Longitudinal shifts in dissolved organic matter chemogeography and chemodiversity within headwater streams: a river continuum reprise

Verfasser / Beitragende:
[Jennifer Mosher, Louis Kaplan, David Podgorski, Amy McKenna, Alan Marshall]
Ort, Verlag, Jahr:
2015
Enthalten in:
Biogeochemistry, 124/1-3(2015-05-01), 371-385
Format:
Artikel (online)
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024 7 0 |a 10.1007/s10533-015-0103-6  |2 doi 
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245 0 0 |a Longitudinal shifts in dissolved organic matter chemogeography and chemodiversity within headwater streams: a river continuum reprise  |h [Elektronische Daten]  |c [Jennifer Mosher, Louis Kaplan, David Podgorski, Amy McKenna, Alan Marshall] 
520 3 |a We tested a long-standing hypothesis within river ecology, predicted by the River Continuum Concept, that dissolved organic matter (DOM) diversity decreases with stream order. We measured DOM molecular composition across three stream orders in the headwaters of well characterized forested catchments with ultrahigh-resolution mass spectrometry to assess DOM chemogeography and chemodiversity over the spatial scales of climatic regions and fluvial networks. Stream waters with similar dissolved organic carbon (DOC) concentrations in different climatic regions had distinctive DOM compositions, but shared 69.5% of the 3286 individual chemical formulae detected. DOM compositions common to all watersheds were characterized by abundant lignin-like and tannin-like molecules as well as carboxyl-rich alicyclic-like molecules (CRAM); 50% of all formulae were found in all streams. Of the roughly 700 unique chemical formulae within a given fluvial network, most were outside the CRAM region within a van Krevelen diagram and 78 to 95% were restricted to 1st-order streams where diffuse ground water sources surface, coalesce into a channel, and flow downstream. The 1st-order streams within a fluvial network also exhibited the highest formula diversity as well as the greatest numbers of formulae across a broad range of compound classes. 
540 |a Springer International Publishing Switzerland, 2015 
690 7 |a DOM  |2 nationallicence 
690 7 |a FT ICR-MS  |2 nationallicence 
690 7 |a Headwater streams  |2 nationallicence 
690 7 |a Carbon cycling  |2 nationallicence 
700 1 |a Mosher  |D Jennifer  |u Stroud Water Research Center, 970 Spencer Rd., 19311, Avondale, PA, USA  |4 aut 
700 1 |a Kaplan  |D Louis  |u Stroud Water Research Center, 970 Spencer Rd., 19311, Avondale, PA, USA  |4 aut 
700 1 |a Podgorski  |D David  |u Future Fuels Institute, Florida State University, 32310, Tallahassee, FL, USA  |4 aut 
700 1 |a McKenna  |D Amy  |u National High Magnetic Field Laboratory, Florida State University, 32310, Tallahassee, FL, USA  |4 aut 
700 1 |a Marshall  |D Alan  |u National High Magnetic Field Laboratory, Florida State University, 32310, Tallahassee, FL, USA  |4 aut 
773 0 |t Biogeochemistry  |d Springer International Publishing  |g 124/1-3(2015-05-01), 371-385  |x 0168-2563  |q 124:1-3<371  |1 2015  |2 124  |o 10533 
856 4 0 |u https://doi.org/10.1007/s10533-015-0103-6  |q text/html  |z Onlinezugriff via DOI 
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900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Mosher  |D Jennifer  |u Stroud Water Research Center, 970 Spencer Rd., 19311, Avondale, PA, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kaplan  |D Louis  |u Stroud Water Research Center, 970 Spencer Rd., 19311, Avondale, PA, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Podgorski  |D David  |u Future Fuels Institute, Florida State University, 32310, Tallahassee, FL, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a McKenna  |D Amy  |u National High Magnetic Field Laboratory, Florida State University, 32310, Tallahassee, FL, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Marshall  |D Alan  |u National High Magnetic Field Laboratory, Florida State University, 32310, Tallahassee, FL, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Biogeochemistry  |d Springer International Publishing  |g 124/1-3(2015-05-01), 371-385  |x 0168-2563  |q 124:1-3<371  |1 2015  |2 124  |o 10533