Decreasing Photoreactivity and Concurrent Change in Dissolved Organic Matter Composition with Increasing Inland Water Residence Time
Charlotte Grasset,
Karólína Einarsdóttir,
Núria Catalán
et al.
Abstract:Photochemical degradation of dissolved organic matter (DOM) has been the subject of numerous studies, however, its regulation along the inland water continuum is still unclear. We aimed to unravel the DOM photoreactivity and concurrent DOM compositional changes across 30 boreal aquatic ecosystems including peat waters, streams, rivers, and lakes distributed along a water retention time (WRT) gradient. Samples were subject to a standardized exposure of simulated sunlight. We measured the apparent quantum yield … Show more
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