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Diatom record of progressive anthropopressure in the Gulf of Gdańsk and the Vistula Lagoon

Małgorzata Witak
Małgorzata Witak
 oraz 
Jarosław Pędziński
Jarosław Pędziński
   | 18 cze 2018
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Article Category: Original research paper
Data publikacji: 18 cze 2018
Zakres stron: 167 - 180
Otrzymano: 05 wrz 2017
Przyjęty: 27 paź 2017
DOI: https://doi.org/10.1515/ohs-2018-0016
© 2018 Faculty of Oceanography and Geography, University of Gdańsk, Poland
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Location of the studied sediment cores. Red dots – superficial sediments with the anthropogenic assemblage
Location of the studied sediment cores. Red dots – superficial sediments with the anthropogenic assemblage

Figure 2

The average percentage content of diatom ecological groups in subbottom sediments of the study area Gulf of Gdańsk Vistula Lagoon
The average percentage content of diatom ecological groups in subbottom sediments of the study area Gulf of Gdańsk Vistula Lagoon

Figure 3

The average percentage content of the main planktic diatoms in subbottom sediments of the study area; mesoh. – mesohalobous, o. hal. – oligohalobous halophilous Gulf of Gdańsk Vistula Lagoon
The average percentage content of the main planktic diatoms in subbottom sediments of the study area; mesoh. – mesohalobous, o. hal. – oligohalobous halophilous Gulf of Gdańsk Vistula Lagoon

Figure 4

The average percentage content of the main benthic diatoms in subbottom sediments of the study area; o. hal. – oligohalobous halophilous Gulf of Gdańsk Vistula Lagoon
The average percentage content of the main benthic diatoms in subbottom sediments of the study area; o. hal. – oligohalobous halophilous Gulf of Gdańsk Vistula Lagoon

Characteristic features of anthropogenic diatom assemblage zones distinguished in the cores from the Gulf of Gdańsk

Diatom Assemblage Zone Depth [cm] Diversity number of taxa/number of genera State of diatoms
2/2001-III Thalassiosira levanderi – Pauliella taeniata – Stephanodiscus hantzschii DAZ 19–0 116/41 good
3/2001-IV Amphora pediculus – Cocconeis neothumensis DAZ 20–0 106/30 good + some broken valves
4/2001-V Pauliella taeniata – Cyclotella spp. – Stephanodiscus spp. DAZ 18–0 146/47 good + some broken valves
6/2001-V Thalassiosira levanderi – Opephora krumbeinii – Cyclotella spp. DAZ 25–0 144/45 good + some broken valves
7/2001-IV Thalassiosira levanderi – Skeletonema marinoi – Pauliella taeniata DAZ 20–0 85/31 good

Characteristic features of anthropogenic diatom assemblage zones distinguished in the cores of the Vistula Lagoon

Diatom Assemblage Zone Depth [cm] Diversity number of taxa/number of genera State of diatoms
ZW 1-IV Cyclotella choctawhatcheeana – Cyclotella meneghiniana – Stephanodiscus hantzschii – Staurosirella pinnata DAZ 10–0 58/23 good + some broken valves
ZW 4-IV Aulacoseira granulata – Fragilaria heidenii – Stephanodiscus neoastraea DAZ 30–0 22/11 poor + many broken valves
ZW 8-IV Fallacia forcipata – Amphora spp. – Cocconeis spp. – Fragilaria martyi DAZ 48–0 59/29 good
ZW 10-IV Cyclotella meneghiniana – Fragilaria martyi DAZ 30–0 67/30 good
ZW 11-IV Cyclotella meneghiniana – Staurosira venter – Aulacoseira granulata DAZ 17–0 26/17 poor
ZW 12-IV Fragilaria sopotensis – Opephora guenter-grassii – Amphora spp. – Cocconeis spp. DAZ 52–0 85/29 good + some broken valves
ZW 14-IV Opephora mutabilis – Amphora pediculus – Fragilaria martyi – Staurosira spp. DAZ 30–0 74/38 good + some broken valves
ZW 15-III Staurosira venter – Fragilaria martyi – Aulacoseira granulata DAZ 20–0 19/13 poor

Changes in species composition in anthropogenic taphocoenoses of the Gulf of Gdańsk

DAZ 2/2001-III 3/2001-IV 4/2001-V 6/2001-V 7/2001-IV
Number of genera ↓10 ↓8 ↓7 ↓3 ↓18
Number of taxa ↓71 ↓38 ↓30 ↓30 ↓65

Changes in species composition in anthropogenic taphocoenoses of the Vistula Lagoon

DAZ ZW 1-IV ZW 10-IV ZW 14-IV ZW 4-IV ZW 11- IV ZW 15-III ZW 8-IV ZW 12-IV
Number of genera ↓3 ↓2 ↑2 ↓2 ↑1 ↓5 0 ↑3
Number taxa ↓7 ↓25 ↓37 ↓9 ↓4 ↓10 ↓9 ↑10

Parameters of the analyzed cores

Region Core Nb φ λ Water depth [m] Lithology
Gulf of Gdańsk 2/2001 54°30.658′N 18°42.768′E 30.0 silt, black (N1), at a depth of 8 cm single shells of Macoma, HCl–;
3/2001 54°33.640′N 18°44.913′E 54.5 muddy sand, dark-grey (N2), HCl–;
4/2001 54°31.083′N 18°41.349′E 29.8 silt, black (N1), at the top - admixture of sand with grains of gravel; single shells of Macoma, HCl–;
6/2001 54°33.282′N 18°47.938′E 62.0 silty mud, black (N1), organic matter, HCl–;
7/2001 54°31.008′N 18°52.569′E 65.0 silty mud, black (N1), organic matter, single shells of marine mollusks above a depth of 20 cm, HCl–;
Vistula Lagoon ZW 1 54°15.75′N 19°23.416′E 2.1 silty mud, black (N1) and olive-black (5Y 2/1);
ZW 4 54°18.666′N 19°21.583′E 2.7 silty mud, black (N1), HCl–;
ZW 8 54°22.448′N 19°27.536′E 2.2 mud dark yellowish brown (10YR 4/2), HCl–;
ZW 10 54°19.631′N 19°31.280′E 1.8 mud, HCl–;
ZW 11 54°22.1′N 19°43.183′E 3.4 silty mud, green-black, (5GY 2/1) and dark-green (5GY 4/1);
ZW 12 54°25.566′N 19°36.366′E 2.2 silty mud, green-black (5GY 2/1), HCl–;
ZW 14 54°22.333′N 19°40.20′E 2.5 sandy mud, with admixture of fine sands, numerous shells of freshwater mollusks, HCl–;
ZW 15 54°26.40′N 19°43′E 4.3 silty mud, grey-black (N2) and green-black (5G 2/1)
eISSN:
1897-3191
Język:
Angielski
Częstotliwość wydawania:
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Dziedziny czasopisma:
Chemistry, other, Geosciences, Life Sciences
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