic level, which suggests biomagnification of this element in macroinvertebrates. However, there was a significant dilution when higher trophic organisms were considered.

Original languageEnglish
Pages (from-to)246-251
Number of pages6
JournalMarine Pollution Bulletin
Volume137
DOIs
Publication statusPublished - Dec 2018
Externally publishedYes

Keywords

  • Antarctica
  • Bioaccumulation
  • Biomagnification
  • Marine food webs
  • Patagonia
  • Trace elements

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

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