Literature Cited 
 
Academy, 1998. Impact of aquatic vegetation on water quality of the Delaware River Estuary.  
98-5F. by the Academy of Natural Sciences, Patrick Center for Environmental Research for 
the Delaware River Basin Commission, Philadelphia, PA, 109pp. 
An, S., Gardner, W.S., 2002. Dissimilatory nitrate reduction to ammonium (DNRA) as a nitrogen 
link, versus denitrification as a sink in a shallow estuary (Laguna Madre/Baffin Bay, Texas). 
Mar. Ecol. Prog. Ser. 237: 41-50. 
Anderson, I.C., Neubauer, S.C., Neikirk, B.B., Wetzel, R.L., 1998. Exchanges of carbon and 
nitrogen between tidal freshwater wetlands and adjacent tributaries. Final Report for the 
Virginia Coastal Resources Management Program, Virginia Department of Environmental 
Quality, Richmond, VA, 56pp. 
Anderson, I.C., Tobias, C.R., Neikirk, B.B., Wetzel, R.L., 1997. Development of a process-based 
nitrogen mass balance model for a Virginia (USA) Spartina alterniflora Salt Marsh: 
Implications for net DIN flux. Mar. Ecol. Prog. Ser. 159, 3-27. 
Arndt, S., Jørgensen, B.B., LaRowe, D.E., Middelburg, J.J., Pancost, R.D., Regnier, P., 2013. 
Quantifying the degradation of organic matter in marine sediments: a review and 
synthesis. Earth-Sci. Rev. 123:53–86. doi:10.1016/j.earscirev.2013.02.008 
Arrigoni, A., Findlay, S., Fischer, D., Tockner, K., 2008. Predicting carbon and nutrient 
transformations in tidal freshwater wetlands of the Hudson River. Ecosystems 11(5): 790-
802. 
Baldock, J.A., Masiello, C.A., Gelinas. Y., Hedges, J.I., 2004. Cycling and composition of organic 
matter in terrestrial and marine ecosystems. Mar. Chem. 92: 39–64. doi: 
10.1016/j.marchem.2004.06.016 
Baldwin, A.H., 2013. Nitrogen and phosphorus differentially affect annual and perennial plants 
in tidal freshwater and oligohaline wetlands. Estuaries and Coasts 36(3): 547-558. 
Bartlett, K.B., Bartlett, D.S., Harriss, R.C., Sebacher, D.I., 1987. Methane emissions along a salt 
marsh salinity gradient. Biogeochemistry 4: 183-202. 
Bauer, J.E., Cai, W.J., Raymond, P.A., Bianchi, T.S., Hopkinson, C.S., Regnier, P.A.G., 2013. The 
changing carbon cycle of the coastal ocean. Nature 504: 61–70. doi: 10.1038/nature12857 
Bellis, V.J., Gaither, A.C., 1985. Seasonality of aboveground and belowground biomass for six 
salt marsh plant species. Journal of the Elisha Mitchell Scientific Society. 101(2): 95-109.  
Benner, M.A., Moran, M.A., Hodson, R.E., 1985. Effects of pH and plant source on lignocellulose 
biodegredation rates in two wetland ecosystems, the Okefenokee Swamp and a Georgia 
salt marsh. Limnol. Oceanogr. 30, 489-499. 
Bernhardt, E.S., Blaszczak, J.R., Ficken, C.D., Fork, M.L., Kaiser, K.E., Seybold, E.C., 2017. 
Control points in ecosystems: moving beyond the hot spot hot moment concept. 
Ecosystems 20(4): 665-682. 
Blair, N.E., Aller, R.C., 2012. The fate of terrestrial organic carbon in the marine environment. 
Ann. Rev. Marine Sci. 4: 401-423. 
Booth, P.M., 1989. Nitrogen and phosphorus cycling strategies in two tidal freshwater 
macrophytes, Peltandra virginica and Spartina cynosuroides. Ph.D. Dissertation, The 
College of William and Mary. Gloucester Point, VA, 264pp. 
Bosse, U., Frenzel, P., 1998. Methane emissions from rice microcosms: The balance of 
production, accumulation and oxidation, Biogeochemistry 41: 199–214. 
Bowden, W.B., Vorosmarty, C.J., Morris, J.T., Peterson, B.J., Hobbie, J.E., Steudler, P.A., Moore, 
B., 1991. Transport and processing of nitrogen in a tidal freshwater wetland. Water Resour. 
Res. 27, 389–408. 
Boullion, S., Boschker, H.T.S., 2006. Bacterial carbon sources in coastal sediments: a cross-
system analysis based on stable isotope data of biomarkers. Biogeosciences 3: 175-185. 
Bowden, W.B., 1984. Nitrogen and phosphorus in the sediments of a tidal, freshwater marsh in 
Massachusetts. Estuaries 7: 108-118. 
Bowden, W.B., 1986. Nitrification, nitrate reduction, and nitrogen immobilization in a tidal 
fresh-water marsh sediment. Ecology 67: 88-99. 
Boye, K., Noël, V., Tfaily, M.M., Bone, S.E., Williams, K.H., Bargar, J.R., Fendorf, S., 2017. 
Thermodynamically controlled preservation of organic carbon in floodplains. Nature 
Geoscience 10:415-419. 
Bridgham, S.D., Megonigal, J.P., Keller, J.K., Bliss, N.B., Trettin, C., 2006. The carbon storage of 
North American wetlands. Wetlands 26: 889-916. 
Bridgham, S.D., Moore, T.R., Richardson, C.J., Roulet, N.T., 2014. Errors in greenhouse forcing 
and soil carbon sequestration estimates in freshwater wetlands: A comment on Mitsch et 
al.(2013). Landscape ecology 29(9): 1481-1485. 
Brunet, R.C., Garcia-Gil, L.J., 1996. Sulfide-induced dissimilatory nitrate reduction to ammonia in 
anaerobic freshwater sediments. FEMS Microbiol. Ecol. 21: 131-138. 
Bukaveckas, P.A., Beck, M., Devore, D., Lee, W.M., 2017. Climatic variability and its role in 
regulating C, N and P retention in the James River Estuary. Estuarine, Coastal and Shelf 
Science. manuscript in press. 
Bukaveckas, P.A., Wood, J., 2014. Nitrogen retention in a restored tidal stream (Kimages Creek, 
VA) assessed by mass balance and tracer approaches. Journal of Environmental Quality 
43(5): 1614-1623. 
Bullock, A., Sutton-Grier, A., Megonigal, J., 2013. Anaerobic Metabolism in Tidal Freshwater 
Wetlands: III. Temperature Regulation of Iron Cycling. Estuaries and Coasts. 36 (3): 482-
490.  doi: 10.1007/s12237-012-9536-5 
Burkett, V., Ritschard, R., McNulty, S., O’Brien, J.J., Abt, R., Jones, J., Hatch, U., Murray, B., 
Jagtop, S., Cruise, J., 2001. Potential consequences of climate change variability and change 
for the southeastern United States. In: Climate change impacts on the United States: The 
potential consequences of climate variability and change. Cambridge University Press, 
Cambridge, pp. 137-164. 
Burton, K., Neubauer S.C., in prep. Species-specific and dose-dependent responses of tidal 
freshwater marsh vegetation to nitrogen and phosphorus enrichment. for submission to 
Wetlands. 
Cai, W.J., 2011. Estuarine and coastal ocean carbon paradox: CO2 sinks or sites of terrestrial 
carbon incineration? Ann. Rev. Marine Sci. 3: 123–145. doi:10.1146/annurev-marine-
120709-142723 
Campana, M.L., 1998. The effect of Phragmites australis invasion on community processes in a 
tidal freshwater marsh. M.S. Thesis, The College of William and Mary, Gloucester Point, VA, 
88pp. 
Caraco, N.F., Cole, J.J., Likens, G.E., 1989. Evidence for sulphate-controlled phosphorus release 
from sediments of aquatic systems. Nature 341: 395–413. 
Chambers, R.M., 1992. A fluctuating water-level chamber for biogeochemical experiments in 
tidal marshes. Estuaries 15:53–58. 
Chambers, R.M., Fourqurean, J.W., 1991. Alternative criteria for assessing nutrient limitation of 
a wetland macrophyte (Peltandra-virginica (L) Kunth). Aquat. Bot. 40: 305-320. 
Chambers, R.M., Odum, W.E., 1990. Porewater oxidation, dissolved phosphate and the iron 
curtain: Iron-phosphorus relations in tidal freshwater marshes. Biogeochemistry 10: 37–52. 
Chambers, L.G., Reddy, K.R., Osborne, T.Z., 2011. Short-term response of carbon cycling to 
salinity pulses in a freshwater wetland. Soil Sci. Soc. Am. J. 75(5): 2000-2007. 
Chanton, J.P., Martens, C.S., Kelley, C.A., 1989. Gas transport from methane-saturated, tidal 
freshwater and wetland sediments. Limnol. Oceanogr. 34: 807–819. 
Chapin, F.S., Woodwell, G.M., Randerson, J.T., Rastetter, E.B., Lovett, G.M., Baldocchi, D.D., 
Clark, D.A., Harmon, M.E., Schimel, D.S., Valentini, R., Wirth, C. and 18 other authors., 
2006. Reconciling carbon-cycle concepts, terminology, and methods. Ecosystems 9(7): 
1041-1050. 
Christensen, P.B., Rysgaard, S., Sloth, N.P., Dalsgaard, T., Scheaerter, S., 2000. Sediment 
mineralization, nutrient fluxes, denitrification, and dissimilatory nitrate reduction to 
ammonium in an estuarine fjord with sea cage trout farms. Aquat. Microb. Ecol. 21: 73-84. 
Cornwell, J.C., Kemp, W.M., Kana, T.M., 1999. Denitrification on coastal ecosystems: methods, 
environmental controls, and ecosystem level controls, a review. Aquat. Ecol. 33: 41–54. 
Courtwright, J., and Findlay S.E.G., 2011. Effects of microtopography on hydrology, 
physicochemistry, and vegetation in a tidal swamp of the Hudson River. Wetlands 31(2): 
239-249. 
Craft, C.B., 2007. Freshwater input structures soil properties, vertical accretion, and nutrient 
accumulation of Georgia and U.S. tidal marshes. Limnol. Oceanogr. 52: 1220–1230. 
Craft, C., Clough, J., Ehman, J., Joye, S., Park, R., Pennings, S., Guo, H., Machmuller, M., 2009. 
Forecasting the effects of accelerated sea‐level rise on tidal marsh ecosystem services. 
Frontiers in Ecology and the Environment 7(2): 73-78. 
Dahl, T.E., 1999. South Carolina’s wetlands—status and trends 1982–1989. Department of the 
Interior, US Fish and Wildlife Service, Washington, D.C. 58 pp. 
Darke, A.K., Megonigal, J.P., 2003. Control of sediment deposition rates in two mid-Atlantic 
Coast tidal freshwater wetlands. Estuar. Coast. Shelf Sci. 57: 255-268. 
Day, F.P., 1982. Litter decomposition rates in the seasonally flooded Great Dismal Swamp. 
Ecology 63: 670-678. 
Dausse, A., Garbutt, A., Norman, L., Papadimitriou, S., Jones, L.M., Robins, P.E., Thomas, D.N., 
2012. Biogeochemical functioning of grazed estuarine tidal marshes along a salinity 
gradient. Estuar. Coast Shelf S. 100: 83-92. doi: 10.1016/j.ecss.2011.12.037. 
DeLaune, R.D., Smith, C.J., Sarafyan, M.N., 1986. Nitrogen cycling in a freshwater marsh of 
Panicum hemitomon on the deltaic plain of the Mississippi River. J Ecol. 74: 249-256. 
Elsey-Quirk, T., Smyth, A., Piehler, M., Mead, J.V., Velinsky, D.J., 2013. Exchange of nitrogen 
through an urban tidal freshwater wetland in Philadelphia, Pennsylvania. J. Environ. Qual. 
42(2): 584-595. 
Ensign, S.H., Hupp, C.R., Noe, G.B., Krauss, K.W., Stagg, C.L., 2014a. Sediment accretion in tidal 
freshwater forests and oligohaline marshes of the Waccamaw and Savannah Rivers, USA. 
Estuaries and Coasts 37:1107-1119. DOI: 10.1007/s12237-013-9744-7. 
Ensign, S.H., Noe, G.B., Hupp, C.R., 2014b. Linking channel hydrology with riparian wetland 
accretion in tidal rivers. Journal of Geophysical Research, Earth Surface 119:28-44. DOI: 
10.1002/2013JF002737. 
Ensign, S.H., Piehler, M.F., Doyle, M.W., 2008. Riparian zone denitrification affects nitrogen flux 
through a tidal freshwater river. Biogeochemistry, 91(2-3): 133-150. 
Ensign, S.H., Siporin, K., Piehler, M., Doyle, M., Leonard, L., 2013. Hydrologic versus 
biogeochemical controls of denitrification in tidal freshwater wetlands. Estuar. Coasts 36(3): 
519-532. 
Enriquez, S., Duarte, C. M., Sand-Jensen, K., 1993. Patterns in decomposition rates among 
photo- synthetic organisms: the importance of detritus C:N:P content. Oceologia 94, 457–
471. 
Epp, R.G., Erickson, D.J., Paul, N.D., Sulzberger, B., 2007. Interactive effects of solar UV radiation 
and climate change on biogeochemical cycling. Photoch. Photobio. Sci. 6: 286-300. 
Fazzolari, É., Nicolardot, B., Germon, J.C., 1998. Simultaneous effects of increasing levels of 
glucose and oxygen partial pressures on denitrification and dissimilatory nitrate reduction 
to ammonium in repacked soil cores. Eur. J. Soil Biol. 34, 47–52. 
Findlay, S., Fischer, D., 2013. Ecosystem attributes related to tidal wetland effects on water 
quality. Ecology 94(1): 117-125. 
Findlay, S., Howe, K., Austin, H.K., 1990. Comparison of detritus dynamics in two tidal 
freshwater wetlands. Ecology 71: 288-295. 
Findlay, S., Sinsabaugh, R.L., Fischer, D.T., Franchini, P., 1998. Sources of dissolved organic 
carbon supporting planktonic bacterial production in the tidal freshwater Hudson River. 
Ecosystems 1, 227-239. 
Frankignoulle, M., Abril, G., Borges, A., Bourge, I., Canon, C., Delille, B., Libert, E., Théate, J., 
1998. Carbon dioxide emission from European estuaries. Science 282: 434-436. 
Frankignoulle, M., Bourge, I., Wollast, R., 1996. Atmospheric CO2 fluxes in a highly polluted 
estuary (the Scheldt), Limnology and Oceanography, 41, doi: 10.4319/lo.1996.41.2.0365. 
Freeman, C., Ostle, N., Kang, H., 2001. An enzymatic 'latch' on a global carbon store. Nature 
409:149. 
Frolking, S., Roulet, N., Fuglestvedt, J., 2006. How northern peatlands influence the Earth’s 
radiative budget: Sustained methane emission versus sustained carbon sequestration. J 
Geophys. Res. 111:G01008. doi:10.1029/2005JG000091. 
Frost, J.W., Schleicher, T., Craft, C.B., 2009. Nitrogen limits primary and secondary production in 
a Georgia (USA) tidal freshwater marsh. Wetlands 29: 196-203. 
Furumai, H., Kawasaki, T., Futuwatari, T., Kusuda, T., 1988. Effect of salinity on nitrification in a 
tidal river. Water Sci. Technol. 20: 165-174. 
Gilbert, H., 1990. Éléments nutritifs (N et P), métaux lourds (Zn, Cu, Pb et Hg) et productivité 
végétale dans un marias intertidal d'eau douce, Québec (Québec). Can. J. Bot. 68: 857-863. 
Grant, R.R., Jr., Patrick, R., 1970. Tinicum Marsh as a water purifier. In. Two Studies of Tinicum 
Marsh. The Conservation Foundation: Washington, D.C., USA, pp. 105-123. 
Greene, S.E., 2005. Nutrient removal by tidal fresh and oligohaline marshes in a Chesapeake 
Bay tributary. M.S. Thesis, University of Maryland. Solomons, MD, USA. 149 pp. 
Greiner, M., Hershner, C., 1998. Analysis of wetland total phosphorus retention and watershed 
structure. Wetlands 18:142-149. 
Gribsholt, B., Boschker, H.T.S., Struyf, E., Andersson, M., Tramper, A., De Brabandere, L., van 
Damme, S., Brion N., Meire, P., Dehairs, F., Middelburg, J.J., Heip, C.H.R., 2005. Nitrogen 
processing in a tidal freshwater marsh: A whole-ecosystem N-15 labeling study. Limnol. 
Oceanogr. 50: 1945-1959. 
Gribsholt, B., Struyf, E., Tramper, A., Andersson, M.G.I., Brion, N., De Brabandere, L., van 
Damme, S., Meire, P., Middelburg, J.J., Dehairs, F., Boschker, H.T.S., 2006. Ammonium 
transformation in a nitrogen-rich tidal freshwater marsh. Biogeochemistry 80: 289–298. 
Gribsholt, B., Struyf, E., Tramper, A., De Brabandere, L., Brion, N., van Damme, S., Meire, P., 
Dehairs, F., Middelburg, J.J., Boschker, H.T.S., 2007. Nitrogen assimilation and short term 
retention in a nutrient-rich tidal freshwater marsh -- a whole ecosystem 15N enrichment 
study. Biogeosciences 4: 11–26. 
Groszkowski, K.M., 1995. Denitrification in a tidal freshwater marsh. Senior Thesis, Harvard 
College. Cambridge, MA, USA. 85 pp. 
Hedges, J.I., Keil, R.G., 1995. Sedimentary organic matter preservation: an assessment and 
speculative synthesis. Mar. Chem. 49: 81–115. 
Heinle, D.R., Flemer, D.A., 1976. Flows of materials between poorly flooded tidal marshes and 
an estuary. Mar. Biol. 35: 359-373. 
Herbert, E.R., Boon, P., Burgin, A.J., Neubauer, S.C., Franklin, R.B., Ardón, M., Hopfensperger, 
K.N., Lamers, L.P.M. , Gell, P., 2015. A global perspective on wetland salinization: Ecological 
consequences of a growing threat to freshwater wetlands. Ecosphere. 6(10): 1-43. doi: 
10.1890/ES14-00534.1.  
Hines, J., Megonigal, J.P., Denno, R.F., 2006. Nutrient subsidies to belowground microbes 
impact aboveground food web interactions. Ecology 87: 1542–1555. 
Hoffman, J.C., Bronk, D.A., 2006. Interannual variation in stable carbon and nitrogen isotope 
biogeochemistry of the Mattaponi River, Virginia. Limnol. Oceanogr. 51: 2319-2332. 
Hopkinson, C.S., 1992. A comparison of ecosystem dynamics in freshwater wetlands. Estuaries 
15: 549-562. 
Howarth, R.W., Marine, R., Cole, J.J., 1988. Nitrogen-fixation in fresh-water, estuarine, and 
marine ecosystems. 2. Biogeochemical controls. Limnol. Oceanogr. 33: 688-701. 
Howarth, R.W., Schneider, R., Swaney, D., 1996. Metabolism and organic carbon fluxes in the 
tidal freshwater Hudson River. Estuaries 19: 848-865. 
Howes, B.L., Dacey, J.W.H., King, G.M., 1984. Carbon flow through oxygen and sulfate reduction 
pathways in salt marsh sediments. Limnol. Oceanogr. 29: 1037-1051. 
Huang, X.Q., Morris, J.T., 2003. Trends in phosphatase activity along a successional gradient of 
tidal freshwater marshes on the Cooper River, South Carolina. Estuaries 26: 1281-1290. 
Huang, X.Q., Morris, J.T., 2005. Distribution of phosphatase activity in marsh sediments along 
an estuarine salinity gradient. Mar. Ecol. Prog. Ser. 292: 75-83. 
Hunsinger, G.B., Mitra, S., Findlay, S.E.G., Fischer, D.T., 2010. Wetland-driven shifts in 
suspended particulate organic matter composition of the Hudson River estuary, New York. 
Limnol. Oceanogr. 55: 1653–1667, doi: 10.4319/lo.2010.55.4.1653. 
Hunsinger, G.B., Mitra, S., Findlay, S.E.G., Fischer, D.T., 2012. Littoral-zone influences on 
particulate organic matter composition along the freshwater-tidal Hudson River, New York. 
Limnol. Oceanogr., 57(5): 1303–1316. doi:10.4319/lo.2012.57.5.1303 
Ingvorsen, K., Jørgensen, B., 1984. Kinetics of sulfate uptake by freshwater and marine species 
of Desulfovibrio. Arch. Microbiol. 139: 61–66. 
Jordan, T.E., Cornwell, J.C., Boynton, W.R., Anderson, J.T., 2008. Changes in phosphorus 
biogeochemistry along an estuarine salinity gradient: The iron conveyer belt. Limnol. 
Oceanogr. 53(1): 172-184. 
Joye, S.B., Hollibaugh, J.T., 1995. Influence of sulfide inhibition of nitrification on nitrogen 
regeneration in sediments. Science 270: 623-625. 
Kalber, F.A., Jr., 1959. A hypothesis on the role of tide-marshes in estuarine productivity. 
Estuarine Bulletin. 4:3. 
Keiluweit, M., Nico, P.S., Kleber, M., Fendorf, S., 2016. Are oxygen limitations under recognized 
regulators of organic carbon turnover in upland soils? Biogeochemistry. doi: 
10.1007/s10533-015-0180-6 
Keller, J.K., Bridgham, S.D., 2007. Pathways of anaerobic carbon cycling across an 
ombrotrophic–minerotrophic peatland gradient. Limnol. Oceanogr. 52: 96–107. 
Keller, J., Sutton-Grier, A., Bullock, A., Megonigal, J.P., 2013. Anaerobic metabolism in tidal 
freshwater wetlands: I. Plant removal effects on iron reduction and methanogenesis. 
Estuar. Coasts 36 (3): 457-470. doi: 10.1007/s12237-012-9527-6 
Keller, J.K., Takagi, K.K., 2013. Solid-phase organic matter reduction regulates anaerobic 
decomposition in bog soil. Ecosphere 4(5):54.  
Keller, J.K., Weisenhorn, P.B., Megonigal, J.P., 2009. Humic acids as electron acceptors in 
wetland decomposition. Soil Biol. Biochem. 41(7): 1518-1522. doi 
10.1016/j.soilbio.2009.04.008 
Kelley, C.A., Martens, C.S., Chanton, J.P., 1990. Variations in sedimentary carbon 
remineralization rates in the White Oak River estuary, North Carolina. Limnol. Oceanogr. 
35: 372-383. 
Kelley, C.A., Martens, C.S., Ussler, W.I., 1995. Methane dynamics across a tidally flooded 
riverbank margin. Limnol. Oceanogr. 40: 1112-1129. 
Khan, H., Brush, G.S., 1994. Nutrient and metal accumulation in a fresh-water tidal marsh. 
Estuaries 17:345-360. 
Kögel-Knabner, I., 2002. The macromolecular organic composition of plant and microbial 
residues as inputs to soil organic matter. Soil Biol. Biochem. 34: 139–162. 
Krauss, K.W., Whitbeck, J.L., 2012. Soil greenhouse gas fluxes during wetland forest retreat 
along the lower Savannah River, Georgia (USA). Wetlands 32(1): 73-81. 
Krauss, K.W., Perez, B.C., Holm Jr., G.O., McWhorter, D.E., Cormier, N., Moss. R.F., Johnson, D.J., 
Neubauer, S.C., Raynie, R.C., 2016. Component greenhouse gas fluxes and radiative forcing 
from degrading and healthy coastal deltaic marshes: Pairing chamber techniques and eddy 
covariance. J. Geophys. Res.-Biogeo. 121: 1503-1521. doi: 10.1002/2015JG003224. 
Lamers, L.P.M., Dolle, G., Van Den Berg, S.T.G., Van Delft, S.P.J., Sebastiaan, P.J., Roelofs, J.M., 
2001. Differential responses of freshwater wetland soils to sulphate pollution. 
Biogeochemistry 55: 87-102.  
Lamers, L.P., Govers, L.L., Janssen, I.C., Geurts, J.J., Van der Welle, M.E., Van Katwijk, M.M., Van 
der Heide, T., Roelofs, J.G. and Smolders, A.J., 2013. Sulfide as a soil phytotoxin—a review. 
Front. Plant Sci. 4: 268. doi: 10.3389/fpls.2013.00268 
LaRowe, D.E., Van Cappellen, P., 2011. Degradation of natural organic matter: a thermodynamic 
analysis. Geochim. Cosmochim. Ac. 75: 2030–2042. 
Lee, D.Y., De Meo, O.A., Tillett, A.L., Thomas, R.B., Neubauer, S.C., 2016. Design and 
construction of an automated irrigation system for simulating saltwater intrusion in a tidal 
freshwater wetland. Wetlands 36: 889-898. doi: 10.1007/s13157-016-0801-4. 
Limburg, K.E., Moran, M.A., McDowell, W., (Editors), 1986. The Hudson River Ecosystem. 
Springer-Verlag, New York, NY, USA. 331 pp. 
Loomis, M.J., Craft, C.B., 2010. Carbon Sequestration and Nutrient (Nitrogen, Phosphorus) 
Accumulation in River-Dominated Tidal Marshes, Georgia, USA. Soil Sci. Soc. Am. J. 
74:1028-1036. doi:10.2136/sssaj2009.0171 
Lombardi, J.E., Epp, M. A., Chanton, J.P., 1997. Investigation of the methylfluoride technique for 
determining rhizospheric methane oxidation, Biogeochemistry 36: 153– 172. 
Lovley, D.R., Phillips, E.J.P., 1986. Availability of ferric iron for microbial reduction in bottom 
sediments of the freshwater tidal Potomac River. Appl. Environ. Microb. 52: 751-757. 
Lovley, D.R., Phillips, E.J.P., 1987. Rapid assay for microbially reducible ferric iron in aquatic 
sediments. Appl. Environ. Microb. 53: 1536-1540. 
Ma, S., Luther, G.W.I., Keller, J., Madison, A.S., Metzger, E., Emerson, D., Megonigal, J.P., 2008. 
Solid-state Au/Hg microelectrode for the investigation of Fe and Mn cycling in a freshwater 
wetland: implications for methane production. Electroanalysis 20: 233-239. 
MacFarlane, G.T., Hebert, R.A., 1984. Effect of oxygen tension, salinity, temperature, and 
organic matter concentration on the growth and nitrifying activity of an estuarine strain of 
Nitrosomonas. FEMS Microbiol. Lett. 23: 107-111. 
Magalhães, C.M., Joye, S.B., Moreira, R.M., Wiebe, W.J., Bordalo, A.A., 2005. Effect of salinity 
and inorganic nitrogen concentrations on nitrification and denitrification rates in intertidal 
sediments and rocky biofilms of the Douro River estuary, Portugal. Water Res. 39: 1783-
1794. 
Malone, T.C., Boicourt, W.C., Cornwell, J.C., Harding, L.W., Jr., Stevenson, J.C., 2003. The 
Choptank River: A mid-Chesapeake Bay index site for evaluating ecosystem responses to 
nutrient management. Final report to the Coastal Intensive Site Network (CISNet) Horn 
Point Environmental Laboratory, University of Maryland, Cambridge, MD, USA. 64 pp. 
Marton, J.M., Herbert, E.R., Craft, C.B., 2012. Effects of salinity on denitrification and 
greenhouse gas production from laboratory-incubated tidal forest soils. Wetlands 32(2): 
347-357. 
McClain, M.E., Boyer, E.W., Dent, C.L., Gergel, S.E., Grimm, N.B., Groffman, P.M., Hart, S.C., 
Harvey, J.W., Johnston, C.A., Mayorga, E., McDowell, W.H., 2003. Biogeochemical hot 
spots and hot moments at the interface of terrestrial and aquatic ecosystems. Ecosystems 
6(4): 301-312. 
Meiggs, D., Taillefert, M., 2011. The effect of riverine discharge on biogeochemical processes in 
estuarine sediments. Limnol. Oceanogr. 56:1797–1810 
Megonigal, J.P., Hines, M.E., Visscher, P.T., 2004. Anaerobic metabolism: linkages to trace gases 
and aerobic metabolism. In W.H. Schlesinger (Editor), Biogeochemistry. Elsevier-Pergamon, 
Oxford, UK, pp. 317-424. 
Megonigal, J.P., Schlesinger, W.H., 1997. Enhanced CH4 emissions from a wetland soil exposed 
to elevated CO2. Biogeochemistry 37: 77-88. 
Megonigal, J.P., Schlesinger, W.H., 2002. Methane-limited methanotrophy in tidal freshwater 
swamps. Global Biogeochem. Cy. 16: 1062, doi: 10.1029/2001GB001594. 
Megonigal, J.P., Whalen, S.C., Tissue, D.T., Bovard, B.D., Albert, D.B., Allen, A.S., 1999. A plant–
soil–atmosphere microcosm for tracing radiocarbon from photosynthesis through 
methanogenesis. Soil Sci. Soc. Am. J. 63: 665-671. 
Merrill, J.Z., 1999. Tidal Freshwater Marshes as Nutrient Sinks: Particulate Nutrient Burial and 
Denitrification. Ph.D. Dissertation, University of Maryland. College Park, MD, USA. pp. 342  
Merrill, J.Z., Cornwell, J.C., 2000. The role of oligohaline marshes in estuarine nutrient cycling. In 
M. Weinstein D.A. Kreeger (Editors), Concepts and controversies in tidal marsh ecology. 
Kluwer Press, Dordrecht, Netherlands, pp. 425-441. 
McKellar, H.N., Tufford, D.L., Alford, M.C., Saroprayogi, P., Kelley, B.J., Morris, J.T., 2007. Tidal 
nitrogen exchanges across a freshwater wetland succession gradient in the upper Cooper 
River, South Carolina. Estuar. Coasts 30: 989.  
Morris, J.T., Bowden, W.B., 1986. A mechanistic, numerical model of sedimentation, 
mineralization, and decomposition for marsh sediments. Soil Sci. Soc. Am. J. 50: 96-105. 
Morris, J.T., Sundareshwar, P.V., Nietch, C.T., Kjerfve, B., Cahoon, D.R., 2002. Responses of 
coastal wetlands to rising sea level. Ecology 83: 2869-2877. 
Morrissey, E.M., Gillespie, J.L., Morina, J.C., Franklin, R.B., 2014. Salinity affects microbial 
activity and soil organic matter content in tidal wetlands. Glob. Change Biol. 20: 1351–
1362. doi:10.1111/gcb.12431 
Morse, J.L., Megonigal, J.P., Walbridge, M.R., 2004. Sediment nutrient accumulation and 
nutrient availability in two tidal freshwater marshes along the Mattaponi River, Virginia, 
USA. Biogeochemistry 69: 175-206. 
Neubauer, S.C., 2000. Carbon dynamics in a tidal freshwater marsh. Ph.D. Dissertation. The 
College of William and Mary, Gloucester Point, VA, USA. 221 pp. 
Neubauer, S.C., 2008. Contributions of mineral and organic components to tidal freshwater 
marsh accretion. Estuar. Coast. Shelf Sci.. 78: 78-88. 
Neubauer, S.C., 2013a. Carbon sequestration in wetland soils: Importance, mechanisms, and 
future prospects. Society of Wetland Scientists Research Brief. Oct 2013-0001. 4 pp. 
Neubauer, S.C., 2013b. Ecosystem responses of a tidal freshwater marsh experiencing saltwater 
intrusion and altered hydrology. Estuar. Coasts 36: 491-507 doi: 10.1007/s12237-011-9455-
x. 
Neubauer, S.C., 2014. On the challenges of modeling the net radiative forcing of wetlands: 
Reconsidering Mitsch et al. (2013). Landscape Ecol. 29: 571-577. doi: 10.1007/s10980-014-
9986-1. 
Neubauer, S.C., Anderson, I.C., 2003. Transport of dissolved inorganic carbon from a tidal 
freshwater marsh to the York River estuary. Limnol. Oceanogr. 48: 299-307. 
Neubauer, S.C., Anderson, I.C., Constantine, J.A., Kuehl, S.A., 2002. Sediment deposition and 
accretion in a mid-Atlantic (USA) tidal freshwater marsh. Estuar. Coast. Shelf Sci. 54: 713-
727. 
Neubauer, S.C., Anderson, I.C., Neikirk, B.B., 2005a. Nitrogen cycling and ecosystem exchanges 
in a Virginia tidal freshwater marsh. Estuaries 28: 909-922. 
Neubauer, S.C., Craft, C.B., 2009. Global change and tidal freshwater wetlands: Scenarios and 
impacts. p. 253-266 in A. Barendregt, D.F. Whigham, A.H. Baldwin (Editors), Tidal 
Freshwater Wetlands. Backhuys Publishers, Leiden, The Netherlands. 
Neubauer, S.C., Emerson, D., Megonigal., J.P., 2008. Microbial oxidation and reduction of iron in 
the root zone and influences on metal mobility. In A.Violante, P.M. Huang, G.M. Gadd 
(Editors), Biophysico-Chemical Processes of Heavy Metals and Metalloids in Soil 
Environments. John Wiley & Sons, Hoboken, NJ, USA, pp. 339-371. 
Neubauer, S.C., Franklin, R.B., Berrier, D.J., 2013. Saltwater intrusion into tidal freshwater 
marshes alters the biogeochemical processing of organic carbon. Biogeosciences 10: 8171-
8183. doi: 10.5194/bg-10-8171-2013. 
Neubauer, S.C., Givler, K., Valentine, S., Megonigal, J.P., 2005b. Seasonal patterns and plant-
mediated controls of subsurface wetland biogeochemistry. Ecology 86: 3334-3344. 
Neubauer, S.C., Megonigal, J.P., 2015. Moving beyond global warming potentials to quantify the 
climatic role of ecosystems. Ecosystems 18: 1000-1013. doi: 10.1007/s10021-015-9879-4. 
Neubauer, S.C., Miller, W.D., Anderson, I.C., 2000. Carbon cycling in a tidal freshwater marsh 
ecosystem: a carbon gas flux study. Mar. Ecol. Prog. Ser. 199:13-30. 
Neubauer, S.C., Toledo-Durán, G.E., Emerson, D., Megonigal, J.P., 2007. Returning to their 
roots: Iron-oxidizing bacteria enhance short-term plaque formation in the wetland-plant 
rhizosphere. Geomicrobiol. J. 24: 65-73. 
Nevin, K.P., Lovley, D.R., 2000. Potential for nonenzymatic reduction of Fe(III) via electron 
shuttling in subsurface sediments. Environ. Sci. Technol. 34: 2472-2478. 
Nietch, C.T., 2000. Carbon biogeochemistry in tidal marshes of South Carolina: The effect of 
salinity and nutrient availability on marsh metabolism in estuaries with contrasting 
histories of disturbance and river influence. Ph.D. Dissertation, University of South 
Carolina. Columbia, SC, USA. 156 pp. 
Nijburg, J.W., Coolen, M.J.L., Gerards, S., Gunnewiek, P.J.A.K., Laanbroek, H.J., 1997. Effects of 
nitrate availability and the presence of Glyceria maxima on the composition and activity of 
the dissimilatory nitrate-reducing bacterial community. Appl. Environ. Microb. 63: 931-937. 
Nixon, S.W., 1980. Between coastal marshes and coastal waters: a review of twenty years of 
speculation and research on the role of salt marshes in estuarine productivity and water 
chemistry. In P. Hamilton, K. MacDonald (Editors), Estuarine and Wetland Processes. 
Plenum Press, New York, NY, USA, pp. 438-525. 
Noe, G.B., Hupp, C.R., Bernhardt, C.E., Krauss, K.W., 2016. Contemporary deposition and long-
term accumulation of sediment and nutrients by tidal freshwater forested wetlands 
impacted by sea level rise. Estuar. Coasts 39:1006-1019. DOI: 10.1007/s12237-016-0066-4 
Noe, G.B., Krauss, K.W., Lockaby, B.G., Conner, W.H., Hupp, C.R., 2013. The effect of 
increasing salinity and forest mortality on soil nitrogen and phosphorus mineralization in 
tidal freshwater forested wetlands. Biogeochemistry 114(1-3): 225-244. 
Odum, E.P., 1968. A research challenge: Evaluating the productivity of coastal and estuarine 
water. In Proceedings of the Second Sea Grant Conference. University of Rhode Island, 
Kingston, RI, USA, pp. 63-64. 
Odum,W.E., 1988. Comparative Ecology of Tidal Freshwater and Salt Marshes. Annu. Rev. Ecol. 
Syst. 19(1): 147-176 
Oremland, R.S., Marsh, L.M., Polcin, S., 1982. Methane production and simultaneous sulfate 
reduction in anoxic salt marsh sediments. Nature 296: 143–145. 
Palmer, M.A., Reidy Liermann, C.A., Nilsson, C., Flörke, M., Alcamo, J., Lake, P.S., Bond, N., 2008. 
Climate change and the world’s river basins: anticipating management options. Front. Ecol. 
Environ. 6: 81-89. 
Paludan, C., Morris, J.T., 1999. Distribution and speciation of phosphorus along a salinity 
gradient in intertidal marsh sediments. Biogeochemistry 45: 197-221. 
Pasternack, G.B., 2009. Hydrogeomorphology and sedimentation in tidal freshwater wetlands. 
In A. Barendregt, D. Whigham, A. Baldwin (Editors), Tidal Freshwater Wetlands. Backhuys 
Publishers, The Netherlands. 
Phillips, P.J., Hanchar, D.W., 1996. Water-quality assessment of the Hudson River basin in New 
York and adjacent states. Water-Resources Investigations Report 96-4065. U.S. Geological 
Survey, Troy, NY, USA. 76 pp. 
Poffenbarger, HJ, BA Needelman, JP Megonigal (2011). Salinity influence on methane emissions from 
tidal marshes. Wetlands. 31: 831-842. doi 10.1007/s13157-011-0197-0 
Portnoy, J.W., Giblin, A.E., 1997. Biogeochemical effects of seawater restoration to diked salt 
marshes. Ecol. Appl. 7: 1054-1063. 
Raymond, P.A., Bauer, J.E., 2001. DOC cycling in a temperate estuary: A mass balance approach 
using natural 14C and 13C isotopes. Limnol. Oceanogr. 46: 655-667. 
Roden, E.E., Wetzel, R.G., 1996. Organic carbon oxidation and suppression of methane 
production by microbial Fe(III) oxide reduction in vegetated and unvegetated freshwater 
wetland sediments. Limnol. Oceanogr. 41: 1733-1748. 
Rysgaard, S., Thastum, P., Dalsgaard, T., Christensen, P.B., Sloth, N.P., 1999. Effects of salinity 
on NH4+ adsorption capacity, nitrification, and denitrification in Danish estuarine 
sediments. Estuaries 22: 21-31. 
Shields, M.R., Bianchi, T.S., Gélinas, Y., Allison, M.A., Twilley, R.R., 2016. Enhanced terrestrial 
carbon preservation promoted by reactive iron in deltaic sediments, Geophys. Res. Lett., 
43,1149–1157, doi:10.1002/2015GL067388. 
Schoepfer, V., Bernhardt, E.S., Burgin, A.J., 2014. Iron clad wetlands: Soil iron–sulfur buffering 
determines coastal wetland response to salt water incursion. J. Geophys. Res.-Biogeo. 119: 
2209–2219. 
Schubauer, J.P. Hopkinson, C.S., 1984. Above- and belowground emergent macrophyte 
production and turnover in a coastal marsh ecosystem, Georgia. Limnol. Oceanogr. 29: 
1052-1065. 
Segarra, K., Comerford, C., Slaughter, J.B., Joye, S.B., 2013. Impact of electron acceptor 
availability on the anaerobic oxidation of methane in coastal freshwater and brackish 
wetland sediments. Geochim. Cosmochim. Ac. 115:15 - 30. (DOI: 
10.1016/j.gca.2013.03.029) 
Segarra, K.E.A. , Schubotz, F., Samarkin, V.; Yoshinaga, M.Y., Hinrichs, K.-U., Joye, S.B., 2014. 
High rates of anaerobic methane oxidation in freshwater wetlands reduce potential 
atmospheric methane emissions. Nature Comm. 6:7477, doi: 10.1038/ncomms8477 
Seitzinger, S.P., 1988. Denitrification in freshwater and coastal marine ecosystems: Ecological 
and geochemical significance. Limnol. Oceanogr. 33:702-724. 
Seldomridge, E., Prestegaard, K., 2011. Is denitrification kinetically-limited or transport-limited 
in tidal freshwater marshes? Appl. Geochem. 26: S256-S258. 
Seldomridge, E., Prestegaard, K., 2014. Geochemical, temperature, and hydrologic transport 
limitations on nitrate retention in tidal freshwater wetlands, Patuxent River, Maryland. 
Wetlands 34(4): 641-651. 
Simpson, R.L., Good, R.E., Walker, R., Frasco, B.R., 1983. The role of Delaware River freshwater 
tidal wetlands in the retention of nutrients and heavy metals. J. Environ. Qual. 12:41-48. 
Simpson, R.L., Whigham, D.F., Walker, R., 1978. Seasonal patterns of nutrient movement in a 
freshwater tidal marsh. In R.E. Good, D.F. Whigham, R.L. Simpson (Editors), Freshwater 
Wetlands: Ecological Processes and Management Potential. Academic Press, New York, NY, 
USA, pp. 243-257. 
Smith, S.V., Hollibaugh, J.T., 1993. Coastal metabolism and the oceanic organic carbon balance. 
Rev. Geophys. 31:75-89. 
Smolders, A.J., Lucassen, E.C., Bobbink, R., Roelofs, J.G., Lamers, L.P., 2010. How nitrate 
leaching from agricultural lands provokes phosphate eutrophication in groundwater fed 
wetlands: the sulphur bridge. Biogeochemistry 98(1-3): 1-7. 
Stagg, C.L., Schoolmaster, D.R., Krauss, K.W., Cormier, N., Conner, W.H., 2017. Causal 
mechanisms of soil organic matter decomposition: deconstructing salinity and flooding 
impacts in coastal wetlands. Ecology 98: 2003-2018. doi:10.1002/ecy.1890 
Stehr, G., Böttcher, B., Dittberner, P., Rath, G., Koops, H.-P., 1995. The ammonia-oxidizing, 
nitrifying population of the River Elbe estuary. FEMS Microbiol. Ecol. 17: 177-186. 
Stets, E.G., Butman ,D., McDonald, C.P., Stackpoole, S.M., DeGrandpre ,M.D., Striegl, R.G., 2017. 
Carbonate buffering and metabolic controls on carbon dioxide in rivers. Global 
Biogeochem. Cy. 31: 663–677. doi:10.1002/2016GB005578. 
Stevenson, J.C., Ward, L.G., Kearney, M.S., 1988. Sediment transport and trapping in marsh 
systems: Implications of tidal flux studies. Mar. Geol. 80: 37-59. 
Struyf, E., Dausse, A., Van Damme, S., Bal, K., Gribsholt, B., Boschker, H.T.S., Middelburg, J.J., 
Meire, P., 2006. Tidal marshes and biogenic silica recycling at the land-sea interface. 
Limnology and Oceanography 51: 838-846. 
Struyf, E., Temmerman, S., Meire, P., 2007. Dynamics of biogenic Si in freshwater tidal marshes: 
Si regeneration and retention in marsh sediments (Scheldt estuary). Biogeochemistry 82: 
41-53. 
Struyf, E., Van Damme, S., Gribsholt, B., Meire, P., 2005a. Freshwater marshes as dissolved silica 
recyclers in an estuarine environment (Schelde estuary, Belgium). Hydrobiologia 540: 69-
77. 
Struyf, E., Van Damme, S., Gribsholt, B., Middelburg, J.J., Meire, P., 2005b. Biogenic silica in tidal 
freshwater marsh sediments and vegetation (Schelde estuary, Belgium). Mar. Ecol. Progr. 
Ser. 303: 51-60. 
Sundareshwar, P.V., Morris, J.T., 1999. Phosphorus sorption characteristics of intertidal marsh 
sediments along an estuarine salinity gradient. Limnol. Oceanogr. 44: 1693-1701. 
Sutter, L.A., Perry, J.E., Chambers, R.M., 2014. Tidal freshwater marsh plant responses to low 
level salinity increases. Wetlands 34(1): 167-175. 
Sutton-Grier, A.E., Keller, J.K., Koch, R., Gilmour, C., Megonigal, J.P., 2011. Electron donors and 
acceptors influence anaerobic soil organic matter mineralization in tidal marshes. Soil Biol. 
Biochem. 43(7): 1576-1583. doi:10.1016/j.soilbio.2011.04.008 
Sutton-Grier, A.S., Megonigal, J.P., 2011. Plant species traits regulate methane production in 
freshwater wetland soils. Soil Biol. Biochem. 43(2): 413-420. Doi 
10.1016/j.soilbio.2010.11.009 
Tobias, C.R., Anderson, I.C., Canuel, E.A., Macko, S.A., 2001a. Nitrogen cycling through a fringing 
marsh-aquifer ecotone. Mar. Ecol. Prog. Ser. 210: 25-39. 
Tobias, C.R., Cieri, M., Peterson, B.J., Deegan, L.A., Vallino, J., Hughes, J., 2003. Processing 
watershed-derived nitrogen in a well-flushed New England estuary. Limnology and 
Oceanography 48: 1766-1778. 
Tobias, C.R., Macko, S.A., Anderson, I.C., Canuel, E.A., Harvey, J.W., 2001b. Tracking the fate of 
a high concentration groundwater nitrate plume through a fringing marsh: A combined 
groundwater tracer and in situ isotope enrichment study. Limnol. Oceanogr. 46: 1977-
1989. 
Tzortziou, M., Neale, P.J., Megonigal, J.P., Pow, C.L., Butterworth, M., 2011. Spatial gradients in 
dissolved carbon due to tidal marsh outwelling into a Chesapeake Bay estuary. Mar. Ecol. 
Prog. Ser. 426: 41-56. doi 10.3354/meps09017 
Tzortziou, M., Neale, P.J., Osburn, C.L., Megonigal, J.P., Maie, N., Jaffe, R., 2008. Tidal marshes 
as a source of optically and chemically distinctive colored dissolved organic matter in the 
Chesapeake Bay. Limnol. Oceanogr. 53: 148-159 
Tzortziou, M., Osburn, C.L., Neale, P.J., 2007. Photobleaching of dissolved organic material from 
a tidal marsh-estuarine system of the Chesapeake Bay. Photochem. Photobiol. 83: 782-792. 
van Damme, S., Dehairs, F., Tackx, M., Beauchard, O., Struyf, E., Gribsholt, B., Cleemput, O., 
Meire, P., 2009. Tidal exchange between a freshwater tidal marsh and an impacted 
estuary: the Scheldt estuary, Belgium. Estuar. Coastal Shelf Sci. 85(2): 197-207. 
van der Nat, F.J.W.A., Middelburg, J.J., 1998a. Effects of two common macrophytes on methane 
dynamics in freshwater sediments. Biogeochemistry  43: 79-104. 
van der Nat, F.J.W.A., Middelburg, J.J., 1998b. Seasonal variation in methane oxidation by the 
rhizosphere of Phragmites australis and Scirpus lacustris. Aquat. Bot. 61: 95-110. 
van der Nat, F.J.W.A., Middelburg, J.J., 2000. Methane emission from tidal freshwater marshes. 
Biogeochemistry 49: 103-121.Vann, C.D., Megonigal, J.P., 2003. Elevated CO2 and water 
depth regulation of methane emissions: Comparison of woody and non-woody wetland 
plant species. Biogeochemistry 63: 117-134. 
Von Korff, B.H., Piehler, M.F., Ensign, S.H., 2014. Comparison of denitrification between river 
channels and their adjoining tidal freshwater wetlands. Wetlands 34(6): 1047-1060. 
Walker, R., 1981. Nitrogen, phosphorus and production dynamics for Peltandra virginica (L.) 
Kunth in a southern New Jersey freshwater tidal marsh. Ph.D. Dissertation, Rutgers 
University, New Brunswick, NJ, USA. 180 pp. 
Wallenstein, M.D., Myrold, D.D., Firestone, M.K., Voytek, M.A., 2006. Environmental controls 
on denitrifying communities and denitrification rates: Insights from molecular methods. 
Ecol. Appl.16: 2143-2152. 
Wang, Z.A., Kroeger, K.D., Ganju, N.K., Gonneea, M.E. and Chu, S.N., 2016. Intertidal salt 
marshes as an important source of inorganic carbon to the coastal ocean. Limnol. 
Oceanogr. 61: 1916–1931. doi:10.1002/lno.10347. 
Weiss, J.V., Emerson, D., Backer, S.M., Megonigal, J.P., 2003. Enumeration of Fe(II)-oxidizing and 
Fe(III)-reducing bacteria in the root zone of wetland plants: Implications for a rhizosphere 
iron cycle. Biogeochemistry 64: 77-96. 
Weiss, J.V., Emerson, D., Megonigal, J.P., 2004. Geochemical control of microbial Fe(III) 
reduction potential in wetlands: comparison of the rhizosphere to non-rhizosphere soil. 
FEMS Microbiol. Ecol. 48:89-100. 
Weiss, J.V., Emerson, D., Megonigal, J.P., 2005. Rhizosphere iron(III) deposition and reduction in 
a Juncus effusus L.-dominated wetland. Soil Sci. Soc. Am. J. 69: 1861-1870. 
Weston, N.B., Dixon, R.E., Joye, S.B., 2006. Ramifications of increased salinity in tidal freshwater 
sediments: Geochemistry and microbial pathways of organic mineralization. J. Geophys. 
Res. 111: G01009. 
Weston, N.B., Vile, M.A., Neubauer, S.C., Velinsky, D.J., 2011. Accelerated microbial organic 
matter mineralization following salt-water intrusion into tidal freshwater marsh soils. 
Biogeochemistry. 102:135-151. 
Weston, N.B., Neubauer, S.C., Velinsky, D.J., Vile, M.A., 2014. Net ecosystem carbon exchange 
and the greenhouse gas balance of tidal marshes along an estuarine salinity gradient. 
Biogeochemistry. 120:163-189. doi: 10.1007/s10533-014-9989-7. 
Whigham D.F., Simpson, R.L., 1978. Nitrogen and phosphorus movement in a freshwater tidal 
wetland receiving sewage effluent. Proceedings of Symposium on Technological, 
Environmental, Socioeconomic, and Regulatory Aspects of Coastal Zone Management. 
ASCE, San Fransisco, CA, USA, pp. 2189-2203. 
Whigham, D.F., 2009. Primary production in tidal freshwater wetlands. In A. Barendregt, D.F. 
Whigham, A.H. Baldwin (Editors). Tidal Freshwater Wetlands. Backhuys Publishers B.V., 
Leiden, The Netherlands. 
White, D.S., Howes, B.L., 1994. Long-term 15N-nitrogen retention in the vegetated sediments of 
a New England salt marsh. Limnol. Oceanogr. 39: 1878-1892. 
Williams, E.K., Rosenheim, B.E., 2015. What happens to soil organic carbon as coastal marsh 
ecosystems change in response to increasing salinity? An exploration using ramped 
pyrolysis. Geochem. Geophys. Geosyst. 16: 2322–2335, doi:10.1002/2015GC005839. 
Wilson, B.J., Mortazavi, B., Kiene, R.P., 2015. Spatial and temporal variability in carbon dioxide 
and methane exchange at three coastal marshes along a salinity gradient in a northern Gulf 
of Mexico estuary. Biogeochemistry. 123: 329-347. Doi: 10.1007/s10533-015-0085-4. 
Ziegler, S., Velinsky, D.J., Swarth, C.W., Fogel, M.L., 1999. Sediment-water exchange of dissolved 
inorganic nitrogen in a freshwater tidal wetland. Jug Bay Wetlands Sanctuary, Lothian, MD, 
USA. 25 pp.