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Does elevated atmospheric carbon dioxide affect internal nitrogen allocation in the temperate trees Alnus glutinosa and Pinus sylvestris? by Victoria M. Temperton; Peter Millard; Paul G. Jarvis is a Environmental Science article available to read on EtoBox.

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## Abstract Nitrogen‐fixing plant species growing in elevated atmospheric carbon dioxide concentration ([CO~2~]) should be able to maintain a high nutrient supply and thus grow better than other species. This could in turn engender changes in internal storage of nitrogen (N) and remobilisation during periods of growth. In order to investigate this one‐year‐old‐seedlings of __Alnus glutinosa__ (L.) Gaertn and __Pinus sylvestris__ (L.) were exposed to ambient [CO~2~] (350 μmol mol^−1^) and elevated [CO~2~] (700 μmol mol^−1^) in open top chambers (OTCs). This constituted a main comparison between a nitrogen‐fixing tree and a nonfixer, but also between an evergreen and a deciduous species. The trees were supplied with a full nutrient solution and in July 1994, the trees were given a pulse of ^15^N‐labelled fertiliser. The allocation of labelled N to different tissues (root, leaves, shoots) was followed from September 1994 to June 1995. While N allocation in __P. sylvestris__ (Scots pine) showed no response to elevated [CO~2~], __A. glutinosa__ (common alder) responded in several ways. During the main nutrient uptake period of June–August, trees grown in elevated [CO~2~] had a higher pe

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Author

Victoria M. Temperton; Peter Millard; Paul G. Jarvis

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; Research Square (ISSN 1354-1013)

Published

2003

Language

EN

Field

Environmental Science (Physical Sciences)