Hierarchical clustering of survey 2 respondents. Respondents are grouped by similarity of roles performed. Colored boxes delineate individual clusters (k=8). R1-R19 refer to individual respondent IDs (n=19). Colored circles beneath respondent IDs reflect the respondent’s UDN site: Site 1 (red) =R18, R15, R12; Site 2 (light blue)=R2, R7; Site 3 (purple)=R3, R10, R8, R9; Site 4 (green)=R4; Site 5 (gold)=R13, R19, R5; Site 6 (grey)=R6, R17, R14; Site 7 (dark blue)=R1; Site 8 (black)=R11, R16.