Search Results - "Macdonald, Robie"

The influence of global climate change on the environmental fate of persistent organic pollutants: A review with emphasis on the Northern Hemisphere and the Arctic as a receptor by Ma, Jianmin, Hung, Hayley, Macdonald, Robie W.

“…Following worldwide bans and restrictions on the use of many persistent organic pollutants (POPs) from the late 1970s, their regional and global distributions…”
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The distribution and trends of persistent organic pollutants and mercury in marine mammals from Canada's Eastern Arctic by Brown, Tanya M., Macdonald, Robie W., Muir, Derek C.G., Letcher, Robert J.

“…Arctic contaminant research in the marine environment has focused on organohalogen compounds and mercury mainly because they are bioaccumulative, persistent…”
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Geoengineering with seagrasses: is credit due where credit is given? by Johannessen, Sophia C, Macdonald, Robie W

“…Blue carbon, the carbon fixed by vegetated coastal ecosystems including seagrasses, is reported to have a large potential to sequester atmospheric carbon…”
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Source and transport of terrigenous organic matter in the upper Yukon River: Evidence from isotope (δ13C, Δ14C, and δ15N) composition of dissolved, colloidal, and particulate phases by Guo, Laodong, Macdonald, Robie W.

“…Natural organic matter was collected from the upper Yukon River and size fractionated into the <1 kDa low‐molecular‐weight dissolved (LMW‐DOC), colloidal (COC,…”
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Vulnerability of a semienclosed estuarine sea to ocean acidification in contrast with hypoxia by Ianson, Debby, Allen, Susan E., Moore‐Maley, Benjamin L., Johannessen, Sophia C., Macdonald, and Robie W.

“…The Strait of Georgia (SoG) is a large semienclosed estuary that spatially dominates the Salish Sea on the North American Pacific coast. The region is well…”
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Subsurface seawater methylmercury maximum explains biotic mercury concentrations in the Canadian Arctic by Wang, Kang, Munson, Kathleen M., Beaupré-Laperrière, Alexis, Mucci, Alfonso, Macdonald, Robie W., Wang, Feiyue

“…Mercury (Hg) is a contaminant of major concern in Arctic marine ecosystems. Decades of Hg observations in marine biota from across the Canadian Arctic show…”
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Decabrominated Diphenyl Ethers (BDE-209) in Chinese and Global Air: Levels, Gas/Particle Partitioning, and Long-Range Transport: Is Long-Range Transport of BDE-209 Really Governed by the Movement of Particles? by Li, Yi-Fan, Qiao, Li-Na, Ren, Nan-Qi, Sverko, Ed, Mackay, Donald, Macdonald, Robie W

“…In this paper, we report air concentrations of BDE-209 in both gas- and particle-phases across China. The annual mean concentrations of BDE-209 were from below…”
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Steady-State Based Model of Airborne Particle/Gas and Settled Dust/Gas Partitioning for Semivolatile Organic Compounds in the Indoor Environment by Li, Hai-Ling, Yang, Pu-Fei, Liu, Li-Yan, Gong, Bei-Bei, Zhang, Zi-Feng, Ma, Wan-Li, Macdonald, Robie W., Nikolaev, Anatoly N., Li, Yi-Fan

“…Indoor semivolatile organic compounds (SVOCs), present in the air, airborne particles, settled dust, and other indoor surfaces, can enter the human body…”
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Mobilization pathways of organic carbon from permafrost to arctic rivers in a changing climate by Guo, Laodong, Ping, Chien-Lu, Macdonald, Robie W.

“…Arctic warming may cause the release of vast amounts of soil organic carbon (SOC) from permafrost, which will manifest itself in the fluxes and composition of…”
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Polycyclic aromatic compounds (PACs) in the Canadian environment: A review of sampling techniques, strategies and instrumentation by Ahad, Jason M.E., Macdonald, Robie W., Parrott, Joanne L., Yang, Zeyu, Zhang, Yifeng, Siddique, Tariq, Kuznetsova, Alsu, Rauert, Cassandra, Galarneau, Elisabeth, Studabaker, William B., Evans, Marlene, McMaster, Mark E., Shang, Dayue

“…A wide variety of sampling techniques and strategies are needed to analyze polycyclic aromatic compounds (PACs) and interpret their distributions in various…”
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Slopes and intercepts from log-log correlations of gas/particle quotient and octanol-air partition coefficient (vapor-pressure) for semi-volatile organic compounds: I. Theoretical analysis by Li, Yi-Fan, Qiao, Li-Na, Macdonald, Robie W.

“…Gas/particle partitioning governs the transport and fate of semi-volatile organic compounds (SVOCs) released to the atmosphere. The partition quotient of…”
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Sources and export fluxes of inorganic and organic carbon and nutrient species from the seasonally ice-covered Yukon River by Guo, Laodong, Cai, Yihua, Belzile, Claude, Macdonald, Robie W.

“…Climate and environmental changes are having profound impacts on Arctic river basins, but the biogeochemical response remains poorly understood. To examine the…”
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Particle/gas partitioning for semi-volatile organic compounds (SVOCs) in level III multimedia fugacity models: Both gaseous and particulate emissions by Qin, Meng, Yang, Pu-Fei, Hu, Peng-Tuan, Hao, Shuai, Macdonald, Robie W., Li, Yi-Fan

“…Multimedia fugacity models have long been used to address the fate of toxic organic chemical emissions by providing a quantitative account of the sources,…”
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Sensitivity of the carbon cycle in the Arctic to climate change by McGuire, A. David, Anderson, Leif G, Christensen, Torben R, Dallimore, Scott, Guo, Laodong, Hayes, Daniel J, Heimann, Martin, Lorenson, Thomas D, Macdonald, Robie W, Roulet, Nigel

“…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…”
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Gas/particle partitioning of semi-volatile organic compounds in the atmosphere: Transition from unsteady to steady state by Li, Yi-Fan, Qiao, Li-Na, Ren, Nan-Qi, Macdonald, Robie W., Kannan, Kurunthachalam

“…We derive differential equations to determine the kinetics of gas/particle partitioning of semi-volatile organic compounds (SVOCs). These equations model the…”
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Interactions between climate change and contaminants by Schiedek, Doris, Sundelin, Brita, Readman, James W., Macdonald, Robie W.

“…There is now general consensus that climate change is a global threat and a challenge for the 21st century. More and more information is available…”
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Manganese Sources and Sinks in the Arctic Ocean with Reference to Periodic Enrichments in Basin Sediments by Macdonald, Robie W, Gobeil, Charles

“…Between 1990 and 2007, twenty-nine box cores were recovered within the Arctic Ocean spanning shelf, slope and basin locations, and analyzed for aluminum (Al),…”
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Alkane and PAH biomarkers as tracers of terrigenous organic carbon in Arctic Ocean sediments by Yunker, Mark B., Macdonald, Robie W., Snowdon, Lloyd R., Fowler, Brian R.

“…► Terrigenous organic flux to basin sediment responds to glacial–interglacial sea level. ► Lena River basin coals main source for petrogenic hydrocarbons in…”
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Particle/gas partitioning for semi-volatile organic compounds (SVOCs) in Level III multimedia fugacity models: Gaseous emissions by Li, Yi-Fan, Qin, Meng, Yang, Pu-Fei, Hao, Shuai, Macdonald, Robie W.

“…Atmospheric transport is a global-scale process that moves semi-volatile organic compounds (SVOCs) rapidly from source regions to remote locations, where these…”
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Total and Methylated Mercury in the Beaufort Sea: The Role of Local and Recent Organic Remineralization by Wang, Feiyue, Macdonald, Robie W, Armstrong, Debbie A, Stern, Gary A

“…Mercury is a major contaminant in the Arctic marine ecosystem. While extensive studies have been conducted on mercury in the Arctic’s atmosphere and biota, far…”
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