Reduction of the numbers of Operophthera brumata (L.) over the outbreak and post-outbreak period in the "Grabowy" reserve of the Kampinos National Park

Kaczmarek, Maria; Wasilewski, Aleksander

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Reduction of the numbers of Operophthera brumata (L.) over the outbreak and post-outbreak period in the "Grabowy" reserve of the Kampinos National Park Kaczmarek, MariaWasilewski, Aleksander

Struktura obiektu

Reduction of the numbers of Operophthera brumata (L.) over the outbreak and post-outbreak period in the "Grabowy" reserve of the Kampinos National Park

Reduction of the numbers of Operophthera brumata

Kaczmarek, Maria ; Wasilewski, Aleksander

Polska Akademia Nauk. Instytut Ekologii

Polish Scientific Publishers

Warszawa

1978

Strony 141-150 : ilustracje ; 24 cm ; Bibliografia na stronach 149-150 ; Streszczenie w języku polskim

Czasopismo/Artykuł

forest (Pino-Quercetum) ; Operophthera brumata ; phytophagous pests ; outbreak ; oak defoliation ; pest reduction ; reduction factors

Reduction of Operophthera brumata (L.) in larval and pupal stages over the outbreak and post-outbreak period has been estimated. Reduction of larvae in tree crowns is quite considerable and is much higher after outbreak than in the year of an outbreak. Mortality of pupae due to parasites increased in successive years following the outbreak, whereas mortality caused by non-specialized predators – decreased As the outbreak is coming to the end the reduction of the larval stage in tree crowns increased, whereas that of the pupal stage in soil - decreased.

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