Activated carbon (AC) amendment is a recently developed sediment remediation method. The strong hydrophobic organic contaminant sorption efficiency of AC has been shown in several studies, but effects on benthic organisms require more investigation. The AC induced effects on egestion rate, growth and reproduction of Lumbriculus variegatus were studied by applying bituminous coal based AC in three different particle size fractions, namely <63 μm (90%, AC(p)), 63-200 μm (AC(m)) and 1000 μm (AC(g)), to natural uncontaminated (HS) and artificial sediment (AS). Egestion rate, growth and reproduction decreased with increasing AC concentration and finer AC particle fractions, effects being stronger on HS than on AS sediment. Lipid content in AS was reduced already at the lowest AC doses applied (AC(p) and AC(m) 0.05%, AC(g) 0.25%). In addition, hormesis-like response was observed in growth (AS) and reproduction (AS, HS) indicating that AC may disturb organisms even at very low doses. Potential ecological effects need to be further evaluated in an amendment- and site-specific manner.

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Since the first pollen analyses from core material in the 1960s, the limnotelmatic sequence of Tenaghi Philippon, located within the subsurface of the Drama Basin of NE Greece, has been recognized as an exceptional archive of terrestrial climate and ecosystem dynamics for the Quaternary in Europe. The polleniferous sequence covers the last ~1.35 Ma continuously, spanning at least 19 consecutive glacial-interglacial cycles. Analyses of Tenaghi Philippon as based on the drillcores from the 1960s were restricted to a millennial-scale resolution. Because the original cores have deteriorated, the archive's potential for analyzing abrupt (i. e., centennial-to decadal-scale) climate and ecosystem change has long remained unexplored. Therefore new drilling campaigns were carried out in 2005 and 2009 to recover the 0-60 m and 50-200 m depth intervals of the archive, respectively. The new cores (recovery: 97.8 and 99.0%, respectively) allow characterization of the evolution of abrupt climate and ecosystem variability across the full range of climatic

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Development of a petrographic classification of fly-ash components from coal combustion and co-combustion. (An ICCP Classification System, Fly-Ash Working Group-Commission III.

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