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Environmental and Vegetational Variation across a Snow Accumulation Area in Montane Tundra in Central Alaska
Philip C. Miller
Vol. 5, No. 2, The Availability and Utilization of Resources in Tundra Ecosystems: Proceedings of a Workshop Held in San Diego, California 9-12 October 1978 (Apr., 1982), pp. 85-98
Stable URL: http://www.jstor.org/stable/3682443
Page Count: 14
You can always find the topics here!Topics: Snow, Nitrogen, Deciduous shrubs, Vegetation, Phosphorus, Growing seasons, Plants, Species, Tundras, Soil organic matter
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Several environmental factors were measured in a transect across a snow accumulation area in order to indicate (1) possible controls of arctic vegetation patterns; (2) water, carbon, and nutrient budgets of different vegetation types; and (3) relationships of Eriophorum vaginatum tussock tundra to other vegetation types. The results indicate that the vegetation zones are largely associated with different levels of nitrogen and phosphorus availability rather than length of the snowfree season, water availability, and soil pH. Nitrogen uptake was highest in the forb-grass and lower deciduous shrub zones and lowest in the lichen-heath. Phosphorus uptake was highest in the lower deciduous shrub zone and lowest in the lichen-heath. On the basis of several floristic and environmental factors tussock tundra has the lowest affinities to the lower deciduous shrub zone.
Holarctic Ecology © 1982 Nordic Society Oikos