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Fig. 5 | Annals of Forest Science

Fig. 5

From: Oviposition preference of the forest cockchafer (Melolontha hippocastani Fabr. 1801) at the stand scale depends on oak proportion, canopy openness and ground accessibility

Fig. 5

Multivariate regression trees obtained by the classification and regression trees (CART) method for our data set for the prediction of mean egg-cluster density (“Nb egg-laying”). The grey scale in the lower boxes (terminal leaf nodes) shows differences in the average Melolontha hippocastani laying level from the lowest (light gray = 1.9 egg-clusters) to the highest (dark gray = 16 egg-clusters). “n =” indicates the number of study plots, and percentages indicate plot proportion

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Annals of Forest Science

ISSN: 1297-966X