Forest Biodiversity

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Timber quality vs. biodiversity - a contradiction?

Timber quality describes all the wood characteristics and properties that affect the value recovery chain and the service-ability of end products. In the context of timber production the quality of timber is a major driver for the price of the final product and the income of forest owners. The higher the quality of timber, the easier it is to achieve a ‘good’ price. For construction purposes the attributes dimension, stiffness and strength or dimension stability are most important. Wood properties determinate the quality of timber as well.

Effects of biodiversity on the transmission of foliar fungal pathogens in the German tree diversity experiment BIOTREE

Current theory on transmission rates of plant pathogens predicts a strong influence of host diversity on the degree of infection. We tested this prediction for foliar fungal pathogens on forest tree species, making use of the BIOTREE tree diversity experiment in Germany. We hypothesized that fungal species diversity was positively and fungal pathogen load negatively related to tree species diversity. We conducted analyses at three hierarchical levels, at the plot level, the level of single tree species, and the level of individual fungus species.

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