<abstract xmlns="http://www.w3.org/1999/xhtml">

Two charophyte species <italic>(Chara tomentosa</italic> Thulli. 1799 and <italic>Chara globularis</italic> L. 1753) were studied to assess their biomass and CaCO3 production in seven hard-water lakes in Western Poland. In each lake, samples of ten individuals from three study sites were collected for dry weight (DW) and calcium carbonate content (% CaCO3) analyses. Additionally, physicochemical parameters of water collected from the above sampling sites were analyzed.
No significant differences were found between the study sites in each lake for any of the analyzed parameters. In all the lakes, DW of <italic>C. tomentosa</italic> (0.60 ± 0.23 g indiv.-1) was significantly higher and more differentiated than DW of <italic>C. globularis</italic> (0.11 ± 0.08 g indiv.-1), suggesting species-specificity. The CaCO3 content in DW for <italic>C. tomentosa</italic> was higher (58.8-70.9%) than in <italic>C. globularis</italic> (50.1-68.3%), however, it did not reflect the DW differentiation, suggesting lake-specificity. The physicochemical properties of water revealed clear lake-to-lake differentiation. Different correlations between dry weight and calcium carbonate content and lake characteristics were found for each species. The results showed that DW and % CaCO3 are closely related to habitat conditions and different factors may influence the individual biomass of each species.
</abstract>

Two charophyte species (Chara tomentosa Thulli. 1799 and Chara globularis L. 1753) were studied to assess their biomass and CaCO3 production in seven hard-water lakes in Western Poland. In each lake, samples of ten individuals from three study sites were collected for dry weight (DW) and calcium carbonate content (% CaCO3) analyses. Additionally, physicochemical parameters of water collected from the above sampling sites were analyzed.
No significant differences were found between the study sites in each lake for any of the analyzed parameters. In all the lakes, DW of C. tomentosa (0.60 ± 0.23 g indiv.-1) was significantly higher and more differentiated than DW of C. globularis (0.11 ± 0.08 g indiv.-1), suggesting species-specificity. The CaCO3 content in DW for C. tomentosa was higher (58.8-70.9%) than in C. globularis (50.1-68.3%), however, it did not reflect the DW differentiation, suggesting lake-specificity. The physicochemical properties of water revealed clear lake-to-lake differentiation. Different correlations between dry weight and calcium carbonate content and lake characteristics were found for each species. The results showed that DW and % CaCO3 are closely related to habitat conditions and different factors may influence the individual biomass of each species.

Dry weight and calcium carbonate encrustation of two morphologically different <italic>Chara</italic> species: a comparative study from different lakes

Department of Hydrobiology, Faculty of Biology

Department of Water and Soil Analysis, Faculty of Chemistry

Oceanological and Hydrobiological Studies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Dry weight and calcium carbonate encrustation of two morphologically different  species: a comparative study from different lakes

Two charophyte species (Chara tomentosa Thulli. 1799 and Chara globularis L. 1753) were studied to assess their biomass and CaCO3 production in seven...

Dry weight and calcium carbonate encrustation of two morphologically different Chara species: a comparative study from different lakes

Article Category: Original research paper

Publié en ligne: 22 sept. 2016

Pages: 377 - 387

Reçu: 27 oct. 2015

Accepté: 22 févr. 2016

DOI: https://doi.org/10.1515/ohs-2016-0034

Mots clés
charophytes, individual biomass, calcite encrustation, water properties, inter-lake, variability

© 2016 Faculty of Oceanography and Geography, University of Gdańsk, Poland. All rights reserved

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Dry weight and calcium carbonate encrustation of two morphologically different Chara species: a comparative study from different lakes

Article Category: Original research paper

Publié en ligne: 22 sept. 2016

Pages: 377 - 387

Reçu: 27 oct. 2015

Accepté: 22 févr. 2016

DOI: https://doi.org/10.1515/ohs-2016-0034

Mots cléscharophytes, individual biomass, calcite encrustation, water properties, inter-lake, variability

© 2016 Faculty of Oceanography and Geography, University of Gdańsk, Poland. All rights reserved

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Mots clés
charophytes, individual biomass, calcite encrustation, water properties, inter-lake, variability