Quantitative differentiation of types of feeding craters of Rangifer tarandus fennicus
During winter 1983-1984 in the Kainuu region of eastern Finland, based on 1363 api profiles, the Värriö Snow Index (VSI) modelled 3 different types of feeding craters dug by Rangifer tarandus fennicus. When mean log VSI of control sites = < ca. 1.4, the animals used suov'dnji (Lappish) or in...
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| Format: | Article |
| Language: | English |
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Septentrio Academic Publishing
1992-10-01
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| Series: | Rangifer |
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| Online Access: | https://septentrio.uit.no/index.php/rangifer/article/view/1022 |
| _version_ | 1818448819597082624 |
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| author | William O. Pruitt, Jr. |
| author_facet | William O. Pruitt, Jr. |
| author_sort | William O. Pruitt, Jr. |
| collection | DOAJ |
| description | During winter 1983-1984 in the Kainuu region of eastern Finland, based on 1363 api profiles, the Värriö Snow Index (VSI) modelled 3 different types of feeding craters dug by Rangifer tarandus fennicus. When mean log VSI of control sites = < ca. 1.4, the animals used suov'dnji (Lappish) or individual, single-use excavations; when mean log VSI of control sites = > 1.4 < ca. 2.1, the animals used fies'ki (Lappish) or cooperative excavations of the perimeter of a site; when mean log VSI of control sites = > ca. 2.6, the animals switched to using ciegar (Lappish) or linear extensions of a suov'dnji, excavated by a sequence of individuals^iegar-type feeding resulted in reduction of mean log VSI of feeding sites even though VSI of control sites increased. Ciegar-type feeding is interpreted as a successful behavioural adaptation to the Sub-Marginal Period. |
| first_indexed | 2024-12-14T20:25:34Z |
| format | Article |
| id | doaj.art-f61ce0a882874c96bbc60717a8cb7c13 |
| institution | Directory Open Access Journal |
| issn | 1890-6729 |
| language | English |
| last_indexed | 2024-12-14T20:25:34Z |
| publishDate | 1992-10-01 |
| publisher | Septentrio Academic Publishing |
| record_format | Article |
| series | Rangifer |
| spelling | doaj.art-f61ce0a882874c96bbc60717a8cb7c132022-12-21T22:48:38ZengSeptentrio Academic PublishingRangifer1890-67291992-10-0112110.7557/2.12.1.1022962Quantitative differentiation of types of feeding craters of Rangifer tarandus fennicusWilliam O. Pruitt, Jr.During winter 1983-1984 in the Kainuu region of eastern Finland, based on 1363 api profiles, the Värriö Snow Index (VSI) modelled 3 different types of feeding craters dug by Rangifer tarandus fennicus. When mean log VSI of control sites = < ca. 1.4, the animals used suov'dnji (Lappish) or individual, single-use excavations; when mean log VSI of control sites = > 1.4 < ca. 2.1, the animals used fies'ki (Lappish) or cooperative excavations of the perimeter of a site; when mean log VSI of control sites = > ca. 2.6, the animals switched to using ciegar (Lappish) or linear extensions of a suov'dnji, excavated by a sequence of individuals^iegar-type feeding resulted in reduction of mean log VSI of feeding sites even though VSI of control sites increased. Ciegar-type feeding is interpreted as a successful behavioural adaptation to the Sub-Marginal Period.https://septentrio.uit.no/index.php/rangifer/article/view/1022reindeerRangiferfeeding adaptationsbehaviourwinter ecologysnow |
| spellingShingle | William O. Pruitt, Jr. Quantitative differentiation of types of feeding craters of Rangifer tarandus fennicus Rangifer reindeer Rangifer feeding adaptations behaviour winter ecology snow |
| title | Quantitative differentiation of types of feeding craters of Rangifer tarandus fennicus |
| title_full | Quantitative differentiation of types of feeding craters of Rangifer tarandus fennicus |
| title_fullStr | Quantitative differentiation of types of feeding craters of Rangifer tarandus fennicus |
| title_full_unstemmed | Quantitative differentiation of types of feeding craters of Rangifer tarandus fennicus |
| title_short | Quantitative differentiation of types of feeding craters of Rangifer tarandus fennicus |
| title_sort | quantitative differentiation of types of feeding craters of rangifer tarandus fennicus |
| topic | reindeer Rangifer feeding adaptations behaviour winter ecology snow |
| url | https://septentrio.uit.no/index.php/rangifer/article/view/1022 |
| work_keys_str_mv | AT williamopruittjr quantitativedifferentiationoftypesoffeedingcratersofrangifertarandusfennicus |