Reconnaissance Observations of Long-Term Natural Vegetation Recovery in the Cape Thompson Region, Alaska, and Additions to the Checklist of Flora
The diversity of disturbance types, landforms, vegetation and soils, together with the large, well-documented flora, makes Cape Thompson an ideal site to study long-term (20-year) environmental adjustments after impact. Man-caused disturbances there between 1958 and 1962 fall into three categories:...
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ftdtic:ADA158724 2023-05-15T18:40:12+02:00 Reconnaissance Observations of Long-Term Natural Vegetation Recovery in the Cape Thompson Region, Alaska, and Additions to the Checklist of Flora Everett, K R Murray, B M Murray, D F Johnson, A W Linkins, A E COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1985-06 text/html http://www.dtic.mil/docs/citations/ADA158724 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA158724 en eng http://www.dtic.mil/docs/citations/ADA158724 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Aerodynamics Biology *VEGETATION *PLANTS(BOTANY) RECOVERY OBSERVATION SITES DESTRUCTION ALASKA LONG RANGE(TIME) SOILS GROUND VEHICLES FROST RUNWAYS OFFROAD TRAFFIC EXCAVATION LANDFORMS ECOLOGY LICHENS SCARS TUNDRA *Revegetation Cape Thompson Text 1985 ftdtic 2016-02-21T00:50:33Z The diversity of disturbance types, landforms, vegetation and soils, together with the large, well-documented flora, makes Cape Thompson an ideal site to study long-term (20-year) environmental adjustments after impact. Man-caused disturbances there between 1958 and 1962 fall into three categories: runways, excavations and off-road vehicle trails. In addition, natural disturbance by frost action creates scars. Reestablished vegetation after 20 years consisted of species found in adjacent undisturbed landscapes. Vegetation on excavations and cut-and-fill surfaces consisted of 3-5% vascular plants, of which Deschampsia cespitosa and Sagina nivalis are the most important (in terms of cover and frequency) of the 33 species identified. Cryptogams generally made up less than 1% of the vegetation, with lichens showing the least reestablishment. The tundra at Ogotoruk Creek has shown considerable resiliency in terms of reestablishment of vegetation, especially in the moister sites where bank slumping and lateral migration of vegetation is effective. On the more-exposed, better-drained sites, as on frost scars, the continuing interplay between physical and biological forces has prevented directional or progressive plant succession. Text Tundra Alaska Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Aerodynamics Biology *VEGETATION *PLANTS(BOTANY) RECOVERY OBSERVATION SITES DESTRUCTION ALASKA LONG RANGE(TIME) SOILS GROUND VEHICLES FROST RUNWAYS OFFROAD TRAFFIC EXCAVATION LANDFORMS ECOLOGY LICHENS SCARS TUNDRA *Revegetation Cape Thompson |
spellingShingle |
Aerodynamics Biology *VEGETATION *PLANTS(BOTANY) RECOVERY OBSERVATION SITES DESTRUCTION ALASKA LONG RANGE(TIME) SOILS GROUND VEHICLES FROST RUNWAYS OFFROAD TRAFFIC EXCAVATION LANDFORMS ECOLOGY LICHENS SCARS TUNDRA *Revegetation Cape Thompson Everett, K R Murray, B M Murray, D F Johnson, A W Linkins, A E Reconnaissance Observations of Long-Term Natural Vegetation Recovery in the Cape Thompson Region, Alaska, and Additions to the Checklist of Flora |
topic_facet |
Aerodynamics Biology *VEGETATION *PLANTS(BOTANY) RECOVERY OBSERVATION SITES DESTRUCTION ALASKA LONG RANGE(TIME) SOILS GROUND VEHICLES FROST RUNWAYS OFFROAD TRAFFIC EXCAVATION LANDFORMS ECOLOGY LICHENS SCARS TUNDRA *Revegetation Cape Thompson |
description |
The diversity of disturbance types, landforms, vegetation and soils, together with the large, well-documented flora, makes Cape Thompson an ideal site to study long-term (20-year) environmental adjustments after impact. Man-caused disturbances there between 1958 and 1962 fall into three categories: runways, excavations and off-road vehicle trails. In addition, natural disturbance by frost action creates scars. Reestablished vegetation after 20 years consisted of species found in adjacent undisturbed landscapes. Vegetation on excavations and cut-and-fill surfaces consisted of 3-5% vascular plants, of which Deschampsia cespitosa and Sagina nivalis are the most important (in terms of cover and frequency) of the 33 species identified. Cryptogams generally made up less than 1% of the vegetation, with lichens showing the least reestablishment. The tundra at Ogotoruk Creek has shown considerable resiliency in terms of reestablishment of vegetation, especially in the moister sites where bank slumping and lateral migration of vegetation is effective. On the more-exposed, better-drained sites, as on frost scars, the continuing interplay between physical and biological forces has prevented directional or progressive plant succession. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Everett, K R Murray, B M Murray, D F Johnson, A W Linkins, A E |
author_facet |
Everett, K R Murray, B M Murray, D F Johnson, A W Linkins, A E |
author_sort |
Everett, K R |
title |
Reconnaissance Observations of Long-Term Natural Vegetation Recovery in the Cape Thompson Region, Alaska, and Additions to the Checklist of Flora |
title_short |
Reconnaissance Observations of Long-Term Natural Vegetation Recovery in the Cape Thompson Region, Alaska, and Additions to the Checklist of Flora |
title_full |
Reconnaissance Observations of Long-Term Natural Vegetation Recovery in the Cape Thompson Region, Alaska, and Additions to the Checklist of Flora |
title_fullStr |
Reconnaissance Observations of Long-Term Natural Vegetation Recovery in the Cape Thompson Region, Alaska, and Additions to the Checklist of Flora |
title_full_unstemmed |
Reconnaissance Observations of Long-Term Natural Vegetation Recovery in the Cape Thompson Region, Alaska, and Additions to the Checklist of Flora |
title_sort |
reconnaissance observations of long-term natural vegetation recovery in the cape thompson region, alaska, and additions to the checklist of flora |
publishDate |
1985 |
url |
http://www.dtic.mil/docs/citations/ADA158724 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA158724 |
genre |
Tundra Alaska |
genre_facet |
Tundra Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA158724 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766229473089290240 |