Advertisement

Oecologia

, Volume 60, Issue 3, pp 306–312 | Cite as

Benthic nutrient flux in a shallow coastal environment

  • A. J. Pomroy
  • I. R. Joint
  • K. R. Clarke
Original Papers

Summary

Ammonia and nitrate efflux from a fine sand in Carmarthen Bay was studied by incubating undisturbed cores of sediment on board ship. At the end of each incubation, the macrofaunal and bacterial biomass in each core and the organic content of the sediment were determined. Oxygen consumption was measured in another series of cores. The relationship between ammonia flux and biomass was investigated using a lattice of hypotheses approach to multiple linear regression, where all possible submodels of a general model are fitted. Ammonia flux was significantly related to the biomass of polychaetes and molluscs and “other macrofauna” but the inclusion of bacterial biomass did not improve the regressions. The estimated annual efflux of ammonia was 778 mmol N m-2 which is 44% of the estimated annual nitrogen demand of the phytoplankton. However, at the time of maximum primary production in June, only 16% of the phytoplankton requirement for nitrogen was met by benthic ammonia flux. Nitrate efflux was an order of magnitude less than that of ammonia and reached a maximum in the autumn. No significant relationship was found between oxygen consumption and macrofaunal or bacterial biomass at any time of the year.

Keywords

Biomass Phytoplankton Oxygen Consumption Multiple Linear Regression Polychaete 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Banse K, Nichols FH, May DR (1971) Oxygen consumption by the seabed. III. On the role of macrofauna at three stations. Vie Milieu Suppl 22:31–52Google Scholar
  2. Bowman GT, Delfino JJ (1980) Sediment oxygen demand techniques: a review and comparsion of laboratory and in situ systems. Water Res 14:491–499Google Scholar
  3. Brewer PG, Riley JP (1965) The automatic determination of nitrate in seawater. Deep-sea Res 12:765–772Google Scholar
  4. Callender E, Hammond DE (1982) Nutrient exchange across the sediment water interface in the Potomac River estuary. Est coastl shelf Sci 15:395–413Google Scholar
  5. Conway HL, Whitledge TE (1979) Distribution fluxes and biological utilization of inorganic nitrogen during a spring bloom in the New York Bight. J mar Res 37:657–668Google Scholar
  6. Craib JS (1965) A sampler for taking short undisturbed marine cores. J Cons perm int Explor Mer 30:34–39Google Scholar
  7. Davies JM (1975) Energy flow through benthos in a Scottish sea loch. Mar biol 31:353–362Google Scholar
  8. Hobbie JE, Daley RJ, Jasper S (1977) Use of Nucleopore filters for counting bacteria by fluorescence microscopy. Appl environ Microbiol 33:1225–1228Google Scholar
  9. Joint IR, Pomroy AJ (1981) Primary production in a turbid estuary. Est coastl shelf Sci 13:303–316Google Scholar
  10. Kemp, WM, Boynton WR (1980) Influence of biological and physical processes on dissolved oxygen dynamics in an estuarine system: implications for measurement of community metabolism. Est coastl mar Sci 11:407–431Google Scholar
  11. Kemp WM, Boynton WR (1981) External and internal factors regulating metabolic rates of an estuarine benthic community. Oecologia (Berlin) 51:19–27Google Scholar
  12. Le Corre P, Tréguer P (1978) Dosage de l'ammonium dans l'eau de mer: comparaison entre deux methodes d'analyse automatique. J cons int Explor Mer 38:147–153Google Scholar
  13. McCaffrey RJ, Myers AC, Davey E, Morrison G, Bender M, Luedtke N, Cullen D, Froelich P, Klinkhammer G (1980) The relationship between pore water chemistry and benthic fluxes of nutrients and manganese in Narragansett Bay, Rhode Island. Limnol Oceanogr 25:31–44Google Scholar
  14. McCarthy JJ, Goldman JC (1979) Nitrogenous nutrition of marine phytoplankton in nutrient depleted waters. Science 203:670–672Google Scholar
  15. Raine RCJ, Patching JW (1980) Aspects of carbon and nitrogen cycling in a shallow marine environment. J exp mar biol Ecol 47:127–139Google Scholar
  16. Redfield AC (1958) The biological control of chemical factors in the environment. Amer Scientist 46:205–221Google Scholar
  17. Rowe GT, Clifford CH, Smith KL, Hamilton PL (1975) Benthic nutrient regeneration and its coupling to primary productivity in coastal waters. Nature, London 255:215–217Google Scholar
  18. Rowe GT, Clifford CH, Smith KL (1977) Nutrient regeneration in sediments off Cap Blanc, Spanish Sahara. Deep-sea Res 24:57–63Google Scholar
  19. Rutgers van der Loeff MM (1980) Nutrients in the interstitial water of the Southern Bight of the North Sea. Neth J sea Res 14:144–171Google Scholar
  20. Sokal RR, Rohlf FJ (1969) Biometry: the principles and practice of statistics in biological research. WH Freeman, San Francisco, p 776Google Scholar
  21. Val Klump J, Martens CS (1981) Biogeochemical cycling in an organic rich coastal marine basin. II. Nutrient sediment-water exchange processes. Geochim cosmochim, Acta 45:101–121Google Scholar
  22. Vanderborght JP, Billen G (1975) Vertical distribution of nitrate concentration in interstitial water of marine sediments with nitrification and denitrification. Limnol Oceanogr 20:953–961Google Scholar
  23. Vanderborght JP, Wollast R, Billen G (1977) Kinetic models of diagenesis in disturbed sediments II Nitrogen diagenesis. Limnol Oceanogr 22:794–803Google Scholar
  24. Warwick RM, Uncles RJ (1980) Distribution of benthic macrofauna associations in the Bristol Channel in relation to tidal stress. Mar Ecol Prog Ser 3:97–103Google Scholar
  25. Warwick RM, George CL, Davies JR (1978) Annual macrofauna production in a Venus community. Est coastl mar Sci 7:215–241Google Scholar

Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • A. J. Pomroy
    • 1
  • I. R. Joint
    • 1
  • K. R. Clarke
    • 1
  1. 1.Natural Environment Research CouncilInstitute for Marine Environmental ResearchPlymouthUK

Personalised recommendations