How including ecological realism impacts the assessment of the environmental effect of oil spills at the population level: The application of matrix models for Arctic Calanus species

Pepijn de Vries*, Jacqueline Tamis, Morten Hjorth, Robbert Jak, Stig Falk-Petersen, Martine van den Heuvel-Greve, Chris Klok, Lia Hemerik

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

For oil spill responses, assessment of the potential environmental exposure and impacts of a spill is crucial. Due to a lack of chronic toxicity data, acute data is used together with precautionary assumptions. The effect on the Arctic keystone (copepod) species Calanus hyperboreus and Calanus glacialis populations is compared using two approaches: a precautionary approach where all exposed individuals die above a defined threshold concentration and a refined (full-dose-response) approach. For this purpose a matrix population model parameterised with data from the literature is used. Population effects of continuous exposures with varying durations were modelled on a range of concentrations. Just above the chronic No Observed Effect Concentration (which is field relevant) the estimated population recovery duration of the precautionary approach was more than 300 times that of the refined approach. With increasing exposure concentration and duration, the effect in the refined approach converges to the maximum effect assumed in the precautionary approach.
Original languageEnglish
Pages (from-to)264-274
JournalMarine Environmental Research
Volume141
DOIs
Publication statusPublished - Oct 2018

Keywords

  • matrix models
  • Arctic
  • calanus
  • lc50
  • noec
  • Population dynamics
  • Oil spill

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