First report about occurence of whiteflies (Aleyrodidae, Hemiptera) in the area of the Bieszczady National Park

The paper presents the first information about the distribution and host plants of whiteflies in the Bieszczady National Park. Six species were recorded: Aleurochiton pseudoplatani Visn., Aleyrodes asari (Schrank), A. lo...

Krajobraz widziany z bieszczadzkich dróg – studium i koncepcja ochrony walorów widokowych

Dynamika dzwonka piłkowanego Campanula serrata i innych gatunków zielnych na powierzchniach doświadczalnych w obszarze dolin Bieszczadzkiego Parku Narodowego

Effect of land use in the past (19th and the end of 20th c.) on the grassland vegetation of the Radziejowa Range (Beskid Sądecki Mts.)

Present state of meadow vegetation in different ways used in the past in the Radziejowa Range is given. False oat-grass meadows Arrhenatheretum elatioris occurred generally on former arable grounds, while common bent mea...

New and rare species of beetles Coleoptera from the Bieszczady National Park and Bieszczady Mts. collected in the years 2009–2011 and the revision of the investigations from the last ten years

Amongst the most interesting beetle species which were found during the last two years of investigations can be enumerated Denticollis borealis which was found under the bark of an old decaying alder in the centre of Ust...