Geochronology of Priority Pollutants in a Sedimentation Area of the Rhine River

Quantifying Enhanced Microbial Dehalogenation Impacting the Fate and Transport of Organohalide Mixtures in Contaminated Sediments

“…Nonetheless, dechlorination of weathered PCDDs has been reported in anaerobic microcosms derived from various sources (Barkovskii et al, 1994;Barkovskii and Adriaens, 1996;Albrecht et al, 1999;Yoshida et al, 2005), but limited information is available on the effectiveness of stimulating strategies for such processes. Loss of higher chlorinated PCDD congeners was observed in the recently collected sediments when compared with archived sediment cores from Lake Ketelmeer, the Netherlands (Beurskens et al, 1993). Increasing proportions of lower chlorinated PCDDs corresponding to decreasing proportions of octa-CDD correlated with sediment ages in Queensland sediment, Australia (Gaus et al.…”

Living in highly dynamic polluted river floodplains, do contaminants contribute to population and community effects?

“…At this site more than 10 PhD students and researchers investigated the impact of contaminants at various levels of the ecosystem. The sediments of the embanked floodplains and the lower reaches of the river Rhine have been contaminated during the heavy water pollution in the 1960s and 1970s (Beurskens et al, 1993). Although recently deposited sediments contain considerably lower concentrations of contaminants, many floodplain lake sediments are still historically polluted with nutrients, metals, and hydrophobic organic contaminants (Beurskens et al, 1993).…”

“…The sediments of the embanked floodplains and the lower reaches of the river Rhine have been contaminated during the heavy water pollution in the 1960s and 1970s (Beurskens et al, 1993). Although recently deposited sediments contain considerably lower concentrations of contaminants, many floodplain lake sediments are still historically polluted with nutrients, metals, and hydrophobic organic contaminants (Beurskens et al, 1993). As a result of frequent inundations and (re)deposition of riverine sediments, the contamination has been spread over the terrestrial floodplain soils as well.…”

Species-specific responses of two benthic invertebrates explain their distribution along environmental gradients in freshwater habitats

“…During the heavy water pollution in the River Rhine in the 1960s and 1970s, many contaminants accumulated in the sediments of the embanked floodplains of its lower reaches (Beurskens et al, 1993). Although recently deposited sediments contain considerably lower concentrations of contaminants, many floodplain lake sediments are still historically polluted with nutrients, metals, and hydrophobic organic contaminants (Beurskens et al, 1993).…”

“…Although recently deposited sediments contain considerably lower concentrations of contaminants, many floodplain lake sediments are still historically polluted with nutrients, metals, and hydrophobic organic contaminants (Beurskens et al, 1993). Furthermore, the trophic state of the river Rhine floodplain lakes vary widely, influencing the supply of food (detritus) to the benthic community.…”