In the framework of an ecological risk assessment of seaport sediments for terrestrial ecosystems when deposited in quarries, we simulated the ‘‘ageing’’ of sediments exposed to rain. This experiment highlighted an inflection point at the solid/liquid ratio 1/25, after which the extraction of pollutants increases moderately. The raw sediments studied inhibited the germination of Lolium …
This paper explores a paradox in the Australian labour market namely that ageing workforces and significant skills shortages in certain sectors are juxtaposed with rising youth unemployment. According to one dominant view these two social issues are interrelated with young workers being ‘crowded out’ by their older colleagues who are delaying retirement. In this study, we consider the stren…