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Filters: Tags: Monitoring 1-Changes in Plant and Animal Distribution: Ecosystems (X) > partyWithName: Ruess, Roger W. (X)

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We examined the effects of fire disturbance on permafrost degradation and thaw settlement across a series of wildfires (from ~1930 to 2010) in the forested areas of collapse-scar bog complexes in the Tanana Flats lowland of interior Alaska. Field measurements were combined with numerical modeling of soil thermal dynamics to assess the roles of fire severity and climate history in postfire permafrost dynamics. Field-based calculations of potential thaw settlement following the loss of remaining ice-rich permafrost averaged 0.6 m. This subsidence would cause the surface elevations of forests to drop on average 0.1 m below the surface water level of adjacent collapse-scar features. Up to 0.5 m of thaw settlement was...
We examined the effects of fire disturbance on permafrost degradation and thaw settlement across a series of wildfires (from ~1930 to 2010) in the forested areas of collapse-scar bog complexes in the Tanana Flats lowland of interior Alaska. Field measurements were combined with numerical modeling of soil thermal dynamics to assess the roles of fire severity and climate history in postfire permafrost dynamics. Field-based calculations of potential thaw settlement following the loss of remaining ice-rich permafrost averaged 0.6 m. This subsidence would cause the surface elevations of forests to drop on average 0.1 m below the surface water level of adjacent collapse-scar features. Up to 0.5 m of thaw settlement was...
    map background search result map search result map Interactive effects of wildfire and climate on permafrost degradation in Alaskan lowland forests Variation in carbohydrate source–sink relations of forest and treeline white spruce in southern, interior and northern Alaska Nitrogen additions to pristine, high-latitude, forest ecosystems; consequences for soil nitrogen transformations and retention in mid and late succession Effects of migratory geese on plant communities of an Alaskan salt marsh Development of Alnus tenuifolia stands on an Alaskan floodplain: patterns of recruitment, disease and succession Soil and root respiration in mature Alaskan black spruce forests that vary in soil organic matter decomposition rates Twenty-five years of vegetation change along a putative successional chronosequence on the Tanana River, Alaska Successional and physical controls on the retention of nitrogen in an undisturbed boreal forest ecosystem Limitations to Symbiotic Nitrogen Fixation in Primary Succession on the Tanana River Floodplain Twenty-five years of vegetation change along a putative successional chronosequence on the Tanana River, Alaska Nitrogen additions to pristine, high-latitude, forest ecosystems; consequences for soil nitrogen transformations and retention in mid and late succession Soil and root respiration in mature Alaskan black spruce forests that vary in soil organic matter decomposition rates Successional and physical controls on the retention of nitrogen in an undisturbed boreal forest ecosystem Limitations to Symbiotic Nitrogen Fixation in Primary Succession on the Tanana River Floodplain Interactive effects of wildfire and climate on permafrost degradation in Alaskan lowland forests Effects of migratory geese on plant communities of an Alaskan salt marsh Development of Alnus tenuifolia stands on an Alaskan floodplain: patterns of recruitment, disease and succession Variation in carbohydrate source–sink relations of forest and treeline white spruce in southern, interior and northern Alaska