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Establishment of Salix alaxensis on a Gravel Pad in Arctic Alaska
Susan Cargill Bishop and F. Stuart Chapin, III
Journal of Applied Ecology
Vol. 26, No. 2 (Aug., 1989), pp. 575-583
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2404083
Page Count: 9
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(1) The effects of water and nutrient availability on germination, survival and growth of Salix alaxensis on an abandoned gravel pad (construction site) in arctic Alaska were examined. (2) Germination of S. alaxensis was strongly limited by moisture availability. Watering or surface addition of stones in the field enhanced germination. The addition of fertilizer in pots reduced germination. Seeds failed to germinate at water potentials below -0.2 MPa. (3) The availability of water and nutrients in the gravel pad soil did not limit the survival of established seedlings of S. alaxensis. (4) The addition of NPK fertilizer increased growth of transplanted seedlings to the end of the second growing season. (5) Transplanting seedlings of S. alaxensis onto abandoned gravel pads would be a practical method of site restoration when a specific need warranted the expense.
Journal of Applied Ecology © 1989 British Ecological Society