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Fish scale stable isotopes as potential indicators of nutrient pollution: Exploring the response of roach (Rutilus rutilus) scale 815N and 813C to a gradient of land use disturbance

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F23%3A43906487" target="_blank" >RIV/60076658:12310/23:43906487 - isvavai.cz</a>

  • Výsledek na webu

    <a href="https://www.sciencedirect.com/science/article/pii/S0048969722083024?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0048969722083024?via%3Dihub</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.scitotenv.2022.161198" target="_blank" >10.1016/j.scitotenv.2022.161198</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Fish scale stable isotopes as potential indicators of nutrient pollution: Exploring the response of roach (Rutilus rutilus) scale 815N and 813C to a gradient of land use disturbance

  • Popis výsledku v původním jazyce

    To examine the suitability of fish scales as potential tracers of nutrient pollution, we analysed the nitrogen and carbon sta-ble isotope values (815N and 813C) in scales of a generalist fish species, roach Rutilus rutilus, collected from 22 Czech res-ervoirs covering wide gradients of catchment land use and nutrient enrichment. Using generalised additive mixed models in the first step and generalised linear mixed models in the second step, we evaluated the response of roach scale stable isotope values to catchment land use variables (percentage of agricultural land and human population density) and in-reservoir water quality variables. Roach scale 815N values varied by 15 %o among the reservoirs and were strongly, line-arly, and positively associated with the percentage of agricultural land in the reservoir catchments, pointing to agriculture as the dominant source of nitrogen pollution in the investigated systems. Roach scale 813C values differed by 8 %o among the studied reservoirs and were not related to catchment land use variables or in-reservoir primary production (chloro-phyll-a levels). Possible variation in roach foraging strategies (littoral versus pelagic) between reservoirs or the contrasting effects of eutrophication-related autotrophic and heterotrophic processes on baseline 813C values may explain the lack of relationships between roach scale 813C values and the explanatory variables. In summary, our findings show that fish scale 815N values are sensitive bioindicators of catchment-derived anthropogenic nitrogen inputs to freshwater ecosystems. Be -cause scales can be sampled in a nonlethal way and 815N analysis is relatively inexpensive, we suggest that measuring the 815N values of fish scales could be an effective method for monitoring nitrogen pollution in aquatic environments.

  • Název v anglickém jazyce

    Fish scale stable isotopes as potential indicators of nutrient pollution: Exploring the response of roach (Rutilus rutilus) scale 815N and 813C to a gradient of land use disturbance

  • Popis výsledku anglicky

    To examine the suitability of fish scales as potential tracers of nutrient pollution, we analysed the nitrogen and carbon sta-ble isotope values (815N and 813C) in scales of a generalist fish species, roach Rutilus rutilus, collected from 22 Czech res-ervoirs covering wide gradients of catchment land use and nutrient enrichment. Using generalised additive mixed models in the first step and generalised linear mixed models in the second step, we evaluated the response of roach scale stable isotope values to catchment land use variables (percentage of agricultural land and human population density) and in-reservoir water quality variables. Roach scale 815N values varied by 15 %o among the reservoirs and were strongly, line-arly, and positively associated with the percentage of agricultural land in the reservoir catchments, pointing to agriculture as the dominant source of nitrogen pollution in the investigated systems. Roach scale 813C values differed by 8 %o among the studied reservoirs and were not related to catchment land use variables or in-reservoir primary production (chloro-phyll-a levels). Possible variation in roach foraging strategies (littoral versus pelagic) between reservoirs or the contrasting effects of eutrophication-related autotrophic and heterotrophic processes on baseline 813C values may explain the lack of relationships between roach scale 813C values and the explanatory variables. In summary, our findings show that fish scale 815N values are sensitive bioindicators of catchment-derived anthropogenic nitrogen inputs to freshwater ecosystems. Be -cause scales can be sampled in a nonlethal way and 815N analysis is relatively inexpensive, we suggest that measuring the 815N values of fish scales could be an effective method for monitoring nitrogen pollution in aquatic environments.

Klasifikace

  • Druh

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

  • CEP obor

  • OECD FORD obor

    10618 - Ecology

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

    Science of the Total Environment

  • ISSN

    0048-9697

  • e-ISSN

    1879-1026

  • Svazek periodika

    865

  • Číslo periodika v rámci svazku

    MAR 20 2023

  • Stát vydavatele periodika

    NL - Nizozemsko

  • Počet stran výsledku

    9

  • Strana od-do

  • Kód UT WoS článku

    000917892100001

  • EID výsledku v databázi Scopus

    2-s2.0-85145349876