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Stable isotope evidence from archived fish scales indicates carbon cycle changes over the four-decade history of the Rimov Reservoir (Czechia).

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F21%3A00542650" target="_blank" >RIV/60077344:_____/21:00542650 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.1016/j.scitotenv.2020.142550" target="_blank" >https://doi.org/10.1016/j.scitotenv.2020.142550</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.scitotenv.2020.142550" target="_blank" >10.1016/j.scitotenv.2020.142550</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Stable isotope evidence from archived fish scales indicates carbon cycle changes over the four-decade history of the Rimov Reservoir (Czechia).

  • Original language description

    Using archived fish scale samples together with long-term monitoring data, this study investigates the potential of fish scales to record historical changes in the aquatic environment. We analysed stable carbon (delta C-13) and nitrogen (delta N-15) isotopes in the scales of two planktivorous cyprinid species collected from the meso-eutrophic Rimov Reservoir, Czechia, over its entire four-decade history (1979-2016). The delta C-13 of the fish scales varied greatly throughout the reservoir history. The lowest delta C-13 values were observed immediately after the reservoir was filled in 1979, indicating that fish production at that time was likely partially supported by C-13-depleted CO2 released from the inundated soil. During the 1980s, due to the high levels of phytoplankton production stimulated by high phosphorus inputs from the catchment, the delta C-13 values substantially increased. However, since 1990, the delta C-13 values have generally decreased, reflecting a gradual reduction in reservoir primary production caused by the decreasing input of phosphorus and increasing input of dissolved organic carbon from the catchment. The delta C-13 of fish scales was also used to reconstruct the CO2 concentration of the surface water. The reconstructed CO2 varied significantly during the four-decade history, but it was always below the air-equilibrium concentration, suggesting that the surface water of the reservoir has consistently absorbed atmospheric carbon. The fish-scale delta N-15 values remained relatively stable, while slightly increasing within three years after impoundment, likely because the nitrogen supply was high throughout the studied period. Our study contributes to the growing body of literature demonstrating that stable isotope analysis of archived biological samples is a promising approach for understanding historical trends in the biogeochemistry of aquatic environments. In particular, our results highlight the potential of delta C-13 in archived fish scales in reconstructing carbon cycle changes and evaluating human impacts on aquatic ecosystems.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10618 - Ecology

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2021

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Science of the Total Environment

  • ISSN

    0048-9697

  • e-ISSN

    1879-1026

  • Volume of the periodical

    755

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    10

  • Pages from-to

    142550

  • UT code for WoS article

    000600786700021

  • EID of the result in the Scopus database

    2-s2.0-85092236673