Page 54 - A bird’s-eye view of recreation - Rogier Pouwels

A bird's-eye view of recreation
a
Zandvoortselaan b
Oase Panneland
De Zilk Langervelderslag
Figure 5a-b. Predicted zones disturbed by visitors in the scenario ‘Present situation’ (a) and ‘Recreation zoning plan’ (b). The disturbance zones along the foot paths are shown (light red). Entrances are indicated by black arrows. The populations are divided in a disturbed part (dark red) and an undisturbed part (dark green).
In the current situation, 35% of the habitat is disturbed while in the zoning scenario 28% is disturbed (Table 4). The simulation results show that the impact of zoning is most pronounced in protecting. In the current situation the disturbed area is twice as large as in the ‘zoning scenario (Table 4). This results in a less stable population with an average of 14 breeding pairs. Because population 4 is the largest population in the metapopulation, a reduction in this population is expected to have the largest effect on the metapopulation (Vos et al. 2001, Verboom et al. 2001, Opdam et al. 2003).
In the zoning scenario, the number of breeding pairs were not significantly different from the scenario without recreation. Also the nature indicators (percentage of occupied patches and total numbers of Skylark) of the zoning scenario are the same as in the scenario without recreation (Table 4). The current situation has lower values of number of breeding pairs in the total population. Extinction frequency did not differ significantly between the three scenarios. All scenarios result in a viable metapopulation.
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