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'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'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