Abstract
The ability of different alpine species to influence soil nutrient concentrations was quantified by growing monocultures of 17 species on a homogenized acid alpine soil mixture. The experiment was carried out at 2750 m a.s.l. in the Teberda Reserve, Northwest Caucasus. Soil nuturient contents (NH4, NO3, P, Ca, Mg, and K) and pH were analyzed after 6 years. The same soil mixture but without plants was used as a control. The plant species had significant effects on all soil properties. Different species groups tended to decrease different nutrients to different extents, e.g.Matricaria caucasica had the lowest level for NO3 andFestuca ovina for P. Many species increased the cation content (Ca, Mg, K) in the soil in comparison with the control. Prevention of cation leaching seems to be the main mechanism of these increases, because initial cation contents were higher than the final. All species, exceptSibbaldia procumbens, increased soil pH in comparison with the final control. Significant differences among taxonomic groups (families) were found for exchangeable Ca, Mg, and pH.Fabaceae decreased cation contents (Ca, Mg), but tended to increase nitrogen (NH4, NO3).Cyperaceae (Carex spp.) tended to decrease ammonium content, and bothAsteraceae andCyperaceae tended to decrease nitrate concentrations. The phosphorus content tended to be reduced by grasses. There was no strong correspondence between properties of native soils of 4 alpine communities and nutrient concentrations for species preferring those communities.
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Onipchenko, V.G., Makarov, M.I. & van der Maarel, E. Influence of alpine plants on soil nutrient concentrations in a monoculture experiment. Folia Geobot 36, 225–241 (2001). https://doi.org/10.1007/BF02803178
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DOI: https://doi.org/10.1007/BF02803178