The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia
The May crop contents of Capercaillie (Tetrao urogallus) from a highly disturbed (logged) area of NW Russia are documented for the first time. Plants of the tree-shrub layer and bog plants of the field layer together formed the main part of the diets of both cocks (75% of fresh weight) and hens (58%...
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BirdLife Finland
2009
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fttsvojs:oai:journal.fi:article/133717 2023-09-05T13:23:40+02:00 The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia Borchtchevski, V. 2009-03-31 application/pdf https://ornisfennica.journal.fi/article/view/133717 eng eng BirdLife Finland https://ornisfennica.journal.fi/article/view/133717/82267 https://ornisfennica.journal.fi/article/view/133717 Ornis Fennica; Vol 86 Nro 1 (2009); 18–29 Ornis Fennica; Vol. 86 No. 1 (2009); 18–29 0030-5685 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2009 fttsvojs 2023-08-23T23:03:04Z The May crop contents of Capercaillie (Tetrao urogallus) from a highly disturbed (logged) area of NW Russia are documented for the first time. Plants of the tree-shrub layer and bog plants of the field layer together formed the main part of the diets of both cocks (75% of fresh weight) and hens (58%). Fragments of pine (Pinus sylvestris) and bil-berry (Vaccinium myrtillus) were more abundant in crops of cocks, whereas hens con-sumed more young herbaceous shoots and track-side plants. Hens also garnered spruce seeds (Picea spp.) from tracks. Track-side food items formed up to a third of the diet of hens. These included shoots of clover (Trifolium spp.) and especially flower buds of coltsfoot (Tussilago farfara). Complete elimination of some forest tracks, as a manage-ment technique for Capercaillie, could result in a loss of food sources important to hens in most of their Eastern-European range. The closure of tracks from people and vehicles, and their conversion to habitat where spring-blooming plants for hens abundantly grow, seems a more viable conservation option. Even in a highly disturbed area, plants of the na-tive taiga biotopes composed almost all the diet of cocks (ca. 97%). Compared to the cocks, the feeding strategy of hens was more opportunistic; hence, their spring diet may be less vulnerable to logging perturbations. Article in Journal/Newspaper taiga Federation of Finnish Learned Societies: Scientific Journals Online Tive ENVELOPE(12.480,12.480,65.107,65.107) |
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Open Polar |
collection |
Federation of Finnish Learned Societies: Scientific Journals Online |
op_collection_id |
fttsvojs |
language |
English |
description |
The May crop contents of Capercaillie (Tetrao urogallus) from a highly disturbed (logged) area of NW Russia are documented for the first time. Plants of the tree-shrub layer and bog plants of the field layer together formed the main part of the diets of both cocks (75% of fresh weight) and hens (58%). Fragments of pine (Pinus sylvestris) and bil-berry (Vaccinium myrtillus) were more abundant in crops of cocks, whereas hens con-sumed more young herbaceous shoots and track-side plants. Hens also garnered spruce seeds (Picea spp.) from tracks. Track-side food items formed up to a third of the diet of hens. These included shoots of clover (Trifolium spp.) and especially flower buds of coltsfoot (Tussilago farfara). Complete elimination of some forest tracks, as a manage-ment technique for Capercaillie, could result in a loss of food sources important to hens in most of their Eastern-European range. The closure of tracks from people and vehicles, and their conversion to habitat where spring-blooming plants for hens abundantly grow, seems a more viable conservation option. Even in a highly disturbed area, plants of the na-tive taiga biotopes composed almost all the diet of cocks (ca. 97%). Compared to the cocks, the feeding strategy of hens was more opportunistic; hence, their spring diet may be less vulnerable to logging perturbations. |
format |
Article in Journal/Newspaper |
author |
Borchtchevski, V. |
spellingShingle |
Borchtchevski, V. The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia |
author_facet |
Borchtchevski, V. |
author_sort |
Borchtchevski, V. |
title |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia |
title_short |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia |
title_full |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia |
title_fullStr |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia |
title_full_unstemmed |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NW Russia |
title_sort |
may diet of capercaillie (tetrao urogallus) in an extensively logged area of nw russia |
publisher |
BirdLife Finland |
publishDate |
2009 |
url |
https://ornisfennica.journal.fi/article/view/133717 |
long_lat |
ENVELOPE(12.480,12.480,65.107,65.107) |
geographic |
Tive |
geographic_facet |
Tive |
genre |
taiga |
genre_facet |
taiga |
op_source |
Ornis Fennica; Vol 86 Nro 1 (2009); 18–29 Ornis Fennica; Vol. 86 No. 1 (2009); 18–29 0030-5685 |
op_relation |
https://ornisfennica.journal.fi/article/view/133717/82267 https://ornisfennica.journal.fi/article/view/133717 |
_version_ |
1776204258197110784 |