Coastal metabolism and the oceanic organic carbon balance

Net organic metabolism (that is, the difference between primary production and respiration of organic matter) in the coastal ocean may be a significant term in the oceanic carbon budget. Historical change in the rate of this net metabolism determines the importance of the coastal ocean relative to anthropogenic perturbations of the global carbon cycle. Consideration of long-term rates of river loading of organic carbon, organic burial, chemical reactivity of land-derived organic matter, and rates of community metabolism in the coastal zone leads us to estimate that the coastal zone oxidizes about 7 × 1012 moles C/yr. The open ocean is apparently also a site of net organic oxidation (∼16 × 1012 moles C/yr). Thus organic metabolism in the ocean appears to be a source of CO2 release to the atmosphere rather than being a sink for atmospheric carbon dioxide. The small area of the coastal ocean accounts for about 30% of the net oceanic oxidation. Oxidation in the coastal zone (especially in bays and estuaries) takes on particular importance, because the input rate is likely to have been altered substantially by human activities on land.

[1]  G. Billen,et al.  The Fate of Terrestrial Organic Carbon in the Coastal Area , 1980 .

[2]  B. Peterson,et al.  Particulate organic matter flux and planktonic new production in the deep ocean , 1979, Nature.

[3]  F. Mackenzie,et al.  Comments on the role of oceanic biota as a sink for anthropogenic CO2 emissions , 1991 .

[4]  K. Mopper,et al.  Chapter 31 – Factors Controlling the Distribution and Early Diagenesis of Organic Material in Marine Sediments* , 1976 .

[5]  E. Woodward,et al.  Conservative behaviour of riverine dissolved organic carbon in the Severn Estuary: chemical and geochemical implications , 1983 .

[6]  P. Liss.  Gas Transfer: Experiments and Geochemical Implications , 1983 .

[7]  J. Pinto,et al.  The Natural and Perturbed Troposphere , 1978, IEEE Transactions on Geoscience Electronics.

[8]  R. Stallard,et al.  Organic Carbon: Oxidation and Transport in the Amazon River , 1980, Science.

[9]  L. Tranvik,et al.  Bacterial Growth in Mixed Cultures on Dissolved Organic Carbon from Humic and Clear Waters , 1987, Applied and environmental microbiology.

[10]  A. Knap,et al.  Contribution of volatile petroleum hydrocarbons to the organic carbon budget of an estuary , 1979, Nature.

[11]  J. Hedges,et al.  Sources of sedimentary humic substances: vascular plant debris , 1985 .

[12]  D. F. Ritter,et al.  Rates of regional denudation in the United States , 1964 .

[13]  Mary Ann Moran,et al.  Distribution of terrestrially derived dissolved organic matter on the southeastern U.S. continental shelf , 1991 .

[14]  C. Hopkinson,et al.  Shallow-water benthic and pelagic metabolism: , 1985 .

[15]  Lars Andersson,et al.  Trends in Nutrient and Oxygen Conditions Within the Kattegat: Effects of Local Nutrient Supply , 1988 .

[16]  J. Day,et al.  Effects of river discharge and vertical circulation on aquatic primary production in a turbid Louisiana (USA) estuary , 1987 .

[17]  Stephen V. Smith.  Stoichiometry of C:N:P Fluxes in Shallow-Water Marine Ecosystems , 1991 .

[18]  V. Ittekkot,et al.  Global trends in the nature of organic matter in river suspensions , 1988, Nature.

[19]  S. Nixon,et al.  ESTUARINE TOTAL SYSTEM METABOLISM AND ORGANIC EXCHANGE CALCULATED FROM NUTRIENT RATIOS: AN EXAMPLE FROM NARRAGANSETT BAY , 1984 .

[20]  S. Trimble.  Denudation Studies: Can We Assume Stream Steady State? , 1975, Science.

[21]  D. Kinsey.  Carbon turnover and accumulation by coral reefs , 1979 .

[22]  D. Hammond,et al.  Gas exchange in San Francisco Bay , 1985 .

[23]  R. Garrels,et al.  A quantitative model for the sedimentary rock cycle , 1972 .

[24]  R. H. Meade,et al.  World-Wide Delivery of River Sediment to the Oceans , 1983, The Journal of Geology.

[25]  W. Boynton,et al.  A COMPARATIVE ANALYSIS OF NUTRIENTS AND OTHER FACTORS INFLUENCING ESTUARINE PHYTOPLANKTON PRODUCTION , 1982 .

[26]  David M. Karl,et al.  VERTEX: carbon cycling in the northeast Pacific , 1987 .

[27]  An estimate of oxygen consumption and denitrification in coastal waters of the Swedish west coast, using indirect methods , 1988 .

[28]  W. Boynton,et al.  NITROGEN CYCLING AND ESTUARINE INTERFACES: SOME CURRENT CONCEPTS AND RESEARCH DIRECTIONS , 1982 .

[29]  R. Berner.  Biogeochemical cycles of carbon and sulfur and their effect on atmospheric oxygen over phanerozoic time , 1989 .

[30]  John H. Martin,et al.  Primary production and carbon-nitrogen fluxes in the upper 1,500 m of the northeast Pacific1 , 1981 .

[31]  William J. Kimmerer,et al.  Kaneohe Bay Sewage Diversion Experiment: Perspectives on Ecosystem Responses to Nutritional Perturbation , 1981 .

[32]  F. Muller‐Karger,et al.  Meridional fluxes of dissolved organic matter in the north Atlantic Ocean , 1992 .

[33]  C. Hall,et al.  Carbon in estuaries. , 1973, Brookhaven symposia in biology.

[34]  J. Walsh.  On the Nature of Continental Shelves , 1988 .

[35]  D. Menzel.  Primary productivity, dissolved and particulate organic matter, and the sites of oxidation of organic matter , 1974 .

[36]  Giacomo R. DiTullio,et al.  Primary productivity and particle fluxes on a transect of the equator at 153°W in the Pacific Ocean , 1984 .

[37]  R. Grieken,et al.  Loss of particulate organic matter in estuaries as exemplified by the Ems and Gironde estuaries , 1985 .

[38]  S. V. Smith.  Physical, chemical and biological characteristics* of CO2 gas flux across the air‐water interface , 1985 .

[39]  R. Duce,et al.  Inputs of organic matter to the ocean , 1977 .

[40]  F. Mackenzie,et al.  The ocean as a net heterotrophic system: Implications From the carbon biogeochemical cycle , 1987 .

[41]  D. Capone.  Chapter 4 – BENTHIC NITROGEN FIXATION , 1983 .

[42]  Candace A. Oviatt,et al.  Ecology of a New England salt marsh , 1973 .

[43]  T. Malone,et al.  Monthly oxygen and carbon budgets of the New York Bight Apex , 1978 .

[44]  P. Nienhuis.  Chapter 3 Distribution of Organic Matter in Living Marine Organisms , 1981 .

[45]  S. Kempe.  Sinks of the anthropogenically enhanced carbon cycle in surface fresh waters , 1984 .

[46]  G. Likens,et al.  The biota and the world carbon budget. , 1978, Science.

[47]  R. Howarth.  The ecological significance of sulfur in the energy dynamics of salt marsh and coastal marine sediments , 1984 .

[48]  R. H. Meade,et al.  Storage and Remobilization of Suspended Sediment in the Lower Amazon River of Brazil , 1985, Science.

[49]  K. Whittle.  Marine organisms and their contribution to organic matter in the ocean , 1977 .

[50]  J. Syvitski,et al.  Geomorphic/Tectonic Control of Sediment Discharge to the Ocean: The Importance of Small Mountainous Rivers , 1992, The Journal of Geology.

[51]  R. Hodson,et al.  Contributions of degrading Spartina alterniflora lignocellulose to the dissolved organic carbon pool of a salt marsh , 1990 .

[52]  P. Williams.  Measurement of Dissolved Organic Carbon and Nitrogen in Natural Waters , 1992 .

[53]  J. Ryther.  Photosynthesis and fish production in the sea. , 1969, Science.

[54]  G. A. Phillips,et al.  Annual in situ carbon dioxide and oxygen flux across a subtidal marine sediment , 1981 .

[55]  Jeffrey E. Richey,et al.  Compositions and fluxes of particulate organic material in the Amazon River1 , 1986 .

[56]  M. Meybeck.  Carbon, nitrogen, and phosphorus transport by world rivers , 1982 .

[57]  P. Froelich,et al.  Modeling estuarine nutrient geochemistry in a simple system , 1984 .

[58]  D. Kinsey.  Metabolism, calcification and carbon production. I. System level studies , 1985 .

[59]  E. Perdue,et al.  Lignin Signature of Aquatic Humic Substances , 1984, Science.

[60]  D. O. Hessen,et al.  The relation between bacterial carbon and dissolved humic compounds in oligotrophic lakes , 1985 .

[61]  J. Sarmiento,et al.  Revised budget for the oceanic uptake of anthropogenic carbon dioxide , 1992, Nature.

[62]  J.M.J. Hoppema.  The seasonal behaviour of carbon dioxide and oxygen in the coastal North Sea along The Netherlands , 1991 .

[63]  M. Atkinson.  Low phosphorus sediments in a hypersaline marine bay , 1987 .

[64]  Yoshimi Suzuki,et al.  A high-temperature catalytic oxidation method for the determination of non-volatile dissolved organic carbon in seawater by direct injection of a liquid sample , 1988 .

[65]  C. Duke,et al.  Community oxygen metabolism in a shallow tidal estuary , 1988 .

[66]  S. Vink,et al.  Tomales bay metabolism: CNP stoichiometry and ecosystem heterotrophy at the land-sea interface , 1991 .

[67]  John M. Melack,et al.  Transport of organic carbon in the world’s rivers , 1981 .

[68]  S. Seitzinger.  Denitrification in freshwater and coastal marine ecosystems: Ecological and geochemical significance , 1988 .

[69]  S. Tsunogai,et al.  Adsorption—desorption control of phosphate in anoxic sediment of a coastal sea, Funka Bay, Japan , 1984 .

[70]  E. Druffel,et al.  Dissolved Organic Matter in the Ocean: Comments on a Controversy , 1988 .

[71]  J. Sharp.  Review of Carbon, Nitrogen, and Phosphorus Biogeochemistry , 1991 .

[72]  Sue Vink,et al.  Annual cycle of benthic nutrient fluxes in Tomales Bay, California, and contribution of the benthos to total ecosystem metabolism* , 1991 .

[73]  Erwin Suess,et al.  Particulate organic carbon flux in the oceans—surface productivity and oxygen utilization , 1980, Nature.

[74]  H. D. Holland.  The chemistry of the atmosphere and oceans , 1978 .

[75]  M. Meybeck.  How to Establish and Use World Budgets of Riverine Materials , 1988 .

[76]  P. Holligan,et al.  Predicting The Responses Of The Coastal Zone To Global Change , 1992 .

[77]  J. Lay,et al.  Carbon conversion efficiency for bacterial growth on lignocellulose: Implications for detritus‐based food webs , 1988 .

[78]  P. Davies,et al.  Chapter 2.5 Carbon Turnover, Calcification and Growth in Coral Reefs , 1979 .

[79]  M. Krom,et al.  The diagenesis of phosphorus in a nearshore marine sediment , 1981 .

[80]  J. Day,et al.  Sediment-water oxygen and nutrient fluxes in a river-dominated estuary , 1988 .

[81]  J. Hedges,et al.  The lignin component of humic substances: Distribution among soil and sedimentary humic, fulvic, and base-insoluble fractions , 1984 .

[82]  M. Meybeck.  C, N, P and S in Rivers: From Sources to Global Inputs , 1993 .

[83]  S. Kempe,et al.  Sinks and sources of CO2 in coastal seas - The North Sea , 1991 .

[84]  M. Moran,et al.  Formation and bacterial utilization of dissolved organic carbon derived from detrital lignocellulose , 1989 .

[85]  C. Hopkinson.  Patterns of Organic Carbon Exchange between Coastal Ecosystems , 1988 .

[86]  S. Kempe.  Carbon in the freshwater Cycle , 1979 .

[87]  P. Falkowski,et al.  Do continental shelves export organic matter? , 1986, Nature.

[88]  F. Flores-Verdugo,et al.  Phytoplankton production and seasonal biomass variation of seagrass,Ruppia maritima L., in a tropical Mexican lagoon with an ephemeral inlet , 1988 .

[89]  H. Postma.  Hydrography of the Dutch Wadden Sea , 1954 .

[90]  The oxygen budget of the western Wadden Sea, The Netherlands , 1991 .

[91]  Wolfgang H Berger,et al.  Ocean productivity and paleoproductivity - an overview , 1989 .

[92]  J. Hedges,et al.  Dissolved humic substances of the Amazon River system1 , 1986 .

[93]  Stephen V. Smith,et al.  Mass balance of biogeochemically active materials (C, N, P) in a hypersaline gulf , 1989 .

[94]  J. Milliman,et al.  Flux and fate of fluvial sediment and water in coastal seas , 1991 .

[95]  R. Barbour,et al.  Degradation of carbohydrates and lignins in buried woods , 1985 .

[96]  R. Berner.  Burial of organic carbon and pyrite sulfur in the modern ocean : its geochemical and environmental significance , 1982 .