A medium sized lake supports a small population of osprey (OSPR; bird of prey). An OSPR, which weighs on average 1.2 kg and has a lifespan of 9 years in the wild, eats 2 striped bass (Morone saxatilis) a week; the bass weigh on average 0.9 kg each and they live for ~3 yrs in the wild. The bass feed on caddisfly larvae (on average 1.4 kg of caddisfly larvae eaten in a year), which weigh 0.5 g (caddisfly; which they don’t but let’s just say they do). The caddisfly larvae, in turn, feed on aquatic plant material; they eat on average 16 g of plant material in their lifetime. The lake is contaminated with mercury. The aquatic plants in the lake take up the mercury at a concentration of 0.0007 mg DDT/g plant. Assume this is a worst case situation where all of the DDT consumed within this food chain stays within the body of the consumer. What is the concentration of DDT consumed by the Caddisfly Larvae? Show your work. What is the concentration of DDT consumed by the Striped Bass? Show your work. What is the concentration of DDT consumed by the Eagle? Show your work.'
