Species-specific trophic discrimination factors can reduce the uncertainty of stable isotope analyses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F24%3A43908147" target="_blank" >RIV/60076658:12520/24:43908147 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s10750-024-05513-6" target="_blank" >https://doi.org/10.1007/s10750-024-05513-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10750-024-05513-6" target="_blank" >10.1007/s10750-024-05513-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Species-specific trophic discrimination factors can reduce the uncertainty of stable isotope analyses

Popis výsledku v původním jazyce

Stable isotope analysis has been broadly used to study food webs, but often relies on inaccurate assumptions of trophic isotopic discriminations, which could lead to misinterpretation of obtained results. While many taxa exhibit similar trophic discrimination factors (TDFs), crayfish, exhibit omnivorous feeding strategies, yet TDFs are missing. In this study, we determined TDFs and tissue biokinetic parameters of the marbled crayfish Procambarus virginalis as a model species. Moreover, we compared commonly used TDFs and those determined from this study and applied them across species and ecosystems as a first attempt to compare the effect of species-specific TDFs in Bayesian trophic mixing models. Our results revealed differences between the TDFs of different tissues and biokinetic parameters of crayfish. Our result also revealed TDFs differences between crayfish relying mostly on plants versus those relying on an animal diet. We found differences of TDF suitability among species and ecosystems, highlighting the need for specific TDFs for different crayfish species. This study improves our understanding and the need for species-calibrated TDFs for robust statistical analysis of stable isotope data. Our approach is widely applicable across taxa and ecosystems to reduce the bias introduced by using unspecific TDFs in Bayesian mixing models.

Název v anglickém jazyce

Species-specific trophic discrimination factors can reduce the uncertainty of stable isotope analyses

Popis výsledku anglicky

Stable isotope analysis has been broadly used to study food webs, but often relies on inaccurate assumptions of trophic isotopic discriminations, which could lead to misinterpretation of obtained results. While many taxa exhibit similar trophic discrimination factors (TDFs), crayfish, exhibit omnivorous feeding strategies, yet TDFs are missing. In this study, we determined TDFs and tissue biokinetic parameters of the marbled crayfish Procambarus virginalis as a model species. Moreover, we compared commonly used TDFs and those determined from this study and applied them across species and ecosystems as a first attempt to compare the effect of species-specific TDFs in Bayesian trophic mixing models. Our results revealed differences between the TDFs of different tissues and biokinetic parameters of crayfish. Our result also revealed TDFs differences between crayfish relying mostly on plants versus those relying on an animal diet. We found differences of TDF suitability among species and ecosystems, highlighting the need for specific TDFs for different crayfish species. This study improves our understanding and the need for species-calibrated TDFs for robust statistical analysis of stable isotope data. Our approach is widely applicable across taxa and ecosystems to reduce the bias introduced by using unspecific TDFs in Bayesian mixing models.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GA19-04431S" target="_blank" >GA19-04431S: Teplotou ovlivněné změny v interakcích a ekologických rolích prominentních invazivních raků</a><br>

Návaznosti

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

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Hydrobiologia

ISSN

0018-8158

e-ISSN

1573-5117

Svazek periodika

851

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

17

Strana od-do

3471-3487

Kód UT WoS článku

001204647500004

EID výsledku v databázi Scopus

2-s2.0-85190818001