Abstract
Porewater equilibration samplers were used to obtain porewater inventories of inorganic nutrients (NH +4 , NO x , PO 3−4 ), dissolved organic carbon (DOC) and nitrogen (DON), sulfate (SO 2−4 ), dissolved inorganic carbon (DIC), hydrogen sulfide (H2S), chloride (Cl−), methane (CH4) and reduced iron (Fe2+) in intertidal creek-bank sediments at eight sites in three estuarine systems over a range of salinities and seasons. Sulfate reduction (SR) rates and sediment particulate organic carbon (POC) and nitrogen (PON) were also determined at several of the sites. Four sites in the Okatee River estuary in South Carolina, two sites on Sapelo Island, Georgia and one site in White Oak Creek, Georgia appeared to be relatively pristine. The eighth site in Umbrella Creek, Georgia was directly adjacent to a small residential development employing septic systems to handle household waste. The large data set (>700 porewater profiles) offers an opportunity to assess system-scale patterns of porewater biogeochemical dynamics with an emphasis on DOC and DON distributions. SO 2−4 depletion (SO 2−4 )Dep was used as a proxy for SR, and (SO 2−4 )Dep patterns agreed with measured (35S) patterns of SR. There were significant system-scale correlations between the inorganic products of terminal metabolism (DIC, NH +4 and PO 3−4 ) and (SO 2−4 )Dep, and SR appeared to be the dominant terminal carbon oxidation pathway in these sediments. Porewater inventories of DIC and (SO 2−4 )Dep indicate a 2:1 stoichiometry across sites, and the C:N ratio of the organic matter undergoing mineralization was between 7.5 and 10. The data suggest that septic-derived dissolved organic matter with a C:N ratio below 6 fueled microbial metabolism and SR at a site with development in the upland. Seasonality was observed in the porewater inventories, but temperature alone did not adequately describe the patterns of (SO 2−4 )Dep, terminal metabolic products (DIC, NH +4 , PO 3−4 ), DOC and DON, and SR observed in this study. It appears that production and consumption of labile DOC are tightly coupled in these sediments, and that bulk DOC is likely a recalcitrant pool. Preferential hydrolysis of PON relative to POC when overall organic matter mineralization rates were high appears to drive the observed patterns in POC:PON, DOC:DON and DIC:DIN ratios. These data, along with the weak seasonal patterns of SR and organic and inorganic porewater inventories, suggest that the rate of hydrolysis limits organic matter mineralization in these intertidal creek-bank sediments.
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References
R.C. Aller J.Y. Aller (1998) ArticleTitleThe effect of biogenic irrigation intensity and solute exchange on diagenetic reaction rates in marine sediments J. Mar. Res. 56 905–936 Occurrence Handle10.1357/002224098321667413
M.J. Alperin S.T.L2 Albert C.S. Martens (1994) ArticleTitleSeasonal variations in production and consumption rates of dissolved organic carbon in an organic-rich coastal sediment Geochim. Cosmochim. Acta 58 4909–4930 Occurrence Handle10.1016/0016-7037(94)90221-6
M.J. Alperin C.S. Martens S.T.L2 Albert I.B. Suayah L.K. Benninger N.E. Blair R.A. Jahnke (1999) ArticleTitleBenthic fluxes and porewater concentration profiles of dissolved organic carbon in sediments from the North Carolina continental slope Geochim. Cosmochim. Acta 63 427–448 Occurrence Handle10.1016/S0016-7037(99)00032-0
X.A. Álvarez-Salgado A.E.J Miller (1998) ArticleTitleSimultaneous determination of dissolved organic carbon and total dissolved nitrogen in seawater by high temperature catalytic oxidation: conditions for precise shipboard measurements Mar. Chem. 62 325–333 Occurrence Handle10.1016/S0304-4203(98)00037-1
R.M.W. Amon R. Benner (1996) ArticleTitleBacterial utilization of different size classes of dissolved organic matter Limnol. Oceanogr. 41 41–51
C. Arnosti D.J. Repeta (1994) ArticleTitleOligosaccharide degradation by anaerobic marine bacteria: characterization of an experimental system to polymer degradation in sediments Limnol. Oceanogr. 39 1865–1877
B.P. Boudreau (1997) Diagenetic Models and their Implications Springer Berlin
W.R. Boynton W.M. Kemp (1985) ArticleTitleNutrient regeneration and oxygen consumption by sediments along an estuarine salinity gradient Mar. Ecol. Prog. Ser. 23 45–55
V. Brüchert C. Arnosti (2003) ArticleTitleAnaerobic carbon transformation: experimental studies with flow-through cells Mar. Chem. 80 171–183 Occurrence Handle10.1016/S0304-4203(02)00119-6
D.J. Burdige C.S. Martens (1988) ArticleTitleBiogeochemical cycling in an organic-rich coastal marine basin: 10. The role of amino acids in sedimentary carbon and nitrogen cycling Geochim. Cosmochim. Acta 52 1571–1584 Occurrence Handle10.1016/0016-7037(88)90226-8
D.J. Burdige K.G. Gardner (1998) ArticleTitleMolecular weight distribution of dissolved organic carbon in marine sediment pore waters Mar. Chem. 62 45–64 Occurrence Handle10.1016/S0304-4203(98)00035-8
D.J. Burdige S. Zheng (1998) ArticleTitleThe biogeochemical cycling of dissolved organic nitrogen in estuarine sediments Limnol. Oceanogr. 43 1796–1813
D.J. Burdige W.M. Berleson K.H. Coale J. McManus K.S. Johnson (1999) ArticleTitleFluxes of dissolved organic carbon from California continental margin sediments Geochim. Cosmochim. Acta 63 1507–1515 Occurrence Handle10.1016/S0016-7037(99)00066-6
D.J. Burdige (2001) ArticleTitleDissolved organic matter in Chesapeake Bay sediment pore waters Org. Geochem. 32 487–505 Occurrence Handle10.1016/S0146-6380(00)00191-1
D.E. Canfield R. Raiswell J.T. Westrich C.M. Reaves R.A. Berner (1986) ArticleTitleThe use of chromium reduction in the analysis of reduced inorganic sulfur in sediments and shales Chem. Geol. 54 149–155 Occurrence Handle10.1016/0009-2541(86)90078-1
D. Canfield B. Thamdrup J. Hansen (1993) ArticleTitleThe anaerobic degradation of organic matter in Danish coastal sediments: Iron reduction, manganese reduction, and sulfate reduction Geochim. Cosmochim. Acta 57 3867–3883
D.G. Capone R.P. Kiene (1988) ArticleTitleComparison of microbial dynamics in marine and fresh-water sediments - contrasts in anaerobic carbon catabolism Limnol. Oceanogr. 33 725–749
B. Cermelj A. Bertuzzi J. Faganeli (1997) ArticleTitleModeling of pore water nutrient distribution and benthic fluxes in shallow coastal waters (Gulf of Trieste, Northern Adriatic) Water Air Soil Pollut. 99 435–444 Occurrence Handle10.1023/A:1018391423286
V. Enoksson (1993) ArticleTitleNutrient recycling by coastal sediments: effects of added algal material Mar. Ecol. Prog. Ser. 92 245–254
T.M. Fenchel B.J. Findlay (1995) Ecology and evolution of anoxic worlds Oxford University Press Oxford
P.N. Froelich G.P. Klinkhammer M.L. Bender N.A. Luedtke G.R. Heath D. Cullen P. Dauphin D. Hammond B. Hartman V. Maynard (1979) ArticleTitleEarly oxidation of organic-matter in pelagic sediments of the eastern equatorial Atlantic – suboxic diagenesis Geochim. Cosmochim. Acta 43 1075–1090 Occurrence Handle10.1016/0016-7037(79)90095-4
R.H. Hesslein (1976) ArticleTitleAn in situ sampler for close interval pore water studies Limnol. Oceanogr. 21 912–914
M.E. Hines R.S. Evans B.R.S Genthner S.G. Willis S. Friedman J.N. Rooney-Varga R. Devereux (1999) ArticleTitleMolecular phylogenetic and biogeochemical studies of sulfate-reducing bacteria in the rhizosphere of Spartina alterniflora Appl. Environ. Microbiol. 65 2209–2216
C.S. Hopkinson (1987) ArticleTitleNutrient regeneration in shallow-water sediments of the estuarine plume region of the nearshore Georgia Bight USA Mar. Biol. 94 127–142 Occurrence Handle10.1007/BF00392905
C.S. Hopkinson A.E. Giblin J. Tucker R.H. Garritt (1999) ArticleTitleBenthic metabolism and nutrient cycling along an estuarine salinity gradient Estuaries 22 825–843
R.W. Howarth (1988) ArticleTitleNutrient limitation of net primary production in marine ecosystems Ann. Rev. Ecol. 19 89–110
R.W. Howarth (1993) Microbial processes in salt-marsh sediments T.E. Ford (Eds) Aquatic microbiology: an ecological approach Blackwell Cambridge 239–259
N. Iversen B.B. Jørgensen (1985) ArticleTitleAnaerobic methane oxidation rates at the sulfate-methane transition in marine sediments from Kattegat and Skagerrak (Denmark) Limnol. Oceanogr. 30 944–955
B.B. Jørgensen (1977) ArticleTitleSulfur cycle of a coastal marine sediment (Limfjorden, Denmark) Limnol. Oceanogr. 22 814–832
B.B. Jørgensen (1978) ArticleTitleA comparison of methods for the quantification of bacterial sulfate reduction in coastal marine sediments. 1. Measurements with radiotracer techniques Geomicrobiol. J. 1 11–27
B.B. Jørgensen (1982) ArticleTitleMineralization of organic-matter in the sea bed – the role of sulfate reduction Nature 296 643–645 Occurrence Handle10.1038/296643a0
B.B. Jørgensen J. Sørensen (1985) ArticleTitleSeasonal cycles of O2NO −3 and SO 2−4 reduction in estuarine sediments: the significance of an NO −3 reduction maximum in spring Mar. Ecol. Prog. Ser. 24 65–74
B.B. Jørgensen (2000) Bacteria and marine biogeochemistry H.D. Schulz M. Zabel (Eds) Marine geochemistry Springer New York 173–207
S.B. Joye J.T. Hollibaugh (1995) ArticleTitleInfluence of sulfide inhibition of nitrification on nitrogen regeneration in sediments Science 270 623–624
G.M. King (1988) ArticleTitlePatterns of sulfate reduction and the sulfur cycle in a South Carolina salt marsh Limnol. Oceanogr. 33 376–390
J.E. Kostka B. Gribsholt E. Petrie D. Dalton H. Skelton E. Kristensen (2002a) ArticleTitleThe rates and pathways of carbon oxidation in bioturbated saltmarsh sediments Limnol. Oceanogr. 47 230–240
J.E. Kostka A. Roychoudhury P. Van Cappellen (2002b) ArticleTitleRates and controls of anaerobic microbial respiration across spatial and temporal gradients in saltmarsh sediments Biogeochemistry 60 49–76 Occurrence Handle10.1023/A:1016525216426
B.A. Lomstein T.H. Blackburn K. Henriksen (1989) ArticleTitleAspects of nitrogen and carbon cycling in the northern Bering Shelf sediment I. The significance of urea turnover in the mineralization of NH +4 Mar. Ecol. Prog. Ser. 57 237–247
K.L. Lowe T.J. DiChristina A.N. Roychoudhury P. Van Cappellen (2000) ArticleTitleMicrobiological and geochemical characterization of microbial Fe(III) reduction in salt marsh sediments J. Geomicrobiol. 17 163–178
M.C. Marvin-DiPasquale W.R. Boynton D.G. Capone (2003) ArticleTitleBenthic sulfate reduction along the Chesapeake Bay central channel. II. Temporal controls Mar. Ecol. Prog. Ser. 260 55–70
C. Meile C.M. Koretsky P. Cappellen ParticleVan (2001) ArticleTitleQuantifying bioirrigation in aquatic sediments: an inverse modeling approach Limnol. Oceanogr. 46 164–177
J.J. Middelburg K. Soetart P.M.J Herman (1997) ArticleTitleEmpirical relationships for use in global diagenetic models Deep-Sea Res. 44 327–344
J.W. Moore D.E. Schindler M.D. Scheuerell D. Smith J. Frodge (2003) ArticleTitleLake eutrophication at the urban fringeSeattle region, USA Ambio 32 13–18
J. Murphy J.P. Riley (1962) ArticleTitleA modified single solution method for the determination of phosphate in natural systems Anal. Chim. Acta 27 31–36 Occurrence Handle10.1016/S0003-2670(00)88444-5
O.I. Nielsen E. Kristensen D.J. Macintosh (2003) ArticleTitleImpact of fiddler crabs (Uca spp) on rates and pathways of benthic mineralization in deposited mangrove shrimp pond waste J. Exp. Mar. Biol. Ecol. 289 59–81 Occurrence Handle10.1016/S0022-0981(03)00041-8
M.E.Q. Pilson (1998) An introduction to the chemistry of the sea Prentice Hall New Jersey
C.J. Ptacek (1998) ArticleTitleGeochemistry of a septic-system plum in a coastal barrier barPoint PeleeOntarioCanada J. Cont. Hydrol. 33 293–312 Occurrence Handle10.1016/S0169-7722(98)00076-X
A.C. Redfield (1958) ArticleTitleThe biological control of chemical factors in the environment Am. Sci. 46 205–222
E.E. Roden R.G. Wetzel (1996) ArticleTitleOrganic 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
J.K. Rosenfeld (1979) ArticleTitleAmmonium adsorption in anoxic nearshore sediments Limnol. Oceanogr. 24 356–364
G.T. Rowe C.H. Clifford K.L. Smith (1976) ArticleTitleBenthic nutrient regeneration and its coupling to primary productivity in coastal waters Nature 255 215–217
A.N. Roychoudhury E. Viollier P. Cappellen ParticleVan (1998) ArticleTitleA plug flow-through reactor for studying biogeochemical reactions in undisturbed aquatic sediments Appl. Geochem. 13 269–280 Occurrence Handle10.1016/S0883-2927(97)00064-4
S. Rysgaard P. Thastum T. Dalsgaard O.K.T2 Christensen N.P. Sloth (1999) ArticleTitleEffects of salinity on NH +4 adsorption capacity, nitrification, and denitrification in Danish estuarine sediments Estuaries 22 21–30
F.J. Sansone C.S. Martens (1978) ArticleTitleMethane oxidation in Cape Lookout Bight, North Carolina Limnol. Oceanogr. 23 349–355
G. Sarazin G. Michard F. Prevot (1999) ArticleTitleA rapid and accurate spectroscopic method for alkalinity measurements in sea water samples Water Res. 33 290–294 Occurrence Handle10.1016/S0043-1354(98)00168-7
S.P. Seitzinger (1988) ArticleTitleDenitrification in freshwater and coastal marine ecosystems: ecological and geochemical significance Limnol. Oceanogr. 33 702–724
L. Solorzano (1969) ArticleTitleDetermination of ammonia in natural waters by the phenolhypochlorite method Limnol. Oceanogr. 14 799–801
L.L. Stookey (1970) ArticleTitleFerrozine – a new spectrophotometric reagent for iron Anal. Chem. 42 779–781 Occurrence Handle10.1021/ac60289a016
W. Stumm J.J. Morgan (1996) Aquatic Chemistry EditionNumber3 Wiley New York
P.V. Sundareshwar J.T. Morris (1999) ArticleTitlePhosphorus sorption characteristics of intertidal marsh sediments along an estuarine salinity gradient Limnol. Oceanogr. 44 1693–1701
J.M. Teal (1958) ArticleTitleDistribution of fiddler crabs in Georgia salt marshes Ecology 39 185–193
J.T. Westrich R.A. Berner (1988) ArticleTitleThe effect of temperature on rates of sulfate reduction in marine sediments Geomicrobiol. J. 6 99–117
M. Yamamuro I. Koike (1998) ArticleTitleConcentrations of nitrogen in sandy sediments of a eutrophic estuarine lagoon Hydrobiologia 386 37–44 Occurrence Handle10.1023/A:1003414028040
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Weston, N.B., Porubsky, W.P., Samarkin, V.A. et al. Porewater Stoichiometry of Terminal Metabolic Products, Sulfate, and Dissolved Organic Carbon and Nitrogen in Estuarine Intertidal Creek-bank Sediments. Biogeochemistry 77, 375–408 (2006). https://doi.org/10.1007/s10533-005-1640-1
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DOI: https://doi.org/10.1007/s10533-005-1640-1