NDLI: Gradations of Gypsy Moth - Lymantria dispar L. (Lep., Lymantriidae) in Croatia

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Gradations of Gypsy Moth - Lymantria dispar L. (Lep., Lymantriidae) in Croatia

Content Provider	Semantic Scholar
Author	Pernek, Milan Pilaš, Ivan
Copyright Year	2005
Abstract	U radu se obrađuje defolijacija gusjenica gubara- Lymantria dispar L. (Lep., Lymantriidae) kao jednog od nepovoljnih biotskih cimbenika u hrastovim sumama u Hrvatskoj. Ovaj stetnik je dominirao do 60-tih godina proslog stoljeca te su njihove populacije u kontinentalnom dijelu Hrvatske u stalnom opadanju sa povremenim usponima. Jace gradacije zabilježene su 1948-1950, 1962-1966, 1970-1975, 1982-1984 te 1992-1994 godine. Metodom brojanja jajnih legala na svakom stablu duž transekta položenog približno dijagonalno kroz odjel, utvrđuje se zaraze gubara te se u Dijagnozno-prognoznoj službi izrađuje prognoza. Iz broja jajnih legala i broja stabala izracunavaju se postotni intenziteti napada. Ti intenziti su poredani u 5 klasa: 50% (klasa 5). Primjenom softverskog paketa Statsoft Statisticar ; 5.5. pomocu Fast Furier analize izracunat je periodizam, a kliznom sredinom ("Moving Average") trend pojedinih klasa. Rezultati pokazuju da se u 2005. godini može ocekivati gradacija gubara, koja bi trebala biti slabijeg intenziteta nego ona prije 10. godina. Kljucne rijeci: gubar, Lymantria dispar, populacija, hrast lužnjak, Quercus robur, Fast Furier metoda, klizna sredina.
Starting Page	263
Ending Page	270
Page Count	8
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.sumari.hr/sumlist/pdf/200502630.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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