The role of groundwater connectivity in sustaining European lake water systems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00647069" target="_blank" >RIV/60077344:_____/25:00647069 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.scitotenv.2025.180038" target="_blank" >https://doi.org/10.1016/j.scitotenv.2025.180038</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scitotenv.2025.180038" target="_blank" >10.1016/j.scitotenv.2025.180038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The role of groundwater connectivity in sustaining European lake water systems

Popis výsledku v původním jazyce

This study investigates the potential connectivity of groundwater with lakes (groundwater-lake connectivity), using the groundwater table depth to maximum lake depth ratio (GW/L) as an indicator. Results from 189 European lakes show that those that are disconnected or have low connectivity (GW/L > 0.5), typically at higher altitudes (>1000 m a.s.l.) in catchments with less-permeable geological formations (e.g., crystalline rocks), exhibit a higher sensitivity to evaporation (evaporation to inflow rate, E/I > 0.40) compared to lakes more highly connected to groundwater (GW/L < 0.1, E/I < 0.20). Lakes with higher groundwater-lake connectivity are also more resilient to climatic changes, with groundwater contributions correlating positively with catchment characteristics (e.g., land use and precipitation). While most lakes are primarily recharged by warm precipitation (>80 % of the rainfall contribution in lake waters), particularly in disconnected lakes, cold precipitation (snow and rain from November to April) contributes <20 % to the total recharge in the warmer months (May–October). Nevertheless, cold precipitation plays a crucial role in maintaining groundwater-lake connectivity by recharging groundwater and stabilizing lake water levels. Nitrate contamination is strongly associated with urban and agricultural land use, with concentrations increasing with groundwater input. Lakes with higher groundwater-lake connectivity tend to exhibit elevated nitrate levels, contributing to eutrophication. Overall, the GW/L indicator shows strong potential for future studies and application in hydrological assessments. These findings emphasize the importance of incorporating groundwater–lake connectivity into climate change vulnerability assessments, especially in relation to water balance, nutrient cycling, and ecosystem health.

Název v anglickém jazyce

The role of groundwater connectivity in sustaining European lake water systems

Popis výsledku anglicky

This study investigates the potential connectivity of groundwater with lakes (groundwater-lake connectivity), using the groundwater table depth to maximum lake depth ratio (GW/L) as an indicator. Results from 189 European lakes show that those that are disconnected or have low connectivity (GW/L > 0.5), typically at higher altitudes (>1000 m a.s.l.) in catchments with less-permeable geological formations (e.g., crystalline rocks), exhibit a higher sensitivity to evaporation (evaporation to inflow rate, E/I > 0.40) compared to lakes more highly connected to groundwater (GW/L < 0.1, E/I < 0.20). Lakes with higher groundwater-lake connectivity are also more resilient to climatic changes, with groundwater contributions correlating positively with catchment characteristics (e.g., land use and precipitation). While most lakes are primarily recharged by warm precipitation (>80 % of the rainfall contribution in lake waters), particularly in disconnected lakes, cold precipitation (snow and rain from November to April) contributes <20 % to the total recharge in the warmer months (May–October). Nevertheless, cold precipitation plays a crucial role in maintaining groundwater-lake connectivity by recharging groundwater and stabilizing lake water levels. Nitrate contamination is strongly associated with urban and agricultural land use, with concentrations increasing with groundwater input. Lakes with higher groundwater-lake connectivity tend to exhibit elevated nitrate levels, contributing to eutrophication. Overall, the GW/L indicator shows strong potential for future studies and application in hydrological assessments. These findings emphasize the importance of incorporating groundwater–lake connectivity into climate change vulnerability assessments, especially in relation to water balance, nutrient cycling, and ecosystem health.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10503 - Water resources

Projekt

<a href="/cs/project/GA23-07152S" target="_blank" >GA23-07152S: Zranitelná místa nedostatku vody ve střední Evropě na základě složení izotopů vody v jezerech: hydrologické, klimatické a socioekonomické determinanty</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

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

994

Číslo periodika v rámci svazku

Jul

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

180038

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-105009888566