Species diversity

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Biodiversity at the species level, often combining aspects of species richness, their relative abundance, and their dissimilarity (MA, 2005). Species diversity is a function of the number of species and the evenness in the abundance of the component species. (Kindt et al. 2006)

The FunDivEUROPE project

Biodiversity research of the last 15 years could demonstrate that multiple functions and services of an ecosystem are influenced by the number of species within this system. Most of these findings, however, are based on research within grassland systems. So science has to make the next big step and address those ecosystems that control a good portion of the carbon, nutrient and water balances of the earth: the forests.
 

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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