| 15 | 15 | Values of the explanatory variables are calculated for each segment of the river network. The distance to the sea, to the source and the relative distance (between sea limit and the more upstream source) are directly calculated from the river network topology. The temperatures are extracted from the CCM (and come from the CRU (Mitchell et al., 2004)). Elevation and slope come from the CCM layer. The obstacle pressure (characteristics, number of dams,…) comes from the National list of obstacles to river flows (ROE) from the ONEMA. Glass eel fisheries data set (not yet implemented) comes from Castelnaud (1994), non-professional/leisure fisheries and professional fisheries data set from the ONEMA. |
