Purpose: Present an analysis method for survey results from beach litter inventories on Lake Geneva.
Background: This is in the context of the global movement to reduce plastic debris in the maritime environment. Riverine inputs are major contributors of plastic debris (and all types of refuse) to the oceans. This is an analysis of the data collected on the shores of Lake Geneva over a three year period. The maritime protocol was modified in very specific ways to adjust for the local geography and population density.
Statistic | Year one | Year two | Year three | Combined |
---|---|---|---|---|
Samples | 83 | 41 | 24 | 148 |
mean | 8.77 | 9.99 | 9.01 | 9.16 |
median | 4.83 | 6.84 | 4.24 | 5.52 |
Std dev | 9.92 | 8.52 | 16.14 | 10.75 |
25\%ile | 3.113 | 4.41 | 2.36 | 3.18 |
75\%ile | 10.405 | 12.35 | 7.79 | 11.24 |
Minimum | 0.68 | 0.57 | 0.11 | 0.11 |
Maximum | 50.075 | 39.54 | 77.05 | 77.05 |
MCBP samples | 80 | 22 | 5 | 107 |
SLR samples | 0 | 18 | 15 | 33 |
EPFL samples | 2 | 2 | 2 | 6 |
PC samples | 0 | 0 | 2 | 2 |