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Bark beetles in the Tatra Mountains. International research 1998-2005 - an overview

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Grodzki W., Turcani M., Jakus R., Hlasny T., Rasi R., McManus M. L.

Folia Forestalia Polonica. Series A . Forestry

2010

tom 52

nr 2

This paper is a review of fundamental information on bark beetles and their interactions with several predisposing factors (air pollution, drought/temperature interactions, windthrows, management activities) that are thought to contribute to the outbreaks in the High Tatra Mountains. The findings of many research projects indicate that the impact of air pollution on bark beetle populations is indirect and complex and that the disturbances in the physiology and natural resistance of trees may be of crucial importance to bark beetle population dynamics. An active forest protection approach is needed to be applied to the secondary Norway spruce forests affected in the past by human activity. Bark beetle populations in natural and near-natural forests (mainly in the upper montane zone) are regulated by natural mechanisms; bark beetles are therefore a natural factor contributing to forest development, including the transition of future generations of spruce.

Ultrastructure characteristic of a Nosema sp. [Microsporidia] from a Bulgarian population of Euproctis chrysorrhoea L.[Lepidoptera]

100%

Pilarska D., Linde A., Solter L. F., Takov D., McManus M. L., Goertz D.

Acta Parasitologica

2002

tom 47

nr 1

The abundance of birds and their tick parasites were estimated in a residential avian community located in the Mazurian Lake region (NE Poland). A total of 1624 passerine birds (representing 45 species) were captured, of which 25% were infested with at least one tick. All the ticks belonged to the species Ixodes ricinus. The highest tick infestation prevalence (>50%) were recorded for dunnock (Prunella modularis), tree pipit (Anthus trivialis), hawfinch (Coccothraustes coccothraustes) and blackbird (Turdus merula). Changes in tick infestation prevalence of passerine birds are seasonal. June and September were the two months in which tick infestation rates were the highest. The percentage of birds that were tick carriers was significantly greater in mixed coniferous forest than in alder swamp forest (respectively 32% and 20% of birds were infested with ticks).

Ograniczanie wyników

1 Acta Parasitologica

1 Folia Forestalia Polonica. Series A . Forestry

2 McManus M. L.

1 Goertz D.

1 Grodzki W.

1 Hlasny T.

1 Jakus R.

1 Linde A.

1 Pilarska D.

1 Rasi R.

1 Solter L. F.

1 Takov D.

1 Turcani M.

1 2010

1 2002

Wyniki wyszukiwania

Bark beetles in the Tatra Mountains. International research 1998-2005 - an overview

Ultrastructure characteristic of a Nosema sp. [Microsporidia] from a Bulgarian population of Euproctis chrysorrhoea L.[Lepidoptera]