percent frequency of occurrence of submersed aquatic vegetation

Figure 2. Surveyed and predicted percent frequency of occurrence of submersed aquatic vegetation distribution in the transect sampling backwaters of Pool 8 of the Upper Mississippi River. Survey data were collected using a transect protocol (Yin et al. 2000b). Original data reported percent frequency on the basis of individual backwaters. The survey data used in the figure are the pooled means of all the backwaters on the basis of their respective acreages.