The distribution of diatom flora in ice caves of the northern Yukon Territory, Canada: relationship to air circulation and freezing
In the late 1980’s and early 1990’s, various media in karst environments in the Northern Yukon Territory were examined for their diatom content. Cryogenic cave calcite powders, grus and various ice formations (ice plugs, ice stalagmites and floor ice) were collected from three freezing caves and one...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of South Florida Libraries
2006-07-01
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| Series: | International Journal of Speleology |
| Subjects: | |
| Online Access: | http://www.ijs.speleo.it/pdf/64.540.35_Lauriol.Prevost.Lacelle.pdf |
| _version_ | 1819024675441737728 |
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| author | Lauriol Bernard Prévost Clément Lacelle Denis |
| author_facet | Lauriol Bernard Prévost Clément Lacelle Denis |
| author_sort | Lauriol Bernard |
| collection | DOAJ |
| description | In the late 1980’s and early 1990’s, various media in karst environments in the Northern Yukon Territory were examined for their diatom content. Cryogenic cave calcite powders, grus and various ice formations (ice plugs, ice stalagmites and floor ice) were collected from three freezing caves and one slope cave to make an inventory of the diatom content, and to explain the spatial distribution of the diatoms within the caves. The results show that approximately 20% of diatoms in the caves originate from external biotopes and habitats (e.g., river, lake, stream), with the remaining 80% of local origin (i.e., from subaerial habitats near cave entrances). The results also indicate that the greater abundance of diatoms is found in the larger caves. This is explained by the fact that the air circulation dynamics are much more important in caves that have a larger entrance. Also grus, ice plugs and ice stalagmites have the lowest diatom diversity, but greater relative abundance, indicative of growth in specific habitats or under specific conditions. Overall, these results are a contribution to the study of particles transport in ice caves. |
| first_indexed | 2024-12-21T04:58:33Z |
| format | Article |
| id | doaj.art-c932bd1299b24c3ca6b8002bab478c68 |
| institution | Directory Open Access Journal |
| issn | 0392-6672 1827-806X |
| language | English |
| last_indexed | 2024-12-21T04:58:33Z |
| publishDate | 2006-07-01 |
| publisher | University of South Florida Libraries |
| record_format | Article |
| series | International Journal of Speleology |
| spelling | doaj.art-c932bd1299b24c3ca6b8002bab478c682022-12-21T19:15:18ZengUniversity of South Florida LibrariesInternational Journal of Speleology0392-66721827-806X2006-07-013528392The distribution of diatom flora in ice caves of the northern Yukon Territory, Canada: relationship to air circulation and freezingLauriol BernardPrévost ClémentLacelle DenisIn the late 1980’s and early 1990’s, various media in karst environments in the Northern Yukon Territory were examined for their diatom content. Cryogenic cave calcite powders, grus and various ice formations (ice plugs, ice stalagmites and floor ice) were collected from three freezing caves and one slope cave to make an inventory of the diatom content, and to explain the spatial distribution of the diatoms within the caves. The results show that approximately 20% of diatoms in the caves originate from external biotopes and habitats (e.g., river, lake, stream), with the remaining 80% of local origin (i.e., from subaerial habitats near cave entrances). The results also indicate that the greater abundance of diatoms is found in the larger caves. This is explained by the fact that the air circulation dynamics are much more important in caves that have a larger entrance. Also grus, ice plugs and ice stalagmites have the lowest diatom diversity, but greater relative abundance, indicative of growth in specific habitats or under specific conditions. Overall, these results are a contribution to the study of particles transport in ice caves.http://www.ijs.speleo.it/pdf/64.540.35_Lauriol.Prevost.Lacelle.pdfdiatomsice caveslope cavefreezing cavecryogenic cave calcitegrus |
| spellingShingle | Lauriol Bernard Prévost Clément Lacelle Denis The distribution of diatom flora in ice caves of the northern Yukon Territory, Canada: relationship to air circulation and freezing International Journal of Speleology diatoms ice cave slope cave freezing cave cryogenic cave calcite grus |
| title | The distribution of diatom flora in ice caves of the northern Yukon Territory, Canada: relationship to air circulation and freezing |
| title_full | The distribution of diatom flora in ice caves of the northern Yukon Territory, Canada: relationship to air circulation and freezing |
| title_fullStr | The distribution of diatom flora in ice caves of the northern Yukon Territory, Canada: relationship to air circulation and freezing |
| title_full_unstemmed | The distribution of diatom flora in ice caves of the northern Yukon Territory, Canada: relationship to air circulation and freezing |
| title_short | The distribution of diatom flora in ice caves of the northern Yukon Territory, Canada: relationship to air circulation and freezing |
| title_sort | distribution of diatom flora in ice caves of the northern yukon territory canada relationship to air circulation and freezing |
| topic | diatoms ice cave slope cave freezing cave cryogenic cave calcite grus |
| url | http://www.ijs.speleo.it/pdf/64.540.35_Lauriol.Prevost.Lacelle.pdf |
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