Authors: Schaanning, M.T.; Allan, I.
Reference: Schaanning, M.T.; Allan, I. (2012) Field experiment on thin-layer capping in Ormefjorden and Eidangerfjorden, Telemark Functional response and bioavailability of dioxins 2009- 2011. NIVA 6285-2012
Summary: Laboratory boxcosms and field studies showed that only thin-caps with activated carbon reduced long-term flux of contamination. Thin layer capping in general did not greatly change vertical profiles of oxygen, redox potential, or ammonia and nitrate. Thin-capping with dredged clay material caused very little biogeochemical changes. Limestone caps actually decreased the flux of phosphate. This suggests that thin layer capping will have minimal secondary ecosystem effects in deep water habitats.
What You Will Find Here: Summary p. 5, Table 1 field names and treatments p. 9, Map p. 10, Species dogwhelk and polychaete p. 13, Biogeochemical fluxes p. 15-18, Cap Re-contamination p. 18-21, Contaminant bioavailability Table 4 Figure 14 p. 25-27, Discussion p. 28.