Plant Nutrient Content Does Not Simply Increase with Elevation under the Extreme Environmental Conditions of Ladakh, NW Himalaya

0381230 - BÚ 2013 RIV US eng J - Článek v odborném periodiku
Macek, Petr - Klimeš, Leoš - Adamec, Lubomír - Doležal, Jiří - Chlumská, Zuzana - de Bello, Francesco - Dvorský, Miroslav - Řeháková, Klára
Plant Nutrient Content Does Not Simply Increase with Elevation under the Extreme Environmental Conditions of Ladakh, NW Himalaya.
Arctic Antarctic and Alpine Research. Roč. 44, č. 1 (2012), s. 62-66. ISSN 1523-0430. E-ISSN 1938-4246
Grant CEP: GA AV ČR IAA600050802
Výzkumný záměr: CEZ:AV0Z60050516
Institucionální podpora: RVO:67985939
Klíčová slova: altutudinal variation * alpine vegetation * mineral nutrition
Kód oboru RIV: EH - Ekologie - společenstva
Impakt faktor: 1.429, rok: 2012

Low temperature is considered the main limiting factor for plant growth and nutrient supply at high elevations. It has been repeatedly reported that an increase in foliar nutrient contents occurs with elevation which is interpreted as the plants’ inability to use the absorbed resources for growth. However, although large data sets from various mountainous regions are available, data from elevations exceeding 5000 m elevation are rare, leaving uncertainties on the relevance of these patterns under extreme alpine conditions. To fill this gap, we examined foliar macronutrients (N, P, K, Ca, Mg) content in Poa attenuata and Waldheimia tridactylites along an elevation gradient of 1600 m in Ladakh, northwestern Himalaya. Species showed rather similar response: N, Ca, and Mg concentration decreased with elevation. However, P concentration decreased with elevation in Poa but slightly increased in Waldheimia; K concentration was related to elevation in Poa only (positively).
Trvalý link: http://hdl.handle.net/11104/0211749