Fine root turnover in forest ecosystems in relation to quantity and form of nitrogen availability: a comparison of two methods

Two methods of estimating fine root production and turnover are compared for 13 forest ecosystems exhibiting a wide range in form (NH vs. NO ) and quantity of available nitrogen. The two methods are by comparison of seasonal maxima and minima in biomess and by nitrogen budgeting. Both methods give s...

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Bibliographic Details
Published inOecologia Vol. 66; no. 3; pp. 317 - 321
Main Authors Aber, J.D, Melillo, J.M, Nadelhoffer, K.J, McClaugherty, C.A, Pastor, J
Format Journal Article
LanguageEnglish
Published Germany 01.06.1985
Subjects
biomass determination
ecosystems
forests
methodology
nutrient availability
root analysis
seasonal variation
Massachusetts
Wisconsin
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Summary:Two methods of estimating fine root production and turnover are compared for 13 forest ecosystems exhibiting a wide range in form (NH vs. NO ) and quantity of available nitrogen. The two methods are by comparison of seasonal maxima and minima in biomess and by nitrogen budgeting. Both methods give similar results for stands with low rates of nitrification. The budgeting method predicts higher fine root turnover and productivity than the max-min method for systems with significant rates of nitrification.
ISSN:0029-8549
1432-1939
DOI:10.1007/bf00378292