Decomposition in Arctic terrestrial environments
The principal goal of this research unit is to further elucidate the rate and quality of microbial decomposition within cold, wet, Arctic tundra peat soils found in water tract systems of Foothills Province terrain (8-10{degree}) on the north slope of Alaska. Research objectives include demonstratio...
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ftosti:oai:osti.gov:5596562 2023-07-30T04:00:59+02:00 Decomposition in Arctic terrestrial environments Laursen, G.A. 2020-07-31 application/pdf http://www.osti.gov/servlets/purl/5596562 https://www.osti.gov/biblio/5596562 https://doi.org/10.2172/5596562 unknown http://www.osti.gov/servlets/purl/5596562 https://www.osti.gov/biblio/5596562 https://doi.org/10.2172/5596562 doi:10.2172/5596562 59 BASIC BIOLOGICAL SCIENCES CELLULOSE METABOLISM PEAT DECOMPOSITION ALASKA ARCTIC REGIONS BIOMASS CELLULASE MICROORGANISMS PROGRESS REPORT SITE CHARACTERIZATION WATER CARBOHYDRATES CHEMICAL REACTIONS DOCUMENT TYPES ENERGY SOURCES ENZYMES FEDERAL REGION X FOSSIL FUELS FUELS GLYCOSYL HYDROLASES HYDROGEN COMPOUNDS HYDROLASES NORTH AMERICA O-GLYCOSYL HYDROLASES ORGANIC COMPOUNDS ORGANIC MATTER OXYGEN COMPOUNDS POLAR REGIONS POLYSACCHARIDES RENEWABLE ENERGY SOURCES SACCHARIDES USA 2020 ftosti https://doi.org/10.2172/5596562 2023-07-11T10:41:03Z The principal goal of this research unit is to further elucidate the rate and quality of microbial decomposition within cold, wet, Arctic tundra peat soils found in water tract systems of Foothills Province terrain (8-10{degree}) on the north slope of Alaska. Research objectives include demonstration of of four hypotheses. A positive correlation exists between the rate of decomposing litter and the viable microbial (fungal) biomass, as measured by ARP activities and direct counts, associated with that litter. In Arctic tundra peat soil systems, there exists a positive correlation between the presence and abundance of viable mycelial biomass and the enzymatic potential for degradative activity as measured by the presence of cellulase, peroxidase, chitinase and protease enzymes produced by the miocrobial community. Substrate quality, as defined by lignin to cellulose ratios, influences the rate of natural litter decomposition. The lignin to total nitrogen ratio describes an inverse correlation to decomposition rates of litter. Other/Unknown Material Arctic north slope Tundra Alaska SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Arctic |
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Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
59 BASIC BIOLOGICAL SCIENCES CELLULOSE METABOLISM PEAT DECOMPOSITION ALASKA ARCTIC REGIONS BIOMASS CELLULASE MICROORGANISMS PROGRESS REPORT SITE CHARACTERIZATION WATER CARBOHYDRATES CHEMICAL REACTIONS DOCUMENT TYPES ENERGY SOURCES ENZYMES FEDERAL REGION X FOSSIL FUELS FUELS GLYCOSYL HYDROLASES HYDROGEN COMPOUNDS HYDROLASES NORTH AMERICA O-GLYCOSYL HYDROLASES ORGANIC COMPOUNDS ORGANIC MATTER OXYGEN COMPOUNDS POLAR REGIONS POLYSACCHARIDES RENEWABLE ENERGY SOURCES SACCHARIDES USA |
spellingShingle |
59 BASIC BIOLOGICAL SCIENCES CELLULOSE METABOLISM PEAT DECOMPOSITION ALASKA ARCTIC REGIONS BIOMASS CELLULASE MICROORGANISMS PROGRESS REPORT SITE CHARACTERIZATION WATER CARBOHYDRATES CHEMICAL REACTIONS DOCUMENT TYPES ENERGY SOURCES ENZYMES FEDERAL REGION X FOSSIL FUELS FUELS GLYCOSYL HYDROLASES HYDROGEN COMPOUNDS HYDROLASES NORTH AMERICA O-GLYCOSYL HYDROLASES ORGANIC COMPOUNDS ORGANIC MATTER OXYGEN COMPOUNDS POLAR REGIONS POLYSACCHARIDES RENEWABLE ENERGY SOURCES SACCHARIDES USA Laursen, G.A. Decomposition in Arctic terrestrial environments |
topic_facet |
59 BASIC BIOLOGICAL SCIENCES CELLULOSE METABOLISM PEAT DECOMPOSITION ALASKA ARCTIC REGIONS BIOMASS CELLULASE MICROORGANISMS PROGRESS REPORT SITE CHARACTERIZATION WATER CARBOHYDRATES CHEMICAL REACTIONS DOCUMENT TYPES ENERGY SOURCES ENZYMES FEDERAL REGION X FOSSIL FUELS FUELS GLYCOSYL HYDROLASES HYDROGEN COMPOUNDS HYDROLASES NORTH AMERICA O-GLYCOSYL HYDROLASES ORGANIC COMPOUNDS ORGANIC MATTER OXYGEN COMPOUNDS POLAR REGIONS POLYSACCHARIDES RENEWABLE ENERGY SOURCES SACCHARIDES USA |
description |
The principal goal of this research unit is to further elucidate the rate and quality of microbial decomposition within cold, wet, Arctic tundra peat soils found in water tract systems of Foothills Province terrain (8-10{degree}) on the north slope of Alaska. Research objectives include demonstration of of four hypotheses. A positive correlation exists between the rate of decomposing litter and the viable microbial (fungal) biomass, as measured by ARP activities and direct counts, associated with that litter. In Arctic tundra peat soil systems, there exists a positive correlation between the presence and abundance of viable mycelial biomass and the enzymatic potential for degradative activity as measured by the presence of cellulase, peroxidase, chitinase and protease enzymes produced by the miocrobial community. Substrate quality, as defined by lignin to cellulose ratios, influences the rate of natural litter decomposition. The lignin to total nitrogen ratio describes an inverse correlation to decomposition rates of litter. |
author |
Laursen, G.A. |
author_facet |
Laursen, G.A. |
author_sort |
Laursen, G.A. |
title |
Decomposition in Arctic terrestrial environments |
title_short |
Decomposition in Arctic terrestrial environments |
title_full |
Decomposition in Arctic terrestrial environments |
title_fullStr |
Decomposition in Arctic terrestrial environments |
title_full_unstemmed |
Decomposition in Arctic terrestrial environments |
title_sort |
decomposition in arctic terrestrial environments |
publishDate |
2020 |
url |
http://www.osti.gov/servlets/purl/5596562 https://www.osti.gov/biblio/5596562 https://doi.org/10.2172/5596562 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic north slope Tundra Alaska |
genre_facet |
Arctic north slope Tundra Alaska |
op_relation |
http://www.osti.gov/servlets/purl/5596562 https://www.osti.gov/biblio/5596562 https://doi.org/10.2172/5596562 doi:10.2172/5596562 |
op_doi |
https://doi.org/10.2172/5596562 |
_version_ |
1772811697693655040 |