Ecologist
Office of the Chief Operating Officer
Email:
estets@usgs.gov
Office Phone:
763-272-8689
ORCID:
0000-0001-5375-0196
Supervisor:
Jennifer L Keisman
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This dataset provides timeseries data on water quality and quantity, as collected or computed from outside sources. The format is many tables with one row per time series observation (1 tab-delimited file per site-variable combination, 1 zip file per site). This compilation of data is intended for use in estimating or interpreting metabolism. Sites were included if they met the initial criteria of having at least 100 dissolved oxygen observations and one of the accepted NWIS site types ('ST','ST-CA','ST-DCH','ST-TS', or 'SP'). This dataset is part of a larger data release of metabolism model inputs and outputs for 356 streams and rivers across the United States (https://doi.org/10.5066/F70864KX). The complete release...
Tags: 007,
012,
AK,
AL,
AR, All tags...
Aerobic respiration,
Alabama,
Alaska,
Arkansas,
CA,
CO,
CT,
California,
Carbon,
Carbon dioxide,
Colorado,
Connecticut,
DC,
DE,
Delaware,
Dissolved oxygen,
District of Columbia,
Energy metabolism,
FL,
Florida,
GA,
Gas exchange,
Georgia,
IA,
ID,
IL,
IN,
Idaho,
Illinois,
Indiana,
Iowa,
KS,
KY,
Kansas,
Kentucky,
LA,
Louisiana,
MA,
MD,
ME,
MI,
MN,
MO,
MS,
MT,
Maine,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Missouri,
Montana,
NC,
ND,
NE,
NJ,
NM,
NY,
Nebraska,
New Jersey,
New Mexico,
New York,
North Carolina,
North Dakota,
OH,
OK,
OR,
Ohio,
Oklahoma,
Oregon,
Oxygen,
PA,
PR,
Pennsylvania,
Photosynthesis,
Primary production,
Puerto Rico,
Rivers,
SC,
SD,
South Carolina,
South Dakota,
Streams,
TN,
TX,
Tennessee,
Texas,
US,
UT,
United States,
Utah,
VA,
Virginia,
WA,
WI,
WV,
WY,
Washington,
Water courses,
West Virginia,
Wisconsin,
Wyoming,
environment,
inlandWaters, Fewer tags
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A nested sampling network on the Colorado (CR) and Missouri Rivers (MR) provided data to assess impacts of large-scale reservoir systems and climate on carbon export. The Load Estimator (LOADEST) model was used to estimate both dissolved inorganic and organic carbon (DIC and DOC) fluxes for a total of 22 sites along the main stems of the CR and MR. Both the upper CR and MR DIC and DOC fluxes increased longitudinally, but the lower CR fluxes decreased while the lower MRs continued to increase. We examined multiple factors through space and time that help explain these flux patterns. Seasonal variability in precipitation and temperature, along with site-level concentration versus discharge relationships proved to...
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Abstract The processes and biomass that characterize any ecosystem are fundamentally constrained by the total amount of energy that is either fixed within or delivered across its boundaries. Ultimately, ecosystems may be understood and classified by their rates of total and net productivity and by the seasonal patterns of photosynthesis and respiration. Such understanding is well developed for terrestrial and lentic ecosystems but our understanding of ecosystem phenology has lagged well behind for rivers. The proliferation of reliable and inexpensive sensors for monitoring dissolved oxygen and carbon dioxide is underpinning a revolution in our understanding of the ecosystem energetics of rivers. Here, we synthesize...
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This dataset provides input data formatted for use in estimating metabolism. The format is tables of prepared time series inputs (1 tab-delimited file per site, in 1 zip file per site). This dataset is part of a larger data release of metabolism model inputs and outputs for 356 streams and rivers across the United States (https://doi.org/10.5066/F70864KX). The complete release includes: modeled estimates of gross primary productivity, ecosystem respiration, and the gas exchange coefficient; model input data and alternative input data; model fit and diagnostic information; site catchment boundaries and site point locations; and potential predictors of metabolism such as discharge and light availability.
Tags: 007,
012,
AK,
AR,
Aerobic respiration, All tags...
Alaska,
Arkansas,
CA,
CO,
CT,
California,
Carbon,
Carbon dioxide,
Colorado,
Connecticut,
DC,
DE,
Delaware,
Dissolved oxygen,
District of Columbia,
Energy metabolism,
FL,
Florida,
GA,
Gas exchange,
Georgia,
IA,
ID,
IL,
IN,
Idaho,
Illinois,
Indiana,
Iowa,
KS,
KY,
Kansas,
Kentucky,
LA,
Louisiana,
MA,
MD,
MI,
MN,
MO,
Maryland,
Massachusetts,
Michigan,
Minnesota,
Missouri,
NC,
ND,
NE,
NJ,
NM,
NY,
Nebraska,
New Jersey,
New Mexico,
New York,
North Carolina,
North Dakota,
OH,
OK,
OR,
Ohio,
Oklahoma,
Oregon,
Oxygen,
PA,
Pennsylvania,
Photosynthesis,
Primary production,
Rivers,
SC,
SD,
South Carolina,
South Dakota,
Streams,
TN,
TX,
Tennessee,
Texas,
US,
UT,
United States,
Utah,
VA,
Virginia,
WA,
WI,
WV,
WY,
Washington,
Water courses,
West Virginia,
Wisconsin,
Wyoming,
environment,
inlandWaters, Fewer tags
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This research focuses on understanding processes controlling temporal and spatial variability in aquatic carbon fluxes in headwater streams. Headwater streams are areas of active carbon cycling because of steep topographic gradients, complex soil and vegetation patterns, and an abundance of small lakes and streams. The project will combine information from the following major components: High-frequency measurements of aquatic carbon fluxes using in-stream sensors will provide information on temporal dynamics at unprecedented resolution. A geostatistical model will be developed to characterize relations between landscape type (e.g., wetlands, forest, tundra) and aquatic C dynamics and fluxes. Variations in fluxes...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Aquatic Carbon,
Carbon fluxes,
Colorado,
Geostatistics,
Modeling, All tags...
Rocky Mountain National Park,
Rocky Mountains,
Staging,
Wetlands,
land use and land cover,
temporal dynamics, Fewer tags
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