Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests
The article can also be located on the Ornis Fennica webpage: http://www.ornisfennica.org/index.htm Egg predation is an important determinant of breeding success among boreal forest grouse, but the relative roles ofmammalian and avian predators are poorly known. During spring/early summer of 2010, p...
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Suomen lintutieteellinen yhdistys
2012
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fthsinnlandet:oai:brage.inn.no:11250/134552 2024-03-03T08:47:17+00:00 Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests Wegge, Per Ingul, Halvor Pollen, Vebjørn Oppegaard Halvorsrud, Emil Sivkov, Andrey V. Hjeljord 2012 application/pdf http://hdl.handle.net/11250/134552 eng eng Suomen lintutieteellinen yhdistys Wegge, P., Ingul, H., Pollen, V. O., Halvorsrud, E., Sivkov, A. V., & Hjeljord, O. (2012). Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests. Ornis Fennica, 89, 145-156. http://hdl.handle.net/11250/134552 145-156 89 Ornis Fennica egg predation grouse VDP::Mathematics and natural science: 400::Zoology and botany: 480 Journal article Peer reviewed 2012 fthsinnlandet 2024-02-02T12:42:17Z The article can also be located on the Ornis Fennica webpage: http://www.ornisfennica.org/index.htm Egg predation is an important determinant of breeding success among boreal forest grouse, but the relative roles ofmammalian and avian predators are poorly known. During spring/early summer of 2010, predation on artificial nests was studied by placing nests on the ground and on 1.5-m tall poles at two forested areas. One study site was highly fragmented due to intensive forestry (Varaldskogen, Norway) and the other site was a pristine, natural forest in north-western Russia (Pinega Forest Reserve). The nests on poles were subject to predation by birds and those on the ground by both mammals and birds. Total predationwas significantly higher inVaraldskogen than in Pinega. Ground nests suffered ca. 2.5 times higher losses than nests on poles. In Pinega, predation did not differ between the two nest types. The difference between the two areas was probably due to different predator guilds:mammalian generalist predators, such as theRed Fox (Vulpes vulpes) and Badger (Meles meles), were common in Varaldskogen but scarce or absent in Pinega. Canopy cover explained most of the variation in predation rate in Varaldskogen, but no significant relationship with canopy or nest concealment was detected in Pinega. Predation on pole nests varied across habitat types in a similarmanner at the two areas, but predation on ground nests did not. As Raven (Corvus corax) and Hooded Crow (Corvus corone cornix)were rare in both areas, these findings suggest similar searching and predatory behaviour of the two main (smaller) corvids, the Eurasian Jay (Garrulus glandarius) in Varaldskogen and the Siberian Jay (Perisoreus infaustus) in Pinega. Although the study design allowed a comparison between avian andmammalian nest predators, the lack of a clearer relationship between predation and certain variables suggests that nest predation is a complex process involving components of predator behaviour. Article in Journal/Newspaper North-Western Russia Høgskolen i Innlandet: Brage INN Norway Pinega ENVELOPE(41.909,41.909,64.134,64.134) |
institution |
Open Polar |
collection |
Høgskolen i Innlandet: Brage INN |
op_collection_id |
fthsinnlandet |
language |
English |
topic |
egg predation grouse VDP::Mathematics and natural science: 400::Zoology and botany: 480 |
spellingShingle |
egg predation grouse VDP::Mathematics and natural science: 400::Zoology and botany: 480 Wegge, Per Ingul, Halvor Pollen, Vebjørn Oppegaard Halvorsrud, Emil Sivkov, Andrey V. Hjeljord Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests |
topic_facet |
egg predation grouse VDP::Mathematics and natural science: 400::Zoology and botany: 480 |
description |
The article can also be located on the Ornis Fennica webpage: http://www.ornisfennica.org/index.htm Egg predation is an important determinant of breeding success among boreal forest grouse, but the relative roles ofmammalian and avian predators are poorly known. During spring/early summer of 2010, predation on artificial nests was studied by placing nests on the ground and on 1.5-m tall poles at two forested areas. One study site was highly fragmented due to intensive forestry (Varaldskogen, Norway) and the other site was a pristine, natural forest in north-western Russia (Pinega Forest Reserve). The nests on poles were subject to predation by birds and those on the ground by both mammals and birds. Total predationwas significantly higher inVaraldskogen than in Pinega. Ground nests suffered ca. 2.5 times higher losses than nests on poles. In Pinega, predation did not differ between the two nest types. The difference between the two areas was probably due to different predator guilds:mammalian generalist predators, such as theRed Fox (Vulpes vulpes) and Badger (Meles meles), were common in Varaldskogen but scarce or absent in Pinega. Canopy cover explained most of the variation in predation rate in Varaldskogen, but no significant relationship with canopy or nest concealment was detected in Pinega. Predation on pole nests varied across habitat types in a similarmanner at the two areas, but predation on ground nests did not. As Raven (Corvus corax) and Hooded Crow (Corvus corone cornix)were rare in both areas, these findings suggest similar searching and predatory behaviour of the two main (smaller) corvids, the Eurasian Jay (Garrulus glandarius) in Varaldskogen and the Siberian Jay (Perisoreus infaustus) in Pinega. Although the study design allowed a comparison between avian andmammalian nest predators, the lack of a clearer relationship between predation and certain variables suggests that nest predation is a complex process involving components of predator behaviour. |
format |
Article in Journal/Newspaper |
author |
Wegge, Per Ingul, Halvor Pollen, Vebjørn Oppegaard Halvorsrud, Emil Sivkov, Andrey V. Hjeljord |
author_facet |
Wegge, Per Ingul, Halvor Pollen, Vebjørn Oppegaard Halvorsrud, Emil Sivkov, Andrey V. Hjeljord |
author_sort |
Wegge, Per |
title |
Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests |
title_short |
Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests |
title_full |
Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests |
title_fullStr |
Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests |
title_full_unstemmed |
Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests |
title_sort |
comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests |
publisher |
Suomen lintutieteellinen yhdistys |
publishDate |
2012 |
url |
http://hdl.handle.net/11250/134552 |
long_lat |
ENVELOPE(41.909,41.909,64.134,64.134) |
geographic |
Norway Pinega |
geographic_facet |
Norway Pinega |
genre |
North-Western Russia |
genre_facet |
North-Western Russia |
op_source |
145-156 89 Ornis Fennica |
op_relation |
Wegge, P., Ingul, H., Pollen, V. O., Halvorsrud, E., Sivkov, A. V., & Hjeljord, O. (2012). Comparing predation on forest grouse nests by avian and mammalian predators in two contrasting boreal forest landscapes by the use of artificial nests. Ornis Fennica, 89, 145-156. http://hdl.handle.net/11250/134552 |
_version_ |
1792503440499277824 |