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Vascular plants as ecological indicators of metals in alpine vegetation (Karkonosze, SW Poland)
2017
Wojtuń, Bronisław | Samecka-Cymerman, Aleksandra | Żołnierz, Ludwik | Rajsz, Adam | Kempers, AlexanderJ.
Calluna vulgaris, Carex rigida, Deschampsia flexuosa, Nardus stricta and Vaccinium myrtillus are abundant in the vegetation of mountainous areas in Northern and Central Europe. Knowledge of their ability to accumulate increased amounts of metals could be useful in the evaluation of environmental pollution in the alpine tundra of high mountains. Additionally, this investigation may contribute to understanding the rate and direction of recent vegetation change in Karkonosze and similar types of environments. Our investigation revealed that Carex rigida, C. vulgaris and V. myrtillus contain excessive Mn concentrations in shoots with the highest BF for this element compared to the BFs of other elements. C. rigida, with Cu, Mn and Zn concentrations exceeding the toxicity thresholds for plants, seems to be the best metal phytoaccumulator for Nardus stricta grasslands Carici (rigidae)-Nardetum (CrN) and alpine heathlands Carici (rigidae)-Festucetum airoidis (CrFa) associations in the Karkonosze. Based on relevant BFs >1, it can be stated that the following plant available metals were transferred to shoots: Cu, Mn and Ni by C. vulgaris; Cd, Cu, Mn, Ni and Zn by C. rigida; Cd, Cu, Mn, Ni and Zn by D. flexuosa; Cu, Mn, Ni and Zn by N. stricta and Cu, Mn and Zn by V. myrtillus.
Показать больше [+] Меньше [-]Potential Temporal and Spatial Responses of Forest Communities to Climate Change: Application of Two Simulation Models for Ecological Risk Assessment
1993
Kienast, F. | Brzeziecki, B. (Swiss Federal Institute for Forests, Snow and Landscape Research, Birmensdorf (Switzerland))
Two modeling approaches were applied to evaluate the potential risks of increasing atmospheric carbon dioxide concentrations and possible climate change on the vegetation cover of the Alpine region. The first model is a stochastic forest succession simulator, the second is a static regression type model. The questions of the study were as follows: (1) Which temporal vegetation changes might occur under given carbon dioxide and climate scenarios? (2) Which region of the Alps might be most susceptible to a vegetation change?
Показать больше [+] Меньше [-]Climate Change - Potential Impacts on Subalpine Forest Ecosystem
1993
Kraeuchi, N. (Swiss Federal Institute of Technology, Zurich (Switzerland))
The ranges of the ecosystems move when the climatic pattern changes. Simulations have shown that a global warming would cause important changes of the species composition in subalpine forests. Deciduous trees would invade today's subalpine belt. Various conifers would be displaced and migrate into alpine zone. The model simulations are based on the IPCC climate scenarios.
Показать больше [+] Меньше [-][Change of vegetation at the alpine timberline]
1990
Blaschke, H. (Muenchen Univ. (Germany, F.R.). Lehrstuhl fuer Forstbotanik) | Dotzler, M. | Kohler, U. | Paul, L. | Mack, P. | Stoelting, R. | Schuett, P.