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The Potential Effects of Nitrogen Deposition on Fine-root Production in Forest Ecosystems by KNUTE J. NADELHOFFER is a Agricultural and Biological Sciences article available to read on EtoBox.

What is The Potential Effects of Nitrogen Deposition on Fine-root Production in Forest Ecosystems about?

Temperate forests are recipients of anthropogenic nitrogen (N) deposition. Because growth in these ecosystems is often limited by N availability, elevated N inputs from the atmosphere can influence above‐ and belowground production in forests. Although fine‐root production is the largest component of belowground production in forests, it is unclear whether or how increases in Navailability to forest trees accompanying increased N deposition might influence fine‐root growth. Uncertainties as to how fine‐root dynamics (i.e. production and turnover) vary in relation to soil N availability contribute to this problem. Although fine‐root biomass typically decreases along soil N availability gradients in forests, it is unclear whether fine‐root production and turnover also decrease along these gradients. Here, four possible relationships between fine‐root turnover, fine‐root production, and forest soil N availability are evaluated to develop a general hypothesis about changes in rooting dynamics that might accompany increases in N deposition. The four possible relationships are as follows. (1) Fine‐root turnover rates do not systematically change with N availability in forest soils. If th

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Author

KNUTE J. NADELHOFFER

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Cambridge University Press (CUP); Wiley (ISSN 0028-646X)

Published

2000

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)