Gophers and grassland: a model of vegetation response to patchy soil disturbance
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We present a computer model which simulates population processes and spatial patterning in response to gopher disturbance in an annual grassland community. The model includes the processes of seed production, dispersal, germination and seedling survival of four main grassland species. Runs show that soil disturbance by gophers affects both short-term spatial patterning and long-term species composition. The main determinant of species behaviour is their relative seed dispersal distances, and the model is relatively insensitive to initial species distribution or abundances. The model adequately simulated short-term community patterning, and provided predictions of long-term dynamics which can now be tested using longer-term field experiments.
- Ågren G. I. & Fagerström T., 1984. Limiting dissimilarity in plants: randomness prevents exclusion of species with similar competitive abilities. Oikos 43: 369–375.
- Allen T.F.H., 1986. Hierarchical complexity in ecology: a noneuclidean conception of the dataspace. Vegetatio 69: 17–25.
- Allen T.F.H. & Starr T. B., 1982. Hierarchy: Perspectives for Ecological Complexity. University of Chicago Press, Chicago. 310 pp.
- Collins S. L. & Barber S. C., 1985. Effects of disturbance on diversity in mixed-grass prairie. Vegetatio 64: 87–94.
- Connell J. H. & Keough M. J., 1985. Disturbance and patch dynamics of subtidal marine mammals on hard substrata. In: S. T. A.Pickett & P. S.White (eds), The ecology of natural disturbance and patch dynamics, pp. 125–151. Academic Press, New York.
- Coppock D. L., Dettling J. K., Ellis J. E. & Dyer M. I., 1983. Plant-herbivore interactions in a North American mixed-grass prairie. Oecologia (Berlin) 56: 1–9.
- Grant W. E. & French N. R., 1980. Evaluation of the role of small mammals in grassland ecosystems: a modelling approach. Ecol. Modelling 8: 15–37.
- Hobbs R. J. & Mooney H. A., 1985. Community and population dynamics of serpentine grassland annuals in relation to gopher disturbance. Oecologia (Berlin) 67: 342–351.
- McNaughton S. J., 1968. Structure and function in California grasslands. Ecology 49: 962–972.
- Pickett S. T. A. & White P. S., 1985. The ecology of natural disturbance and patch dynamics. Academic Press, New York. 472 pp.
- Platt W. J. 1975. The colonization and formation of equilibrium plant associations on badger disturbances in a tall-grass prairie. Ecol. Monogr. 45: 285–305.
- Rabinowitz D. & Rapp J. K. 1985a. Colonization and establishment of Missouri prairie plants on artificial soil disturbances II. Detecting small-scale plant-to-plant interactions and separating disturbance from resource provision. Amer. J. Bot. 72: 1629–1634.
- Rabinowitz D. & Rapp J. K., 1985b. Colonization and establishment of Missouri prairie plants on artificial soil disturbances III. Species abundance distributions, survivorship, and rarity. Amer. J. Bot. 72: 1635–1640.
- Rapp J. K. & Rabinowitz D., 1985. Colonization and establishment of Missouri prairie plants on artificial soil disturbances I. Dynamics of forb and graminoid seedlings and shoots. Amer. J. Bot. 72: 1618–1628.
- Sheldon J. C. & Burrows F. M. 1973. The dispersal effectiveness of achene-pappus units of selected compositae in steady amids with convection. New Phytol. 72: 665–675.
- Sousa W. P., 1984. The role of disturbance in natural communities. Ann. Rev. Ecol. Syst. 15: 353–391.
- Sousa W. P., 1985. Disturbance and patch dynamics on rocky intertidal shores. In: S. T. A.Pickett & P. S.White (eds), The ecology of natural disturbance and patch dynamics, pp. 101–124. Academic Press, New York.
- VanTongeren O. & Prentice I. C., 1985. A spatial simulation model for vegetation dynamics. Vegetatio 65: 163–173.
- Gophers and grassland: a model of vegetation response to patchy soil disturbance
Volume 69, Issue 1-3 , pp 141-146
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- Gopher disturbance
- Process model
- Spatial patterning