In their first phase of expanding into new areas, invasive plants often take advantage of the inability of existing herbivores and pathogenic species to exploit them. However, in the longer term local enemies may adapt to using these invasive species as a food source. This study assesses the use of mature acorns of two oak species in Europe (the native Pedunculate Oak Quercus robur and the invasive Northern Red Oak Quercus rubra) by moths Cydia fagiglandana and Cydia splendana and beetles Curculio spp. We show that acorns of invasive oak species can be equally attractive to C. splendana but only partially so to C. fagiglandana where infestation rates where significantly lower (approximately half) compared to the native oak. The infestation by Curculio beetles of Northern Red Oak was marginal, less than 1% of the rate in the native oak species. The larval final weights did not differ significantly between host species, but emergence of C. splendana and Curculio spp. took significantly longer in acorns of Northern Red Oak. It is likely that C. fagiglandana and C. splendana have increased their niche breadths by exploiting invasive oak species and avoiding competition with the Curculio weevils. Furthermore, the occurrence of Northern Red Oak could stabilize food resources during years when native oak species have poor acorn crops.

the incorporation of Lucanus cervus (L.) in Annex 2 of the EU Habitats Directive imposed on EU member countries the obligation to prepare protection plans and undertake adequate measures aimed at the preservation of this species. A necessary precondition for their implementation was connected with the identification of current localities of L. cervus. this paper presents the distribution of L. cervus localities in Poland, identified on the basis of a survey conducted in the areas administered by the State Forests. Habitat preferences for the selection of biotopes by stag beetles were evaluated in terms of forest-site types. This will facilitate effective protection of L. cervus by indicating potential biotopes for this species, particularly in areas with high abundance. The survey showed the presence of L. cervus in 176 localities distributed in 47 forest districts. Most of them were found in three main areas comprising forests in the areas of Zielona Góra, Wrocław and the Świętokrzyskie Mts. They constitute large-scale refuges. In 98% of cases the development of L. cervus was associated with oaks Quercus robur and Quercus petraea. other host plants included Fagus sylvatica and Acer pseudoplatanus. the age of trees colonised by stag beetles ranged from 70 to 248 years, 134 years on average. Lucanus cervus was most frequently found in deciduous mesic forest sites (41% of localities) and deciduous mixed mesic forest sites (24% of localities). Over 90% of recorded localities are situated in forested areas, understood to include stands, residual trees and stumps, as well as localities at forest edges and along roads in the vicinity of forests.

Streszczenie. Celem badań było poznanie składu gatunkowego motyli z rodziny Geometridae w żyjących w okolicach Słowińskiego Parku Narodowego. Regularne badania na temat miernikowcowatych prowadzono w środkowej i wschodniej części otuliny Słowińskiego Parku Narodowego na odcinku ok. 40 km w położeniu horyzontalnym w latach 2003-2008. Do odłowów wykorzystywano samołówki świetlne i odłowy do światła. Dane o gatunkach uzupełniono również o informacje zebrane w okresie 1985-2015. W sumie stwierdzono 206 gatunków Geometridae. Większość należy do często spotykanych w Polsce (Buszko, 2000). Powstała lista jest pierwszym syntetycznym opracowaniem prezentującym spektrum gatunków miernikowców Pobrzeża Słowińskiego.

Streszczenie. W latach 1998-2003 prowadzono badania nad zgrupowaniami motyli w Karkonoszach. Ich wynikiem było stworzenie wykazu motyli dziennych i nocnych. Z rodziny Tortricidae wykazano 109 gatunków motyli, co stanowi ok. 23% wszystkich znanych obecnie gatunków w Polsce. Wskaźnica modrzewianeczka (Zeiraphera griseana) może zagrażać trwałości drzewostanów świerkowych. Jej stałe, monitorowane ognisko gradacyjne zlokalizowane jest na Hali Szrenickiej. Clepsis rogana, typowo górski gatunek zwójki, występuje w Karkonoszach na 950-1300 m n.p.m. W badaniach wykazano siedem gatunków nowych w województwie dolnośląskim oraz 11 gatunków rzadkich w faunie krajowej.Słowa kluczowe: Karkonosze, zwójkowate, ochrona lasu, Karkonoski Park Narodowy WSTĘP Badania nad zwójkowatymi w Karkonoszach były prowadzone równocześnie z badaniami nad innymi rodzinami motyli w latach 1999-2003. Z tego okresu opublikowano kilka prac naukowych poświęconych wybranym grupom i rodzinom motyli