Tree diversity

Primary tabs

A measure for the amount of tree species mixed on a given site or stand. Can be measured in various forms (e.g. Shannon Index, tree species richness).

Tree diversity: an ecological weapon against pest insects

(See below for French, English and German versions, and 

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.
 

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.

Earthworms - engineers with important role for forest ecosystems

Earthworms play a major role in the conversion of organic matter into humus, thus improving soil fertility in many soils. In addition to dead organic matter, the earthworm also ingests any other small soil particles which make minerals and plant nutrients accessible for plants to use. The earthworm's burrowing creates a multitude of channels through the soil and is of great value in maintaining the soil structure, enabling processes of aeration and drainage.

Is understorey vegetation diversity associated with tree species diversity in European forests?

Despite its relatively low biomass compared to the forest overstorey, the diversity and functional importance of the shrub and herb layer is high. For instance, it is a potential nectar source for pollinators, provides habitat for small mammals, affects tree regeneration, invasion resistance and influences decomposition and nutrient cycling. Therefore it is important to know if the understorey vegetation diversity is associated with the tree species diversity in European 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.

Subscribe to RSS - Tree diversity

About FunDivEurope

Learn more about the FunDivEurope project:

About this Platform

Get in touch with the FunDiVEurope Knowledge Transfer Platform and read the latest news from the site administrators: