Table 1 Parameters separated by category.
Category | Parameter in model | Constant value used in model | Changes in sensitivity test? | Changes in percent migrate test? | Notes |
|---|---|---|---|---|---|
Organism/eDNA | eDNA shedding rate | 1 eDNA mass unit/time step | No | No | Still relatively unknown, likely varies with time (many scales from second to years) and by organism, maybe varies with temperature or other biotic/abiotic conditions |
Organism/Ocean | Day depth | 500 m | No | No | Varies with light/temperature, Varies with organism |
Organism/Ocean | Night depth | 50 m | No | No | Varies with light/temperature/food availability, varies with organism |
Organism/Ocean | Migration times | Up: 2 h before sunset to 1 h after sunset; down: 1 h before sunrise to 2 h after sunrise; sunrise/sunset: determined by season | No | No | Varies with light/temperature/food availability, varies with organism |
Organism | Thickness of “layer” | 20 m | No | No | Varies with organism |
Organism | Percent of individuals (within a species) that vertically migrate | N/A | Yes - 0, 50, 100% | Yes - 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100% | Still relatively unknown |
Organism/eDNA | eDNA size distribution | N/A | Yes - ratio of LP:SP - 1:1, 1:2, 2:1 | No | Unknown, likely varies with time |
eDNA | Settling rate | N/A | Yes - 0, 25, 50 m/day | No | Unknown, likely varies with eDNA form (use value based on literature for marine snow) |
eDNA | Breakdown rate | 0.19 1/h | No | No | Unknown (use value based on literature for fecal pellet) |
eDNA/Ocean | Decay rate | N/A | Yes - 0.01, 0.1 1/h and k = 0.05 + 0.0014*T 1/h | No | Varies with temperature (possibly other biotic/abiotic factors and by organism) (Supplemental Fig. S3) |
Ocean | Mixing profile | Determined by season | No | No | Varies by season and depth (Supplemental Fig. S1) |
Ocean | Vertical advection profile | N/A | Yes - 0, 1E–4, −1E–4 m/s | No | Varies by season and depth (Supplemental Fig. S2) |
