Ober- und unterirdische Biomasse, saisonale Produktivität, Bodenaktivität, Nährstoff- und Kohlenstoffpools in Zäunungen
Below- and aboveground productivity, seasonal productivity, mineral soil decomposition rates, carbon and nutrient-stocks in exclosure experiments
Project Number: CH-2404
The exclosures in the Swiss National Park offer the oportunity to study the impact of grazing pressure on productivity (below- and aboveground), soil activity, carbon and nutrient cycling experimentally. We will carry out clipping experiments to determine aboveground biomass, and the amount of biomass consumed by herbivores. We will take soil samples to estimate belowground biomass, carbon and nutient stocks and will measure soil temperature, soil humidity as well as mineral soil decomposition rates.
The following hypotheses will be tested:
• Seasonal biomass production is higher in exclosures than outside.
• Root development is reduced by grazing, i.e. more belowground biomass is found in the exclosures.
• Litter layer and standing crop are better developed in the exclosures and thus soil temperature is lower and soil activity reduced in exlosures
• C-stocks are higher in exclosures than outside
• N-cycling is accelerated by grazing, i.e. more N is available outside the exclosures.
Langenegger A 2004: The influence of ungulates on above- and belowground biomass, seasonal production and decomposition in an exclosure experiment in the Swiss National Park. ETH, Department UMNW. 15 pp.pdf Diplomarbeit
Last update: 7/18/17
Source of data: ProClim- Research InfoSystem (1993-2020)
Update the data of project: CH-2404