Abstract
In some hardwater rivers of the Seine basin (France), the development ofan encrusting cyanobacterial microflora may gradually lead to a cementation ofriver bed sediments, to a reduction of spawning ground areas and to a loss ofbenthic floral and faunal diversity. Current methods for build-up management arebased on mechanical dredging of the stream bed. In the short term, the habitatdiversity and microfaunal diversity are improved, but in 1–3years the cyanobacterial growth resumes and the bed sediments arecemented again. The early growth stages of stromatolitic structures on newlyavailable substrata were studied for three years in the river Eaulne(Upper-Normandy, France) in relation with microfloral development, sedimentaryprocesses and water quality. Seasonal current velocity variations appeared tocontrol the construction process (colonization dynamics and dependency ofstromatolite growth to mat extension) through substratum availability andnutrient renewal. Under the conditions allowing an optimal microfloraldevelopment, the carbonate precipitation rates were inversely correlated withsubstratum grain size, i.e. the maximal encrusting biomass was hosted bygravels. Homogeneous substrata showed the highest short-term potentialities forhigh sediment cementation rate, whereas heterogeneous, mixed grain size had thehighest potentialities for long-term colonization by the encrusting microflora.
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American Public Health Association, American Water Works Association, and Water Pollution Control Federation 1980. Standard Methods for the Examination of Water and Wastewater. 15th edn. American Public Health Association, Washington, DC.
Anagnostidis K. and Komarek J. 1988. Modern approach to the classification system of cyanophytes. 3. Oscillatoriales. Archiv für Hydrobiologie, Algological Studies 50: 327–472.
Anagnostidis K. and Komarek J. 1990. Modern approach to the classification system of cyanophytes. 5. Stigonematales. Archiv für Hydrobiologie, Algological Studies 59: 1–73.
Arp G., Wedemeyer N. and Reitner J. 2001. Fluvial tufa formation in a hard-water creek (Deinschwanger Bach, Franconian Alb, Germany). Facies 44: 1–22.
Biggs B. 1996. Patterns in benthic algae in streams. In: Stevenson R.J., Bothwel M.L. and Lowe R.L. (eds), Algal Ecology: Freshwater Benthic Ecosystems. Academic Press, New York, pp. 31–56.
Biggs B., Goring D. and Nikora V. 1998. Subsidy and stress response of stream periphyton to gradients in water velocity as a function of community growth form. Journal of Phycology 35: 598–607.
Borchardt M.A. 1996. Nutrients. In: Stevenson R.J., Bothwel M.L. and Lowe R.L. (eds), Algal Ecology: Freshwater Benthic Ecosystems. Academic Press, New York, pp. 183–227.
Bothwell M. 1985. Phosphorus limitation of lotic periphyton growth-rates: an intersite comparison using continuous flow-troughs (Thompson river, British Columbia). Limnology and Oceanography 30: 527–542.
Bourrelly P. 1966. Les Algues d'Eau Douce, Initiation à la Systématique. I: Les Algues Vertes. Boubée and Cie, Paris.
Bourrelly P. 1968. Les Algues d'Eau Douce, Initiation à la Systématique. II: Les Algues Jaunes et Brunes. Boubée and Cie, Paris.
Bourrelly P. 1970. Les Algues d'Eau Douce, Initiation à la Systématique. III: Les Algues Bleues et Rouges. Boubée and Cie, Paris.
Casanova J. and Lafont R. 1985. Les cyanophycées encroutantes des eaux courantes du Var. Ver-handlungen der Internationale Vereinigung für Theoretische und Angewandte Limnologie 22: 136–139.
Caudwell C., Lang J. and Pascal A. 1997. Etude expérimentale de la lamination des stromatolithes à Rivularia haematites en climat tempéré: édification des lamines micritiques. Comptes Rendus de l'Académie des Sciences de Paris, série IIa 324: 883–890.
Dodds W.K. 1991. Factors associated with dominance of the filamentous green alga Cladophora glomerata. Water Research 25: 1325–1332.
Fiałkowska E. and Pajdak-Stos A. 1997. Inducible defense against a ciliate grazer, Pseudomicrothorax dubius, in two strains of Phormidium (Cyanobacteria). Proceedings of the Royal Society of London B 264: 937–941.
Freytet P. 1989. Contribution à l'étude des tufs du bassin de Paris: Les organismes constructeurs (aspects microscopiques). Bulletins du CNRS 38: 35–53.
Freytet P. and Plet A. 1990. Les formations stromatolitiques (tufs calcaires) récentes de la région de Tournus (Saône et Loire). Géobios 24: 123–139.
Freytet P. and Plet A. 1996. Modern freshwater microbial carbonates: the Phormidium stromatolites of southeastern Burgundy (Paris Basin, France). Facies 34: 219–238.
Freytet P. and Verrecchia E. 1998. Freshwater organisms that build stromatolites: a synopsis of biocrystallization by prokaryotic and eukariotic algae. Sedimentology 45: 535–563.
Germain H. 1981. Flore des Diatomées d'Eaux Douces et Saumâtres. Société Nouvelle des Editions Boubée, Paris.
Golubic S. 1976. Taxonomy of extant stromatolite-building cyanophytes. In: Walter M.R. (ed.), Development in Sedimentology Vol. 20. Elsevier, Amsterdam, pp. 113–126.
Horner R.R., Welch E.B., Seeley M.R. and Jacoby J.M. 1990. Response of periphyton to changes in current velocity, suspended sediment and phosphorus concentration. Freshwater Biology 24: 215–232.
Komarek J. and Anagnostidis K. 1989. Modern approach to the classification system of cyanophytes. 4. Nostocales. Archiv für Hydrobiologie, Algological Studies 56: 247–345.
Merz-Preiß M. and Riding R. 1999. Cyanobacterial tufa calcification in two freshwater streams: ambient environment, chemical thresholds and biological processes. Sedimentary Geology 126: 103–124.
Monty C. 1973. Remarques sur la nature, la morphologie et la distribution spatiale des stromatolites. Sciences de la Terre 18: 189–212.
Pajdak-Stós A., Fiałkowska E. and Fyda J. 2001. Phormidium automnale (Cyanobacteria) defense against three grazer species. Aquatic Microbial Ecology 23: 237–244.
Pitois F., Jigorel A. and Bertru G. 2001. Colonization dynamics of an encrusting cyanobacterial mat in a hardwater river (Eaulne, France). Geomicrobiology Journal 18: 139–155.
Poff N.L., Voelz N., Ward J. and Lee R. 1990. Algal colonization under four experimentally controlled regimes in a high mountain stream. Journal of the North American Benthological Society 9: 303–318.
Rempel L., Richardson J. and Healey M. 2000. Macroinvertebrate community structure along gradients of hydraulic and sedimentary conditions in a large gravel-bed river. Freshwater Biology 45: 57–73.
Revsbech N. and Jorgensen B. 1983. Photosynthesis of benthic microflora measured with high spatial resolution by the oxygen microprofile method: capabilities and limitations of the method. Limnology and Oceanography 28: 749–756.
Revsbech N., Jorgensen B., Blackburn T. and Cohen Y. 1983. Microelectrode studies of the photosynthesis and O2, H2 S and pH profiles of a microbial mat. Limnology and Oceanography 28: 1062–1074.
Sabater S. 2000. Structure and architecture of a stromatolite from a Mediterranean stream. Aquatic Microbial Ecology 21: 161–168.
Sabater S., Gregory S. and Sedell J. 1998. Community dynamics and metabolism of benthic algae colonizing wood and rock substrata in a forest stream. Journal of Phycology 34: 561–567.
Stevenson R.J. and Glover R. 1993. Effect of algal density and current on ion transport through periphyton communities. Limnology and Oceanography 38: 1276–1281.
Stumm W. and Morgan J.J. 1982. Aquatic Chemistry: An Introduction Emphasizing Chemical Equilibria in Natural Waters. 2nd edn. Wiley Interscience, New York.
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Pitois, F., Jigorel, A. & Bertru, G. Development of cyanobacterial build-up and evolution of river bed morphology in the chalk stream Eaulne (Upper-Normandy, France). Biodiversity and Conservation 12, 621–636 (2003). https://doi.org/10.1023/A:1022412211915
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DOI: https://doi.org/10.1023/A:1022412211915