Invertebrate abundance in different forest habitats as animal food available to capercaillie Tetrao urogallus chicks
1988; Taylor & Francis; Volume: 3; Issue: 1-4 Linguagem: Inglês
10.1080/02827588809382537
ISSN1651-1891
Autores Tópico(s)Avian ecology and behavior
ResumoAbstract Invertebrate abundance was estimated in 1981 and 1982 by sweep‐netting at twelve forest vegetation types in Vegårshei, Southern Norway. Invertebrates are expected to be a major determinant of habitat quality to gallinaceous birds, since animal food is considered essential to young chicks. The twelve fixed stations were chosen to illustrate poor and rich habitats and a gradient from bog to forest habitat. Rich vegetation types also had the highest abundance of invertebrates mainly due to moist and heavy soils. A comparison between a clear‐cutting and a similar vegetation type not logged, showed strong reduction in invertebrate availability after cutting. The influence of this alteration on availability of the capercaillie Tetrao urogallus chicks’ food is discussed. Key words: invertebrate abundancehabitat qualityclear‐cuttingcapercailliechicks’ dietTetrao urogallus
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