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- W2088393968 abstract "Research Article| June 01, 1999 Geologic nitrogen in terrestrial biogeochemical cycling JoAnn M. Holloway; JoAnn M. Holloway 1Land, Air & Water Resources, University of California, Davis, California 95616-8627, USA Search for other works by this author on: GSW Google Scholar Randy A. Dahlgren Randy A. Dahlgren 1Land, Air & Water Resources, University of California, Davis, California 95616-8627, USA Search for other works by this author on: GSW Google Scholar Author and Article Information JoAnn M. Holloway 1Land, Air & Water Resources, University of California, Davis, California 95616-8627, USA Randy A. Dahlgren 1Land, Air & Water Resources, University of California, Davis, California 95616-8627, USA Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (6): 567–570. https://doi.org/10.1130/0091-7613(1999)027<0567:GNITBC>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation JoAnn M. Holloway, Randy A. Dahlgren; Geologic nitrogen in terrestrial biogeochemical cycling. Geology 1999;; 27 (6): 567–570. doi: https://doi.org/10.1130/0091-7613(1999)027<0567:GNITBC>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Recent research implicates geologic nitrogen as a large and reactive pool of nitrogen that can have significant ecological effects. This study was conducted to determine the landscape distribution of geologic nitrogen and the fate of this nitrogen during rock to soil transformation in the lower Mokelumne River watershed located in the western Sierra Nevada of California. Mineralogy and chemistry were determined for six major lithologies in the study area to examine the spatial distribution of nitrogen in bedrock. In addition, soil samples were collected from two watersheds having high stream-water nitrate concentrations to determine the fate of nitrogen during weathering and soil formation. With the exception of diorite, all bedrock contained detectable concentrations of nitrogen: 153–1801 and 98–739 mg N kg−1 for metasedimentary and metavolcanic lithologies, respectively. A significant amount of nitrogen was released during soil formation: 2350 and 2570 kg N ha−1 for soils formed on greenstone and slate, respectively. This amount of nitrogen represents from 30% to 50% of the current soil nitrogen pool. In these ecosystems, nitrogen released from bedrock contributes to an excess of available nitrogen relative to biotic demands, leading to nitrate leaching and elevated concentrations of nitrate in stream water. Given the widespread occurrence of geologic nitrogen and the large global inventory of nitrogen contained within bedrock, the role of geologic nitrogen as a source of nitrogen for terrestrial biogeochemical cycling must be considered. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2088393968 title "Geologic nitrogen in terrestrial biogeochemical cycling" @default.
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