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Strong temporal variation of consumer delta C-13 value in an oligotrophic reservoir is related to water level fluctuation

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F23%3A43906245" target="_blank" >RIV/60076658:12520/23:43906245 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://doi.org/10.1038/s41598-023-30849-9" target="_blank" >https://doi.org/10.1038/s41598-023-30849-9</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1038/s41598-023-30849-9" target="_blank" >10.1038/s41598-023-30849-9</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Strong temporal variation of consumer delta C-13 value in an oligotrophic reservoir is related to water level fluctuation

  • Popis výsledku v původním jazyce

    Using stable carbon and nitrogen isotope analysis (delta C-13 and delta N-15) to assess trophic interactions in freshwater ecosystems is a well established method, providing insight into ecosystem functioning. However, the spatial and temporal variability of isotope values, driven by environmental fluctuation is poorly understood and can complicate interpretations. We investigated how the temporal variation of stable isotopes in consumers (fish, crayfish and macrozoobenthos) of a canyon-shaped oligotrophic reservoir is associated with environmental factors such as water temperature, transparency, flooded area, and water quality measures. Consumers and their putative food sources were sampled and analyzed for carbon and nitrogen stable isotopes annually, and environmental parameters were measured monthly from 2014 to 2016. Results revealed significant differences in delta C-13 and delta N-15 values in each consumer among studied years. Over the years, fish and crayfish expressed differences in delta C-13 between 3 and 5 parts per thousand, whereas in zoobenthos differences were 12 parts per thousand. Variability in delta N-15 was similar across all consumers (2-4 parts per thousand). Moreover, results suggest that the flooded area of the reservoir was a major driver of delta C-13 stable isotope values variation in consumers, while variation in delta N-15 was not linked to any of the studied environmental factors. Bayesian mixing models further showed significant changes in the origin of detritivorous zoobenthos carbon sources (reversal shift from terrestrial detritus to algae origin) between years with low water level to years with the standard water level. Other species showed only slight differences in food source utilization among years. Our study highlights the importance of environmental factors as sources of variation in consumer&apos;s stable isotope values which should be considered especially when studied ecosystem strongly fluctuate in some environmental factor.

  • Název v anglickém jazyce

    Strong temporal variation of consumer delta C-13 value in an oligotrophic reservoir is related to water level fluctuation

  • Popis výsledku anglicky

    Using stable carbon and nitrogen isotope analysis (delta C-13 and delta N-15) to assess trophic interactions in freshwater ecosystems is a well established method, providing insight into ecosystem functioning. However, the spatial and temporal variability of isotope values, driven by environmental fluctuation is poorly understood and can complicate interpretations. We investigated how the temporal variation of stable isotopes in consumers (fish, crayfish and macrozoobenthos) of a canyon-shaped oligotrophic reservoir is associated with environmental factors such as water temperature, transparency, flooded area, and water quality measures. Consumers and their putative food sources were sampled and analyzed for carbon and nitrogen stable isotopes annually, and environmental parameters were measured monthly from 2014 to 2016. Results revealed significant differences in delta C-13 and delta N-15 values in each consumer among studied years. Over the years, fish and crayfish expressed differences in delta C-13 between 3 and 5 parts per thousand, whereas in zoobenthos differences were 12 parts per thousand. Variability in delta N-15 was similar across all consumers (2-4 parts per thousand). Moreover, results suggest that the flooded area of the reservoir was a major driver of delta C-13 stable isotope values variation in consumers, while variation in delta N-15 was not linked to any of the studied environmental factors. Bayesian mixing models further showed significant changes in the origin of detritivorous zoobenthos carbon sources (reversal shift from terrestrial detritus to algae origin) between years with low water level to years with the standard water level. Other species showed only slight differences in food source utilization among years. Our study highlights the importance of environmental factors as sources of variation in consumer&apos;s stable isotope values which should be considered especially when studied ecosystem strongly fluctuate in some environmental factor.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    10618 - Ecology

Návaznosti výsledku

  • Projekt

    <a href="/cs/project/LO1205" target="_blank" >LO1205: Udržitelnost a excelence centra akvakultury a biodiverzity hydrocenóz</a><br>

  • Návaznosti

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

Ostatní

  • Rok uplatnění

    2023

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    Scientific Reports

  • ISSN

    2045-2322

  • e-ISSN

  • Svazek periodika

    13

  • Číslo periodika v rámci svazku

    1

  • Stát vydavatele periodika

    US - Spojené státy americké

  • Počet stran výsledku

    9

  • Strana od-do

  • Kód UT WoS článku

    000946670000021

  • EID výsledku v databázi Scopus

    2-s2.0-85149574152