Abstract
I examine the process of plant community colonization through a chronosequence study of permanent plots spanning 45 years on a 70-year-old subalpine earthflow in south-western Colorado, USA.
While local diversity and average density of vegetation remained stable throughout the study, the overall diversity increased through the early years of the study with little change over the past 20 years. A gradual shift in species composition occurred through time with species with good dispersal and stress tolerance abilities colonizing the site initially followed by more generalist species.
After over 70 years the disturbed communities remained distinct from adjacent relatively undisturbed areas in diversity, density, and species composition. Soil translocation experiments suggest that it is the severe microclimate of the earthflow which is limiting further colonization of the site.
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References
Abugov, R., 1982. Species diversity and the phasing of disturbance. Ecology 63: 289–293.
Auclair, A. N. & Goff, F. G. 1971. Diversity relations of upland forests in the Western Great Lakes area. The American Naturalist 105: 499–528.
Barrell, J. 1969. Flora of the Gunnison Basin. Natural Land Institute, Rockford, Ill.
Belesky, J. 1982. Diesel oil spill in a subalpine meadow: nine years of recovery. Canadian J. Botany 60: 906–910.
Burrows, C. J. 1990. Processes of vegetation change. Unwin Hyman, London.
Clements, F. E. 1916. Plant succession: an analysis of the development of vegetation. Carnegie Institute Publication No. 242. Washington, D.C.
Connel, J. R. & Slatyer, R. O. 1977. Mechanisms of succession in natural communities and their role in comunity stability and organization. American Naturalist 111: 1119–1144.
Connell, J. R. & Sousa, W. P. 1983. On evidence needed to judge stability and persistence. America Naturalist 121: 789–824.
Cowles, H. C. 1899. The ecological relations of the vegetation on sand dunes of Lak Michigan. Botanical Gazette 27: 95–117.
Curtin, C. G. 1992. Disturbed subalpine site restoration factors studied (Colorado). Restoration and Management Notes 10: 91–92.
Curtin, C. G. 1993. Microclimate Amelioration may be critical to recovery of subalpine ecosystems (Colorado). Restoration and Management Notes. (In Press).
Curtin, C. G. 1993b. Chronosequence and toposequence examination of the colonization of disturbed subalpine plant communities. Ms. thesis, University of Wisconsin, Madison.
Del Moral, R. 1983. Competition as a control mechanism in subalpine meadows. American Journal of Botany 70: 1228–1236.
Del Moral, R. 1985. Competitive effects on the structure of subalpine meadow communities. Canadian Journal of Botany 63: 1444–1451.
Del Moral, R. & Wood, D. M. 1988. Dynamics of herbaceous vegetation recovery on Mount St. Helens, Washington, USA, after a volcanic eruption. Vegetatio 74: 11–27.
Franklin, C., Bledsoe, S. & Callahan, J. T. 1990. Contributions of the long-term ecological research program. Bioscience 40: 509–523.
Goldberg, D. E. & Turner, M. 1986. Vegetation change and plant demography in permanent plots in the Sonoran desert. Ecology 67: 695–712.
Goley, F. B. 1974. Structural and functional properties as they influence ecosystem stability. Structure, functioning and management of ecosystems. Procedures of the First International Congress on Ecology, PUDOC, Wageningen.
Grime, J. P. 1977. Evidence for the existence of three primary strategies in plants and its relevance to ecological and evolutionary theory. American Naturalist 111: 1169–1194.
Grime, J. P. 1979. Plant strategies and vegetation processes. John Wiley & Sons, Chichester.
Harrington, H. D. 1964. Manual of the plants of Colorado. Colorado A & M College, Denver, Co.
Horn, H. S. 1974. The ecology of secondary succession. Annual Review of Ecology and Systematics. 5: 25–38.
Huston, M. 1979. A general hypothesis of species diversity. The American Naturalist. 113: 81–101.
Langenheim, J. H. 1949. Physiography and plant ecology on a subalpine earthflow, Gunnison County, Colorado. M.S. Thesis, University of Minnesota.
Langenheim, J. H. 1955. Flora of the Crested Butte Quadrangle, Colorado. Madrono. 13: 64–78.
Langenheim, J. H. 1956. Plant succession on a subalpine earthflow in Colorado. Ecology 37: 301–317.
Likens, G. E. 1989. Long-term studies in ecology: approaches and alternatives. Springer-Verlag, New York.
Loucks, D. L. 1970. Evolution of diversity, efficiency and community stability. American Zoologist 10: 17–25.
Margelef, R. 1968. On certain unifying principals of ecology. The American Naturalist 97: 357–374.
Magnuson, J. J. 1990. Long-term ecological research and the invisible present. Bioscience. 40: 495–501.
Mueller-Dombois, D. & Ellenberg, H. 1974. Aims and methods of vegetation ecology. John Wiley & Sons, New York.
Odum, E. P. 1969. The strategy of ecosystem development. Science 164: 262–270.
Orians, G. H. 1974. Diversity, stability and maturity in natural ecosystems. W. H.van Dobben and R. H. Lowe-McConnell, eds. Unifying concepts in ecology. Dr W. Junk, The Hague.
Peet, R. K. 1974. The measurement of species diversity. Annual Review of Ecology and Systematics 5: 285–307.
Peet, R. K. 1978. Forest vegetation of the Colorado front range: patterns of species diversity. Vegetatio 37: 65–78.
Peet, R. K. & Christensen, N. L. 1980. Succession: a population process. Vegetatio 43: 131–140.
Slobodkin, L. B. & Sanders, H. L. 1969. On the contribution of environmental predictability to species diversity. Brookhaven Symposia on Biology, No. 22: 83–96.
Swanson, F. J. & Sparks, R. E. 1990. Long-term ecological research and the invisible place. Bioscience. 40: 502–508.
Tilman, D. 1990. Constraintsand tradeoffs — toward a predictive theory of competition and succession. Oikos 58: 3–15.
Turbak, S. 1969. Undergraduate Research Projects/Natural Science Foundation-Unpublished Study Rocky Mountain Biological Laboratory Library. Gothic, Colorado.
Warming, E. 1891. De psammaphile formationer: Danmark vidensk meddel. Fra den naturhist. Foren. 1891: 153. Wever, W. A. 1976. Rocky Mountain Flora. Colorado Associated Press, Boulder, Colorado.
Weber, W. A. 1987. Colorado flora: western slope. Colorado Associated University Press, Boulder, Co.
Whittaker, R. H. 1965. Dominance and diversity in a land community. Science 147: 250–260.
Whittaker, R. H. 1969. Evolution of diversity in plant communities. Brookhaven Symposia in Biology 22: 178–196.
Whittaker, R. H. 1974. ‘Stability’ in plant communities. Structure, functioning and management of ecosystems. Procedures of the First International Congress on Ecology PUDOC, Wageningen.
Whisenant, S. G. & Wagstaff, F. J. 1991. Successional trajectories of a grazed salt desert shrubland. Vegetatio 94: 133–140.
Wood, D. M. & Del Moral, R. 1987. Mechanisms of early primary succession in subalpine habitats on Mount St. Helens. Ecology 68: 780–790.
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Curtin, C.G. The gothic earthflow revisited: a chronosequence examination of colonization on a subalpine earthflow. Vegetatio 111, 137–147 (1994). https://doi.org/10.1007/BF00040333
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DOI: https://doi.org/10.1007/BF00040333