Mark M Dornblaser (Former Employee)
Science and Products
Filter Total Items: 40
Emissions of carbon dioxide and methane from a headwater stream network of interior Alaska Emissions of carbon dioxide and methane from a headwater stream network of interior Alaska
Boreal ecosystems store significant quantities of organic carbon (C) that may be vulnerable to degradation as a result of a warming climate. Despite their limited coverage on the landscape, streams play a significant role in the processing, gaseous emission, and downstream export of C, and small streams are thought to be particularly important because of their close connection with the...
Authors
John T. Crawford, Robert G. Striegl, Kimberly P. Wickland, Mark M. Dornblaser, Emily H. Stanley
Chromophoric dissolved organic matter export from U.S. rivers Chromophoric dissolved organic matter export from U.S. rivers
Chromophoric dissolved organic matter (CDOM) fluxes and yields from 15 major U.S. rivers draining an assortment of terrestrial biomes are presented. A robust relationship between CDOM and dissolved organic carbon (DOC) loads is established (e.g., a350 versus DOC; r2 = 0.96, p
Authors
Robert G. M. Spencer, George R. Aiken, Mark M. Dornblaser, Kenna D. Butler, R. Max Holmes, Greg Fiske, Paul J. Mann, Aron Stubbins
Biodegradability of dissolved organic carbon in the Yukon River and its tributaries: Seasonality and importance of inorganic nitrogen Biodegradability of dissolved organic carbon in the Yukon River and its tributaries: Seasonality and importance of inorganic nitrogen
Northern high-latitude rivers transport large amounts of terrestrially derived dissolved organic matter (DOM) from boreal and arctic ecosystems to coastal areas and oceans. Current knowledge of the biodegradability of DOM in these rivers is limited, particularly for large rivers discharging to the Arctic Ocean. We conducted a seasonally comprehensive study of biodegradable dissolved...
Authors
Kimberly P. Wickland, George R. Aiken, Kenna D. Butler, Mark M. Dornblaser, RGM Spencer, Robert G. Striegl
Carbon dioxide and methane emissions from the Yukon River system Carbon dioxide and methane emissions from the Yukon River system
Carbon dioxide (CO2) and methane (CH4) emissions are important, but poorly quantified, components of riverine carbon (C) budgets. This is largely because the data needed for gas flux calculations are sparse and are spatially and temporally variable. Additionally, the importance of C gas emissions relative to lateral C exports is not well known because gaseous and aqueous fluxes are not...
Authors
Robert G. Striegl, Mark M. Dornblaser, Cory P. McDonald, Jennifer R. Rover, Edward G. Stets
Mercury export from the Yukon River Basin and potential response to a changing climate Mercury export from the Yukon River Basin and potential response to a changing climate
We measured mercury (Hg) concentrations and calculated export and yield from the Yukon River Basin (YRB) to quantify Hg flux from a large, permafrost-dominated, high-latitude watershed. Exports of Hg averaged 4400 kg Hg yr-1. The average annual yield for the YRB during the study period was 5.17 μg m-2 yr-1, which is 3–32 times more than Hg yields reported for 8 other major northern...
Authors
Paul F. Schuster, Robert G. Striegl, George R. Aiken, David P. Krabbenhoft, John F. DeWild, Kenna D. Butler, Ben Kamark, Mark Dornblaser
Utilizing chromophoric dissolved organic matter measurements to derive export and reactivity of dissolved organic carbon exported to the Arctic Ocean: A case study of the Yukon River, Alaska Utilizing chromophoric dissolved organic matter measurements to derive export and reactivity of dissolved organic carbon exported to the Arctic Ocean: A case study of the Yukon River, Alaska
[1] The quality and quantity of dissolved organic matter (DOM) exported by Arctic rivers is known to vary with hydrology and this exported material plays a fundamental role in the biogeochemical cycling of carbon at high latitudes. We highlight the potential of optical measurements to examine DOM quality across the hydrograph in Arctic rivers. Furthermore, we establish chromophoric DOM...
Authors
R.G.M. Spencer, G. R. Aiken, K.D. Butler, M.M. Dornblaser, Robert G. Striegl, P.J. Hernes
Suspended sediment and carbonate transport in the Yukon River Basin, Alaska: Fluxes and potential future responses to climate change Suspended sediment and carbonate transport in the Yukon River Basin, Alaska: Fluxes and potential future responses to climate change
Loads and yields of suspended sediment and carbonate were measured and modeled at three locations on the Yukon, Tanana, and Porcupine Rivers in Alaska during water years 2001–2005 (1 October 2000 to 30 September 2005). Annual export of suspended sediment and carbonate upstream from the Yukon Delta averaged 68 Mt a−1 and 387 Gg a−1, respectively, with 50% of the suspended sediment load...
Authors
Mark M. Dornblaser, Robert G. Striegl
Water and sediment quality in the Yukon River and its tributaries between Atlin, British Columbia, Canada, and Eagle, Alaska, USA, 2004 Water and sediment quality in the Yukon River and its tributaries between Atlin, British Columbia, Canada, and Eagle, Alaska, USA, 2004
The Yukon River basin is the fourth largest watershed in North America at 855,300 square kilometers (km2). Approximately 126,000 people live within the basin and depend on the Yukon River and its tributaries for drinking water, commerce, subsistence and recreational fish and game resources. Climate warming in the Arctic and Sub arctic regions encompassing the Yukon basin has recently...
Authors
Douglas R. Halm, Mark M. Dornblaser
Carbon export and cycling by the Yukon, Tanana, and Porcupine rivers, Alaska, 2001-2005 Carbon export and cycling by the Yukon, Tanana, and Porcupine rivers, Alaska, 2001-2005
Loads and yields of dissolved and particulate organic and inorganic carbon (DOC, POC, DIC, PIC) were measured and modeled at three locations on the Yukon River (YR) and on the Tanana and Porcupine rivers (TR, PR) in Alaska during 2001–2005. Total YR carbon export averaged 7.8 Tg C yr−1, 30% as OC and 70% as IC. Total C yields (0.39–1.03 mol C m−2 yr−1) were proportional to water yields...
Authors
Robert G. Striegl, Mark M. Dornblaser, George R. Aiken, Kimberly P. Wickland, Peter A. Raymond
Water and sediment quality of the Yukon River and its tributaries, from Eagle to St. Marys, Alaska, 2002-2003 Water and sediment quality of the Yukon River and its tributaries, from Eagle to St. Marys, Alaska, 2002-2003
The Yukon River basin is a vast and diverse ecosystem covering more than 330,000 square miles, an area larger than Texas. Approximately 126,000 people live within the basin and depend on the Yukon River and its tributaries for drinking water, commerce, and recreational and subsistence fish and game resources. Much of the Yukon River basin is underlain by permafrost containing vast...
Authors
Mark M. Dornblaser, Douglas R. Halm
Water and sediment quality in the Yukon River basin, Alaska, during water year 2003 Water and sediment quality in the Yukon River basin, Alaska, during water year 2003
No abstract available.
Authors
Paul F. Schuster
Water and sediment quality in the Yukon River basin, Alaska, during water year 2002 Water and sediment quality in the Yukon River basin, Alaska, during water year 2002
No abstract available.
Authors
Paul F. Schuster
Science and Products
Filter Total Items: 40
Emissions of carbon dioxide and methane from a headwater stream network of interior Alaska Emissions of carbon dioxide and methane from a headwater stream network of interior Alaska
Boreal ecosystems store significant quantities of organic carbon (C) that may be vulnerable to degradation as a result of a warming climate. Despite their limited coverage on the landscape, streams play a significant role in the processing, gaseous emission, and downstream export of C, and small streams are thought to be particularly important because of their close connection with the...
Authors
John T. Crawford, Robert G. Striegl, Kimberly P. Wickland, Mark M. Dornblaser, Emily H. Stanley
Chromophoric dissolved organic matter export from U.S. rivers Chromophoric dissolved organic matter export from U.S. rivers
Chromophoric dissolved organic matter (CDOM) fluxes and yields from 15 major U.S. rivers draining an assortment of terrestrial biomes are presented. A robust relationship between CDOM and dissolved organic carbon (DOC) loads is established (e.g., a350 versus DOC; r2 = 0.96, p
Authors
Robert G. M. Spencer, George R. Aiken, Mark M. Dornblaser, Kenna D. Butler, R. Max Holmes, Greg Fiske, Paul J. Mann, Aron Stubbins
Biodegradability of dissolved organic carbon in the Yukon River and its tributaries: Seasonality and importance of inorganic nitrogen Biodegradability of dissolved organic carbon in the Yukon River and its tributaries: Seasonality and importance of inorganic nitrogen
Northern high-latitude rivers transport large amounts of terrestrially derived dissolved organic matter (DOM) from boreal and arctic ecosystems to coastal areas and oceans. Current knowledge of the biodegradability of DOM in these rivers is limited, particularly for large rivers discharging to the Arctic Ocean. We conducted a seasonally comprehensive study of biodegradable dissolved...
Authors
Kimberly P. Wickland, George R. Aiken, Kenna D. Butler, Mark M. Dornblaser, RGM Spencer, Robert G. Striegl
Carbon dioxide and methane emissions from the Yukon River system Carbon dioxide and methane emissions from the Yukon River system
Carbon dioxide (CO2) and methane (CH4) emissions are important, but poorly quantified, components of riverine carbon (C) budgets. This is largely because the data needed for gas flux calculations are sparse and are spatially and temporally variable. Additionally, the importance of C gas emissions relative to lateral C exports is not well known because gaseous and aqueous fluxes are not...
Authors
Robert G. Striegl, Mark M. Dornblaser, Cory P. McDonald, Jennifer R. Rover, Edward G. Stets
Mercury export from the Yukon River Basin and potential response to a changing climate Mercury export from the Yukon River Basin and potential response to a changing climate
We measured mercury (Hg) concentrations and calculated export and yield from the Yukon River Basin (YRB) to quantify Hg flux from a large, permafrost-dominated, high-latitude watershed. Exports of Hg averaged 4400 kg Hg yr-1. The average annual yield for the YRB during the study period was 5.17 μg m-2 yr-1, which is 3–32 times more than Hg yields reported for 8 other major northern...
Authors
Paul F. Schuster, Robert G. Striegl, George R. Aiken, David P. Krabbenhoft, John F. DeWild, Kenna D. Butler, Ben Kamark, Mark Dornblaser
Utilizing chromophoric dissolved organic matter measurements to derive export and reactivity of dissolved organic carbon exported to the Arctic Ocean: A case study of the Yukon River, Alaska Utilizing chromophoric dissolved organic matter measurements to derive export and reactivity of dissolved organic carbon exported to the Arctic Ocean: A case study of the Yukon River, Alaska
[1] The quality and quantity of dissolved organic matter (DOM) exported by Arctic rivers is known to vary with hydrology and this exported material plays a fundamental role in the biogeochemical cycling of carbon at high latitudes. We highlight the potential of optical measurements to examine DOM quality across the hydrograph in Arctic rivers. Furthermore, we establish chromophoric DOM...
Authors
R.G.M. Spencer, G. R. Aiken, K.D. Butler, M.M. Dornblaser, Robert G. Striegl, P.J. Hernes
Suspended sediment and carbonate transport in the Yukon River Basin, Alaska: Fluxes and potential future responses to climate change Suspended sediment and carbonate transport in the Yukon River Basin, Alaska: Fluxes and potential future responses to climate change
Loads and yields of suspended sediment and carbonate were measured and modeled at three locations on the Yukon, Tanana, and Porcupine Rivers in Alaska during water years 2001–2005 (1 October 2000 to 30 September 2005). Annual export of suspended sediment and carbonate upstream from the Yukon Delta averaged 68 Mt a−1 and 387 Gg a−1, respectively, with 50% of the suspended sediment load...
Authors
Mark M. Dornblaser, Robert G. Striegl
Water and sediment quality in the Yukon River and its tributaries between Atlin, British Columbia, Canada, and Eagle, Alaska, USA, 2004 Water and sediment quality in the Yukon River and its tributaries between Atlin, British Columbia, Canada, and Eagle, Alaska, USA, 2004
The Yukon River basin is the fourth largest watershed in North America at 855,300 square kilometers (km2). Approximately 126,000 people live within the basin and depend on the Yukon River and its tributaries for drinking water, commerce, subsistence and recreational fish and game resources. Climate warming in the Arctic and Sub arctic regions encompassing the Yukon basin has recently...
Authors
Douglas R. Halm, Mark M. Dornblaser
Carbon export and cycling by the Yukon, Tanana, and Porcupine rivers, Alaska, 2001-2005 Carbon export and cycling by the Yukon, Tanana, and Porcupine rivers, Alaska, 2001-2005
Loads and yields of dissolved and particulate organic and inorganic carbon (DOC, POC, DIC, PIC) were measured and modeled at three locations on the Yukon River (YR) and on the Tanana and Porcupine rivers (TR, PR) in Alaska during 2001–2005. Total YR carbon export averaged 7.8 Tg C yr−1, 30% as OC and 70% as IC. Total C yields (0.39–1.03 mol C m−2 yr−1) were proportional to water yields...
Authors
Robert G. Striegl, Mark M. Dornblaser, George R. Aiken, Kimberly P. Wickland, Peter A. Raymond
Water and sediment quality of the Yukon River and its tributaries, from Eagle to St. Marys, Alaska, 2002-2003 Water and sediment quality of the Yukon River and its tributaries, from Eagle to St. Marys, Alaska, 2002-2003
The Yukon River basin is a vast and diverse ecosystem covering more than 330,000 square miles, an area larger than Texas. Approximately 126,000 people live within the basin and depend on the Yukon River and its tributaries for drinking water, commerce, and recreational and subsistence fish and game resources. Much of the Yukon River basin is underlain by permafrost containing vast...
Authors
Mark M. Dornblaser, Douglas R. Halm
Water and sediment quality in the Yukon River basin, Alaska, during water year 2003 Water and sediment quality in the Yukon River basin, Alaska, during water year 2003
No abstract available.
Authors
Paul F. Schuster
Water and sediment quality in the Yukon River basin, Alaska, during water year 2002 Water and sediment quality in the Yukon River basin, Alaska, during water year 2002
No abstract available.
Authors
Paul F. Schuster