Increased concentrations of dissolved trace metals and organic carbon during snowmelt in rivers of the alaskan arctic

Rember, Robert; Trefry, John H.

doi:10.1016/s0016-7037(03)00458-7

Cited by 135 publications

(116 citation statements)

References 25 publications

Supporting

Mentioning

101

Contrasting

Order By: Relevance

“…The range was higher than the published range of 2-4% (Rember andTrefry 2004 andWang et al 1998). The Ishikari river showed the lowest and the Kushiro river the highest in POC contents.…”

Section: Resultscontrasting

confidence: 55%

Transport behavior of particulate organic matter in river water during snow melting in the Ishikari, Tokachi, Teshio and Kushiro Rivers, Japan

Alam

Nagao

Quayum

2013

J. Asiat. Soc. Bangladesh, Sci.

View full text Add to dashboard Cite

show abstract

“…The range was higher than the published range of 2-4% (Rember andTrefry 2004 andWang et al 1998). The Ishikari river showed the lowest and the Kushiro river the highest in POC contents.…”

Section: Resultscontrasting

confidence: 55%

Transport behavior of particulate organic matter in river water during snow melting in the Ishikari, Tokachi, Teshio and Kushiro Rivers, Japan

Alam

Nagao

Quayum

2013

J. Asiat. Soc. Bangladesh, Sci.

View full text Add to dashboard Cite

show abstract

“…Based on this water flux and a discharge-weighted average DOC concentration of 9.4 ppm, we estimate the total export fluxes of C from rivers to the Arctic Ocean to be 43 Tg C/yr as DIC, Romankevich (1984), Gordeev et al (1996), Gordeev and Rachold (2004), Kohler et al (2003), Rachold et al (2004), and Vetrov and Romankevich (2004). Additional data are complied from Leenheer (1982), Rember and Trefry (2004), Striegl et al (2005), and Guo and Macdonald (2006) for North America rivers; and from Finlay et al (2006) for Kolyma River. DIC data are complied from Telang et al (1991), Cauwet and Sidorov (1996), Vetrov and Romankevich (2004), and Guo et al (2007).…”

Section: Lateral Fluxes and Fates Of Doc Dic Poc And Chmentioning

confidence: 99%

Sensitivity of the carbon cycle in the Arctic to climate change

McGuire

Anderson

Christensen

et al. 2009

Ecological Monographs

879

784

View full text Add to dashboard Cite

Abstract. The recent warming in the Arctic is affecting a broad spectrum of physical, ecological, and human/cultural systems that may be irreversible on century time scales and have the potential to cause rapid changes in the earth system. The response of the carbon cycle of the Arctic to changes in climate is a major issue of global concern, yet there has not been a comprehensive review of the status of the contemporary carbon cycle of the Arctic and its response to climate change. This review is designed to clarify key uncertainties and vulnerabilities in the response of the carbon cycle of the Arctic to ongoing climatic change. While it is clear that there are substantial stocks of carbon in the Arctic, there are also significant uncertainties associated with the magnitude of organic matter stocks contained in permafrost and the storage of methane hydrates beneath both subterranean and submerged permafrost of the Arctic. In the context of the global carbon cycle, this review demonstrates that the Arctic plays an important role in the global dynamics of both CO 2 and CH 4 . Studies suggest that the Arctic has been a sink for atmospheric CO 2 of between 0 and 0.8 Pg C/yr in recent decades, which is between 0% and 25% of the global net land/ocean flux during the 1990s. The Arctic is a substantial source of CH 4 to the atmosphere (between 32 and 112 Tg CH 4 /yr), primarily because of the large area of wetlands throughout the region. Analyses to date indicate that the sensitivity of the carbon cycle of the Arctic during the remainder of the 21st century is highly uncertain. To improve the capability to assess the sensitivity of the carbon cycle of the Arctic to projected climate change, we recommend that (1) integrated regional studies be conducted to link observations of carbon dynamics to the processes that are likely to influence those dynamics, and (2) the understanding gained from these integrated studies be incorporated into both uncoupled and fully coupled carbon-climate modeling efforts.

show abstract

“…Roughly 60% of the annual DOC export from arctic and sub-arctic rivers occurs within the two months following snow melt and ice breakup Raymond et al, 2007), and this carbon is of modern age (Guo and Macdonald, 2006;Neff et al, 2006 water loads of other nutrients (like nitrogen) and trace metals (Rember and Trefry, 2004) as melt water interacts with surface soil and vegetation (McNamara et al 2008;Frey and McClelland, 2009). The timing of spring melt has been moving earlier (Stone et al, 2002) but the potential ramifications of an earlier melt for nutrient export f luxes or composition are largely unknown.…”

Section: Observed Carbon F Luxes From Terrestrial Ecosystems As a Resmentioning

confidence: 99%

Sources and sinks of carbon in boreal ecosystems of interior Alaska: A review

Douglas

Jones

Hiemstra

et al. 2014

Elementa: Science of the Anthropocene

View full text Add to dashboard Cite

Boreal ecosystems store large quantities of carbon but are increasingly vulnerable to carbon loss due to disturbance and climate warming. The boreal region in Alaska and Canada, largely underlain by discontinuous permafrost, presents a challenging landscape for itemizing carbon sources and sinks in soil and vegetation. The roles of fire, forest succession, and the presence (or absence) of permafrost on carbon cycle, vegetation, and hydrologic processes have been the focus of multidisciplinary research in boreal ecosystems for the past 20 years. However, projections of a warming future climate, an increase in fire severity and extent, and the potential degradation of permafrost could lead to major landscape and carbon cycle changes over the next 20 to 50 years. To assist land managers in interior Alaska in adapting and managing for potential changes in the carbon cycle we developed this review paper by incorporating an overview of the climate, ecosystem processes, vegetation, and soil regimes. Our objective is to provide a synthesis of the most current carbon storage estimates and measurements to guide policy and land management decisions on how to best manage carbon sources and sinks. We surveyed estimates of aboveground and belowground carbon stocks for interior Alaska boreal ecosystems and summarized methane and carbon dioxide f luxes. These data have been converted into similar units to facilitate comparison across ecosystem compartments. We identify potential changes in the carbon cycle with climate change and human disturbance. A novel research question is how compounding disturbances affect carbon sources and sinks associated with boreal ecosystem processes. Finally, we provide recommendations to address the challenges facing land managers in efforts to manage carbon cycle processes. The results of this study can be used for carbon cycle management in other locations within the boreal biome which encompasses a broad distribution from 45° to 83° north.

show abstract

Increased concentrations of dissolved trace metals and organic carbon during snowmelt in rivers of the alaskan arctic

Cited by 135 publications

References 25 publications

Transport behavior of particulate organic matter in river water during snow melting in the Ishikari, Tokachi, Teshio and Kushiro Rivers, Japan

Transport behavior of particulate organic matter in river water during snow melting in the Ishikari, Tokachi, Teshio and Kushiro Rivers, Japan

Sensitivity of the carbon cycle in the Arctic to climate change

Sources and sinks of carbon in boreal ecosystems of interior Alaska: A review

Contact Info

Product

Resources

About