In lowland areas of the Netherlands, any peat sediments will gradually become enriched with anthr... more In lowland areas of the Netherlands, any peat sediments will gradually become enriched with anthropogenically derived Polycyclic Aromatic Hydrocarbons. Due to Dutch policy standards these (anaerobic) sediments are not allowed to be dredged and placed onto land. Under aerobic conditions, however, biodegradation of PAH is greatly enhanced. This degradation is further stimulated by colonisation of the sediments by earthworms. Laboratory experiments show that although earthworms do not avoid PAH-contaminated sediment, their burrowing-activity is reduced. Furthermore, these sediments have no significant ecotoxicological impacts on earthworms. Experimental introduction of earthworms into PAH-contaminated OECD-soil will result in a decrease in overall PAH content. In field surveys no significant differences in earthworm numbers between locations with fresh and old sediment could be found. It is concluded that dredging of PAH-contaminated sediment poses a very limited environmental threat, ...
MSFD chemical compounds assessment precautionary principle adaptive management a b s t r a c t Po... more MSFD chemical compounds assessment precautionary principle adaptive management a b s t r a c t Policymakers and managers have a very different philosophy and approach to achieving healthy coastal and marine ecosystems than scientists. In this paper we discuss the evolution of the assessment of the chemical status in the aquatic environment and the growing rift between the political intention (precautionary principle) and scientific developments (adaptive and evidence-based management) in the context of the pitfalls and practicalities confronting the current Marine Strategy Framework Directive (MSFD).
... The islands of Bonaire, Sint Eustatius and Saba together known as the BES (&a... more ... The islands of Bonaire, Sint Eustatius and Saba together known as the BES ('Bijzondere Eilandelijke Status') islands, will become more closely tied to the Netherlands. They will become part of the Netherlands and have the status of 'special municipality'. ... Eustatius and St. ...
In lowland areas of the Netherlands, any peat sediments will gradually become enriched with anthr... more In lowland areas of the Netherlands, any peat sediments will gradually become enriched with anthropogenically derived Polycyclic Aromatic Hydrocarbons. Due to Dutch policy standards these (anaerobic) sediments are not allowed to be dredged and placed onto land. Under aerobic conditions, however, biodegradation of PAH is greatly enhanced. This degradation is further stimulated by colonisation of the sediments by earthworms. Laboratory experiments show that although earthworms do not avoid PAH-contaminated sediment, their burrowing-activity is reduced. Furthermore, these sediments have no significant ecotoxicological impacts on earthworms. Experimental introduction of earthworms into PAH-contaminated OECD-soil will result in a decrease in overall PAH content. In field surveys no significant differences in earthworm numbers between locations with fresh and old sediment could be found. It is concluded that dredging of PAH-contaminated sediment poses a very limited environmental threat, ...
MSFD chemical compounds assessment precautionary principle adaptive management a b s t r a c t Po... more MSFD chemical compounds assessment precautionary principle adaptive management a b s t r a c t Policymakers and managers have a very different philosophy and approach to achieving healthy coastal and marine ecosystems than scientists. In this paper we discuss the evolution of the assessment of the chemical status in the aquatic environment and the growing rift between the political intention (precautionary principle) and scientific developments (adaptive and evidence-based management) in the context of the pitfalls and practicalities confronting the current Marine Strategy Framework Directive (MSFD).
... The islands of Bonaire, Sint Eustatius and Saba together known as the BES (&a... more ... The islands of Bonaire, Sint Eustatius and Saba together known as the BES ('Bijzondere Eilandelijke Status') islands, will become more closely tied to the Netherlands. They will become part of the Netherlands and have the status of 'special municipality'. ... Eustatius and St. ...
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Papers by D. Slijkerman