Table 1.
Partly aggregated Warnow Estuary coastline monitoring data
| Sampling spot | Southern stones | Southern beaches | Ottos Steine | Schnater-mann | Schnater-mann | Schnater-mann | IGA Park | IGA Park | Alter Strom | Marina | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sampling method | bare eye | bare eye | bare eye | bare eye | bare eye | sieve | sieve | bare eye | bare eye | bare eye | ||
| Number of samplings | 3 | 3 | 4 | 1 | 2 | 3 | 1 | 1 | 1 | 1 | ||
| Water level (above MWL) | 96 cm | 96 cm | 0–30 cm | 15 cm | 96 cm | 15–94 cm | 7–95 cm | 153 cm | 153 cm | 153 cm | Average | |
| OSPAR item name | % (items/m2) | % | /m2 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cigarette butts and filters | 16.3 (0.47) | 37 (2.83) | 12 (0.22) | 7.3 (4.6) | 6.4 (1.1) | 4 (0.43) | 27.1 (1.17) | 6.6 (0.6) | 14.1 (5.1) | 1.2 (0.3) | 17.8 | 1.68 |
| Plastic pieces 5–25 mm | 11.6 (0.33) | 3.5 (0.27) | 7.7 (0.14) | 0 (0) | 2.9 (0.5) | 23.4 (2.53) | 8.5 (0.37) | 38.5 (3.5) | 5.5 (2) | 2 (0.5) | 12.1 | 1.01 |
| Plastic pieces 25–500 mm | 0 (0) | 2.2 (0.17) | 5.7 (0.11) | 14 (8.8) | 1.7 (0.3) | 13.2 (1.43) | 6.2 (0.27) | 13.2 (1.2) | 8.9 (3.2) | 2 (0.5) | 10.0 | 1.60 |
| Fireworks plastic pieces | 2.3 (0.07) | 0.9 (0.07) | 3.5 (0.06) | 11.1 (7) | 0.6 (0.1) | 0 (0) | 0.8 (0.03) | 2.2 (0.2) | 26.9 (9.7) | 1.2 (0.3) | 8.2 | 1.95 |
| Polystyrene pieces 25–500 mm | 5.8 (0.17) | 6.1 (0.47) | 0.8 (0.01) | 0 (0) | 24 (4.15) | 0 (0) | 0 (0) | 0 (0) | 1.7 (0.6) | 49.6 (12.5) | 10.5 | 2.56 |
| Plastic pieces <5 mm | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 12.9 (1.4) | 19.4 (0.83) | 0 (0) | 0 (0) | 0 (0) | 2.9 | 0.32 |
| Industrial pellets | 0 (0) | 5.2 (0.4) | 0.6 (0.01) | 0 (0) | 0 (0) | 7.1 (0.77) | 5.4 (0.23) | 0 (0) | 0 (0) | 0 (0) | 2.2 | 0.20 |
| Crisp packets/sweet wrappers | 9.3 (0.27) | 5.7 (0.43) | 5.7 (0.11) | 0.3 (0.2) | 5.5 (0.95) | 2.2 (0.23) | 0.8 (0.03) | 6.6 (0.6) | 4.7 (1.7) | 5.2 (1.3) | 7.0 | 0.58 |
| Bags incl. Pieces (all) | 2.3 (0.07) | 0.4 (0.03) | 0.4 (0.01) | 0 (0) | 0 (1) | 8 (0.87) | 3.1 (0.13) | 0 (0) | 5 (1.8) | 2 (0.5) | 2.6 | 0.44 |
| Foam sponge | 0 (0) | 0.4 (0.03) | 0.7 (0.01) | 0 (0) | 0 (0) | 1.8 (0.2) | 0.8 (0.03) | 3.3 (0.3) | 0 (0) | 13.9 (3.5) | 2.4 | 0.45 |
| Plastic caps and lids (all) | 0 (0) | 0.9 (0.07) | 3 (0.06) | 0 (0) | 1.4 (0.25) | 0.6 (0.07) | 0 (0) | 0 (0) | 5.3 (1.9) | 4 (1) | 3.4 | 0.33 |
| Foil wrappers, aluminum foil | 0 (0) | 1.7 (0.13) | 1 (0.02) | 2.2 (1.4) | 0.3 (0.05) | 1.5 (0.17) | 3.9 (0.17) | 5.5 (0.5) | 0.6 (0.2) | 2 (0.5) | 2.0 | 0.31 |
| String & cord (diam. <10 mm) | 1.2 (0.03) | 1.7 (0.13) | 1.2 (0.02) | 0.3 (0.2) | 0 (0) | 1.8 (0.2) | 2.3 (0.1) | 1.1 (0.1) | 0.6 (0.2) | 0 (0) | 1.5 | 0.11 |
| Food contaimers e.g., fast food | 4.7 (0.13) | 0 (0) | 2.8 (0.05) | 0 (0) | 0 (0) | 0 (0) | 0.8 (0.03) | 3.3 (0.3) | 0.3 (0.1) | 7.9 (2) | 2.9 | 0.29 |
| Bottle caps, lids, & pull tabs | 0 (0) | 0 (0) | 0.9 (0.02) | 0.3 (0.2) | 0 (0) | 0.9 (0.1) | 0.8 (0.03) | 2.2 (0.2) | 0.8 (0.3) | 1.6 (0.4) | 1.1 | 0.13 |
| Lolly sticks | 1.2 (0.03) | 0.4 (0.03) | 0.3 (0.01) | 0 (0) | 0 (0) | 0.3 (0.03) | 0 (0) | 6.6 (0.6) | 0.8 (0.3) | 0 (0) | 0.7 | 0.10 |
| Cups and cup lids | 2.3 (0.07) | 0 (0) | 0.2 (0) | 3.2 (2) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 1.4 (0.5) | 0 (0) | 0.9 | 0.26 |
| Cleaning bristles | 0 (0) | 0 (0) | 0.1 (0) | 42.2 (26.6) | 0.3 (0.05) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 5.9 | 2.67 |
| Cotton buds | 4.7 (0.13) | 1.3 (0.1) | 4.4 (0.08) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 2.9 | 0.03 |
| Other sanitary items | 2.3 (0.07) | 0.4 (0.03) | 3.3 (0.06) | 1 (0.6) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 2.2 | 0.08 |
| Medical Items | 0 (0) | 0 (0) | 1.1 (0.02) | 0.3 (0.2) | 1.7 (0.3) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 1.0 | 0.05 |
“Southern stones” include Gehlsdorf Fähre, Warnow Hotel and Holzhalbinsel. Southern beaches cover the sampling spots Oldendorfer Tannen and Gehlsdorf Fähre