Entomofauna szyszek i nasion świerka pospolitego Plcea ables (l.) Karst. w wybranych drzewostanach Gorczańskiego parku narodowego Część II. wpływ wysoko9ci n.p.m. i zmiennego obradzania drzewostanów świerkowych na wybrane gatunki owadów
AbstractIn 1998-2000 the qualitative and quantitative share of insects infesting the Norway spruce Picea abies (L.) Karst. cones in the Gorce National Park was studied. The aim of this study was to determine whether altitude above sea level and year of cone collection (intensity of cone crop) significantly influenced the insects. Rearing and analysis of 3,600 cones of spruce collected from trees growing at 700-1,200 m altitudes, yielded over 17,000 of insects belonging to 34 species from 5 orders. Some of the data were analy%ed statistically using Kolmogorov-Smirnov, Levene's tests, Kruskal-Wallis'a rank test and the test of multiple comparisons of mean ranks (at the significance level a = 0.05). The height above sea level sometimes had effect on numbers of the insect species (Fig. 1-3). Elevation had not a significant influence on the number of these insects. There was a significant correlation between the mean number of these insects and the intensity of cone production during three years, i.e. with weak intensity (1998), middle mast year (1999) and in heavy mast year (2000) (Fig. 4-5). The percentage of insects by orders, obtained from maturing and mature cones collected at different altitudes presents Table 1. In respect to type of protection, Cydia strobilella L. occurred in the highest intensity in the sections of partly stabili%ing protection, whereas less numerous in passive protection sections (Tab. 2).
|Other language title versions||Cone- and seed entomofauna of Norway spruce Picea abies (L.) Karst. in the selected stands of the Gorce National Park. Part II. Influence of altitude and of variable spruce stands masting on the chosen insect species|
|Journal series||Acta Agraria et Silvestria series Silvestris, ISSN 0065-0927, (B 1 pkt)|
|Publication size in sheets||0.9|
|Keywords in Polish||Picea abies, Gorce, szyszki, owady, wysokość n.p.m., obradzanie drzewostanu|
|Keywords in English||Picea abies, Gorce Mts., cones, insects, altitude, stand masting|
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