Plant Ecology

, Volume 147, Issue 2, pp 193–203

Factors affecting the population dynamics of Suaeda maritima at initial stages of development

  • M. Tessier
  • J.C. Gloaguen
  • J.C. Lefeuvre
Article

Abstract

This study describes life history and population dynamics of the annual halophyte Suaeda maritima, at initial stages of seedling development, in salt-marshes of the Mont-Saint-Michel Bay. Effects of salinity on seed germination and seedling development were studied both in the laboratory and in the field. Salinity was measured as sediment electrical conductivity. Experiments in the laboratory showed that Suaeda maritima was relatively tolerant to salinity during the germination stage. In the field, germination occurred when soil salinity was minimal. Almost all seeds germinated in the field; this may explain the absence of a persistent seed bank. Salinity did not seem to affect the growth of seedlings either. Mortality in the field was attributed to physical factors such as anoxia during temporary immersion, burial by sediment and tidal uprooting. The intensity of these effects varied according to the location of Suaeda maritima seedlings: in hollows, along the edge of tidal creeks, in gaps among dense vegetation cover, or in pattern with Puccinellia maritima. Perennial vegetation did not restrict Suaeda maritima germination. In contrast, perennials such as Puccinellia maritima and Halimione portulacoides limited the development of Suaeda maritima seedlings since only a small number of this annual emerged beneath their canopies. The fate of seedlings depended to a great extent on the permeability of the perennial canopy to light. Thus, disturbance resulting in bare patches inside the perennial vegetation seemed essential for the development of this annual species. Suaeda maritima can grow in the presence of Puccinellia maritima so long as the latter present as an open matrix. Suaeda maritima may also benefit from protection against desiccation and tidal action where this occurs.

Germination Interspecific interactions Mont-Saint-Michel Bay Soil conductivity Salt-marsh Survivorship 

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References

  1. Adam, P. 1990. Saltmarsh Ecology. Cambridge University Press, New York.Google Scholar
  2. Amiaud, B., Bouzillé, J. B., Tournade, F. & Bonis A. 1998. Spatial patterns of soil salinities in old embanked marshlands in western France. Wetlands 18: 482–494.Google Scholar
  3. Bakker, J. P. 1989. Nature Management by Grazing and Cutting. Kluwer Academic Publishers, Dordrecht.Google Scholar
  4. Bakker, J. P. & De Vries, Y. 1992. Germination and early establishment of lower salt-marsh species in grazed and mown salt marsh. J. Veget. Sci. 3: 247–252.Google Scholar
  5. Bakker, J. P. Dijkstra, M. & Russchen, P. T. 1985. Dispersal, germination and early establishment of halophytes and glycophytes on a grazed and abandoned salt marsh gradient. New Phytol. 101: 291–308.Google Scholar
  6. Beeftink, W. G. 1979. The structure of salt marsh communities in relation to environmental disturbances. Pp. 77–93. In: Jefferies, R. L. & Davy, A. J. (eds.), Ecological Processes in Coastal Environments. Blackwell Scientific Publications, Oxford.Google Scholar
  7. Beeftink, W. G. 1985. Population dynamic of annual Salicornia species in the tidal salt of the Oosterschelde the Netherland. Vegetatio 61: 127–136.Google Scholar
  8. Beeftink, W. G., Daane, M. C., De Munck, W. & Nieuwenhuize, J. 1978. Aspects of population dynamics in Halimione portulacoides communities. Vegetatio 36: 31–43.Google Scholar
  9. Bertness, M. D., Gough, L. & Shumway, S.W. 1992. Salt tolerances and the distribution of fugitive salt marsh plants. Ecology 73: 1842–1851.Google Scholar
  10. Bertness, M. D. & Hacker, S. 1994. Physical stress and positive associations among marsh plants. Amer. Natural. 144: 363–372.Google Scholar
  11. Bertness, M. D. & Yeh, S. M. 1994. Cooperative and competitive interactions in the recruitment of marsh elders. Ecology 75: 2416–2429.Google Scholar
  12. Binet, P. & Boucaud, J. 1968. Dormance, levée de dormance et aptitude à germer en milieu salé dans le genre Suaeda forsk. Bulletin de la société franç aise de physiologie végétale 14: 125–132.Google Scholar
  13. Boucaud, J. 1962. Etude morphologique et écophysiologique de la germination de trois variétés de Suaeda maritima. Bulletin de la société Linnéenne de Normandie 10: 63–73.Google Scholar
  14. Boucaud, J. 1972. Auto-écologie et étude expérimentale des exigences eco-physiologiques de Suaeda maritima (L.) Dum., var. macrocarpa Moq. et var. flexilis Focke*. Oecologia Plantarum 7: 99–123.Google Scholar
  15. Bouchard, V. 1996. Production et devenir de la matiè re organique des halophytes dans un marais salé européen en systè me macrotidal (Baie du Mont Saint Michel). Thesis, Université de Rennes I.Google Scholar
  16. Callaway, R. M. 1994. Facilitative and interfering effects of Arthrocnemum subterminale on winter annuals in California salt marsh. Ecology 75: 681–686.Google Scholar
  17. Castellanos, E. M., Figeroa M. E. & Davy A. J. 1994. Nucleation and facilitation in saltmarsh succession: interactions between Spartina maritima and Arthrocnemum perenne. J. Ecol. 82: 239–248.Google Scholar
  18. Connell, J. H. & Slatyer, R. O. 1977. Mechanisms of succession in natural communities and their role in community stability and organisation. Amer. Natural. 111: 1119–1144.Google Scholar
  19. Davy, A. J. & Smith, H. 1988. Life-history variation and environment. Pp. 1–22. In: Davy, A. J., Hutchings, M. J. & Watkinson, A. R. (eds.), Plant Population Biology. Blackwell Scientific Publishers, Oxford.Google Scholar
  20. Ellison, A. M. 1987. Effects of competition, disturbance, and herbivory on Salicornia europaea. Ecology 68: 576–586.Google Scholar
  21. Harper, J. L. 1977. Population Biology of Plants. Academic Press. New York.Google Scholar
  22. Hutchings, M. J. & Russell, P. J. 1989. The seed regeneration dynamics of a emergent salt marsh. J. Ecol. 77: 615–637.Google Scholar
  23. Jefferies, R. L., Davy, A. J. & Rudmik, T. 1979. The growth strategies of coastal halophytes. Pp. 243–268. In: Jefferies, R. L. & Davy, A. J. (eds.). Ecological Processes in Coastal Environmental. Blackwell Scientific Publications, Oxford.Google Scholar
  24. Jefferies, R. L., Davy, A. J. & Rudmik, T. 1981. Population biology of the salt marsh annual Salicornia europaea agg. J. Ecol. 69: 17–31.Google Scholar
  25. Jefferies, R. L., Jensen, A. & Bazely, D. 1983. The biology of the annual Salicornia europaea agg. at the limit of its range in Hudson Bay. Canad. J. Botany 61: 762–773.Google Scholar
  26. Jigorel, A. 1996. Etude de la sédimentation dans les marais salés du Mont-Saint-Michel, pp. 7–37. In: Lefeuvre J. C. (ed.), Effect of environmental changes on saltmarsh process. final report, volume 2. Laboratoire d'Evolution des Systè mes Naturels et Modifiés, Université de Rennes 1, Muséum National d'Histoire Naturelle.Google Scholar
  27. Keiffer, C. H. & Ungar, I. A. 1997. The effect of extended exposure to hypersaline conditions on the germination of five inland halophyte species. Amer. J. Botany 84: 104–111.Google Scholar
  28. Khan, M. A. & Rizvi, Y. 1994. Effect of salinity, temperature, and growth regulators on the germination and early seedling growth of Atriplex griffithii var stocksii. Canad. J. Botany 72: 475–479.Google Scholar
  29. Khan, M. A. & Ungar, I. A. 1984a. Seed polymorphism and germination responses to salinity stress in Atriplex triangularis Willd. Bot. Gazette 145: 487–494.Google Scholar
  30. Khan, M. A. & Ungar, I. A. 1984b. The effect of salinity and temperature on the germination of polymorphic seeds and growth of Atriplex triangularis Willd. Amer. J. of Botany 73: 1163–1167.Google Scholar
  31. Khan, M. A. & Ungar, I. A. 1986. Life history and population dynamics of Atriplex triangularis. Vegetatio 66: 17–25.Google Scholar
  32. Levasseur, J. E., 1993. Physiographie, végétation et production primaire. Pp. 113–150. In: Lefeuvre, J. C. (ed.), Comparative studies of saltmarsh processes. Commission of the European community. EEC Contract no EV4V-0 172-F (EDR).Google Scholar
  33. Lilliefors, H. W. 1967. On the Kolmogorov-Smirnov test for normality with mean and variance unknown. J. Amer. Statistic Assoc. 62: 399–402.Google Scholar
  34. Rhoades, J. D. 1982. Soluble salts. Pp. 167–179. In: Page, A. L., Miller, R. H. & Keeny, D. R. (eds.), Methodes of soil analysis, part 2: Chemical and microbiological properties. American society of Agronomy, Soil Science Society of America, Madison.Google Scholar
  35. Shumway, S. W. & Bertness, M. D. 1992. Salt stress limitation of seedling recruitment in a salt marsh plant community. Oecologia 92: 490–497.Google Scholar
  36. Torstensson, P. 1987 a. The demography of the annual Spergularia marina on a baltic seashore meadow. Vegetatio 68: 157–168.Google Scholar
  37. Torstensson, P. 1987 b. Population dynamics of the annual halophyte Spergularia marina on a Baltic seashore meadow. Vegetatio 68: 169–172.Google Scholar
  38. Tutin, T. G., Heywood, V. H., Burges, N. A., Valentine, D. H., Walters, S. M. & Webb D. A. 1964- 1980. Flora Europaea. Cambridge University Press, Cambridge.Google Scholar
  39. Ungar, I. A. 1962. Influence of salinity on seed germination in succulent halophytes. Ecology 43: 763–764.Google Scholar
  40. Ungar, I. A. 1978. Halophyte seed germination. Bot. Rev. 44: 233–264.Google Scholar
  41. Ungar, I. A. 1982. Germination ecology of halophytes. Pp. 143–154. In: Sen, D. N. & Rajpurohit K. S. (eds.), Contributions to the Ecology of Halophytes. Junk, The Hague.Google Scholar
  42. Ungar, I. A. 1987. Population ecology of halophyte seeds. Bot. Rev. 53: 301–334.Google Scholar
  43. Ungar, I. A. 1995. Seed germination and seed-bank ecology in halophytes. Pp. 599–628. In: Kigel, J. & Galili G. (eds.), Seed development and germination. Marcel Dekker, New york.Google Scholar
  44. Ungar, I. A. 1998. Are biotic factors significant in influencing the distribution of halophytes in saline habitats? Bot. Rev. 64: 176–199.Google Scholar
  45. Watkinson, A. R. & Davy, A. J. 1985. Population biology of salt marsh and sand dune annuals. Vegetatio 62: 487–497.Google Scholar
  46. Woodell, S. R. J. 1985. Salinity and seed germination patterns in coastal plants. Vegetatio 61: 223–229.Google Scholar

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • M. Tessier
    • 1
  • J.C. Gloaguen
    • 1
  • J.C. Lefeuvre
    • 1
  1. 1.Laboratoire d'Écologie VégétaleCampus de Beaulieu, Université de Rennes 1Rennes CedexFrance

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