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

TABLE 1 Numbers of adult Lissotriton newts observed over 105 ponds in the western part of the department Pas de Calais in the 1974 to 2021 period. F v = Lv /(Lh + Lv)
PondCoordinatesSample size for speciesF vnumberNorthern latitudeEastern longitudeLissotriton helveticus (N)Lissotriton vulgaris (N)150.7701.7722110.05250.8711.6171941750.47350.9021.67922390.04450.9011.67812670.05550.8701.606580240.04650.9021.68023360.03750.8691.6083410.03850.8691.6092000.00950.8751.6562620.071050.8551.6664101490.271150.8541.664188960.341250.8391.672108100.081350.8371.6752950.151450.8201.63165410.391550.8581.6302660.191650.8611.61092340.271750.8601.6064300.001850.8491.597186870.321950.8531.59527110.292050.8661.608107460.302150.8441.590104760.422250.8441.59826160.382350.8441.59983660.442450.8451.5998121820.182550.8451.59945160.262650.8451.59953400.432750.8451.59986350.292850.8451.60041160.282950.8451.60079330.293050.8451.60070170.203150.8451.60151450.473250.8461.60017124500.213350.8451.6005761520.213450.8461.60310100.503550.8491.598460.603650.8611.59131610.663750.8601.5861132440.683850.8601.583723470.833950.8571.6643620.054050.8641.6161840.184150.8651.60282240.234250.8551.664112350.244350.8321.62619120.394450.8441.59319120.394550.8501.5821100.914650.8191.6111740.194750.8181.60835350.504850.8221.6001130.214950.8231.6026181590.205050.8211.61914100.425150.8231.62325100.295250.8191.6174570.135350.8201.59832150.325450.8211.59931100.245550.7971.62624680.745650.7951.6273110.795750.8001.62314270.665850.7991.6220111.005950.7841.61716330.676050.7971.6194660.946150.7971.6213340.926250.7981.613172950.956350.7911.621211100.846450.7991.6155120.716550.7971.6160121.006650.7991.61801311.006750.7971.6241150.946850.7991.6282180.906950.7931.625760.467050.7911.624930.257150.8081.6678140.647250.8261.6681940.177350.8511.72314820.017450.8551.7006810.017550.8631.69240510.007650.8231.722118270.197750.8221.7223023020.507850.8221.72191780.467950.8511.7593640.108050.8501.75866100.138150.8541.7012200.008250.8191.7183022180.428350.8051.6997700.008450.8051.7002800.008550.8311.8212000.008650.8441.78342270.398750.8331.77550140.228850.8331.778558460.088950.8321.7761330.199050.8321.7744280.169150.8321.7764740.089250.8301.7752020.099350.8311.77320120.389450.8371.800750.429550.8001.68913140.529650.7891.691188360.009750.7781.6796610.019850.7791.6591300.009950.7711.66632730.0110050.7741.6732000.0010150.7791.60687500.3610250.8071.6903200.0010350.7971.6882710.0410450.8011.6901710.0610550.7891.6901300.00