Instrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Mark M Dornblaser (Former Employee)
Science and Products
Shingobee Headwaters Aquatic Ecosystems Project (SHAEP)
Discrete and high frequency water quality data for Allequash Creek, Wisconsin, WY 2019-2021
Wetland Stream Water Quality Data for West Twin Creek, AK, Allequash Creek, WI, and Big Thompson River, CO, 2010-2020
Water quality and gas fluxes of Interior Alaska (2014-2018)
Instrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Instrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Instrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Panoramic image of ice break up on the Yukon River at Pilot Station, Alaska.
Panoramic image of ice break up on the Yukon River at Pilot Station, Alaska.
Spring breakup on May 21 on the Yukon River at Pilot Station, Alaska.
Spring breakup on May 21 on the Yukon River at Pilot Station, Alaska.
Aquatic ecosystems make a difference in the carbon cycle. The location in this photo is located near Beaver, Alaska approximately 100 miles north of Fairbanks.
Aquatic ecosystems make a difference in the carbon cycle. The location in this photo is located near Beaver, Alaska approximately 100 miles north of Fairbanks.
Fireweed gains a foothold in a burn area of the White Mountains in Alaska.
Fireweed gains a foothold in a burn area of the White Mountains in Alaska.
Eagle was our put-in point for our first synoptic cruise down the Yukon River.
Eagle was our put-in point for our first synoptic cruise down the Yukon River.
Knowledge gaps and opportunities in water-quality drivers of aquatic ecosystem health
Dissolved carbon export by large river systems is influenced by source area heterogeneity
Anthropogenic landcover impacts fluvial dissolved organic matter composition in the Upper Mississippi River Basin
Hydrologic and landscape controls on dissolved organic matter composition across western North American Arctic lakes
The importance of lake emergent aquatic vegetation for estimating Arctic-boreal methane emissions
Spatiotemporal dynamics of CO2 gas exchange from headwater mountain streams
Mountain streams play an important role in the global carbon cycle by transporting, metabolizing, and exchanging carbon they receive from the terrestrial environment. The rates at which these processes occur remain highly uncertain because of a paucity of observations and the difficulty of measuring gas exchange rates in steep, turbulent mountain streams. This uncertainty is compounded by large te
Storm-scale and seasonal dynamics of carbon export from a nested subarctic watershed underlain by permafrost
USGS permafrost research determines the risks of permafrost thaw to biologic and hydrologic resources
Patterns and isotopic composition of greenhouse gases under ice in lakes of interior Alaska
Satellite and airborne remote sensing of gross primary productivity in boreal Alaskan lakes
Hydrologic connectivity determines dissolved organic matter biogeochemistry in northern high-latitude lakes
Constraining dissolved organic matter sources and temporal variability in a model sub-Arctic lake
Science and Products
- Science
Shingobee Headwaters Aquatic Ecosystems Project (SHAEP)
For 43 years, the Shingobee Headwaters Aquatic Ecosystems Project (SHAEP) brought together scientists from the USGS along with students and professors from universities in Minnesota, North Dakota, Wisconsin, and California to study the physical, chemical, and biological processes of lakes, wetlands, and streams at local and watershed scales. In early 2022, The University of Minnesota and Bemidji... - Data
Discrete and high frequency water quality data for Allequash Creek, Wisconsin, WY 2019-2021
This data set is a compilation of discrete and high frequency water quality data from sites on Allequash Creek in Wisconsin, and within the Allequash Creek watershed, for the water years (WY) 2019-2021.Wetland Stream Water Quality Data for West Twin Creek, AK, Allequash Creek, WI, and Big Thompson River, CO, 2010-2020
This dataset includes discrete water quality and discharge data for three streams that flow through wetlands. There are two measurement and sampling locations on each stream: one immediately upstream from the wetland and one immediately downstream from the wetland. Measurements and sample collection occurred in 2010 and 2011 at West Twin Creek, AK; in 2019 and 2020 at Allequash Creek, WI; and in 2Water quality and gas fluxes of Interior Alaska (2014-2018)
This product consists of multiple tabular datasets and associated metadata of water quality information related to rivers, streams, and lakes in the Yukon River watershed between 2014 and 2018. This data release is apart of the National Aeronautics and Space Administration (NASA) funded Arctic-Boreal Vulnerability Experiment (ABoVE) and is an assessment of water quality and greenhouse gas fluxes w - Multimedia
Instrumentation Array, Beaver Creek Near Michael Lake, AlaskaInstrumentation Array, Beaver Creek Near Michael Lake, Alaska
Instrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Instrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Instrumentation Array, Beaver Creek Above Victoria Creek, AlaskaInstrumentation Array, Beaver Creek Above Victoria Creek, AlaskaInstrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Instrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Ice Out on Yukon River, Pilot Station, AlaskaPanoramic image of ice break up on the Yukon River at Pilot Station, Alaska.
Panoramic image of ice break up on the Yukon River at Pilot Station, Alaska.
Ice Out on Yukon River, Pilot Station, AlaskaSpring breakup on May 21 on the Yukon River at Pilot Station, Alaska.
Spring breakup on May 21 on the Yukon River at Pilot Station, Alaska.
Aerial of Beaver Creek, AlaskaAquatic ecosystems make a difference in the carbon cycle. The location in this photo is located near Beaver, Alaska approximately 100 miles north of Fairbanks.
Aquatic ecosystems make a difference in the carbon cycle. The location in this photo is located near Beaver, Alaska approximately 100 miles north of Fairbanks.
Fireweed and Beaver Creek, AlaskaFireweed gains a foothold in a burn area of the White Mountains in Alaska.
Fireweed gains a foothold in a burn area of the White Mountains in Alaska.
Rainbow Over Yukon River, Eagle, Alaska, June 2002Rainbow Over Yukon River, Eagle, Alaska, June 2002Eagle was our put-in point for our first synoptic cruise down the Yukon River.
Eagle was our put-in point for our first synoptic cruise down the Yukon River.
- Publications
Filter Total Items: 35
Knowledge gaps and opportunities in water-quality drivers of aquatic ecosystem health
This report identifies key scientific gaps that limit our ability to predict water quality effects on health of aquatic ecosystems and proposes approaches to address those gaps. Topics considered include (1) coupled nutrient-carbon cycle processes and related ecological-flow-regime drivers of ecosystem health, (2) anthropogenic and geogenic toxin bioexposure, (3) fine sediment drivers of aquatic eDissolved carbon export by large river systems is influenced by source area heterogeneity
Rivers and streams export inorganic and organic carbon derived from contributing landscapes and so downstream carbon fluxes are important quantitative indicators of change in ecosystem function and for the full accounting of terrestrial carbon budgets. Carbon concentration-discharge (C-Q) relationships in rivers provide important information about carbon source and behavior in watersheds and are uAuthorsEdward G. Stets, Robert G. Striegl, Kimberly Wickland, Mark Dornblaser, Sydney FoksAnthropogenic landcover impacts fluvial dissolved organic matter composition in the Upper Mississippi River Basin
Landcover changes have altered the natural carbon cycle; however, most landcover studies focus on either forest conversion to agriculture or urban, rarely both. We present differences in dissolved organic carbon (DOC) concentrations and dissolved organic matter (DOM) molecular composition within Upper Mississippi River Basin low order streams and rivers draining one of three dominant landcovers (fAuthorsDerrick R. Vaughn, Anne M. Kellerman, Kimberly Wickland, Robert G. Striegl, David C. Podgorski, Jon R. Hawkings, Jaap Nienhuis, Mark Dornblaser, Edward G. Stets, Robert G. M. SpencerHydrologic and landscape controls on dissolved organic matter composition across western North American Arctic lakes
Northern high-latitude lakes are hotspots for cycling dissolved organic carbon (DOC) inputs from allochthonous sources to the atmosphere. However, the spatial distribution of lake dissolved organic matter (DOM) is largely unknown across Arctic-boreal regions with respect to the surrounding landscape. We expand on regional studies of northern high-latitude DOM composition by integrating DOC concentAuthorsMartin R. Kurek, Fenix Garcia-Tigreros, Kimberly Wickland, Karen E. Frey, Mark Dornblaser, Robert G. Striegl, Sydney F. Niles, Amy M. McKenna, Pieter J.K Aukes, Ethan D. Kyzivat, Chao Wang, Tamlin M. Pavelsky, Laurence C. Smith, Sherry L. Schiff, David Butman, Robert G.M. SpencerThe importance of lake emergent aquatic vegetation for estimating Arctic-boreal methane emissions
Areas of lakes that support emergent aquatic vegetation emit disproportionately more methane than open water but are under-represented in upscaled estimates of lake greenhouse gas emissions. These shallow areas are typically less than ∼1.5 m deep and can be detected with synthetic aperture radar (SAR). To assess the importance of lake emergent vegetation (LEV) zones to landscape-scale methane emisAuthorsEthan D. Kyzivat, Laurence C. Smith, Fenix Garcia-Tigreros, Chang Huang, Chao Wang, Theodore Langhorst, Jessica V. Fayne, Merritt E. Harlan, Yuta Ishitsuka, Dongmei Feng, Wayana Dolan, Lincoln H. Pitcher, Kimberly Wickland, Mark Dornblaser, Robert G. Striegl, Tamlin M. Pavelsky, David E. Butman, Colin J. GleasonSpatiotemporal dynamics of CO2 gas exchange from headwater mountain streams
Mountain streams play an important role in the global carbon cycle by transporting, metabolizing, and exchanging carbon they receive from the terrestrial environment. The rates at which these processes occur remain highly uncertain because of a paucity of observations and the difficulty of measuring gas exchange rates in steep, turbulent mountain streams. This uncertainty is compounded by large te
AuthorsDavid W. Clow, Robert G. Striegl, Mark DornblaserStorm-scale and seasonal dynamics of carbon export from a nested subarctic watershed underlain by permafrost
Subarctic catchments underlain by permafrost sequester a major stock of frozen organic carbon (C), which may be mobilized as the Arctic warms. Warming can impact C export from thawing soils by altering the depth and timing of runoff related to changing storm and fire regimes and altered soil thaw depths. We investigated C export in a first order headwater stream (West Twin Creek) and its receivingAuthorsJoshua C. Koch, Mark Dornblaser, Rob StrieglUSGS permafrost research determines the risks of permafrost thaw to biologic and hydrologic resources
The U.S. Geological Survey (USGS), in collaboration with university, Federal, Tribal, and independent partners, conducts fundamental research on the distribution, vulnerability, and importance of permafrost in arctic and boreal ecosystems. Scientists, land managers, and policy makers use USGS data to help make decisions for development, wildlife habitat, and other needs. Native villages and citiesAuthorsMark P. Waldrop, Lesleigh Anderson, Mark Dornblaser, Li H. Erikson, Ann E. Gibbs, Nicole M. Herman-Mercer, Stephanie R. James, Miriam C. Jones, Joshua C. Koch, Mary-Cathrine Leewis, Kristen L. Manies, Burke J. Minsley, Neal J. Pastick, Vijay Patil, Frank Urban, Michelle A. Walvoord, Kimberly P. Wickland, Christian ZimmermanByNatural Hazards Mission Area, Water Resources Mission Area, Climate Research and Development Program, Coastal and Marine Hazards and Resources Program, Land Change Science Program, Volcano Hazards Program, Earth Resources Observation and Science (EROS) Center , Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center, Pacific Coastal and Marine Science Center, Volcano Science CenterPatterns and isotopic composition of greenhouse gases under ice in lakes of interior Alaska
Arctic and boreal lake greenhouse gas emissions (GHG) are an important component of regional carbon (C) budgets. Yet the magnitude and seasonal patterns of lake GHG emissions are poorly constrained, because sampling is limited in these remote landscapes, particularly during winter and shoulder seasons. To better define patterns of under ice GHG content (and emissions potential at spring thaw), weAuthorsMadeline O'Dwyer, David Butman, Robert G. Striegl, Mark M. Dornblaser, Kimberly P. Wickland, Catherine D. Kuhn, Matthew J. BogardSatellite and airborne remote sensing of gross primary productivity in boreal Alaskan lakes
In terrestrial and marine ecosystems, remote sensing has been used to estimate gross primary productivity (GPP) for decades, but few applications exist for shallow freshwater ecosystems.Here we show field-based GPP correlates with satellite and airborne lake color across a range of optically and limnologically diverse lakes in interior Alaska. A strong relationship between in situ GPP derived fromAuthorsCatherine D. Kuhn, Matthew J. Bogard, Sarah Ellen Johnston, Aji John, Eric Vermote, Rob Spencer, Mark M. Dornblaser, Kimberly P. Wickland, Robert G. Striegl, David ButmanHydrologic connectivity determines dissolved organic matter biogeochemistry in northern high-latitude lakes
Northern high‐latitude lakes are undergoing climate‐induced changes including shifts in their hydrologic connectivity with terrestrial ecosystems. How this will impact dissolved organic matter (DOM) biogeochemistry remains uncertain. We examined the drivers of DOM composition for lakes in the Yukon Flats Basin in Alaska, an arid region of low relief that is characteristic of over one‐quarter of ciAuthorsSarah Ellen Johnston, Robert G. Striegl, Matthew J. Bogard, Mark M. Dornblaser, David E. Butman, Anne M. Kellerman, Kimberly P. Wickland, David C. Podgorski, Robert G. M. SpencerConstraining dissolved organic matter sources and temporal variability in a model sub-Arctic lake
Circumpolar lakes comprise ~ 1.4 million km2 of arctic and subarctic landscapes and are vulnerable to change in vegetation, permafrost distribution, and hydrological conditions in response to climate warming. However, the composition and cycling of dissolved organic matter (DOM) is poorly understood for these lakes because most are remote and unstudied. The goal of this study was to assess timescaAuthorsSarah Ellen Johnston, Matthew J. Bogard, Jennifer A. Rogers, David Butman, Robert G. Striegl, Mark M. Dornblaser, Robert G. M. Spencer