The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NWRussia
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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ftciteseerx:oai:CiteSeerX.psu:10.1.1.664.4444 2023-05-15T18:30:53+02:00 The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NWRussia Vladimir Borchtchevski The Pennsylvania State University CiteSeerX Archives 2008 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.4444 http://ornisfennica.org/pdf/latest/3Borchtchevski.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.4444 http://ornisfennica.org/pdf/latest/3Borchtchevski.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://ornisfennica.org/pdf/latest/3Borchtchevski.pdf text 2008 ftciteseerx 2016-01-08T17:01:46Z 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. 1. Text taiga Unknown Tive ENVELOPE(12.480,12.480,65.107,65.107) |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
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. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Vladimir Borchtchevski |
spellingShingle |
Vladimir Borchtchevski The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NWRussia |
author_facet |
Vladimir Borchtchevski |
author_sort |
Vladimir Borchtchevski |
title |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NWRussia |
title_short |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NWRussia |
title_full |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NWRussia |
title_fullStr |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NWRussia |
title_full_unstemmed |
The May diet of Capercaillie (Tetrao urogallus) in an extensively logged area of NWRussia |
title_sort |
may diet of capercaillie (tetrao urogallus) in an extensively logged area of nwrussia |
publishDate |
2008 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.4444 http://ornisfennica.org/pdf/latest/3Borchtchevski.pdf |
long_lat |
ENVELOPE(12.480,12.480,65.107,65.107) |
geographic |
Tive |
geographic_facet |
Tive |
genre |
taiga |
genre_facet |
taiga |
op_source |
http://ornisfennica.org/pdf/latest/3Borchtchevski.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.664.4444 http://ornisfennica.org/pdf/latest/3Borchtchevski.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766214504854585344 |