Thesiss

Signal crayfish are an internationally widespread invasive species that can have important detrimental ecological impacts. This thesis aims to determine whether signal crayfish have the potential to also impact the physical environment in rivers. A series of experiments were und…

Many freshwater ecosystems sustain several invasive species. Here I examine multiple invasions in two highly invaded and well catalogued catchments; Lake Naivasha, Kenya and River Thames, England. New metrics, derived from stable isotope analysis, are used to provide measures of…

Aluminium is the third most abundant element in the lithosphere and yet no biological function has been elucidated. The ubiquity and pH-dependent chemical speciation of aluminium provides multiple routes of exposure to organisms, inducing neurotoxicity, tissue necrosis and organ…