Lynx

In figures 6.17 to 6.23 TT-$\delta$ plots are shown for four different lynx (Lynx lynx) using the same color scheme for distance coding (maximal distance of 70km is coded as red). The first lynx expressed a relatively simple movement (figure 6.17). It basically moved from one location (small blue square at the bottom left) to a different one (large blue square at the top right). The time in between these two phases shows an interesting movement indicated by the x-shape occurring before the second large blue square (figure 6.18). The animal was travelling, then turned around and walked back on the same path and then stopped at the location it stayed for the rest of the observation period. The lynx had passed that location once before. This can be recognized by the horizontal blue band underneath the large blue square, as it was explained in the interpretation catalogue (table 5.7).

Figure 6.17: TT-$\delta$ plot of lynx 1 for a three months period in spring. Short distances are indicated in blue, medium ones in green and large distances have a yellow to red color. The same color scheme is used in the following figures.

Figure 6.18: Detail of the TT-$\delta$ plot for lynx 1. The color scheme was rescaled to account for the maximum distance within this part of the observation period.

The second lynx shows a more complicated movement (figure 6.19). It seems to be exchanging between two places at a high rate, sometimes staying in these areas for some time. It often uses similar travel paths to change between the areas, which is indicated by the many blue angular lines all over the TT-$\delta$ plot. A special pattern found in different variations is shown in detail in figure 6.20. It is an x-shape surrounded by a circle. It takes some time to understand the underlying movement. It shows that the animal was walking along a single path forward, then walked in the opposite direction, back, and then repeated this movement once more on the same path. It is basically the same movement as the one illustrated in figure 5.12a. The difference is that the animal used different speeds at different times. The first and the last time the animal used the path it walked relatively fast. In between the lynx was walking at a lower pace.

Figure 6.19: TT-$\delta$ plot of lynx 2 for a one year period.

Figure 6.20: Detail of the TT-$\delta$ plot for lynx 2. The color scheme was rescaled to account for the maximum distance within this part of the observation period.

In the third lynx (figure 6.21) three larger blocks can be detected. In the first part (lower left) the animal showed a similar movement as the previous animal. It is changing between two locations at relatively constant intervals. After a longer stay in one of the two areas it leaves for another region. Now the same movement pattern can be seen as in the first lynx. After walking for some time, it goes back on the same path to a place it encountered before and then stays for a longer time in that area. This behavior is repeated again in the last third of the observation period.

Figure 6.21: TT-$\delta$ plot of lynx 3 for a one year period.

The last TT-$\delta$ plot with data of a lynx is shown in figure 6.22. This animal also changes between areas twice. The TT-$\delta$ plot shows again the pattern from figure 6.20, but the image is more blurred, indicating that the animal does not adhere to the pathways as strongly as the other animals did.

Figure 6.22: TT-$\delta$ plot of lynx 4 for a one year period.

Figure 6.23: Detail of the TT-$\delta$ plot for lynx 4. The color scheme was rescaled to account for the maximum distance within this part of the observation period.