## 3 Results
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Response Range**} & **Natural** & & **BSM** & **Threshold** \\  & **Mean (5-95 th)** & & **High Residency** & **Concentration** \\ \hline \multicolumn{4}{c}{Elements 1} \\ \hline Ag & 0.08 (0.04-0.11) & 0.18 (0.05–0.5) 1 & 0.21 (0.06–0.7) 1 & 0.12 \\ \hline Al & 75 (22–123) & 82 (25–171) & 127 (65–251) 2 & 102 \\ \hline Ba & 0.6 (0.3–1) & 0.64 (0.3–1.2) & 1 (0.57–2) 2 & 0.77 \\ \hline Be & 0.007 (0.001–0.01) & 0.007 (0.001–0.01) & 0.01 (0.004–0.02) 2 & 0.008 \\ \hline Cd & 0.067 (0.04–0.085) & 0.08 (0.05–0.11) 1 & 0.1 (0.077–0.14) 2 & 0.08 \\ \hline Ce & 0.69 (0.12–1.29) & 0.87 (0.25–2) & 1.7 (1–3.1) 2 & 1.08 \\ \hline Co & 0.15 (0.05–0.26) & 0.2 (0.05–0.5) & 0.3 (0.2–0.6) 2 & 0.07 \\ \hline Cr & 4 (0.23–8.2) & 6.3 (0.4–20) 1 & 6.7 (2–14) 1 & 5 \\ \hline Ca & 459 (356–620) & 535 (344–973) 1 & 461 (378–580) & 495 \\ \hline Gd & 0.05 (0.02–0.08) & 0.05 (0.02–0.14) & 0.09 (0.06–0.19) 2 & 0.07 \\ \hline Ga & 0.04 (0.01–0.09) & 0.04 (0.01–0.14) & 0.08 (0.04–0.19) 2 & 0.06 \\ \hline Cu & 1.8 (1.2–2.7) & 1.9 (1–3) & 2.3 (1.5–3.2) 2 & 2 \\ \hline Fe & 214 (45–511) & 234 (52–754) & 357 (134–800) 20.67 & 276 \\ \hline La & 0.4 (0.1–0.8) & 0.55 (0.1–1.1) & 1.1 (0.4–2) 2 & 0.7 \\ \hline Pb & 0.06 (0.02–0.14) & 0.07 (0.02–0.14) & 0.1 (0.05–0.24) 2 & 0.08 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Change in tissue levels of elements in Mya arenaria clam populations. In the attempt to determine the biological impacts of anthropogenic activities and pollution on local clam populations at polluted sites and to assess an area of high residency of the SLE beluga whales, we determined the natural variation of the reference site (Table 2). This was achieved by using data from five consecutive years to determine the mean with the 5 th and 95 th percentiles. Because of the high number of data, we selected the \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Response Range**} & \multirow{2}{*}{\
\begin{tabular}{c} **Natural** \\ **Mean (5-95 th)** \\ \end{tabular} } & \multirow{2}{*}{**Polluted**} & \multirow{2}{*}{**(SLE Beluga Area of High Residency)**} & \multirow{2}{*}{
\begin{tabular}{c} **Threshold** \\ **Concentration** \\ \end{tabular} } \\ \hline Mg & 681 (475–830) & 655 (460–834) & 500 (342-688) 2 & 583 \\ \hline Mn & 2.4 (0.6–4.4) & 6 (1.1–44) 1 & 6.6 (2.2–17) 1 & 3.8 \\ \hline Mo & 0.59 (0.16–0.98) & 0.95 (0.14–2.6) 1 & 0.78 (0.28–1.9) & 0.75 \\ \hline Hg & 0.02 (0.008–0.04) & 0.02 (0.007–0.04) & 0.05 (0.03–0.08) 2 & 0.03 \\ \hline Nd & 0.47 (0.11–0.97) & 0.78 (0.14–2.6) 1 & 0.96 (0.4–3.1) 1 & 0.67 \\ \hline Ni & 0.33 (0.12–0.54) & 0.39 (0.14–0.9) & 0.73 (0.46–1.37) 1 & 0.49 \\ \hline Nb & 2.5 (0.19–5.3) & 4 (0.3–12.4) 1 & 4.3 (1.3–8.9) 1 & 3 \\ \hline P & 0.02 (0.008–0.04) & 0.02 (0.009–0.04) & 0.03 (0.01–0.06) 1 & 0.025 \\ \hline K & 1050 (821–1384) & 978 (796–1310) 1 & 937 (820–1051) 1 & 1013 \\ \hline Sm & 0.1 (0.03–0.19) & 0.12 (0.02–0.24) 1 & 0.2 (0.15–0.34) 2 & 0.11 \\ \hline Sn & 0.03 (0.009–0.05) & 0.04 (0.008–0.07) & 0.05 (0.02–0.09) 2 & 0.04 \\ \hline U & 0.03 (0.01–0.03) & 0.03 (0.01–0.05) & 0.04 (0.02–0.07) 2 & 0.04 \\ \hline V & 0.04 (0.02–0.12) & 0.25 (0.02–0.8) 1 & 0.8 (0.05–1.4) 2 & 0.1 \\ \hline Y & 0.03 (0.004–0.05) & 0.03 (0.005–0.05) & 0.04 (0.01–0.06) 2 & 0.035 \\ \hline Zn & 0.16 (0.07–0.3) & 0.2 (0.07–0.51) & 0.3 (0.2–0.65) 2 & 0.22 \\ \hline Zr & 12.8 (9.9–17.1) & 13 (9.7–16.6) & 17 (10.8–25.5) 2 & 15 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: _Cont._