Ecologist.
Email:
kmanies@usgs.gov
Office Phone:
650-329-5010
Fax:
650-329-4920
ORCID:
0000-0003-4941-9657
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Our objective is to improve the scientific understanding of the modes, rates, and mechanisms of carbon stabilization and losses in soils from Alaska, California, and other Western states. We focus on the biophysical and microbial mechanisms that drive carbon gains and losses, and to use our data to improve models of soil carbon cycling. This catalog supports research from several projects focused on soil carbon cycling. It encompasses multiple types of datasets including environmental, ecological, biological, isotopic, mineralogical, genomic, flux, and modeled data from water, vegetation, soil, and atmospheric matrices. The catalog will be available online and to the public. Therefore, publication of data through...
Tags: Alaska,
California,
carbon,
carbon sequestration,
carbon storage, All tags...
genomics,
grasslands,
methane,
microbes,
microbial communities,
minerals,
permafrost,
soil, Fewer tags
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Early studies of soil formation highlighted several key factors that together determine the degree of soil pedogenesis, which include climate, organisms (including vegetation), topography, and parent material (Jenny H.; 1941; Factors of Soil Formation, a System of Quantitative Pedology; https://doi.org/10.2134/agronj1941.00021962003300090016x). A soil chronosequence is defined as a series of soils in which all soil-forming factors except time are similar, where time is represented by soil or landform age. In 1978, the late Denis Marchand launched a project to identify, sample, and analyze soil profiles from seven soil chronosequences in the Western United States. The resulting datasets were compiled as part of a...
Categories: Data;
Tags: Arapaho cirque,
Colorado Front Range,
Cowlitz River,
Feather River,
Geochemistry, All tags...
Kane alluvial fans,
Merced River,
Rock Creek terrace deposits,
San Joaquin Valley,
Soil Sciences,
USGS Science Data Catalog (SDC),
Ventura marine terrace,
Yuba River,
environment,
geoscientificInformation,
soil chemistry,
soil chronosequence,
soil formation,
soil horizons, Fewer tags
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These data were collected to investigate how well wind speed and direction can be measured using a miniature sonic anemometer mounted in a joust configuration on a small uncrewed aircraft system (sUAS). Test flights occurred at a bog within Interior Alaska that was instrumented with an eddy covariance flux tower. Part of the tower's instrumentation was a highly accurate sonic anemometer which was used represented the real, or target, wind speed and direction. Because the sUAS and tower instruments are not co-located (as the sUAS is constantly moving) a concurrent experiment examined the amount of error due to this separation.
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In July 1992 soils were sampled from six dune fields in the northern Lower Peninsula of Michigan near Wilderness State Park, about 10 miles southwest of Mackinaw City. The dune fields represent a soil chronosequence, where all soil forming factors except time are held constant (climate, organisms, relief, and parent material). These sandy lake terrace soils are Entisols and Spodosols (Podzols), with ages ranging from 3,000 to 11,000 years. The samples were collected to examine podzolization and associated changes in soil properties. Samples collected for this study were assigned categorical profile and layer level descriptions for observable qualities such as soil color, structure, and texture at the time of collection....
Categories: Data;
Tags: Geochemistry,
Lower Michigan,
Lower Peninsula,
Michigan,
Podzolization, All tags...
Soil Sciences,
USGS Science Data Catalog (SDC),
Wilderness State Park,
environment,
geoscientificInformation, Fewer tags
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Geophysical measurements and related field data were collected by the U.S. Geological Survey (USGS) at the Alaska Peatland Experiment (APEX) site in Interior Alaska from 2018 to 2020 to characterize subsurface thermal and hydrologic conditions along a permafrost thaw gradient. The APEX site is managed by the Bonanza Creek LTER (Long Term Ecological Research). In July 2018, soil temperature and moisture sensors were installed at six out of the nine instrument locations (APEX1, APEX2, APEX3, APEX4, APEX7, APEX9). Thermistors (PS103J2, US Sensor, Orange, CA, USA) were placed at depths of 5, 30, 60, 120, and 180 centimeters (cm) with three replicates. Three sites (APEX1, APEX4, APEX9) contained an additional single...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Alaska,
Bonanza Creek,
Disturbance,
Fairbanks North Star,
GGGSC, All tags...
Geology, Geophysics, and Geochemistry Science Center,
Hydrologic processes,
Land Change Science Program,
Permafrost,
U.S. Geological Survey,
USGS,
environment,
field monitoring stations,
geoscientificInformation,
hydrologic processes,
permafrost,
soil moisture,
soil temperature, Fewer tags
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