Tracing Groundwater‐Surface Water Interactions in a Volcanic Maar Lake Using Stable Isotopes and 222Rn DOI Creative Commons
Germain Esquivel‐Hernández,

Emanuel Montealegre‐Viales,

Rolando Sánchez‐Gutiérrez

и другие.

Journal of Geophysical Research Biogeosciences, Год журнала: 2024, Номер 129(12)

Опубликована: Дек. 1, 2024

Abstract Isotope hydrological studies to understand groundwater‐surface water interactions in tropical, high‐elevation catchments are limited. These important controlling lake residence time, aqueous biogeochemistry, and availability for downstream communities ecosystems. To better comprehend the complexity of spatio‐temporal variations aquifer‐lake domain tropical volcanic regions, a multi‐tracer approach including inorganic carbon stable isotopes (δ 2 H, δ 18 O, 13 C DIC ), hydrochemistry, 222 Rn was applied Lake Hule, northern Costa Rica. Seasonal isotope mass balance calculations using lake, stream, precipitation, groundwater compositions were supplemented with local hydrometeorological information. Evaporation inflow ratios ( E/I ) revealed small variability between dry (December–April) wet seasons (May–November), relatively low evaporation losses, 2.9 ± 1.0 % 3.2 1.8 %, respectively. Bayesian end‐member analysis indicated that annual inputs from groundwater, runoff represented 61.3 8.1%, 24.4 8.4, 14.3 5.9% total inflow, Temporal confirmed key role carbonate buffering plays this greater CO degassing sources season. This tracer‐aided assessment maar Rica provides evidence previously unknown illustrates application isotopic tools estimating balances seasonal discharge into natural lakes across front Central America.

Язык: Английский

Stable water isotopic composition and evaporation to inflow ratios for high-mountain tropical Ecuadorian lakes DOI Creative Commons
Steve W. Lyon,

Scott Hickman,

Pablo V. Mosquera

и другие.

Hydrological Sciences Journal, Год журнала: 2024, Номер 69(11), С. 1523 - 1538

Опубликована: Авг. 5, 2024

In this study, we explore the utility of stable isotopes water (δ2H and δ18O) as integrative proxies for evaporative condition in high-mountain tropical lakes using a set small Ecuadorian Cajas National Park. Specifically, (1) characterize variability isotopic composition across several varying size depth (2) determine evaporation fraction inflow these lakes. We have used Hydrocalculator tool estimation to (E/I) ratio. Results indicated that larger lower seasonal their compared with smaller Further, there was clear variation monthly E/I ratios estimated lakes, indicating likely plays some (albeit limited) role level experienced within year.

Язык: Английский

Процитировано

2
A Biogeochemical Comparison of three Representative Lakes of Costa Rica DOI
Germain Esquivel‐Hernández, Rolando Sánchez‐Gutiérrez, María Arias-Andrés

и другие.

Inland Waters, Год журнала: 2024, Номер unknown, С. 1 - 29

Опубликована: Авг. 28, 2024

Lakes are widely distributed across Costa Rica, from coasts to the highest elevation regions, and located in main terrestrial biomes. However, updated biogeochemical information about types of lakes is still lacking. We present comparative biogeochemistry (water chemistry, stable isotopes, picoplankton) for a coastal lake (Lake Madre de Dios, LMD), volcanic Barva, LB), glacial Ditkevi, LD). Sampling was conducted between February-November 2022 including dry rainy seasonal conditions. Hydrological chemical conditions were evaluated using water carbon dissolved organic matter (DOM), major ions, microbiota analysis. Isotopic data (δ18O, δ13CDIC) confirmed lower evaporative losses maar tarn productivity response precipitation inputs. Excitation/Emission matrices prevalence fulvic humic acids lakes, mainly aromatic proteins soluble microbial by-products lake. Picophytoplankton (PPP, ∼0.2 10 μm) represented by phycocyanin-rich picocyanobacteria (PC-Pcy) events three but had more representation phycoerythrin (PE-Pcy) events. fluctuations PPP cell abundance than temperate lakes. Like other eutrophic Pcy also dominated over picoeukaryotes (Peuk) algae abundance. This work seeks promote adopting an ecosystem approach study functioning tropical combination chemical, hydrological, biological provide baseline future studies (e.g., climate change pollution impacts) on Rica.

Язык: Английский

Процитировано

1
Glacial and Periglacial Landscapes in Costa Rica DOI
Adolfo Quesada‐Román

World geomorphological landscapes, Год журнала: 2024, Номер unknown, С. 151 - 159

Опубликована: Янв. 1, 2024

Процитировано

0
Tracing Groundwater‐Surface Water Interactions in a Volcanic Maar Lake Using Stable Isotopes and 222Rn DOI Creative Commons
Germain Esquivel‐Hernández,

Emanuel Montealegre‐Viales,

Rolando Sánchez‐Gutiérrez

и другие.

Journal of Geophysical Research Biogeosciences, Год журнала: 2024, Номер 129(12)

Опубликована: Дек. 1, 2024

Abstract Isotope hydrological studies to understand groundwater‐surface water interactions in tropical, high‐elevation catchments are limited. These important controlling lake residence time, aqueous biogeochemistry, and availability for downstream communities ecosystems. To better comprehend the complexity of spatio‐temporal variations aquifer‐lake domain tropical volcanic regions, a multi‐tracer approach including inorganic carbon stable isotopes (δ 2 H, δ 18 O, 13 C DIC ), hydrochemistry, 222 Rn was applied Lake Hule, northern Costa Rica. Seasonal isotope mass balance calculations using lake, stream, precipitation, groundwater compositions were supplemented with local hydrometeorological information. Evaporation inflow ratios ( E/I ) revealed small variability between dry (December–April) wet seasons (May–November), relatively low evaporation losses, 2.9 ± 1.0 % 3.2 1.8 %, respectively. Bayesian end‐member analysis indicated that annual inputs from groundwater, runoff represented 61.3 8.1%, 24.4 8.4, 14.3 5.9% total inflow, Temporal confirmed key role carbonate buffering plays this greater CO degassing sources season. This tracer‐aided assessment maar Rica provides evidence previously unknown illustrates application isotopic tools estimating balances seasonal discharge into natural lakes across front Central America.

Язык: Английский

Процитировано

0