Environmental factors affecting pondweeds in water bodies of northwest Poland

Marek Merdalski , Krzysztof Banaś , Rafał Ronowski

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.
Author Marek Merdalski (FB / DPE)
Marek Merdalski,,
- Department of Plant Ecolog
, Krzysztof Banaś (FB / DPE)
Krzysztof Banaś,,
- Department of Plant Ecolog
, Rafał Ronowski (FB / DPE)
Rafał Ronowski,,
- Department of Plant Ecolog
Journal seriesBiodiversity: Research and Conservation, ISSN 1897-2810, [], (N/A 20 pkt)
Issue year2019
Vol56
No1
Pages13-28
Publication size in sheets0.75
Keywords in EnglishPotamogeton, Stuckenia, pondweed, lakes, estuaries, watercourses, environmental factors
DOIDOI:10.2478/biorc-2019-0014
URL https://doi.org/10.2478/biorc-2019-0014
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); with publication
Score (nominal)20
Score sourcejournalList
ScoreMinisterial score = 20.0, 26-03-2020, ArticleFromJournal
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