Abstract
The annual variations of chloropigments (‘Chl. a’ and phaeopigments) concentrations at two reference stations — a subtidal sand in the Morlaix Bay and a subtidal sandy mud in the ‘Rade de Brest’ (France) — are discussed. Analysis of correspondance elucidates the relations between the evolution of the microphytobenthic communities and the nitrogen nutrients in the interstitial water in the top layer of the sediments. The springblooms, for the two stations, are directly related to the decrease of nitrogen (NH4 and NO3), whereas during summer the results are more complex: competition and inhibitions between microphytes and bacteria are obvious. The obtained in situ results are compared with previously published culture experiments with axenic benthic microphytes, which showed selective absorption of nitrogen compounds.
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Références
Admiraal, W., 1977. Tolerance of estuarine benthic diatoms to high concentrations of ammonia, nitrite ion, nitrate ion and orthophosphate. Mar. Biol. 43: 307–315.
Admiraal, W., 1980. Experiments of the ecology of benthic diatoms in the Eems-Dollard estuary. Thesis Rijksuniversiteit, Groningen. Publications and Reports of the project ‘Biological Research in the Eems-Dollard Estuary’, 1980–3: 125 pp.
Admiraal, W., C. Riaux-Gobin & R. W. P. M. Laane, 1987. Interactions of ammonium, nitrate, and D- and L-amino acids in the nitrogen assimilation of two species of estuarine benthic diatoms. Mar. Ecol. Progr. Ser. 40: 267–273.
Asmus, R., 1982. Field measurements on seasonal variation in the activity of primary producers on a sandy tidal flat in the northern Wadden Sea. In ‘Dynamic aspects of marine ecosystems’ 16th EMBS. Texel. Neth. J. Sea Res. 16: 389–402.
Benzécri, J.-P. et al., 1973. L'analyse des données. Tome II; L'analyse des correspondances. Dunod (ed.), Paris. 619 pp.
Cadée, G. C. & J. Hegeman, 1974. Primary production of the benthic microflora living on tidal flats in the Dutch Wadden Sea. Neth. J. Sea. Res. 8: 260–291.
Douchement, C., 1987. Chimie de deux milieux marins anoxiques: eaux hydrothermales et eaux interstitielles des sédiments. Méthodologie des prélèvements et des analyses des composés de l'azote, du phosphore et du silicium. Dynamique de leur circulation en sédiments côtiers. Thèse 3ème cycle. UBO, Brest. 215 pp.
Grall, J.-R., 1972. Recherches quantitatives sur la production primaire du phytoplancton dans les parages de Roscoff. Thèse Doc. Sci. Nat. Paris. 229 pp.
Hallegreaff, G. M. & S. W. Jeffrey, 1985. Description of new chlorophyll a alteration products in marine phytoplankton. Deep-Sea Res. 32: 697–705.
Harper, M. A., 1977. Movements. In D. Werner (ed.), The biology of diatoms. Blackwell. Oxford: 224–249.
Holm-Hansen, O., C. J. Lorenzen, R. W. Holmes & J. D. H. Strickland, 1965. Fluorometric determination of chlorophyll. J. Cons. perm. Inst. Expl. Mer 30: 3–15.
Joint, J. R., 1978. Microbial production of an estuarine mudflat. Estuar. coastal mar. Sci. 7: 185–195.
Lorenzen, C. J., 1966. A method for the continuous measurement of in vivo chlorophyll concentration. Deep-Sea Res. 13: 223–227.
Maestrini, S. T., J. M. Robert & I. Truquet, 1982. Simultaneous uptake of ammonium and nitrate by oyster-pond algae. Mar. Biol. 3: 142–153.
Marker, A. F. H., H. A. Hopgood & C. F. Randal, 1986. Studies on epilithic and epiphytic diatoms in a chalkstream: comparative estimates of chlorophyll a and its derivates. Bt. phycol. J. 21: 171–182.
Mével, G., S. Chamroux, & L. Le Borgne, 1986. Rôle des bactéries benthiques dans les flux de composés azotés à l'interface eau-sédiment. In: P. Tréguer (éd.), AZOC contrat CEE-ENV 825 F — Rapport final, volume 2: 51–65.
Nedwell, D. B., S. E. Hall, A. Andersson, A. F. Hagstrom, & E. B. Lindstrom, 1983. Seasonal changes in the distribution and exchange of inorganic nitrogen between sediment and water in the Northern Baltic (Gulf of Bothnia). Estuar. costal Shelf Sci. 17: 169–179.
Quéguiner, B., 1982. Variations qualitatives et quantitatives du phytoplancton dans un écosystème eutrophe fortement soumis aux effets des marées: la rade de Brest. Thèse 3ème Cycle. UBO Brest. 123 pp.
Quéguiner, B., M. Hafsaoui, & P. Tréguer, 1986. Simultaneous uptake of ammonium and nitrate by phytoplankton in coastal ecosystems. Estuar. coastal shelf Sci. 23: 751–757.
Riaux, C., 1982. La chlorophylle a dans un sédiment estuarien de Bretagne Nord. Ann. Inst. océanogr. 58: 185–203.
Riaux-Gobin, C., 1985. Variations temporelles des sels nutritifs et des pigments chlorophylliens dans l'eau interstitielle d'une vase estuarienne de Bretagne Nord. Cah. Biol. mar. 26: 109–124.
Riaux-Gobin, C., C. A. Llewellyn, B. Klein, & R. F. C. Mantoura, 1987. Microphytobenthos from two subtidal sediments from North Brittany. II: Variations of pigment compositions and concentrations determined by HPLC and conventional techniques. Mar. Ecol. Progr. Ser. 40: 275–283.
Robert, J.-M. & S. Y. Maestrini, 1986. Absorptions simultanées des ions NO -3 et NH +4 par trois diatomées de claires à huîtres, en culture axénique. Phycologia.25: 152–159.
Round, F. E., 1971. Benthic marine diatoms. Oceanogr. Mar. Biol. Ann. Rev., 9: 83–139.
Round, F. E. & J. D. Palmer, 1966. Persistent, vertical-migration rythms in benthic micro-flora. Field and laboratory studies on diatoms from the banks of the river Avon. J. mar. biol. Assoc. UK 46: 191–214.
Sournia, A., J.-L. Birrien, J.-L. Douvillé, B. Klein, & M. Viollier, 1987. A daily study of the diatom spring bloom at Roscoff (France) in 1985. I. The spring bloom within the annual cycle. Estuar. coastal Shelf Sci. 25:355–367.
Tréguer, P., 1986. AZOC Contrat CEE ENV 825 F-Rapport final vol. 1: synthèse. 50 pp.
Tréguer, P. & P.Le Corre, 1975. Manuel d'analyses des sels nutritifs dans l'eau de mer. Utilisation de l'Auto-Analyseur II Technion. L.O.C.-U.B.O., Brest, 2nd edition.
Yamada, H., M. Kayama & K. Fujisawa, 1987. Seasonal changes of concentrations of inorganic nitrogen in coastal marine sediments. Estuar. costal. Shelf. Sci. 24: 585–598.
Yentsch, C. S. & D. W. Menzel, 1963. A method for determination of phytoplankton chlorophyll and phaeophytin by fluorescence. Deep-Sea Res. 10: 1221–1231.
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Riaux-Gobin, C., Douchement, C. & Tréguer, P. Microphytobenthos de deux sédiments subtidaux de Nord Bretagne. Hydrobiologia 178, 11–20 (1989). https://doi.org/10.1007/BF00006110
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DOI: https://doi.org/10.1007/BF00006110