<abstract xmlns="http://www.w3.org/1999/xhtml">In 32 lakes, 19 watercourses and 11 estuaries located along the southern Baltic coast (NW Poland) taxa of <italic>Potomogeton</italic> and <italic>Stuckenia</italic> genera were determined on the basis of 981/0.1 m2 plant samples. Environmental factors affecting them were identified on the basis of 212 water samples and 272 sediment samples. Twenty-one <italic>Potamogeton</italic> taxa were found, including four hybrids and two <italic>Stuckenia</italic> species. Twenty-one pondweed species occurred in lakes, thirteen in watercourses and ten in estuaries. There were significant differences in environmental factors in particular types of water bodies (p&lt;0.001) except for the content of organic and mineral matter and of humic acids in the sediment.There was a statistically significant difference (p&lt;0.001) between the environmental factors affecting <italic>Potamogeton</italic> and <italic>Stuckenia</italic>, respectively, within each of the waterbody types studied. In lakes, <italic>Potamogeton</italic> occupied poorer habitats than <italic>Stuckenia</italic>, with lower conductivity, redox, PAR intensity, concentration of bicarbonates, calcium and chlorides and lower calcium content in the sediment. In watercourses, <italic>Potamogeton</italic> occurred in less coloured and less oxygenated waters than <italic>Stuckenia</italic>, but richer in CO2 and chlorides, better insolated and flowing faster. It also occupied less alkaline sediment, but of higher conductivity. In estuaries, <italic>Potamogeton</italic> occurred in waters with a relatively low concentration of chlorides and calcium than <italic>Stuckenia</italic>, lower pH and conductivity, but more coloured and, consequently, with lower PAR. C&amp;RT analysis showed mineral concentration (Ca2+, Cl−, HCO3−) in the water, its conductivity, colour and flow to be the highest-ranking environmental factors affecting pondweeds.</abstract>

In 32 lakes, 19 watercourses and 11 estuaries located along the southern Baltic coast (NW Poland) taxa of Potomogeton and Stuckenia genera were determined on the basis of 981/0.1 m2 plant samples. Environmental factors affecting them were identified on the basis of 212 water samples and 272 sediment samples. Twenty-one Potamogeton taxa were found, including four hybrids and two Stuckenia species. Twenty-one pondweed species occurred in lakes, thirteen in watercourses and ten in estuaries. There were significant differences in environmental factors in particular types of water bodies (p<0.001) except for the content of organic and mineral matter and of humic acids in the sediment.There was a statistically significant difference (p<0.001) between the environmental factors affecting Potamogeton and Stuckenia, respectively, within each of the waterbody types studied. In lakes, Potamogeton occupied poorer habitats than Stuckenia, with lower conductivity, redox, PAR intensity, concentration of bicarbonates, calcium and chlorides and lower calcium content in the sediment. In watercourses, Potamogeton occurred in less coloured and less oxygenated waters than Stuckenia, but richer in CO2 and chlorides, better insolated and flowing faster. It also occupied less alkaline sediment, but of higher conductivity. In estuaries, Potamogeton occurred in waters with a relatively low concentration of chlorides and calcium than Stuckenia, lower pH and conductivity, but more coloured and, consequently, with lower PAR. C&RT analysis showed mineral concentration (Ca2+, Cl−, HCO3−) in the water, its conductivity, colour and flow to be the highest-ranking environmental factors affecting pondweeds.

Environmental factors affecting pondweeds in water bodies of northwest Poland

Department of Plant Ecology, Faculty of Biology

Biodiversity Research and Conservation

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Environmental factors affecting pondweeds in water bodies of northwest Poland"}

In 32 lakes, 19 watercourses and 11 estuaries located along the southern Baltic coast (NW Poland) taxa of Potomogeton and Stuckenia genera were determined on...

Environmental factors affecting pondweeds in water bodies of northwest Poland

Publié en ligne: 12 mars 2020

Pages: 13 - 28

Reçu: 02 sept. 2019

Accepté: 31 déc. 2019

DOI: https://doi.org/10.2478/biorc-2019-0014

Mots clés
pondweed, lakes, estuaries, watercourses, environmental factors

© 2019 Marek Merdalski et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Environmental factors affecting pondweeds in water bodies of northwest Poland

Publié en ligne: 12 mars 2020

Pages: 13 - 28

Reçu: 02 sept. 2019

Accepté: 31 déc. 2019

DOI: https://doi.org/10.2478/biorc-2019-0014

Mots cléspondweed, lakes, estuaries, watercourses, environmental factors

© 2019 Marek Merdalski et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
pondweed, lakes, estuaries, watercourses, environmental factors