Ten Random Forest models were fitted in order to characterise the environmental niche and to predict the potential spatial distribution of Zostera marina along the French western seaboard. 3 rasters are provided: 1) Habitat suitability index (values ranging from 0 to 1 when conditions are estimated to be optimal), 2) standard deviation around the mean habitat suitability index, and 3) binary suitability estimates (0= not suitable, 1=suitable). These model estimates indicate areas where the species may occur and are overall consistent with field observations but note that these maps are model-based and do not correspond to actual field observations.
Ten Random Forest models were fitted in order to characterise the environmental niche and to predict the potential spatial distribution of Zostera marina along the French western seaboard. 3 rasters are provided: 1) Habitat suitability index (values ranging from 0 to 1 when conditions are estimated to be optimal), 2) standard deviation around the mean habitat suitability index, and 3) binary suitability estimates (0= not suitable, 1=suitable). These model estimates indicate areas where the species may occur and are overall consistent with field observations but note that these maps are model-based and do not correspond to actual field observations.
10 modèles Random Forest ont été ajustés afin de décrire la niche environnementale et prédire la distribution spatiale potentielle de Zostera marina le long de la côte française de la Manche Atlantique, et de cette espèce. 3 rasters sont fournis ici :1) l’indice d’habitat potentiel (ou habitat suitability en anglais - valeurs comprises entre 0 et 1, plus la valeur est proche de 1, plus l'habitat est adapté), 2) l'écart type autour de l’indice d’habitat potentiel, et 3) le potentiel sous forme binaire (0= non adapté, 1= adapté). Le modèle d'habitat représente uniquement les zones où l'espèce peut se trouver, et non des zones confirmées par les observations sur le terrain.
