Percent Fine Sediment and Incubation Productivity

The functional relationship used to calculate incubation productivity from percent fine sediment. Curve recreated from Jensen et al. (2009).
Jensen et al. (2009) summarized published values of incubation productivity for four salmonid species (Chinook, coho, chum, and steelhead) and created a logistic model to relate percent fines to percent incubation productivity. Jensen et al. (2009) presented data for all four salmonid species, but there was significant overlap among species and there appeared to be little justification for using different functional relationships for each species. Therefore, this function uses estimates for an all-species relationship.