Comparing Biomarker Responses With Risk
Estimates Used For Decision Analysis
Author(s)
H. Rye, H. Berland & S. Sanni
Abstract
This paper deals with the coupling between biomarker responses and modelling
environmental risks for environmental impacts in the field. The use of filter
feeding scallops and mussels were used in an exposure experiment where
discharges of drill cuttings and mud were taking place. The drilling wastes
revealed biological impacts as physical disturbance affecting energy storing and
reproduction (reduced gonad weight), algae filtration and metabolism. The
changed conditions for the exposed transplanted animals increased the oxidative
stress and revealed significant DNA damages in the assumed highest drilling
waste sited mussels. The biomarker responses were compared to numerical
simulation results where the discharges were mimicked with the numerical
model. An environmental risk calculation was performed for the location of the
largest exposures/responses. The biomarker responses were then compared with
the estimates of the environmental risks for damage on the biota simulated with
the numerical model. The results indicate that the biomarker responses appear to
be sensitive to the concentrations calculated for the actual locations of the biota,
even for low levels of environmental risks simulated for the same site. This
result indicates that the biomarkers may serve as an \“early warning” tool for
revealing potential environmental damage.
Keywords: environment, discharge, offshore, drill cuttings and mud, risk
analysis, biomarkers, numerical modelling.
1 General
The ERMS project (ERMS = Environmental Risk Management System) is aimed
at developing models for prediction of impacts from regular releases to sea
Keywords
environment, discharge, offshore, drill cuttings and mud, risk
analysis, biomarkers, numerical modelling.
Related Book
Other papers in this volume
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