Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Best result for each number of variables_
| No. of variable | Correlation | Selections |
|---|---|---|
| 1 | 0.603 | Temperature |
| 2 | 0.725 | Temperature, O2 |
| 3 | 0.722 | Temperature, O2, pH |
| 4 | 0.698 | Depth, temperature, O2, pH |
| 5 | 0.651 | Depth, temperature, salinity, O2, pH |
Characteristics of the stations with Rangia cuneata identification in the macrozoobenthos community
| Station | S_002 | S_003 | S_011 |
|---|---|---|---|
| Geographical coordinates | 14° 14′57 648″ E 53° 55′59 | 14° 15′29 124″ E 53° 57′23 | 14° 35′08 136″ E 53° 59′21 |
| Depth [m] | 6.9 | 10.1 | 6.3 |
| Temperature [°C] | 14.589 | 14.847 | 14.589 |
| Salinity [PSU] | 7.345 | 7.331 | 7.345 |
| Dissolved oxygen content [mg · L−1] | 10.54 | 10.53 | 10.54 |
| pH | 8.36 | 8.24 | 8.36 |
| Bottom substrate | Fine sand | Fine sand with medium sand | Medium sand with fine sand |
| Abundance [ind. · m−2]/biomass [g · m−2] of R. cuneata | 5280/51.771 | 10/115.667 | 80/0.838 |
| Average length [mm]/biomass [g · m−2] of individual of R. cuneata | ≤11/0.1 | 333/11.57 | ≤11/0.1 |
| Dominant in abundance/biomass at the station | Peringia ulvae, Rangia cuneata/Mya arenaria, Rangia cuneata | Pygospio elegans, Marenzelleria spp./Mya arenaria | Peringia ulvae/Mytilus trossulus, Cerastoderma glaucum |
Invasion history of the clam Rangia cuneata in the Baltic Sea_
| Year | Site in the Baltic Sea Root | Country | Reference |
|---|---|---|---|
| 2010 | The eastern part of Vistula Lagoon; Port of Kaliningrad | Russia | Rudinskaya and Gusev (2012), Ezhova (2012) |
| 2011 | The western part of the Vistula Lagoon | Poland | Warzocha and Drgas (2013), Janas et al. (2014), Kornijów et al. (2018) |
| 2013 | Curonian Lagoon | Lithuania | Solovjova (2014) |
| Gulf of Riga | Estonia | Solovjova (2014), Solovjova et al. (2019) | |
| Schellbruch Lagoon | Germany | Wiese et al. (2016) | |
| 2014 | Vistula estuary | Poland | Janas et al. (2014) |
| Pärnu Bay (first dead shells) | Estonia | Möller and Kotta (2017) | |
| 2015 | The channel connecting the North Sea and the Baltic Sea with an entry in Brunsbüttel and around Lübeck | Germany | Wiese et al. (2016) |
| 2016 | Swedish Baltic fjord–Svensksundsviken Bay | Sweden | von Proschwitz (2018) |
| Pärnu Bay (first living individuals) | Estonia | Möller and Kotta (2017) | |
| 2018 | Pomeranian Bay–beach of Świnoujście | Poland | Panicz et al. (2022) |
| 2019 | Szczecin Lagoon (Odra estuary) | Poland | Czerniejewski et al. (2023) |
| 2021 | Ustka Bay | Poland | Kurek and Wiatrowska (2023) |