Our research project on predator-prey-relationships between lynxes, roe deer and red deer consists of the following five divisions:

I. The impact of lynxes on the population dynamics of red deer and roe deer

It is our goal to determine the number of lynxes, roe deer and red deer inside the national park, as well as their reproduction and mortality rates. Additionally, we shall investigate the causes of mortality in red deer in particular. It is based on this data that the impact of lynxes on the population dynamics of roe deer and red deer shall be derived.

II. Control factors for territorial use/activity of lynxes, roe deer and red deer

Bearing in mind a number of different factors, we shall conduct an analysis of habitats and activity ranges with the goal of determining the parameters impacting the animals’ territorial use. Among other things, we will look into factors such as the availability of food resources, snow conditions, touristic infrastructure, human settlement , and wildlife regulations.

III. Assessment of the prey spectrum of lynxes

For the assessment of this topical area, we shall analyse the bodies of animals killed by lynxes (discovered at random), series of killings, as well as lynx droppings. It is our goal to bring forth evidence on the predators’ food composition, and to determine whether they select their prey based on the type of the animal, its age, gender, or general condition.

IV. The impact of lynxes on the behaviour of their prey

We shall analyse the behaviour of lynxes, red deer and roe deer based on these parameters: activity range, time allotment, activity rhythms, and use of habitat. A comparison of earlier telemetry data (when lynxes were not yet present in the area) with current data shall help determine whether there have been changes in the behaviour of the prey. Furthermore, we shall test whether the presence of a lynx, or a recent killing, has an impact on the behaviour of the prey.

V. Interactions between roe deer, red deer and forest vegetation

This aspect requires first of all an analysis of roe and red deer droppings in order to determine their food composition. Combining the analysis of data from areas such as forest inventories, continuously observed forest divisions, and vegetation surveys, shall allow us to assess the animals’ selection of food plants, the browsing damages caused by deer in terms of geographical preference / size of the deer population, and the impact of such damage on forest development. It is also our goal to determine the Bavarian Forest National Park’s potential habitat capacity for roe and red deer, and whether large-scale disturbances such as wind throw or bark beetle invasions have an impact on the development of the deer populations.