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Wyszukujesz frazę "Holusa, J" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Health condition of Norway spruce Picea abies (L.) Karst. stands in the Beskid Mts
Autorzy:
Holusa, J
Powiązania:
https://bibliotekanauki.pl/articles/41422.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Norway spruce
Picea abies
spruce stand
Beskids Mountains
Moravo-Silesian Beskids Mountains
health condition
tree condition
rot infestation
insect
nutrient supply
climatic agent
mechanical destruction
snow
wind
air pollution
physiological condition
tree
Opis:
The health condition of spruce stands in the Moravian-Silesian Beskids is affected by several predisposition factors, the most important of which is the allochthonous character of spruce grown on improper sites. When exposed to a low supply of nutrients and intensive mechanical damage mainly by game, the trees are susceptible to rot infestations, climatic agents and mechanical destruction by snow, hard rime and wind. At present, air pollution does not show any significant impact on the spruce stands; it rather acts as a less important predisposition factor on mountain peaks. The physiological condition of trees is not impaired to the extent which would facilitate infestation with phytophagous or cambioxylophagous insects.
Źródło:
Dendrobiology; 2004, 51 Supplement
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pheromone trapping of the double-spined bark beetle Ips duplicatus (Coleoptera: Curculionidae, Scolytinae): seasonal variation in abundance
Autorzy:
Holusa, J.
Grodzki, W.
Lukasova, K.
Lubojacky, J.
Powiązania:
https://bibliotekanauki.pl/articles/38545.pdf
Data publikacji:
2013
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
pheromone lure
trapping
double-spined bark beetle
Ips duplicatus
Coleoptera
Curculionidae
Scolytinae
seasonal variation
abundance
flight activity
generation
Opis:
Ips duplicatus adults were sampled with pheromone-baited black window-slot traps (Theysohn) in 70- to 100-yearold Norway spruce (Picea abies) stands between 280 and 650 m a.s.l. in the eastern Czech Republic and southern Poland during 2000– 2010. Sets of 5–12 traps were placed about 20 m from the edge of the infested forest. Each trap was baited with a standard synthetic pheromone lure (ID Ecolure), and was setup 1.5–2.0 m above the ground. The objectives were to determine the relationship between the numbers of adults trapped in the overwintered generation and those in the offspring generation. According to data from 135 traps, the numbers of overwintered beetles captured in spring (April–June) were significantly higher than the numbers captured in summer (July–August), but the numbers of offspring beetles captured in summer were significantly correlated with the numbers overwintered beetles captured in spring. The spring captures can be used to estimate the threat caused by I. duplicatus during the whole vegetation season. The traps installed in summer should be used to determine the peaks in the bark beetle flight activity, thus enabling early identification of trees infested by I. duplicatus, especially inside stands.
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 1
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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