Geography Reference
In-Depth Information
Harsch, M. A., Hulme, P. E., McGlone, M. S., and Duncan, R. P. 2009. Are treelines ad-
vancing? A global meta-analysis of treeline response to climate warming. Ecology
Letters 12: 1040-1049.
Hättenschwiler, S., and Smith, W. K. 1999. Seedling occurrence in alpine treeline con-
ifers: A case study from the central Rocky Mountains, USA. Acta Oecologica 20:
219-224.
Hedberg, O. 1951. Vegetation belts of the East African mountains. Svensk Botanisk Tid-
skrift 45: 140-202.
Hedberg, O. 1961. The phytogeographical position of the afroalpine flora. Recent Ad-
vances in Botany 1: 914-919.
Hedberg, O. 1965. Afroalpine flora elements. Webbia 19: 519-529.
Hedberg, O.1969. Evolution and speciation in a tropical high mountain flora. Biology
Journal of the Linnean Society 1: 35-148.
Hedberg, O. 1971. Evolution of the afroalpine flora. In W. L. Stem, ed., Adaptive Aspects
of Insular Evolution (pp. 16-23). Pullman: Washington State University Press.
Hedberg, O. 1995. Features of afroalpine plant ecology. Acta Phytogeographica Suecica
49: 1-144.
Heine, E. M. 1937. Observations on the pollination of New Zealand flowering plants.
Royal Society of New Zealand, Transactions 67: 133-148.
Heinrich, B., and Raven, P. H. 1972. Energetics and pollination ecology. Science 176:
597-602.
Hessl, A. E., and Baker, W. D. 1997. Spruce and fir regeneration and climate in the
forest-tundra ecotone of Rocky Mountain National Park, Colorado, U.S.A. Arctic and
Alpine Research 29: 173-183.
Hickman, J. C. 1974. Pollination by ants: A low energy system. Science 148: 1290-1292.
Hiemstra, C. A., Liston, G. E., and Reiners, W. A. 2002. Snow redistribution by wind
and interactions with vegetation at upper treeline in the Medicine Bow Mountains,
Wyoming, U.S.A. Arctic Antarctic and Alpine Research 34: 262-273.
Hill, R. S., and Brodribb, T. J. 1999. Southern conifers in time and space. Australian
Journal of Botany 47: 639-696
Hoch, G., and Körner, C. 2005. Growth, demography, and carbon relations of Polylepis
trees at the world's highest treeline. Functional Ecology 19: 941-951.
Hocking, B. 1968. Insect-flower associations in the high arctic with special reference to
nectar. Oikos 19: 359-388.
Hoffman, R. S., and Taber, R. D. 1967. Origin and history of Holarctic tundra ecosys-
tems, with special reference to their vertebrate fauna. In H. E. Wright and W. H.
Osburn, eds., Arctic and Alpine Environments (pp. 143-170). Bloomington: Indiana
University Press.
Holderegger, R., and Thiel-Egenter, C. 2009. A discussion of different types of glacial
refugia used in mountain biogeography and phylogeography. Journal of Biogeo-
graphy 36: 476-480.
Holderegger, R., Thiel-Egenter, C., and Parisod, C. 2011. Marie Brockmann-Jerosch and
her influence on Alpine phylogeography. Alp Botany, 121: 5-10.
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