Response of stable isotopes (82H, 813C, 815N, 818O) of lake water, dissolved organic matter, seston, and zooplankton to an extreme precipitation event

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F23%3A43907301" target="_blank" >RIV/60076658:12310/23:43907301 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S004896972303245X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S004896972303245X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2023.164622" target="_blank" >10.1016/j.scitotenv.2023.164622</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Response of stable isotopes (82H, 813C, 815N, 818O) of lake water, dissolved organic matter, seston, and zooplankton to an extreme precipitation event

Popis výsledku v původním jazyce

Lake ecosystems process and cycle organic substrates, thus serving as important bioreactors in the global carbon cycle. Climate change is predicted to increase extreme weather and precipitation events that can flush nutrients and organic matter from soils to streams and lakes. Here we report changes in stable isotopes (82H, 813C, 815N, or 818O) of water, dissolved organic matter (DOM), seston, and zooplankton in a subalpine lake at short time resolution following an extreme precipitation event between early July to mid-August 2021. Water from excess precipitation and runoff remained in the lake epilimnion and coincided with increasing 813C values of seston (-30 %o to -20 %o), due to the input of carbonates and terrestrial organic matter. Particles settled into deeper lake layers after two days and contributed to the uncoupling of C and N cycling as the lake responded to this extreme precipitation event. Following the event, there was an increase in bulk 813C values of zooplankton (from -35 %o to -32 %o). Throughout this study, 813C values of DOM remained stable throughout the water column (-29 %o to -28 %o), while large isotopic fluctuations in DOM 82H (-140 %o to -115 %o) and 818O (+9 %o to +15 %o) values suggested DOM relocation and turnover. Integrating isotope hydrology, ecosystem ecology, and organic geochemistry offers an element-specific, detailed approach to investigating the impact of extreme precipitation events on freshwater ecosystems and particularly aquatic food webs.

Název v anglickém jazyce

Response of stable isotopes (82H, 813C, 815N, 818O) of lake water, dissolved organic matter, seston, and zooplankton to an extreme precipitation event

Popis výsledku anglicky

Lake ecosystems process and cycle organic substrates, thus serving as important bioreactors in the global carbon cycle. Climate change is predicted to increase extreme weather and precipitation events that can flush nutrients and organic matter from soils to streams and lakes. Here we report changes in stable isotopes (82H, 813C, 815N, or 818O) of water, dissolved organic matter (DOM), seston, and zooplankton in a subalpine lake at short time resolution following an extreme precipitation event between early July to mid-August 2021. Water from excess precipitation and runoff remained in the lake epilimnion and coincided with increasing 813C values of seston (-30 %o to -20 %o), due to the input of carbonates and terrestrial organic matter. Particles settled into deeper lake layers after two days and contributed to the uncoupling of C and N cycling as the lake responded to this extreme precipitation event. Following the event, there was an increase in bulk 813C values of zooplankton (from -35 %o to -32 %o). Throughout this study, 813C values of DOM remained stable throughout the water column (-29 %o to -28 %o), while large isotopic fluctuations in DOM 82H (-140 %o to -115 %o) and 818O (+9 %o to +15 %o) values suggested DOM relocation and turnover. Integrating isotope hydrology, ecosystem ecology, and organic geochemistry offers an element-specific, detailed approach to investigating the impact of extreme precipitation events on freshwater ecosystems and particularly aquatic food webs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10617 - Marine biology, freshwater biology, limnology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Science of the Total Environment

ISSN

0048-9697

e-ISSN

1879-1026

Svazek periodika

891

Číslo periodika v rámci svazku

SEP 15 2023

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

001033305600001

EID výsledku v databázi Scopus

2-s2.0-85161650526