D
Diane M. McKnight
Researcher at Institute of Arctic and Alpine Research
Publications - 327
Citations - 29178
Diane M. McKnight is an academic researcher from Institute of Arctic and Alpine Research. The author has contributed to research in topics: Dissolved organic carbon & Meltwater. The author has an hindex of 82, co-authored 315 publications receiving 26281 citations. Previous affiliations of Diane M. McKnight include University of Texas at Dallas & University of Cambridge.
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Humic substances and trace metals associated with Fe and Al oxides deposited in an acidic mountain stream
TL;DR: In this paper, the authors found that the composition of the deposited oxides changes consistently with distance downstream, with the most upstream oxide samples having the greatest Fe and organic carbon content, and that strong metal binding sites associated with the sorbed fulvic acid are more than sufficient to account for the trace metal content of the oxides.
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Nutrient treatments alter microbial mat colonization in two glacial meltwater streams from the McMurdo Dry Valleys, Antarctica.
Tyler J. Kohler,Tyler J. Kohler,David J. Van Horn,Joshua P. Darling,Cristina D. Takacs-Vesbach,Diane M. McKnight +5 more
TL;DR: N amendments and N treatments were substantially elevated in Bacteroidetes and the small diatom, Fistulifera pelliculosa, and species richness was almost double in P and N + P treatments over others, and coccoid green algae and Proteobacteria were more abundant in both streams.
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Reach-scale cation exchange controls on major ion chemistry of an Antarctic glacial meltwater stream
TL;DR: In this paper, the authors examined cation transport and exchange reactions during a stream tracer experiment in a dry valley glacial meltwater stream, where the injection solution was composed of dissolved Li+, Na+, K+, and Cl-.
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Dissolved black carbon in Antarctic lakes: Chemical signatures of past and present sources
TL;DR: This paper showed that dissolved black carbon can persist in freshwater and saline surface waters for thousands of years, while preserving the chemical signature of the original source materials, representing long-range transport of black carbon from wildfires.
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The influence of stream thermal regimes and preferential flow paths on hyporheic exchange in a glacial meltwater stream
TL;DR: In this paper, the effects of hyporheic thermal gradients on exchange processes, including preferential flow paths (PFPs), were evaluated in a glacial meltwater stream.