Environmental controls over carbon, nitrogen and phosphorus fractions in Eriophorum vaginatum in Alaskan tussock tundra

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TitleEnvironmental controls over carbon, nitrogen and phosphorus fractions in Eriophorum vaginatum in Alaskan tussock tundra
Publication TypeJournal Article
Year of Publication1986
AuthorsF Stuart Chapin III, Shaver, GR, Kedrowski, RA
JournalJournal of Ecology
Volume74
Issue1
Pagination167-195
Accession NumberARC310
Keywordsenvironmental factors
Abstract

In Alaskan tussock tundra the seasonal pattern of most carbon-, nitrogen- and phosphorus-contraining chemical fractions was followed for 3 years in E. vaginatum and the response of these fractions to manipulation of light intensity, air temperature, nutrient availability and repeated clipping was examined. In control plants, total-carbohydrate concentration was high (30-35% in stems) and fluctuated less than 10% throughout the growing season, indicating that current photosynthate was adequate to meet concurrent growth demands. Normal yearly variations in growing conditions caused greater change in carbohydrate concentrations than did any manipulation (including 50% reduction in irradiance) except repeated clipping. Carbohydrate reserves returned to control levels following 1 year of recovery from clipping.

DOI10.2307/2260357
Short TitleEnvironmental controls over carbon, nitrogen and phosphorus fractions in Eriophorum vaginatum in Alaskan tussock tundra