Fish scale stable isotopes as potential indicators of nutrient pollution: Exploring the response of roach<i> (Rutilus</i><i> rutilus)</i> scale d15N and d13C to a gradient of land use disturbance

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F23%3A00583809" target="_blank" >RIV/60077344:_____/23:00583809 - isvavai.cz</a>

Alternative codes found

RIV/67985807:_____/23:00583809

Result on the web

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

Result language

angličtina

Original language name

Fish scale stable isotopes as potential indicators of nutrient pollution: Exploring the response of roach<i> (Rutilus</i><i> rutilus)</i> scale d15N and d13C to a gradient of land use disturbance

Original language description

To examine the suitability of fish scales as potential tracers of nutrient pollution, we analysed the nitrogen and carbon sta-ble isotope values (d15N and d13C) 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 d15N 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 d13C values differed by d%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 d13C values may explain the lack of relationships between roach scale d13C values and the explanatory variables. In summary, our findings show that fish scale d15N values are sensitive bioindicators of catchment-derived anthropogenic nitrogen inputs to freshwater ecosystems. Because scales can be sampled in a nonlethal way and d15N analysis is relatively inexpensive, we suggest that measuring the d15N values of fish scales could be an effective method for monitoring nitrogen pollution in aquatic environments.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10619 - Biodiversity conservation

Project

<a href="/en/project/GA20-18005S" target="_blank" >GA20-18005S: How important is biogenic methane for secondary production in seasonally stratified freshwater reservoirs?</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Science of the Total Environment

ISSN

0048-9697

e-ISSN

1879-1026

Volume of the periodical

865

Issue of the periodical within the volume

Dec

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

161198

UT code for WoS article

000917892100001

EID of the result in the Scopus database

2-s2.0-85145349876