This thesis explores information practices in biodiversity citizen science in Sweden and explicates the role and meaning of information practices for the activities in which participants engage. To achieve this, the study makes use of a method assemblage comprising trace ethnography, participant observation and interviews.

The thesis focuses on the explication of how information practices vary based on epistemic interests while still being conformed through the doings and sayings carried out by the participants; how values of authority, credibility and reliability of data unfold in information practices; and how material tools constrain and enable information practices. The findings of the study illustrate that while biodiversity citizen science data comprise neatly structured representations of conducted species observations, exportable for analysis and decision-making, participants’ enactments of information practices are not straightforward and direct but rather take winding paths from fieldwork to species reports. The thesis thereby nuances current knowledge of volunteer efforts for biodiversity monitoring through an improved and elaborated understanding of participant practices.