## 3 Results
### Land Use and Geology  
Agriculture was the most abundant land use category, comprising 49% of the total area upstream of sample sites, followed by evergreen forest (22%) and wetlands (22%; Table 4; Figure 3). Deciduous forest was the least abundant land use category, making up only 0.6 percent of the total area upstream of sample sites. Of the geologic types, High Terrace was the most extensive, comprising 67% of the total sample area on the Louisiana side of the river. Deweyville Terrace was the least abundant type, making up 0.2% of the total sample area. Pascagoula Hattiesburg geology was the most extensive geologic type on the Mississippi side of the river, making up 73% of the total area sampled, with coastal deposits being the least extensive at 1.6%.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline
**Variable** & **Mean** & **Maximum** & **Minimum** \\ \hline
**Land Cover Types** & & & \\ Developed & 1.69\% (0.00) & 3.44\% & 0.58\% \\ Agriculture & 50.21\% (0.02) & 63.18\% & 23.12\% \\ Deciduous Forest & 0.64\% (0.00) & 1.71\% & 0.14\% \\ Evergreen Forest & 20.98\% (0.01) & 36.79\% & 9.09\% \\ Mixed Forest & 3.90\% (0.00) & 8.07\% & 0.79\% \\ Wetland & 21.56\% (0.02) & 53.40\% & 10.02\% \\ Barren & 1.02\% (0.00) & 8.09\% & 0.16\% \\ \hline \hline \end{tabular}
\end{table}
Table 4: Maximum, minimum, and means (standard error; SE) percent land cover above each mussel sampling site in Pearl River tributary streams sampled in 2015 and 2016.  
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline  & & & & & & & & \\ \hline
**Site** & **16** & **8** & **4** & **2** & **1** & **0.5** & **0.25** & **0.12** \\ \hline Big Trib & 99.9 & 99.9 & 99.3 & 98.1 & 90.4 & 72.3 & 14.2 & 0.6 \\ Adam’s Creek & 99.2 & 98.7 & 97.6 & 95.6 & 93.0 & 62.2 & 10.7 & 0.4 \\ Ben’s Creek & 99.5 & 99.1 & 98.1 & 96.1 & 92.3 & 44.9 & 8.1 & 0.2 \\ Bogue Lusa Creek & 99.8 & 99.7 & 99.5 & 98.7 & 95.4 & 35.3 & 4.9 & 0.2 \\ Crains Creek & 99.2 & 97.6 & 96.5 & 95.1 & 92.7 & 32.6 & 2.9 & \textless{}0.1 \\ Deer Lick Creek & 88.6 & 74.3 & 65.9 & 61.0 & 56.2 & 27.4 & 2.3 & 0.1 \\ Hays Creek & 81.7 & 57.9 & 41.7 & 30.7 & 25.5 & 14.7 & 4.1 & 0.2 \\ Hays Creek Site 2 & 91.5 & 86.3 & 83.6 & 81.8 & 78.1 & 18.4 & 1.7 & \textless{}0.1 \\ House Creek & 99.5 & 99.4 & 99.2 & 98.5 & 97.6 & 57.4 & 10.2 & 0.2 \\ Lawrence Creek & 77.0 & 65.0 & 55.8 & 50.0 & 46.1 & 14.4 & 2.4 & \textless{}0.1 \\ Lawrence Creek Site 2 & 100.0 & 99.9 & 99.9 & 99.9 & 99.7 & 20.4 & 2.0 & \textless{}0.1 \\ Mill Creek & 82.8 & 58.3 & 45.1 & 38.5 & 35.0 & 21.5 & 2.7 & \textless{}0.1 \\ Miller Creek & 99.2 & 99.1 & 98.8 & 98.3 & 97.2 & 29.9 & 3.1 & \textless{}0.1 \\ Peter’s Creek & 99.6 & 99.1 & 97.5 & 96.4 & 94.7 & 29.6 & 7.9 & 0.4 \\ Peter’s Cutoff & 98.8 & 98.1 & 95.6 & 91.4 & 87.4 & 52.0 & 18.4 & 0.7 \\ Pushepatapa Creek & 99.8 & 99.3 & 98.3 & 95.9 & 90.8 & 41.5 & 9.2 & 0.2 \\ Pushepatapa Site 2 & 90.1 & 73.7 & 61.5 & 54.3 & 43.9 & 9.3 & 1.7 & \textless{}0.1 \\ Sal’s Branch & 88.9 & 59.1 & 36.6 & 23.5 & 17.5 & 6.2 & 1.0 & \textless{}0.1 \\ Silver Creek & 72.7 & 61.8 & 57.5 & 52.4 & 35.6 & 4.7 & 1.0 & \textless{}0.1 \\ Silver Springs Creek & 94.6 & 87.2 & 83.8 & 82.1 & 73.0 & 41.8 & 12.8 & 0.3 \\ Stubbs Creek & 95.2 & 85.9 & 74.0 & 60.2 & 48.1 & 22.5 & 2.5 & 0.1 \\ Talisheek Creek & 99.6 & 99.5 & 99.4 & 99.0 & 96.4 & 48.9 & 5.0 & 0.1 \\ Talley’s Creek & 91.6 & 67.1 & 54.6 & 47.6 & 44.7 & 38.5 & 5.5 & 0.1 \\ Thomas Creek & 96.3 & 93.9 & 90.1 & 87.1 & 78.4 & 49.1 & 6.5 & 0.1 \\ West Holobichto Creek & 100.0 & 99.9 & 99.8 & 99.3 & 97.6 & 53.8 & 5.6 & 0.1 \\ West Holobichto Site 2 & 99.7 & 98.5 & 95.7 & 92.5 & 88.5 & 39.6 & 3.9 & 0.1 \\ White Sands Creek & 97.76 & 94.31 & 91.30 & 88.6 & 84.4 & 46.8 & 5.7 & 0.1 \\ \hline \hline \end{tabular}
\end{table}
Table 3: Percentage of substrate less than each size class in Pearl River tributary streams sampled in 2015 and 2016.