Czy łowność i długość ciała dwóch gatunków żuków zależą od stopnia zaburzenia drzewostanu?

• Autorzy: Sklodowski J.

Warianty tytułu

EN

Do catch rate and body length of two dung beetles species depend on the severity of the stand disturbance?

• Języki publikacji: PL

Abstrakty

EN

The catch rate and body length of Anoplotrupes stercorosus and Trypocopris vernalis were studied in 2018 on permanent plots established in 2003 in Scots pine stands left for spontaneous succession in the Piska Forest (N Poland). The plots comprised treatment A – severely disturbed stands (canopy cover of 10−30%), treatment B – moderately disturbed stands (canopy cover of 40−60%) and treatment C – the least disturbed stands in which all or nearly all trees survived (canopy cover of 70−90%). Each treatment class was replicated six times. In addition, we included a Scots pine plantation established in 2006 after the soil preparation as a stand in the earliest phase of succession. The following hypotheses were set: (1) severity of stand disturbance affects the body size of both species and (2) in the surviving remnants of stands (later phase of succession development) the body length of both species is greater than in disturbed stands and in the young plantation. No differences between the catch rate of both species in different treatments was detected (tab. 1 and 2). However we found significantly longer body of T. vernalis. The increase in the difference between the length of both species in the least disturbed stands as well as in the late stages of stand development was found (fig. 1 and 2). The direct effect of the LAI and inversely proportional effect of soil temperature on the catch rate and length of the body of A. stercorosus and, to a lesser extent, T. vernalis were observed (fig. 1). The high catch rate of A. stercorosus and the length of its body was linked with the soil covered only with forest litter (which occurs in dense stands with a high LAI index) (fig. 2). The catch rate of T. vernalis was correlated with the predominant nitrophilous Deschampsia fexuosa, which suggests the preferential occurrence of T. vernalis in ‘open’ stands with a high level of solar radiation. In turn, the length of T. vernalis body correlated with a high proportion of Calluna vulgaris, which may suggest a dependence of this parameter on light reaching the soil. The above observations indicate that in the production cycle of Scots pine stands, T. vernalis prefers open stands (especially clear−cuts, young plantations), while A. stercorosus is more often met in dense stands. The catch rate of both species is not suitable for zooindication research, while the length of their body is suitable. The higher the stage of ecological successive of the pine stand, the greater the difference in the body length of these species.

Słowa kluczowe

PL

lesnictwo; lasy; stan srodowiska; bioindykatory; zukowate; Geotrupidae; zuk lesny; Anoplotrupes stercorosus; zuk wiosenny; Trypocopris vernalis; dlugosc ciala; lownosc

• Wydawca: -
• Czasopismo: Sylwan
• Rocznik: 2019
• Tom: 163
• Numer: 05
• Opis fizyczny: s.425-434,rys.,tab.,bibliogr.

Twórcy

autor

Sklodowski J.

• Katedra Ochrony Lasu, Szkoła Główna Gospodarstwa Wiejskiego w Warszawie, ul.Nowoursynowska 159, 02-776 Warszawa

Bibliografia

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Identyfikatory

DOI

10.26202/sylwan.2019026