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Oecologia

, Volume 26, Issue 1, pp 9–31 | Cite as

Productivity relations in a Carex-dominated ecosystem

  • A. N. D. Auclair
  • A. Bouchard
  • J. Pajaczkowski
Article

Summary

Seasonal and total primary productivity was measured for a Carex meadow in southern Quebec, Canada. Forty-five one-meter2 plots were sampled for dry weight biomass, species composition, structure (species density, diversity, height) and soil parameters including macronutrient concentrations (Ca, K, Mg, Na, N, P), pH, organic matter, and water depth. Shoot net productivity and litter decomposition rates were computed for 20-day intervals May–September, inclusive. Relationships between all parameters were examined by principal components analysis.

Dominant species included Carex lacustris, C. aquatilis, Calamagrostis canadensis, and Typha angustifolia. For a 130-day growth period, mean shoot net productivity was 6.3 g·m-2· da-1 and terminal standing crop 807 g·m-2. Terminal standing crop was very close to above ground biomass predicted by the Gorham equation based on thermal relations for Carex ecosystems and to total accumulated litter mass (779 g·m-2). Seasonal production showed a strong bimodal pattern with peak productivities in mid-June (15.3 g·m-2·da-1) and mid-July (4.3 g·m-2·da-1). Decomposition of the previous year's litter was 81% complete by late September.

Soil fertility, fire incidence, and topographic position were the three most important gradients resolved by principal components analysis. The first component distinguished sediment-rich Typha angustifolia communities near open water from oligotrophic stands of Carex spp. on central areas of the meadow. Production levels correlated closely with extractable soil calcium (r=0.40**) and phosphorus levels (r=0.39**). Species diversity and stem density related inversely to productivity on this component. Fire incidence (component II) had a marked effect on species diversity due to surface scarification and removal of litter mass. Component III was a topographic gradient separating composition, and community structure.

Magnesium and sodium levels decreased from upland to open water. Soil phosphorus increased markedly at water's edge related to mineral input by sedimentation. Pattern of N, P, K, and Ca coincided closely with total shoot production and litter mass levels suggesting closed biotic cycles of these elements.

A model accounting for species diversity levels in Carex meadow was formulated based on the assumption that high productivity results in competitive species elimination.

Keywords

Litter Mass Litter Decomposition Rate Fire Incidence Total Primary Productivity Macronutrient Concentration 
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.

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References

  1. Auclair, A.N., Bouchard, A., Pajaczkowski, J. Plant composition and species relations in the Huntington Marsh, Quebec. Canad. J. Bot. 51, 1231–1247 (1973)Google Scholar
  2. Auclair, A.N., Goff, F.G.: Diversity relations of upland forests in the western Great Lakes area. Amer. Nat. 105, 499–528 (1971)Google Scholar
  3. Austin, M.P., Noy-Meir, I.: The problem of non-linearity in ordination: experiments with two-gradient models. J. Ecol. 59, 763–773 (1971)Google Scholar
  4. Bernard, J.M.: Production ecology of wetland sedges: the genus Carex. Polski Arch. Hydrobiol. 20, 207–214 (1973)Google Scholar
  5. Bernard, J.M.: Seasonal changes in standing crop and primary production in a sedge wetland and an adjacent dry old-field in central Minnesota. Ecology 55, 350–359 (1974)Google Scholar
  6. Bernard, J.M., Macdonald, J.G., Jr.: Primary production and life history of Carex lacustris. Canad. J. Bot. 52, 117–123 (1974)Google Scholar
  7. Björk, S.: Ecologic investigation of Phragmites communis. Studies in theoretic and applied limnology. Folia limnol. Scand. 14, 1–248 (1967)Google Scholar
  8. Bliss, L.C.: Arctic and alpine plant life cycles. Ann. Rev. Ecol. Syst. 2, 405–438 (1971)Google Scholar
  9. Boyd, C.E.: Production, mineral nutrient absorption, and biochemical assimilation by Justicia americana and Alternanthera philoxeroides. Arch. Hydrobiol. 66, 139–160 (1969)Google Scholar
  10. Boyd, C.E.: Production, mineral accumulation and pigment concentrations in Typha latifolia and Scirpus americanus. Ecology 51, 285–290 (1970)Google Scholar
  11. Boyd, C.E., Hess, L.W.: Factors influencing shoot production and mineral nutrient levels in Typha latifolia. Ecology 51, 296–300 (1970)Google Scholar
  12. Bray, J.R.: Estimates of energy budgets for a Typha (cattail) marsh. Science 136, 1119–1120 (1962)Google Scholar
  13. Buttery, B.R., Williams, W.T., Lambert, J.M.: competition between Glyceria maxima and Phragmites communis in the region of Surlingham Borad. II. The Fen Gradient. J. Ecol. 53, 183–195 (1965)Google Scholar
  14. Cooley, W.W., Lohnes, P.R.: Multivariate data analysis. New York: Wiley 1971Google Scholar
  15. Cruz, A.A. de la: The role of tidal marsches in the productivity of coastal waters. Assoc. Southeast. Biol. Bull. 20, 147–156 (1973)Google Scholar
  16. Curtis, J.T.: The vegetation of Wisconsin: an ordination of plant communities. Madison, Wisconsin: Univ. of Wisconsin Press 1959Google Scholar
  17. Dukyjorá, D., Kvet, J.: Comparison of biomass production in reedswamp communities growing in South Bohemia and South Moravia. In: Productivity of terrestrial ecosystems production processes. PT-PP/IBP Rep., No. 1, pp. 71–78. Praha: Czechosl. Akad. Sci. 1970Google Scholar
  18. Evans, L.T., Wardlaw, I.F., Williams, C.N.: Environmental control of growth. In: Grasses and grasslands (C. Barnard, ed.), pp. 102–125. London: MacMillan 1964Google Scholar
  19. Fernald, M.L.: Gray's Manual of Botany, 8th ed. New York, N.Y.: American Book 1950Google Scholar
  20. Ferrari, T.J., Mol, J.: Factor analysis of causal models. Neth. J. Agric. Sci. 15, 38–49 (1967)Google Scholar
  21. Fonda, R.W., Bliss, L.C.: Annual carbohydrate cycle of alpine plants on Mt. Washington, New Hampshire. Bull. Torrey Bot. Club 93, 268–277 (1966)Google Scholar
  22. Forbes, R.S.: Decomposition of agricultural crop debris. In: Biology of plant litter decomposition (C.H. Dickinson, G.J.F. Pugh, eds.), Vol. 2, pp. 723–742 (1974)Google Scholar
  23. Gittins, R.: The application of ordination techniques. In: Ecological aspects of the mineral nutrition of plants (J.H. Rorison, ed.). Symposium of the British Ecological Society, pp. 37–66. Oxford: Blackwell 1968Google Scholar
  24. Gorham, E.: The relationship between standing crop in sedge meadows and summer temperature. J. Ecol. 62, 487–492 (1975)Google Scholar
  25. Gorham, E., Pearsall, W.H.: Production ecology. III. Shoot production in Phargmites in relation to habitat. Oikos 7, 206–214 (1956)Google Scholar
  26. Greig-Smith, P.: Quantitative plant ecology, 2nd ed. London: Butterworth 1964Google Scholar
  27. Horn, H.S.: The ecology of secondary succession. Ann. Rev. Ecol. Sys. 5, 25–37 (1975)Google Scholar
  28. Jervis, R.A.: Primary production in the freshwater marsh ecosystem of Troy Meadows, New Jersey. Bull. Torr. Bot. Club 96, 209–231 (1969)Google Scholar
  29. Keefe, C.W.: Marsh production: a summary of the literature. Contri. Mar. Sci. 16, 163–181 (1972)Google Scholar
  30. Leigh, E.G.: On the relation between the productivity, biomass, diversity, and stability of a community. Proc. Nat. Acad. Sci. (Wash.) 53, 777–783 (1968)Google Scholar
  31. List, R.G.: Smithsonian meterological tables, 6 revised ed., Smithsonian Miscellaneous Collections, Vol. 114 (1951)Google Scholar
  32. Loucks, O.L.: Evolution of diversity, efficiency, and community stability. Amer. Zoologist 10, 17–25 (1970)Google Scholar
  33. Margalef, D.R.: Information theory in ecology. Gen. Syst. 3, 37–71 (1957)Google Scholar
  34. Margalef, D.R.: On certain unifying principles in ecology. Amer. Natur. 97, 357–374 (1963)Google Scholar
  35. Margalef, D.R.: Perspectives in ecological theory. Chicago: Univ. of Chicago Press 1968Google Scholar
  36. McNaughton, S.J.: Structure and function in California grasslands. Ecology 49, 962–973 (1968)Google Scholar
  37. Meggitt, W.F.: Weed control methods, losses and costs due to weeds, and benefits of weed control in maize. In: Technical papers of the FAO International Conference on Weed Control, June, 1970, Davis, California, pp. 87–100 (1970)Google Scholar
  38. Mellinger, M.V., McNaughton, S.J.: Structure and function of successional vascular plant communities in central New York. Ecol. Monogr. 45, 161–182 (1975)Google Scholar
  39. Menhinick, E.F.: A comparison of some species-individuals diversity indices applied to samples of field insects. Ecology 45, 859–861 (1961)Google Scholar
  40. Milner, C., Hughes, R.E.: Methods for the measurement of the primary production of grassland. IBP handbook No. 6. Oxford: Blackwell 1968Google Scholar
  41. Mörnsjö, T.: Studies on vegetation and development of a peatland in Scania, south Sweden. Opera Bot No. 24 (1969)Google Scholar
  42. Odum, E.P.: The strategy of ecosystem development. Science 164, 262–270 (1969)Google Scholar
  43. Orloci, L.: Geometric models in ecology. I. The theory and application of some ordination methods. J. Ecol. 54, 193–215 (1966)Google Scholar
  44. Orloci, L.: Data centering: review and evaluation with reference to component analysis. Syst. Zool. 16, 208–212 (1967)Google Scholar
  45. Pajaczkowski, J.: Plant composition and species relations on the Huntingdon Marsh, Quebec. M. Sc. Thesis, Biology Dept. McGill University. Montreal (1972)Google Scholar
  46. Patten, B.C.: Plankton: optimum diversity structure of a summer community. Science 140, 894–898 (1963)Google Scholar
  47. Pearsall, W.H., Gorham, E.: Production ecology. I. Standing crops of natural vegetation. Oikos 7, 193–201 (1956)Google Scholar
  48. Pielou, E.C.: An introduction to mathematical ecology. New York: Wiley 1969Google Scholar
  49. Pomeroy, L.R., Johannes, R.E., Odum, E.P., Roffman, B.: The phosphorus and zinc cycles and productivity of the salt marsh. In: Proc. 2nd. Natl. Symp. on Radioecology (D.J. Nelson, F.C. Evans, eds.), pp. 412–419 (1969)Google Scholar
  50. Ranwell, D.C.: Spartina salt marshes in southern England. III. Rates of establishment, succession and nutrient supply at Bridgewater Bay, Somerset. J. Ecol. 52, 95–105 (1964)Google Scholar
  51. Seal, H.L.: Multivariate statistical analysis for biologists. London: Methuen 1964Google Scholar
  52. Shannon, C.E., Weaver, W.: The mathematical theory of communication, 117 pp. Urbana: Univ. of Illinois Press 1962Google Scholar
  53. Sheedy, J.D., Johnson, F.L., Risser, P.G.: A model for phosphorus and potassium flux in a tall-grass prairie. Southwest Natur. 18, 135–149 (1973)Google Scholar
  54. Simpson, E.H.: Measurement of diversity. Nature (Lond.) 163, 688 (1949)Google Scholar
  55. Singh, J.S., Misra, R.: Diversity, dominance, stability and net production in the grasslands at Varanasi, India. Canad. J. Bot. 47, 425–427 (1960)Google Scholar
  56. Sinha, R.N., Wallace, H.A.H., Chebib, F.S.: Principal-component analysis of interrelations among fungi, mites, and insects. Ecology 50, 536–547 (1969)Google Scholar
  57. Stålfelt, M.G.: Stålfelt's plant ecology: plants, the soil, and man, 592 pp. New York: Wiley 1972Google Scholar
  58. Swan, J.N.A.: An examination of some ordination problems by use of simulated vegetational data. Ecology 51, 89–102 (1970)Google Scholar
  59. Tamm, C.O., Troedsson, T.: An example of the amounts of plant nutrients supplied to the ground in road dust. Oikos 6, 61–70 (1955)Google Scholar
  60. Vitt, D.H., Slack, N.G.: An analysis of the vegetation of Sphagnum-dominated kettle-hole bogs in relation to environmental gradients. Canad. J. Bot. 53, 332–359 (1975)Google Scholar
  61. Walker, B.H., Wehrhahn, C.F.: Relationships between derived vegetation gradients and measured environmental variables in Saskatchewan wetlands. Ecology 52, 85–95 (1971)Google Scholar
  62. Wein, R.W., Bliss, L.C.: Changes in arctic Eriophorum tussock communities following fire. Ecology 54, 845–852 (1973)Google Scholar
  63. Westlake, D.F.: Comparisons of plant productivity. Biol. Rev. 38, 385–425 (1963)Google Scholar
  64. Westlake, D.F.: The biomass and productivity of Glyceria maxima. I. Seasonal changes in biomass. J. Ecol. 54, 745–753 (1966)Google Scholar
  65. Whiteside, M.C., Harnsworth, R.V.: Species diversity in Chydorid (cladocera) communities. Ecology 48, 664–667 (1967)Google Scholar
  66. Whittaker, R.H.: Evolution and measurement of species diversity. Taxon 21, 213–251 (1972)Google Scholar
  67. Williams, C.B.: Possible relationships between plankton-diatom species numbers and water-quality estimates. Ecology 45, 809–823 (1964)Google Scholar
  68. Wilson, C.V.: The climate of Quebec. Climatic atlas, Part I. Canadian Meteorological Service, Ottawa, Canada (1971)Google Scholar
  69. Zicker, W.A.: An analysis of Jefferson county vegetation using surveyor's records and present day data. M.S. Thesis, Univ. of Wisconsin (1955)Google Scholar

Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • A. N. D. Auclair
    • 1
  • A. Bouchard
    • 1
  • J. Pajaczkowski
    • 1
  1. 1.Biology DepartmentMcGill UniversityMontrealCanada

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