TABLE 1 in Coexistence of two newt species in a transition zone of range overlap

<p>TABLE 1 Numbers of adult <i>Lissotriton</i> newts observed over 105 ponds in the western part of the department Pas de Calais in the 1974 to 2021 period. <i>F</i> v = Lv /(Lh + Lv)</p><table><tbody><tr><th>Pond</th><th>Coordinates</th><th>Sample size for species</th><th><i>F</i> v</th></tr><tr><th><b>number</b></th><th>Northern latitude</th><th>Eastern longitude</th><th>Lissotriton <i>helveticus</i> (N)</th><th><i>Lissotriton</i> <b><i>vulgaris</i> (N)</b></th></tr></tbody><tbody><tr><th>1</th><td>50.770</td><td>1.772</td><td>21</td><td>1</td><td>0.05</td></tr><tr><th>2</th><td>50.871</td><td>1.617</td><td>194</td><td>175</td><td>0.47</td></tr><tr><th>3</th><td>50.902</td><td>1.679</td><td>223</td><td>9</td><td>0.04</td></tr><tr><th>4</th><td>50.901</td><td>1.678</td><td>126</td><td>7</td><td>0.05</td></tr><tr><th>5</th><td>50.870</td><td>1.606</td><td>580</td><td>24</td><td>0.04</td></tr><tr><th>6</th><td>50.902</td><td>1.680</td><td>233</td><td>6</td><td>0.03</td></tr><tr><th>7</th><td>50.869</td><td>1.608</td><td>34</td><td>1</td><td>0.03</td></tr><tr><th>8</th><td>50.869</td><td>1.609</td><td>20</td><td>0</td><td>0.00</td></tr><tr><th>9</th><td>50.875</td><td>1.656</td><td>26</td><td>2</td><td>0.07</td></tr><tr><th>10</th><td>50.855</td><td>1.666</td><td>410</td><td>149</td><td>0.27</td></tr><tr><th>11</th><td>50.854</td><td>1.664</td><td>188</td><td>96</td><td>0.34</td></tr><tr><th>12</th><td>50.839</td><td>1.672</td><td>108</td><td>10</td><td>0.08</td></tr><tr><th>13</th><td>50.837</td><td>1.675</td><td>29</td><td>5</td><td>0.15</td></tr><tr><th>14</th><td>50.820</td><td>1.631</td><td>65</td><td>41</td><td>0.39</td></tr><tr><th>15</th><td>50.858</td><td>1.630</td><td>26</td><td>6</td><td>0.19</td></tr><tr><th>16</th><td>50.861</td><td>1.610</td><td>92</td><td>34</td><td>0.27</td></tr><tr><th>17</th><td>50.860</td><td>1.606</td><td>43</td><td>0</td><td>0.00</td></tr><tr><th>18</th><td>50.849</td><td>1.597</td><td>186</td><td>87</td><td>0.32</td></tr><tr><th>19</th><td>50.853</td><td>1.595</td><td>27</td><td>11</td><td>0.29</td></tr><tr><th>20</th><td>50.866</td><td>1.608</td><td>107</td><td>46</td><td>0.30</td></tr><tr><th>21</th><td>50.844</td><td>1.590</td><td>104</td><td>76</td><td>0.42</td></tr><tr><th>22</th><td>50.844</td><td>1.598</td><td>26</td><td>16</td><td>0.38</td></tr><tr><th>23</th><td>50.844</td><td>1.599</td><td>83</td><td>66</td><td>0.44</td></tr><tr><th>24</th><td>50.845</td><td>1.599</td><td>812</td><td>182</td><td>0.18</td></tr><tr><th>25</th><td>50.845</td><td>1.599</td><td>45</td><td>16</td><td>0.26</td></tr><tr><th>26</th><td>50.845</td><td>1.599</td><td>53</td><td>40</td><td>0.43</td></tr><tr><th>27</th><td>50.845</td><td>1.599</td><td>86</td><td>35</td><td>0.29</td></tr><tr><th>28</th><td>50.845</td><td>1.600</td><td>41</td><td>16</td><td>0.28</td></tr><tr><th>29</th><td>50.845</td><td>1.600</td><td>79</td><td>33</td><td>0.29</td></tr><tr><th>30</th><td>50.845</td><td>1.600</td><td>70</td><td>17</td><td>0.20</td></tr><tr><th>31</th><td>50.845</td><td>1.601</td><td>51</td><td>45</td><td>0.47</td></tr><tr><th>32</th><td>50.846</td><td>1.600</td><td>1712</td><td>450</td><td>0.21</td></tr><tr><th>33</th><td>50.845</td><td>1.600</td><td>576</td><td>152</td><td>0.21</td></tr><tr><th>34</th><td>50.846</td><td>1.603</td><td>10</td><td>10</td><td>0.50</td></tr><tr><th>35</th><td>50.849</td><td>1.598</td><td>4</td><td>6</td><td>0.60</td></tr><tr><th>36</th><td>50.861</td><td>1.591</td><td>31</td><td>61</td><td>0.66</td></tr><tr><th>37</th><td>50.860</td><td>1.586</td><td>113</td><td>244</td><td>0.68</td></tr><tr><th>38</th><td>50.860</td><td>1.583</td><td>72</td><td>347</td><td>0.83</td></tr><tr><th>39</th><td>50.857</td><td>1.664</td><td>36</td><td>2</td><td>0.05</td></tr><tr><th>40</th><td>50.864</td><td>1.616</td><td>18</td><td>4</td><td>0.18</td></tr><tr><th>41</th><td>50.865</td><td>1.602</td><td>82</td><td>24</td><td>0.23</td></tr><tr><th>42</th><td>50.855</td><td>1.664</td><td>112</td><td>35</td><td>0.24</td></tr><tr><th>43</th><td>50.832</td><td>1.626</td><td>19</td><td>12</td><td>0.39</td></tr><tr><th>44</th><td>50.844</td><td>1.593</td><td>19</td><td>12</td><td>0.39</td></tr><tr><th>45</th><td>50.850</td><td>1.582</td><td>1</td><td>10</td><td>0.91</td></tr><tr><th>46</th><td>50.819</td><td>1.611</td><td>17</td><td>4</td><td>0.19</td></tr><tr><th>47</th><td>50.818</td><td>1.608</td><td>35</td><td>35</td><td>0.50</td></tr><tr><th>48</th><td>50.822</td><td>1.600</td><td>11</td><td>3</td><td>0.21</td></tr><tr><th>49</th><td>50.823</td><td>1.602</td><td>618</td><td>159</td><td>0.20</td></tr><tr><th>50</th><td>50.821</td><td>1.619</td><td>14</td><td>10</td><td>0.42</td></tr><tr><th>51</th><td>50.823</td><td>1.623</td><td>25</td><td>10</td><td>0.29</td></tr><tr><th>52</th><td>50.819</td><td>1.617</td><td>45</td><td>7</td><td>0.13</td></tr><tr><th>53</th><td>50.820</td><td>1.598</td><td>32</td><td>15</td><td>0.32</td></tr><tr><th>54</th><td>50.821</td><td>1.599</td><td>31</td><td>10</td><td>0.24</td></tr><tr><th>55</th><td>50.797</td><td>1.626</td><td>24</td><td>68</td><td>0.74</td></tr><tr><th>56</th><td>50.795</td><td>1.627</td><td>3</td><td>11</td><td>0.79</td></tr><tr><th>57</th><td>50.800</td><td>1.623</td><td>14</td><td>27</td><td>0.66</td></tr><tr><th>58</th><td>50.799</td><td>1.622</td><td>0</td><td>11</td><td>1.00</td></tr><tr><th>59</th><td>50.784</td><td>1.617</td><td>16</td><td>33</td><td>0.67</td></tr><tr><th>60</th><td>50.797</td><td>1.619</td><td>4</td><td>66</td><td>0.94</td></tr><tr><th>61</th><td>50.797</td><td>1.621</td><td>3</td><td>34</td><td>0.92</td></tr><tr><th>62</th><td>50.798</td><td>1.613</td><td>17</td><td>295</td><td>0.95</td></tr><tr><th>63</th><td>50.791</td><td>1.621</td><td>21</td><td>110</td><td>0.84</td></tr><tr><th>64</th><td>50.799</td><td>1.615</td><td>5</td><td>12</td><td>0.71</td></tr><tr><th>65</th><td>50.797</td><td>1.616</td><td>0</td><td>12</td><td>1.00</td></tr><tr><th>66</th><td>50.799</td><td>1.618</td><td>0</td><td>131</td><td>1.00</td></tr><tr><th>67</th><td>50.797</td><td>1.624</td><td>1</td><td>15</td><td>0.94</td></tr><tr><th>68</th><td>50.799</td><td>1.628</td><td>2</td><td>18</td><td>0.90</td></tr><tr><th>69</th><td>50.793</td><td>1.625</td><td>7</td><td>6</td><td>0.46</td></tr><tr><th>70</th><td>50.791</td><td>1.624</td><td>9</td><td>3</td><td>0.25</td></tr><tr><th>71</th><td>50.808</td><td>1.667</td><td>8</td><td>14</td><td>0.64</td></tr><tr><th>72</th><td>50.826</td><td>1.668</td><td>19</td><td>4</td><td>0.17</td></tr><tr><th>73</th><td>50.851</td><td>1.723</td><td>148</td><td>2</td><td>0.01</td></tr><tr><th>74</th><td>50.855</td><td>1.700</td><td>68</td><td>1</td><td>0.01</td></tr><tr><th>75</th><td>50.863</td><td>1.692</td><td>405</td><td>1</td><td>0.00</td></tr><tr><th>76</th><td>50.823</td><td>1.722</td><td>118</td><td>27</td><td>0.19</td></tr><tr><th>77</th><td>50.822</td><td>1.722</td><td>302</td><td>302</td><td>0.50</td></tr><tr><th>78</th><td>50.822</td><td>1.721</td><td>91</td><td>78</td><td>0.46</td></tr><tr><th>79</th><td>50.851</td><td>1.759</td><td>36</td><td>4</td><td>0.10</td></tr><tr><th>80</th><td>50.850</td><td>1.758</td><td>66</td><td>10</td><td>0.13</td></tr><tr><th>81</th><td>50.854</td><td>1.701</td><td>22</td><td>0</td><td>0.00</td></tr><tr><th>82</th><td>50.819</td><td>1.718</td><td>302</td><td>218</td><td>0.42</td></tr><tr><th>83</th><td>50.805</td><td>1.699</td><td>77</td><td>0</td><td>0.00</td></tr><tr><th>84</th><td>50.805</td><td>1.700</td><td>28</td><td>0</td><td>0.00</td></tr><tr><th>85</th><td>50.831</td><td>1.821</td><td>20</td><td>0</td><td>0.00</td></tr><tr><th>86</th><td>50.844</td><td>1.783</td><td>42</td><td>27</td><td>0.39</td></tr><tr><th>87</th><td>50.833</td><td>1.775</td><td>50</td><td>14</td><td>0.22</td></tr><tr><th>88</th><td>50.833</td><td>1.778</td><td>558</td><td>46</td><td>0.08</td></tr><tr><th>89</th><td>50.832</td><td>1.776</td><td>13</td><td>3</td><td>0.19</td></tr><tr><th>90</th><td>50.832</td><td>1.774</td><td>42</td><td>8</td><td>0.16</td></tr><tr><th>91</th><td>50.832</td><td>1.776</td><td>47</td><td>4</td><td>0.08</td></tr><tr><th>92</th><td>50.830</td><td>1.775</td><td>20</td><td>2</td><td>0.09</td></tr><tr><th>93</th><td>50.831</td><td>1.773</td><td>20</td><td>12</td><td>0.38</td></tr><tr><th>94</th><td>50.837</td><td>1.800</td><td>7</td><td>5</td><td>0.42</td></tr><tr><th>95</th><td>50.800</td><td>1.689</td><td>13</td><td>14</td><td>0.52</td></tr><tr><th>96</th><td>50.789</td><td>1.691</td><td>1883</td><td>6</td><td>0.00</td></tr><tr><th>97</th><td>50.778</td><td>1.679</td><td>66</td><td>1</td><td>0.01</td></tr><tr><th>98</th><td>50.779</td><td>1.659</td><td>13</td><td>0</td><td>0.00</td></tr><tr><th>99</th><td>50.771</td><td>1.666</td><td>327</td><td>3</td><td>0.01</td></tr><tr><th>100</th><td>50.774</td><td>1.673</td><td>20</td><td>0</td><td>0.00</td></tr><tr><th>101</th><td>50.779</td><td>1.606</td><td>87</td><td>50</td><td>0.36</td></tr><tr><th>102</th><td>50.807</td><td>1.690</td><td>32</td><td>0</td><td>0.00</td></tr><tr><th>103</th><td>50.797</td><td>1.688</td><td>27</td><td>1</td><td>0.04</td></tr><tr><th>104</th><td>50.801</td><td>1.690</td><td>17</td><td>1</td><td>0.06</td></tr><tr><th>105</th><td>50.789</td><td>1.690</td><td>13</td><td>0</td><td>0.00</td></tr></tbody></table>