Fig. 1.

Distinction of morphological classes. a All four morphological classes. b Small elements including single hyphae and small clumps are represented as blue stars while large elements consisting of large clumps and pellets are in the red gate shown as red circles. These two populations are distinguished by sample length and SWS total. c Further investigation of small elements: FWS length and SWS total distinguish hyphae (turquoise crosses) and small clumps (green triangles). Elements placed in the green gate are small clumps. Small elements outside of this gate were defined to be hyphae. d Further investigation of large elements: One distinction criteria for pellets from large clumps was by SWS total/sample length and FWS maximum/FWS fill factor. A large element found in the pink square-like gate which in addition has a saturated FWS was defined to be a pellet (see pink dots). Large elements not meeting one or both criteria are large clumps which are represented by dark red squares