Search Results - "Branfireun, Brian A"

Moisture contents regulate peat water-leachable concentrations of methylmercury, inorganic mercury, and dissolved organic matter from boreal peat soils by Sun, Ting, Branfireun, Brian A.

“…Boreal peatlands are “hotspots” of net methylmercury (MeHg) production and may become drier in the future due to climate change. This study investigates a…”
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Rapidly increasing methyl mercury in endangered ivory gull (Pagophila eburnea) feathers over a 130 year record by Bond, Alexander L., Hobson, Keith A., Branfireun, Brian A.

“…Mercury (Hg) is increasing in marine food webs, especially at high latitudes. The bioaccumulation and biomagnification of methyl mercury (MeHg) has serious…”
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Soil water storage, rainfall and runoff relationships in a tropical dry forest catchment by Farrick, Kegan K., Branfireun, Brian A.

“…In forested catchments, the exceedance of rainfall and antecedent water storage thresholds is often required for runoff generation, yet to our knowledge these…”
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Flowpaths, source water contributions and water residence times in a Mexican tropical dry forest catchment by Farrick, Kegan K., Branfireun, Brian A.

“…•We examined runoff generation in a tropical dry forest.•We used a combined hydrometric, isotopic and geochemical approach.•Pre-event water contributions to…”
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Chemical Oxidation and Reduction Pathways of Mercury Relevant to Natural Waters: A Review by Si, Lin, Branfireun, Brian A, Fierro, Jessica

“…Mercury (Hg) pollution in the environment is a global issue and the toxicity of mercury depends on its speciation. Chemical redox reactions of mercury in an…”
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Ground warming releases inorganic mercury and increases net methylmercury production in two boreal peatland types by Sun, Ting, Lindo, Zoë, Branfireun, Brian A.

“…Boreal peatlands are considered sinks for atmospheric mercury (Hg) and are important sources of methylmercury (MeHg) to downstream ecosystems. Climate…”
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Antecedent moisture conditions control mercury and dissolved organic carbon concentration dynamics in a boreal headwater catchment by Oswald, Claire J., Branfireun, Brian A.

“…The fate and transport of mercury (Hg) deposited on forested upland soils depends on the biogeochemical and hydrological processes occurring in the soil…”
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Controls on boreal peat combustion and resulting emissions of carbon and mercury by Kohlenberg, Andrew J, Turetsky, Merritt R, Thompson, Dan K, Branfireun, Brian A, Mitchell, Carl P J

“…Warming in the boreal forest region has already led to changes in the fire regime. This may result in increasing fire frequency or severity in peatlands, which…”
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Climate change drives a shift in peatland ecosystem plant community: Implications for ecosystem function and stability by Dieleman, Catherine M, Branfireun, Brian A, McLaughlin, James W, Lindo, Zoë

“…The composition of a peatland plant community has considerable effect on a range of ecosystem functions. Peatland plant community structure is predicted to…”
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Mercury cycling in freshwater systems - An updated conceptual model by Branfireun, Brian A., Cosio, Claudia, Poulain, Alexandre J., Riise, Gunnhild, Bravo, Andrea G.

“…The widely accepted conceptual model of mercury (Hg) cycling in freshwater lakes (atmospheric deposition and runoff of inorganic Hg, methylation in bottom…”
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Percentage of methylmercury in the muscle tissue of freshwater fish varies with body size and age and among species by Lescord, Gretchen L., Johnston, Thomas A., Branfireun, Brian A., Gunn, John M.

“…It is commonly assumed that most (>95%) of the mercury (Hg) found in fish muscle is the toxic form, methylmercury (MeHg), due to its efficient assimilation and…”
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Methylmercury dynamics at the upland-peatland interface: Topographic and hydrogeochemical controls by Mitchell, Carl P.J, Branfireun, Brian A, Kolka, Randall K

“…Peatlands are important environments for the transformation of atmospherically deposited inorganic mercury into the bioaccumulative form, methylmercury (MeHg),…”
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Speciation and bioavailability of mercury in well-mixed estuarine sediments by Sunderland, Elsie M., Gobas, Frank A.P.C., Heyes, Andrew, Branfireun, Brian A., Bayer, Angelika K., Cranston, Raymond E., Parsons, Michael B.

“…Despite regulations controlling anthropogenic mercury sources in North America, high levels of mercury in coastal fish and shellfish are an ongoing problem in…”
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Global change alters peatland carbon cycling through plant biomass allocation by Tian, Jing, Branfireun, Brian A., Lindo, Zoë

“…Aims Global change is shown to significantly affect the C storage function of peatlands; however, a majority of previous research is focused on a single…”
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Plant mercury accumulation and litter input to a Northern Sedge-dominated Peatland by Sun, Ting, Branfireun, Brian A

“…Plant foliage plays an essential role in accumulating mercury (Hg) from the atmosphere and transferring it to soils in terrestrial ecosystems, and many studies…”
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Dietary exposure to methylmercury affects flight endurance in a migratory songbird by Ma, Yanju, Perez, Cristina R., Branfireun, Brian A., Guglielmo, Christopher G.

“…Although there has been much speculation in the literature that methylmercury (MeHg) exposure can reduce songbird fitness, little is known about its effects on…”
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Effects of sublethal methylmercury and food stress on songbird energetic performance: metabolic rates, molt and feather quality by Bottini, Claire L J, Whiley, Rebecca E, Branfireun, Brian A, MacDougall-Shackleton, Scott A

“…Organisms regularly adjust their physiology and energy balance in response to predictable seasonal environmental changes. Stressors and contaminants have the…”
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Simulated climate warming increases plant community heterogeneity in two types of boreal peatlands in north–central Canada by Lyons, Caitlyn L., Branfireun, Brian A., McLaughlin, Jim, Lindo, Zoë

“…Questions Climate warming has been demonstrated to shift peatland plant community composition from Sphagnum mosses to vascular plants in Sphagnum‐dominated…”
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Estimates, spatial variability, and environmental drivers of mercury biomagnification rates through lake food webs in the Canadian subarctic by Moslemi-Aqdam, Mehdi, Low, George, Low, Mike, Laird, Brian D., Branfireun, Brian A., Swanson, Heidi K.

“…Biomagnification of mercury (Hg) through lake food webs is understudied in rapidly changing northern regions, where wild-caught subsistence fish are critical…”
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Northern peatland carbon dynamics driven by plant growth form — the role of graminoids by Dieleman, Catherine M., Branfireun, Brian A., Lindo, Zoë

“…Aims Plant growth forms can influence carbon cycling, particularly in carbon-rich ecosystems like northern peatlands; however, mechanistic evidence of this…”
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