Access

You are not currently logged in.

Access JSTOR through your library or other institution:

login

Log in through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Differences in Growth and Nutrient use Among Arctic Plant Growth Forms

F. S. Chapin, III and G. R. Shaver
Functional Ecology
Vol. 3, No. 1 (1989), pp. 73-80
DOI: 10.2307/2389677
Stable URL: http://www.jstor.org/stable/2389677
Page Count: 8
  • Read Online (Free)
  • Download ($18.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Differences in Growth and Nutrient use Among Arctic Plant Growth Forms
Preview not available

Abstract

Deciduous species (graminoids, forbs and deciduous shrubs) completed accumulation of biomass, nitrogen (N) and phosphorus (P) in new leaves and current-year's twigs by midsummer in arctic Alaska, whereas these processes continued throughout the growing season in the same tissue of evergreen shrubs. N- and P-use-efficiency increased from deciduous species to evergreen shrubs to lichens and mosses. Fertilization with N-plus-P had no effect on N-use-efficiency in deciduous leaves but caused a decline in N-use-efficiency in evergreen leaves, mosses and lichens. P-use-efficiency declined with nutrient addition in leaves of all growth forms. Approximately half of the maximum pools of leaf N and P were withdrawn from leaves prior to autumn senescence, but this resorption was unaffected by nutrient addition treatment or by growth form.

Page Thumbnails

  • Thumbnail: Page 
73
    73
  • Thumbnail: Page 
74
    74
  • Thumbnail: Page 
75
    75
  • Thumbnail: Page 
76
    76
  • Thumbnail: Page 
77
    77
  • Thumbnail: Page 
78
    78
  • Thumbnail: Page 
79
    79
  • Thumbnail: Page 
80
    80