Further Evaluation of Diatom Periphyton as Indicators of Cultivation and Grazing Impairment in Montana Wetlands

Table 1. June water chemistry values for Nine Pipe and Ovando Valley wetland study sites. Data from Borth (1998). Table 2. July water chemistry values for Nine Pipe and Ovando Valley wetland study sites. Data from Borth (1998). Table 3. August water chemistry values for Nine Pipe and Ovando Valley wetland study sites. Data from Borth (1998). Table 4. June, July and August average water chemistry values for Nine Pipe and Ovando Valley wetland study sites. Data from Borth (1998). Table 5. Sediment chemistry, percent substrate, water depth, percent cover type, and groundwater category for Nine Pipe and Ovando Valley wetland study sites. Data from Borth (1998). 1 Groundwater types; 1= recharge, 2 = discharge. Table 6. Correlation matrix of all water chemistry variables used in this study (Table 4). Table 7. Correlation of water chemistry variables with PCA axes, all Nine Pipe and Ovando Valley sites. Table 8. Correlation of water chemistry variables with PCA axes, all Nine Pipe sites. Table 9. Correlation of water chemistry variables with PCA axes, all Ovando Valley sites. Table 10. Correlation of physical and sediment chemistry variables with PCA axes, all Nine Pipe and Ovando Valley sites. Table 11. Correlation of physical and sediment chemistry variables with PCA axes, all Ovando Valley sites. Table 12. Correlation of physical and sediment chemistry variables with PCA axes, all Nine Pipe sites. Table 13. Correlation matrices of selected water chemistry, sediment chemistry, other environmental variables, and species and environmental axes. Results based on RDA analysis of data for Nine Pipe and Ovando Valley wetland sites, combined and alone. Selected values are those that explained most of the variation in the diatom assemblage data set. Figure 1. Principal Components Analysis (PCA) of all average water chemistry characteristics (Table 4) for all Nine Pipe and Ovando Valley wetland sites. Impaired sites are shown as black dots. Figure 2. Principal Components Analysis (PCA) of all average water chemistry characteristics (Table 4) for all Nine Pipe wetland sites. Impaired sites are shown as black dots. Figure 3. Principal Components Analysis (PCA) of all average water chemistry characteristics (Table 4) for all Ovando Valley wetland sites. Impaired sites are shown as black dots. Figure 4. Principal Components Analysis (PCA) of sediment chemistry and physical characteristics (Table 5) for all Nine Pipe and Ovando Valley wetland sites. Impaired sites are shown as black dots. Figure 5. Principal Components Analysis (PCA) of sediment …