References Cited
- Billings, W. D., 1973: Arctic and alpine vegetation: Similarities, differences and susceptibility to disturbance. Bioscience, 23(12): 697–704.
- Billings, W. D. and Mooney, H. A., 1968: The ecology of arctic and alpine plants. Biological Reviews, 43: 481–529.
- Black, J. N., 1960: The significance of petiole length, leaf area, and light interception in competition between strains of subterranean clover (Trifolium subterraneum L.) grown in swards. Australian Journal of Agricultural Research, 11: 277–291.
- Bliss, L. C., 1956: A comparison of plant development in micro-environments of arctic and alpine tundras. Ecological Monographs, 26: 303–307.
- Bliss, L. C., 1971: Arctic and alpine plant life cycles. Annual Review of Ecology and Systematics, 2: 405–438.
- Connell, J. H., 1983: On the prevalence and relative importance of interspecific competition: Evidence from field experiments. American Naturalist, 122: 661–696.
- Hultén, E., 1959: Studies in the genus Dryas. Svensk Botanisk Tidskrift, 53: 507–542.
- Hultén, E., 1968: Flora of Alaska and Neighboring Territories. Stanford, Ca.: Stanford University Press. 1008 pp.
- Jain, S. K. and Bradshaw, A. D., 1966: Evolutionary divergence among adjacent plant populations. I. The evidence and its theoretical analysis. Heredity, 21: 407–441.
- Klikoff, L. C., 1965: Microenvironmental influence on vegetational pattern near timberline in the central Sierra Nevada. Ecological Monographs, 35: 187–211.
- McGraw, J. B., 1982: Experimental population biology and physiological ecology of Dryas octopetala ecotypes. Ph.D. dissertation, Duke University. 213 pp.
- McGraw, J. B. and Antonovics, J., 1983a: Experimental ecology of Dryas octopetala ecotypes. I. Ecotypic differentiation and life-cycle stages of selection. Journal of Ecology, 71: 879–897.
- McGraw, J. B. and Antonovics, J., 1983b: Experimental ecology of Dryas octopetala ecotypes. II. A demographic model of growth, branching and fecundity. Journal of Ecology, 71: 899–912.
- McGraw, J. B., Chester, A. L., and Stuart, L., 1983: A note on July senescence in tundra plants at Eagle Creek, Alaska, U.S.A. Arctic and Alpine Research, 15: 267–269.
- Miller, P. C., 1982: Environmental and vegetational variation across a snow accumulation area in montane tundra in central Alaska. Holarctic Ecology, 5: 85–98.
- Oberbauer, S. and Miller, P. C., 1979: Plant water relations in montane and tussock tundra vegetation types in Alaska. Arctic and Alpine Research, 11: 69–81.
- Richards, F. J., 1941: The diagrammatic representation of physiological and other experiments designed factorially. Annals of Botany, 5: 249–261.
- Rochow, T. F., 1970: Ecological investigations of Thlaspi alpestre L. along an elevational gradient in the central Rocky Mountains. Ecology, 51: 649–656.
- Scott, D. and Billings, W. D., 1964: Effects of environmental factors on standing crop and productivity of an alpine tundra. Ecological Monographs, 34: 243–270.
- Shaver, G. R., 1981: Personal communication. The Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts 02543.
- Shaver, G. R. and Chapin, F. S.III, 1980: Response to fertilization by various plant growth forms in an Alaskan tundra: Nutrient accumulation and growth. Ecology, 61: 662–675.
- Turner, J., 1977: Effect of nitrogen availability on nitrogen cycling in a Douglas fir stand. Forest Science, 23(3): 307–316.
- Turesson, G., 1922: The species and the variety as ecological units. Hereditas, 3: 100–113.
- Warren Wilson, J., 1959: Notes on wind and its effects on arctic-alpine vegetation. Journal of Ecology, 47: 415–427.