11 Result(s)
within
Jean-François Lapierre
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Article
Open AccessLong-term trends in carbon and color signal uneven browning and terrestrialization of northern lakes
The widespread browning of northern lakes has been associated with long-term increases in dissolved organic carbon and color and should be linked to changes in surface water carbon dioxide, yet the long-term c...
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Article
Contrasting seasons and land uses alter riverine dissolved organic matter composition
Different sources and fates control riverine dissolved organic matter (DOM) composition in catchments of contrasting land use and climate. However, assessing the changes in DOM composition together with nutrie...
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Article
How Are Greenhouse Gases Coupled Across Seasons in a Large Temperate River with Differential Land Use?
Rivers are known to emit large amounts of greenhouse gases globally, however, few studies have evaluated the interacting influence of land use, within river features (for example, sites of major confluence, ch...
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Article
Open AccessCorrection to: Photo-reactivity of dissolved organic carbon in the freshwater continuum
The original publication of this paper contains a mistake in Figure 3.
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Article
Open AccessControls on Dissolved Organic Carbon Bioreactivity in River Systems
Inland waters transport, transform and retain significant amounts of dissolved organic carbon (DOC) that may be biologically reactive (bioreactive) and thus potentially degraded into atmospheric CO2. Despite its ...
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Article
Open AccessPhoto-reactivity of dissolved organic carbon in the freshwater continuum
The patterns in dissolved organic carbon (DOC) photo-mineralization along the freshwater continuum from land to sea are poorly known. Specifically, it has not been resolved how the photo-degradation of DOC int...
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Article
Open AccessDegradation potentials of dissolved organic carbon (DOC) from thawed permafrost peat
Global warming can substantially affect the export of dissolved organic carbon (DOC) from peat-permafrost to aquatic systems. The direct degradability of such peat-derived DOC, however, is poorly constrained b...
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Article
Biodegradability of Vegetation-Derived Dissolved Organic Carbon in a Cool Temperate Ombrotrophic Bog
Dissolved organic carbon (DOC) plays a key role in the peatland carbon balance and serves numerous ecological and chemical functions including acting as a microbial substrate. In this study, we quantify the co...
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Article
Increases in terrestrially derived carbon stimulate organic carbon processing and CO2 emissions in boreal aquatic ecosystems
The concentrations of terrestrially derived dissolved organic carbon have been increasing throughout northern aquatic ecosystems in recent decades, but whether these shifts have an impact on aquatic carbon emi...
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Article
Seston fatty acid composition and copepod RNA:DNA ratio with respect to the underwater light climate in fluvial Lac Saint-Pierre
The relationship between the underwater light availability at different wavelengths (from 351 to 700 nm) and the fatty acid (FA) composition of seston, as well as the trophic transfer of fatty acids from produ...
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Article
Effects of macrophytes and terrestrial inputs on fluorescent dissolved organic matter in a large river system
We studied the contribution of aquatic macrophytes and allochthonous sources to the pool of fluorescent dissolved organic matter (FDOM) in a large river system composed of several distinct water masses that fl...
