Skip to main content
Log in

Biological equilibrium in ecosystems 2. Parameters of ecosystems

  • Published:
Folia Geobotanica et Phytotaxonomica Aims and scope Submit manuscript

Abstract

In this paper the Theory of Biological Equilibrium (TBE), as the theoretical basis of the Canonical Hypothesis, is used to compute a set of theoretical parameters of natural ecosystems. These parameters are the individuals: species (I/S); the commonness: rarity (C/U) ration as well as the expected density (d e) and total area (TA) of ecosystems. Results of sampling with nested quadrates are checked against theoretical values. Deviations from expected values of 5 to 10% occur in samples with Natural Biological Equilibrium (NBE); in disturbed and transitional sites a compensation mechanism is found which results in simulated NBE.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

Literature Cited

  • Dyksterhuis, E. J. (1958): Range conservation as based on sites and condition classes.—Journ. Soil and Water Conserv., 13: 152–155.

    Google Scholar 

  • Gleason, H. A. (1939): The individualistic concept of the plant association.—Amer. Midl. Natur., Notre Dame (Indiana), 21: 92–110.

    Google Scholar 

  • Greig-Smith, P. (1964): Quantitative plant ecology. 2nd ed.—London.

  • Hopkins, B. (1955): The species-area relations of plant communities.—Journ. Ecol., Cambridge,43: 409–426.

    Google Scholar 

  • Johnson, W. M. (1956): The effect of grazing on plant composition, vigor, and growth of pine-bunchgrass ranges in central Colorado.—Ecol., Durham (U. S. A.),37: 790–798.

    Google Scholar 

  • Kilburn, P. D. (1966): Analysis of the species-area relation.—Ecol. Durham (U. S. A.),47: 831–843.

    Google Scholar 

  • Leeuwen, C. G. van (1966): A relation theoretical approach to pattern and process in vegetation.—Wentia, Amsterdam, 15: 25–46.

    Google Scholar 

  • Lodge, R. W., Campbell, J. B., Smoliak, S., etJohnston, A. (1971): Management of the western range.—Publ. 1425, Canada Dept. Agricult.

  • Looman, J. (1969): The fescue grasslands of western Canada.—Vegetatio, The Hague,19: 128–145.

    Google Scholar 

  • Looman, J. (1976): Biological equilibrium in ecosystems. 1. A theory of biological equilibrium.—Folia Geobot. Phytotax., Praha,11: 1–21.

    Google Scholar 

  • Maarel, E. van der (1966): Over vegetatiestructuren,-relaties en-systement.—Ph. D. Thesis, University, Utrecht.

  • Preston, F. W. (1962a): The canonical distribution of commonness and rarity: Part I.—Ecol, Durham (U. S. A.),43: 185–215.

    Google Scholar 

  • Preston, F. W. (1962b): The canonical distribution of commonness and rarity: Part II.—Ecol., Durham (U. S. A.),43: 410–432.

    Google Scholar 

  • Williams, C. B. (1964). Patterns in the balance of nature.—London.

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Looman, J. Biological equilibrium in ecosystems 2. Parameters of ecosystems. Folia geobot. phytotax. 11, 113–135 (1976). https://doi.org/10.1007/BF02854754

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02854754

Keywords

Navigation