Systematical δ13C investigations of TOC in aquatic plants, DIC and dissolved CO2 in lake water from three Tibetan Plateau lakes

Liu, Hu; Liu, Jia; Hu, Jing; Cao, Yunning; Xiao, Shangbin; Liu, Weiguo

doi:10.1016/j.ecolind.2022.109060

Cited by 9 publications

(2 citation statements)

References 59 publications

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“…Analyses of carbon and nitrogen isotope compositions in derived matter (δ 13 C of organic matter δ 13 C ORG and δ 15 N of organic matter δ 15 N ORG ) are often used in studies of freshwater ecosystems [12], where scientists focus on submerged macrophytes [13][14][15][16][17][18][19]. The isotopic information about aquatic plants recorded as δ 13 C ORG and δ 15 N ORG serves various purposes, including characterizing and tracking food webs in aquatic ecosystems [20,21] and determining the source of organic matter deposited in the sediments [22][23][24][25], etc.…”

Section: Introductionmentioning

confidence: 99%

“…Within complex lake ecosystems, numerous factors contribute to shaping the δ 13 C DIC and δ 15 N DIN . These enclose a comprehensive range of factors, including but not limited to water exchange over time, temperature fluctuations, biological activities of organisms inhabiting the investigated water ecosystem, and various other interrelated elements [13][14][15][16][17][18][19]. In the presented study, the focus on shaping the δ 13 C ORG and δ 15 N ORG will be minor due to the need to stress the usefulness of the obtained results for identifying the origin of the analyzed plant material.…”

Section: Introductionmentioning

confidence: 99%

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The Possible Use of Stable Carbon and Nitrogen Isotope Signal and Spectral Analysis to Identify Habitat Condition of Aquatic Plants

Pronin

2023

Limnological Review

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Many macrophyte species exhibit a high degree of plasticity, enabling them to thrive in various aquatic ecosystems. Identifying the growth conditions of individual aquatic plant species during research or specimen collection is not always possible. In many cases, the nature of the planned research does not necessitate recognizing environmental conditions. However, the scope of identifying the habitat parameters of the collections of submerged aquatic plant herbariums provides an opportunity for further research. This paper explores the possibilities of using isotopic signals of plants, supported by spectral analyses of powdered plant materials, to ascertain the environmental conditions from which the samples were collected. The results obtained from the stable carbon and nitrogen isotope compositions (δ13CORG and δ15NORG) and the analysis of spectral spectra via FTIR-ART (Fourier Transform Infrared Spectroscopy with Attenuated Total Reflectance) of plant material (Elodea canadensis Michx. species) collected from various habitat ecosystems, including rivers and both hard- and softwater lakes, exhibited significant distinctions between these habitats. Particularly high values of δ15NORG were recorded in the material from rivers. The stable carbon and nitrogen isotope compositions did not differentiate between the material collected from softwater and hardwater lakes. Nevertheless, when comparing the isotopic findings with the FTIR-ATR spectral analysis focused on identifying characteristic peaks associated with the presence of calcium carbonate, noticeable differences were observed in the presence and intensity of calcium carbonate peaks in the material. These differences were only evident when nondecarbonated plant material from hardwater lakes was used for the FTIR-ATR analysis. To the best of the author’s knowledge, the combination of methods applied in this study to identify the origin of E. canadensis from various freshwater environments is the first application of its kind that could enable the rapid identification of plant material origin. Such identification could prove useful in environmental, ecological, and paleoenvironmental research. The increased knowledge of macrophytes’ δ13CORG and δ15NORG values might also be essential in further tracking accelerated eutrophication based on aquatic vegetation’s isotopic signals. This might be important due to the assumption that the increased rate of eutrophication influences organic matter sedimentation in aquatic ecosystems, especially lakes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Possible Use of Stable Carbon and Nitrogen Isotope Signal and Spectral Analysis to Identify Habitat Condition of Aquatic Plants

Pronin

2023

Limnological Review

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Do stable carbon and nitrogen isotope values of Nitella flexilis differ between softwater and hardwater lakes?

et al. 2023

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The composition of stable carbon and nitrogen isotopes (δ13C and δ15N) is widely used for tracking the origin of organic matter (OM) present in lacustrine sediments. These isotopes also define the evolution of OM in food web loops. Charophyte species Nitella flexilis C. Agardh, 1824 can be found in different aquatic environments where it contributes significantly to sediment formation and influences biota function. Therefore, it is crucial to study more about δ13C and δ15N in different lake types. Here, we present the results of the first comprehensive study of N. flexilis δ13C and δ15N, which add to the knowledge of the C and N isotope records of charophytes. We obtained the δ13C and δ15N records of N. flexilis OM from hardwater and softwater lakes and checked for differences between these records. We also analyzed the differences in physical and chemical parameters. Finally, we compared the δ13C and δ15N records with physical and chemical parameters to identify the variables that have the highest influence on N. flexilis δ13C and δ15N values. Our study showed that both δ13C and δ15N did not differ significantly in the two types of lakes, although the lakes had significant differences in several physical and chemical parameters (pH, Ca2+, dissolved inorganic carbon, total phosphorus, conductivity). However, we observed that δ13C values were influenced by light conditions (photosynthetic active radiation, depth, dissolved OM), while δ15N values were influenced by the total nitrogen concentration in water.

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Source appointment of δ13C in sediments of a maar lake in southern China: Implications of fossil fuel CO2 emissions

Guo,

Han,

Liu

et al. 2024

Applied Geochemistry

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Systematical δ13C investigations of TOC in aquatic plants, DIC and dissolved CO2 in lake water from three Tibetan Plateau lakes

Cited by 9 publications

References 59 publications

The Possible Use of Stable Carbon and Nitrogen Isotope Signal and Spectral Analysis to Identify Habitat Condition of Aquatic Plants

The Possible Use of Stable Carbon and Nitrogen Isotope Signal and Spectral Analysis to Identify Habitat Condition of Aquatic Plants

Do stable carbon and nitrogen isotope values of Nitella flexilis differ between softwater and hardwater lakes?

Source appointment of δ13C in sediments of a maar lake in southern China: Implications of fossil fuel CO2 emissions

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