Flux of dissolved organic carbon and pore water through the substrate of a Spartina alterniflora marsh in North Carolina |
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| Institution: | 1. IonX Tech, LLC, Richland, WA, 99354, USA;2. V.L. Talrose Institute for Energy Problems of Chemical Physics, N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119334, Russia;3. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99352, USA;1. Policy Research Group, Department of Psychology, University of Cambridge, Downing Street, CB2 3EB Cambridge, United Kingdom;2. University of Maastricht, Minderbroedersberg 4-6, 6211 LK Maastricht, The Netherlands;3. Policy Research Group, Department of Psychology, University of Cambridge, Downing Street, CB2 3EB Cambridge, United Kingdom;1. Programa Interdisciplinar de Pós Graduação em Engenharia e Ciência dos Materiais, Universidade Federal do Paraná, PO Box 19011, CEP: 81531-980, Curitiba, Paraná, Brazil;2. Departamento de Estruturas Civis, Institutos Lactec, PO Box 19067, CEP: 81531-980, Curitiba, Paraná, Brazil;1. Estruturas Civis, Lactec, PO Box 19.067, CEP: 81531-980, Curitiba, Paraná, Brazil;2. FURNAS Centrais Elétricas S. A., Rodovia BR 153, km 510, Goiânia, Brazil;3. Lactec, Estruturas Civis, PO Box 19.067, CEP: 81531-980, Curitiba, Paraná, Brazil;4. Universidade Federal do Paraná, Departamento de Geologia, Centro Politécnico da UFPR, POBox 19001, CEP: 81.531-980, Curitiba, Paraná, Brazil;1. Institute of Plant and Animal Ecology UB RAS, 202 Marta 8th St., Yekaterinburg 620144, Russia;2. Laboratory of Tree-Ring Research, University of Arizona, 1215 E. Lowell St., Tucson, AZ 85721, USA |
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| Abstract: | The export of dissolved organic carbon (DOC) from a sandy substrate Spartina alterniflora marsh in North Carolina was studied from August 1982 to July 1983. DOC of the pore water was determined using a total organic carbon analyzer and was reliably estimated by measuring the absorbance of the pore water. DOC ranged between 1 and 6 mg l−1 and was highest during summer and lowest in winter. Based on hydraulic conductivity calculations, over 34 000 1 year−1 of pore water was exported through the 1×25 m transect perpendicular to a tidal creek. Most of this flux (over 90%) occurred within 2 m of the creek bank. Based on this pore water flux, belowground DOC export was only 1·52 g Cm−2 year−1. |
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