Research Article

Declining Bark Beetle Densities (Ips typographus, Coleoptera: Scolytinae) from Infested Norway Spruce Stands and Possible Implications for Management

Figure 2

Trap catches of Ips typographus in the city (a), in the open land (b), and in the broadleaf stand (c), starting from infested spruce. The calculated beetle density 500 meters from the infestation spot is marked.
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(a)
321084.fig.002b
(b)
321084.fig.002c
(c)