Oxygen stable isotope composition of carbonate encrustations of two modern, widely distributed, morphologically different charophyte species

Pronin, Eugeniusz; Pełechaty, Mariusz; Apolinarska, Karina; Pukacz, Andrzej

doi:10.1007/s10750-017-3444-4

Cited by 7 publications

(5 citation statements)

References 49 publications

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“…Oogonia are the female reproductive organs and they are preserved as small calcitic spheres biomineralized in small lakes or ponds during the warmer weeks. Their δ 18 O allow constraining summer freshwater temperatures 51,52 . We also analyzed gastropods from the family Clausilidae (n = 3), which are small terrestrial gastropods frequently observed around the Mediterranean Sea.…”

Section: Methodsmentioning

confidence: 99%

Long-term dynamic topographic support during post-orogenic crustal thinning revealed by stable isotope (δ18O) paleo-altimetry in eastern Pyrenees

Huyghe

Mouthereau

Ségalen

et al. 2020

Sci Rep

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Understanding the geodynamic and earth surface processes at the origin of post-collisional surface uplift in mountain ranges requires reconstruction of paleo-elevation. Here, we focus on the topographic evolution of the cerdanya Basin in the eastern pyrenees formed by post-orogenic extension during the Late Miocene. Stable isotope (δ 18 o) analyses of small rodent teeth and biogenic carbonates show the basin uplifted by 500 m since 6.5 Ma. These new paleoaltitudes constraints when combined with the regional geology and geophysical data reveal the anomalously high topography of the region is the result of density changes in the sublithospheric mantle associated with crustal thinning and then opening of Gulf of Lion during the chattian-early Burdigalian.

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Section: Methodsmentioning

confidence: 99%

Long-term dynamic topographic support during post-orogenic crustal thinning revealed by stable isotope (δ18O) paleo-altimetry in eastern Pyrenees

Huyghe

Mouthereau

Ségalen

et al. 2020

Sci Rep

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“…In dense charophyte beds, water exchange may be limited and the basal parts of thalli may be overshaded by an apical canopy. This may result in more intensive respiration, reducing water pH (Kragh et al 2017;Pronin et al 2018;Sand-Jensen et al 2018. The similar rate of encrustation losses in Lake Jasne (dense beds of C. tomentosa) and in Lake Kołowin (much lower density of C. tomentosa) indicates a negligible effect of the mechanism cited above (Supporting Information Fig.…”

Section: Species Groupmentioning

confidence: 90%

“…In dense charophyte beds, water exchange may be limited and the basal parts of thalli may be overshaded by an apical canopy. This may result in more intensive respiration, reducing water pH (Kragh et al 2017; Pronin et al 2018; Sand‐Jensen et al 2018, 2019, 2021). The similar rate of encrustation losses in Lake Jasne (dense beds of C .…”

Section: Discussionmentioning

confidence: 99%

Recycling and deposition of inorganic carbon from calcium carbonate encrustations of charophytes

Strzałek,

Kufel,

Apolinarska

et al. 2023

Limnology & Oceanography

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Many aquatic primary producers can use bicarbonates as a carbon source for photosynthesis. Charophytes of the two genera: Chara and Nitellopsis are quite efficient in this process. Some species of these macroalgae produce carbonate encrustations, mainly calcium carbonate, constituting up to 86% of the summer maximum dry weight of the standing crop. In this study, we analyzed the fate of inorganic carbon accumulated this way in Chara spp. and Nitellopsis obtusa from six Polish lakes located in two regions (warmer W Poland and cooler NE Poland). Our study distinguished two groups of charophyte species that differed in the way of CaCO3 release from their summer standing crops. On average, the corticate Chara rudis and C. tomentosa belonging to the first group were less efficient in depositing CaCO3 from summer to autumn than the less corticate C. contraria and ecorticate N. obtusa of the second group. The latter two species were more efficient in inorganic carbon burial in sediments. On the contrary, dissolution of encrustation was more typical of the first species group and was facilitated by decreasing the pH and saturation index of calcite in lake water. The final output of CaCO3 loss mainly resulted from combined species‐specific features, lake water properties and overwintering patterns. Our study revealed that inorganic carbon cycling through charophytes involves burial and dissolution and is more complex than previously thought.

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“…However, in larger lakes, changes especially of the sensitive type of macrophytes, which form isoetide groups of plants in soft water lakes, might be noticed, and as the authors conclude; these changes were observed due to increasing recreational use of lakes, as well as the changes in the direct catchment (Klimaszyk et al 2020 ). The next group of aquatic plants that are sensitive to the environmental changes of water and also to changes in the catchment area, as well as increasing recreation pressure, are charophytes (Królikowska 1997 ; Bociąg et al 2011 ; Krupska et al 2012 ; Pukacz et al 2013 ; Pełechaty et al 2014 , 2015 ; Pronin et al 2016 , 2018 ).…”

Section: Discussionmentioning

confidence: 99%

Are the existing guidelines sufficient for the assessment of bathing water quality? The example of Polish lakes

Pronin

2021

Environ Sci Pollut Res

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The safety of beachgoers and swimmers is determined by the presence or absence of microbial contaminants and cyanobacterial toxins in the water. This study compared the assessment of bathing waters according to the Bathing Water Directive, which is based on the concentration of fecal contaminants, with some modifications, and a new method based on the concentration of chlorophyll-a, which corresponds to the World Health Organization (WHO) guidelines used for determining cyanobacterial density in the water posing threat to people health. The results obtained from the method based on chlorophyll-a concentration clearly showed that the number of bathing waters in Poland with sufficient and insufficient quality were higher in 2018 and 2019, compared to the method based on microbial contamination. The closing of bathing waters based only on the visual confirmation of cyanobacterial blooms might not be enough to prevent the threat to swimmers’ health. The multivariate analyses applied in this study seem to confirm that chlorophyll-a concentration with associated cyanobacterial density might serve as an additional parameter for assessing the quality of bathing waters, and in the case of small water reservoirs, might indirectly inform about the conditions and changes in water ecosystems.

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Oxygen stable isotope composition of carbonate encrustations of two modern, widely distributed, morphologically different charophyte species

Cited by 7 publications

References 49 publications

Long-term dynamic topographic support during post-orogenic crustal thinning revealed by stable isotope (δ18O) paleo-altimetry in eastern Pyrenees

Long-term dynamic topographic support during post-orogenic crustal thinning revealed by stable isotope (δ18O) paleo-altimetry in eastern Pyrenees

Recycling and deposition of inorganic carbon from calcium carbonate encrustations of charophytes

Are the existing guidelines sufficient for the assessment of bathing water quality? The example of Polish lakes

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