The effect of
Many papers have been written on
DOC. Here, we discuss only those of
relevance to lake trout and other biota of
DOC includes many substances, of
structure. Some molecules are small, in a size range ideal for uptake by organisms. However, colored allochthonous DOC is composed mostly of
humic and fulvic acids and other large, charged molecules, which tend to combine with other charged chemicals, including trace metals, nutrients, and organic contaminants, to form stable colloids. DOC prevents these chemicals from partic- ipating in biological and chemical
reactions as if they were in truly dissolved form but also retards further coagulation, inhibiting their removal to the sediments (Weilenmann et al., 1989).