%0 Journal Article %B PLOS ONE %D 2016 %G eng %P e0150794 %R 10.1371/journal.pone.0150794 %T Focal Plant Observations as a Standardised Method for Pollinator Monitoring: Opportunities and Limitations for Mass Participation Citizen Science %U https://doi.org/10.1371/journal.pone.0150794 %V 11 %9 Journal Article