Metal Toxicity to Fish, Aquatic Invertebrates, and Birds
In-situ evaluation of 24-hour metal cycling in photosynthetic biofilm in a mining-impacted stream in Montana. Abt Associates staff have more than 20 years of experience investigating the toxicity of metals to fish, aquatic invertebrates, birds, and other wildlife.
This includes the fate and transport of metals in impacted environments, biogeochemical influences on metal concentrations, and daily metal cycling in aquatic environments. Recent research includes laboratory investigations into the toxicity of copper in the Bristol Bay watershed to salmonids and the protectiveness of water quality criteria in these areas in regards to lethal and sub-lethal effects.
Our research also includes laboratory and field tests designed to determine the fate and transport as well as the waterborne and dietary toxicity and associated modes of action of several metals and metalloids associated with mining activities including arsenic, cadmium, cobalt, copper, lead, nickel and zinc. Additionally, we have conducted associated research on the influence of water quality – including anions, cations, alkalinity, pH, and organic carbon – on metal toxicity as well as evaluated various regulatory guidelines and approaches to assessing toxicity under a range of environmental and chemical conditions.