Tundra Fire Effects on Soils and Three Plant Communities Along a Hill-Slope Gradient in the Seward Peninsula, Alaska
During summer 1977, wildfires burned extensive areas of low arctic tundra in the Seward Peninsula, Alaska. The present study was initiated in July 1978 to determine the effects of these fires on tundra soils and vegetation. Nine 10 m × 1 m permanent belt transects were established at regular interva...
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The Arctic Institute of North America
1981
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/65560 2023-05-15T14:19:17+02:00 Tundra Fire Effects on Soils and Three Plant Communities Along a Hill-Slope Gradient in the Seward Peninsula, Alaska Racine, Charles H. 1981-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65560 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65560/49474 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65560 ARCTIC; Vol. 34 No. 1 (1981): March: 1–100; 71-84 1923-1245 0004-0843 Fire ecology Revegetation Soils Tundra ecology Plant cover Imuruk Lake region Alaska Seward Peninsula info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1981 ftunivcalgaryojs 2022-03-22T21:22:35Z During summer 1977, wildfires burned extensive areas of low arctic tundra in the Seward Peninsula, Alaska. The present study was initiated in July 1978 to determine the effects of these fires on tundra soils and vegetation. Nine 10 m × 1 m permanent belt transects were established at regular intervals along the topographic gradient of a burned hill-slope in the central Seward Peninsula near Imuruk Lake. Soil characteristics and plant species density and cover were determined in each of the 90 1-m² plots on this slope during July of both 1978 and 1979. Soils and vegetation had been quantitatively sampled on this slope in 1973, thereby providing pre-fire comparisons; a sedge tussock-shrub tundra community with mud circles occupied the poorly drained footslope and a birch and ericaceous shrub tundra community with elongate turf-banked frost boils had developed on the moderately well-drained backslope. The broad, poorly-drained summit of this slope was occupied by sedge-shrub tundra with low-centered polygons. The severity of burning in July 1977 varied along this slope with moderate to heavy burning of the birch and ericaceous shrub tundra and light to moderate burning of the sedge tussock-shrub tundra and sedge-shrub tundra communities. Post-fire (1978 and 1979) changes in plant cover, species composition and soil thaw depths are shown to vary with position on the slope and burning severity. The relationship of these changes to natural succession in the absence of fire is discussed. Article in Journal/Newspaper Arctic Arctic Seward Peninsula Tundra Alaska University of Calgary Journal Hosting Arctic ARCTIC 34 1 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Fire ecology Revegetation Soils Tundra ecology Plant cover Imuruk Lake region Alaska Seward Peninsula |
spellingShingle |
Fire ecology Revegetation Soils Tundra ecology Plant cover Imuruk Lake region Alaska Seward Peninsula Racine, Charles H. Tundra Fire Effects on Soils and Three Plant Communities Along a Hill-Slope Gradient in the Seward Peninsula, Alaska |
topic_facet |
Fire ecology Revegetation Soils Tundra ecology Plant cover Imuruk Lake region Alaska Seward Peninsula |
description |
During summer 1977, wildfires burned extensive areas of low arctic tundra in the Seward Peninsula, Alaska. The present study was initiated in July 1978 to determine the effects of these fires on tundra soils and vegetation. Nine 10 m × 1 m permanent belt transects were established at regular intervals along the topographic gradient of a burned hill-slope in the central Seward Peninsula near Imuruk Lake. Soil characteristics and plant species density and cover were determined in each of the 90 1-m² plots on this slope during July of both 1978 and 1979. Soils and vegetation had been quantitatively sampled on this slope in 1973, thereby providing pre-fire comparisons; a sedge tussock-shrub tundra community with mud circles occupied the poorly drained footslope and a birch and ericaceous shrub tundra community with elongate turf-banked frost boils had developed on the moderately well-drained backslope. The broad, poorly-drained summit of this slope was occupied by sedge-shrub tundra with low-centered polygons. The severity of burning in July 1977 varied along this slope with moderate to heavy burning of the birch and ericaceous shrub tundra and light to moderate burning of the sedge tussock-shrub tundra and sedge-shrub tundra communities. Post-fire (1978 and 1979) changes in plant cover, species composition and soil thaw depths are shown to vary with position on the slope and burning severity. The relationship of these changes to natural succession in the absence of fire is discussed. |
format |
Article in Journal/Newspaper |
author |
Racine, Charles H. |
author_facet |
Racine, Charles H. |
author_sort |
Racine, Charles H. |
title |
Tundra Fire Effects on Soils and Three Plant Communities Along a Hill-Slope Gradient in the Seward Peninsula, Alaska |
title_short |
Tundra Fire Effects on Soils and Three Plant Communities Along a Hill-Slope Gradient in the Seward Peninsula, Alaska |
title_full |
Tundra Fire Effects on Soils and Three Plant Communities Along a Hill-Slope Gradient in the Seward Peninsula, Alaska |
title_fullStr |
Tundra Fire Effects on Soils and Three Plant Communities Along a Hill-Slope Gradient in the Seward Peninsula, Alaska |
title_full_unstemmed |
Tundra Fire Effects on Soils and Three Plant Communities Along a Hill-Slope Gradient in the Seward Peninsula, Alaska |
title_sort |
tundra fire effects on soils and three plant communities along a hill-slope gradient in the seward peninsula, alaska |
publisher |
The Arctic Institute of North America |
publishDate |
1981 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65560 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Seward Peninsula Tundra Alaska |
genre_facet |
Arctic Arctic Seward Peninsula Tundra Alaska |
op_source |
ARCTIC; Vol. 34 No. 1 (1981): March: 1–100; 71-84 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65560/49474 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65560 |
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ARCTIC |
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34 |
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1 |
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