EBONE EUROPEAN BIODIVERSITY OBSERVATION NETWORK Nicola Clerici, Christof J. Weissteiner, Andrej Halabuk, Gerard Hazeu, Gerbert Roerink and Sander Mücher Alterra Report 2259 ISSN 1566-7197 Investigation of phenology information for habitat classification using SPOT VGT and MODIS NDVI data Phenology related measures and indicators at varying spatial scales