The phenological observations of RitmeNatura are compiled in iNaturalist. This citizen science platform for registering biodiversity data is the tool used to collect, validate and provide access to phenological observations shared by citizens.
PhenoTandem project, as a subproject of RitmeNatura in iNaturalist has been created to group these observations related to the rhythm of nature.
Observers willing to participate will be focused to specific areas and to specific types of vegetation. Deciduous forests are the principal interesting vegetation type because their phenology could be clearly detected from the space and at-ground level simultaneously. Beech forests (Fagus sylvatica) will provide the main areas but also Q.petraea and Q.robur forests will be also be considered. Marcescent strategies are also common in some Quercus forests (i.e., Quercus pubescens and Quercus faginea). Their leaves do not fall during autumn season but they change clearly the colour because of leaf senescence. At shrub level, some Mediterranean opened areas will be included, as for example the Timoneda d’Alfés and the sub-alpine formations of Genista balansae, which have important greening and flowering phases that change their physiognomy. At grassland-level, some sub-alpine and Mediterranean areas will be selected as they have visual changes on their greenness because of the climate-driven phenologies. Finally, different crop areas will also be included in the study.
Following the BBCH-scale, 4 development stages of plants will be monitored (number 1, 4, 6 and 9). Those stages have been selected to ensure the interoperability with remote sensing data, as they could be detected from space.
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