Vertical Patterns in Lake Sturgeon (Acipenser fulvescens) Larval Drift within Two Rivers Directly Connected to Green Bay, Lake Michigan

Figure 3

The number of larval lake sturgeon observed while drifting from upstream spawning sites in the Menominee River during the spring of 2013. Box plots illustrate the median and interquartile ranges of the data, while the jittered dots show the observed larval lake sturgeon catch within the 4 vertical nets set in 4 different locations. The y-axis is presented in the log scale adhering to the statistical analysis used and the non-normal (Poisson) distribution of catch. Larvae were collected using 4 nets specifically designed to sample the entire water column. Nets were deployed across the rivers’ cross section, and nets 2 and 3 sampled the center of the river channel. Section 1 was the net bottom, and section 7 was at the water surface.