b) Which species in your food web module might you expect to be especially prone to (i) bioaccumulation and/or (ii) biomagnification of heavy-metal pollution in marine sediments, and why?

Mercury compounds, including methyl-mercury (MeHg), are particularly toxic and subject to bioaccumulation as they have a strong affinity for sulfhydryl groups \cite{Stadnicka_2012}. The rate of bioaccumulation of mercury has been shown to be predominantly driven by the interaction between growth rate and rate of consumption (i), and the concentrations of mercury compounds in prey (ii) \cite{Ward2010}
i) We predict that fish with a higher growth efficiency (ie higher fraction of food mass converted to body mass) will be able to dilute absorbed MeHg in their increased biomass; hence fish with poor growth efficiency as particularly prone to bioaccumulation within a trophic level. Growth efficiency can be estimated mathematically by the size ratio between the prey and the predator; the rarity of the prey and maximum size \cite{Kerr_1971,Hamre2014}. For these reasons I would suggest  the American plaice is particularly susceptible to intra-trophic bioaccumulation, as it has the 2nd largest maximum size and it's growth rate levels off soon after maturity, radically reducing growth efficiency,  leading to less MeHg dilution, leading to increased bioaccumulation \cite{HEATH_2005}.