When conservation conflicts occur, the recognition of a plurality of perspectives among the stakeholders makes it possible to better understand the divergences and convergences between the parties. In this research, Q methodology was used to explore different stakeholder views on management issues surrounding intensive farming in the floodplain of Lac Saint-Pierre (Quebec, Canada), a UNESCO biosphere reserve and a RAMSAR conservation site. In recent decades, Lac Saint-Pierre has undergone many changes in its floodplain, notably through the conversion of perennial crops to more intensive annual crops considered incompatible with aquatic life by the conservation community and current agri-environmental laws. This research highlighted three perspectives related to the standing of intensive farming in Lac Saint-Pierre’s floodplain: pro-conservation, pro-agriculture and conflict between agriculture and conservation in the floodplains. This research illustrates the socio-ecological complexity behind intensive farming in floodplains and the need for representativeness of the main perspectives during negotiations between the parties.