Environmental stressors that impact habitat and wildlife species include: abiotic factors (for example, land use, temperature); soil, air, and water quality (for example, eutrophication, contaminants); and disturbance (for example, fire, drought, hurricanes, species invasions). Understanding how these stressors impact ecosystems is critical to conservation and management.
Chemical and isotopic techniques are very useful for improving our mechanistic understanding of the role of environmental stressors on ecosystems and wildlife species. Studies within this project generally emphasize animal fitness impacts related to stressors, such as food web disruptions, changes in resource quantity and quality, trophic transfer of non-essential elements, and the effects of landscape disturbances.
Tracer data can be used qualitatively and quantitatively to estimate effects, assess risk, and inform management actions. Such approaches are also very amenable to a range of temporal and spatial scales, where previous studies have ranged from discrete river drainages to oceanic basins and retrospective study designs that rely on environmental archives or museum specimens.
Geology, Geophysics, and Geochemistry Stable Isotope Laboratory (GSIL)
Below are publications associated with this project.
Methylmercury production in sediment from agricultural and non-agricultural wetlands in the Yolo Bypass, California, USA Methylmercury production in sediment from agricultural and non-agricultural wetlands in the Yolo Bypass, California, USA
Selenium and mercury concentrations in harbor seals (Phoca vitulina) from central California: Health implications in an urbanized estuary Selenium and mercury concentrations in harbor seals (Phoca vitulina) from central California: Health implications in an urbanized estuary
Mercury cycling in agricultural and managed wetlands, Yolo Bypass, California: Spatial and seasonal variations in water quality Mercury cycling in agricultural and managed wetlands, Yolo Bypass, California: Spatial and seasonal variations in water quality
Mercury cycling in agricultural and managed wetlands: a synthesis of methylmercury production, hydrologic export, and bioaccumulation from an integrated field study Mercury cycling in agricultural and managed wetlands: a synthesis of methylmercury production, hydrologic export, and bioaccumulation from an integrated field study
Mercury in gray wolves (Canis lupus) in Alaska: Increased exposure through consumption of marine prey Mercury in gray wolves (Canis lupus) in Alaska: Increased exposure through consumption of marine prey
Mercury cycling in agricultural and managed wetlands of California: experimental evidence of vegetation-driven changes in sediment biogeochemistry and methylmercury production Mercury cycling in agricultural and managed wetlands of California: experimental evidence of vegetation-driven changes in sediment biogeochemistry and methylmercury production
Mercury cycling in agricultural and managed wetlands of California: seasonal influences of vegetation on mercury methylation, storage, and transport Mercury cycling in agricultural and managed wetlands of California: seasonal influences of vegetation on mercury methylation, storage, and transport
Methylmercury cycling, bioaccumulation, and export from agricultural and non-agricultural wetlands in the Yolo Bypass Methylmercury cycling, bioaccumulation, and export from agricultural and non-agricultural wetlands in the Yolo Bypass
Environmental stressors that impact habitat and wildlife species include: abiotic factors (for example, land use, temperature); soil, air, and water quality (for example, eutrophication, contaminants); and disturbance (for example, fire, drought, hurricanes, species invasions). Understanding how these stressors impact ecosystems is critical to conservation and management.
Chemical and isotopic techniques are very useful for improving our mechanistic understanding of the role of environmental stressors on ecosystems and wildlife species. Studies within this project generally emphasize animal fitness impacts related to stressors, such as food web disruptions, changes in resource quantity and quality, trophic transfer of non-essential elements, and the effects of landscape disturbances.
Tracer data can be used qualitatively and quantitatively to estimate effects, assess risk, and inform management actions. Such approaches are also very amenable to a range of temporal and spatial scales, where previous studies have ranged from discrete river drainages to oceanic basins and retrospective study designs that rely on environmental archives or museum specimens.
Geology, Geophysics, and Geochemistry Stable Isotope Laboratory (GSIL)
Below are publications associated with this project.