Resumen
Sentinel-2 images were sensitive to change in the vegetation contained in the pixel. The reduction in the NDVI values was proportional to the reduction in the vegetation, following a linear relationship. The quantitative relationship obtained in this study is valuable since a vineyard, once established, generally loses grapevines each year due to diseases, abiotic stress, etc., so it is important to consider the effect of the missing vines in order to have a correct estimation of the vineyard vigour.