@misc{10481/92047,
year = {2024},
month = {1},
url = {https://hdl.handle.net/10481/92047},
abstract = {The extent of littoral influence on lake gas dynamics remains debated in the aquatic science community due to the lack
of direct quantification of lateral gas transport. The prevalent assumption of diffusive horizontal transport in gas budgets
fails to explain anomalies observed in pelagic gas concentrations. Here, we demonstrate through high-frequency
measurements in a eutrophic lake that daily convective horizontal circulation generates littoral-pelagic
advective gas
fluxes one order of magnitude larger than typical horizontal fluxes used in gas budgets. These lateral fluxes are sufficient
to redistribute gases at the basin-scale
and generate concentration anomalies reported in other lakes. Our observations
also contrast the hypothesis of pure, nocturnal littoral-to-pelagic
exchange by showing that convective
circulation transports gases such as oxygen and methane toward both the pelagic and littoral zones during the daytime.
This study challenges the traditional pelagic-centered
models of aquatic systems by showing that convective circulation
represents a fundamental lateral transport mechanism to be integrated into gas budgets.},
organization = {Swiss National Science Foundation
(“Buoyancy driven nearshore transport in lakes” project; HYPOlimnetic THErmal SIphonS,
HYPOTHESIS, grant no. 175919)},
publisher = {American Association for the Advancement of Science (AAAS)},
title = {Lake surface cooling drives littoral-pelagic exchange of dissolved gases},
doi = {10.1126/sciadv.adi0617},
author = {Doda, Tomy and Ramón Casañas, Cintia Luz and Ulloa, Hugo N. and Brennwald, Matthias S. and Kipfer, Rolf and Perga, Marie Elodie and Wüest, Alfred and Schubert, Carsten J. and Bouffard, Damien},
}