Stable nitrogen isotopes (δ15N) in thalli of the lichen Hypogymnia physodes along a altitudinal gradient in the Khangai Plateau, Mongolia

Stable nitrogen isotopes (δ15N) in thalli of the lichen Hypogymnia physodes along a altitudinal... Stable nitrogen isotopes (δ15N) have been determined in the organic matter (OM) of thalli of the lichen Hypogymnia physodes (L.) Nyl. collected at 15 levels along an altitudinal gradient (1250–2928 m a.s.l.) in forest and alpine meadow communities of the Khangai Plateau, Mongolia. The results show that, in the study region as a whole, no correlation between the δ15N content and elevation is observed. However, the lichen OM within the mountain forest belt is depleted of the heavy 15N isotope as elevation increases (from 1250 to 2400 m a.s.l.), whereas in the alpine meadow belt (2500–2928 m a.s.l) it is enriched with this isotope. In addition, δ15N values in OM show an inverse dependence on the relative content of total nitrogen in the thalli. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Ecology Springer Journals

Stable nitrogen isotopes (δ15N) in thalli of the lichen Hypogymnia physodes along a altitudinal gradient in the Khangai Plateau, Mongolia

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Publisher
Springer Journals
Copyright
Copyright © 2012 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Ecology; Environment, general
ISSN
1067-4136
eISSN
1608-3334
D.O.I.
10.1134/S1067413612030058
Publisher site
See Article on Publisher Site

Abstract

Stable nitrogen isotopes (δ15N) have been determined in the organic matter (OM) of thalli of the lichen Hypogymnia physodes (L.) Nyl. collected at 15 levels along an altitudinal gradient (1250–2928 m a.s.l.) in forest and alpine meadow communities of the Khangai Plateau, Mongolia. The results show that, in the study region as a whole, no correlation between the δ15N content and elevation is observed. However, the lichen OM within the mountain forest belt is depleted of the heavy 15N isotope as elevation increases (from 1250 to 2400 m a.s.l.), whereas in the alpine meadow belt (2500–2928 m a.s.l) it is enriched with this isotope. In addition, δ15N values in OM show an inverse dependence on the relative content of total nitrogen in the thalli.

Journal

Russian Journal of EcologySpringer Journals

Published: May 15, 2012

References

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