Abstract
Biodiversity is changing rapidly, and several sources of data are available to try and objectify these changes. The lecture will present these different types of data, the ways in which they can be analyzed and their limitations in detecting rapid changes in living organisms. It will focus in particular on participatory science, a long-standing form of partnership between researchers and citizens around a common research project. The recent revival of participatory science in the field of biodiversity has a twofold advantage. On the one hand, they enable reliable documentation of changes in biodiversity. This is particularly important for the study of interaction events between plants and their pollinators, which, although crucial for both types of partner, are relatively rare and therefore difficult to observe. Participatory science programs mobilizing a large number of participants are a unique means of observing living organisms on a large scale to detect these stealthy interactions. On the other hand, participatory science also has the potential to transform its participants, by reconnecting them with nature.
