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isotopes

Five Undergrad Rockstars

Today I am very excited – five of my awesome undergraduate students will be presenting their theses work. I couldn’t be prouder of what they have accomplished. Delaney Tight built a biogeochemical reaction model of nitrogen cycling in  aquifers of tidal freshwater zones. Here, water is completely fresh but diurnal …

Radiocarbon, SUVA, Flowpaths, & Family

Our paper, Riverine export of aged carbon driven by flow path depth and residence time connecting aged dissolved organic matter export with deeper flow paths, is now available online! (Barnes et al. 2018) Inland waters represent an important component of the global carbon cycle, releasing between 2-4 Gt of carbon dioxide into …

Happy New Year

This Spring semester I am on sabbatical. We are very lucky at Colorado College to get a junior sabbatical (1/2 teaching load following the completion of a successful 3rd yr review) and I am looking forward to the opportunities the extra time provides. Time that will let me finally get …

Old Carbon on the Move

our paper is out in Nature Geoscience!! Increased mobilization of aged carbon to rivers by human disturbance   Approximately 8% of anthropogenic carbon dioxide emissions are estimated to come from land-use change1, but this estimate excludes fluxes of terrestrial carbon to aquatic ecosystems from human disturbance. Carbon fluxes from land …

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