Blar i forfatter "Bustamante, Paco"

Viser treff 1-3 av 3

    • Contrasting Spatial and Seasonal Trends of Methylmercury Exposure Pathways of Arctic Seabirds: Combination of Large-Scale Tracking and Stable Isotopic Approaches 

      Renedo, Marina; Amouroux, David; Albert, Céline; Bérail, Sylvain; Bråthen, Vegard Sandøy; Gavrilo, Maria; Grémillet, David; Helgason, Hálfdán H.; Jakubas, Dariusz; Mosbech, Anders; Strøm, Hallvard; Tessier, Emmanuel; Wojczulanis-Jakubas, Katarzyna; Bustamante, Paco; Fort, Jérôme (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-16)
      Despite the limited direct anthropogenic mercury (Hg) inputs in the circumpolar Arctic, elevated concentrations of methylmercury (MeHg) are accumulated in Arctic marine biota. However, the MeHg production and bioaccumulation pathways in these ecosystems have not been completely unraveled. We measured Hg concentrations and stable isotope ratios of Hg, carbon, and nitrogen in the feathers and blood ...

    • Trophic and fitness correlates of mercury and organochlorine compound residues in egg-laying Antarctic petrels 

      Carravieri, Alice; Warner, Nicholas Alexander; Herzke, Dorte; Brault-Favrou, Maud; Tarroux, Arnaud; Fort, Jérôme; Bustamante, Paco; Descamps, Sebastien (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-24)
      Understanding the drivers and effects of exposure to contaminants such as mercury (Hg) and organochlorine compounds (OCs) in Antarctic wildlife is still limited. Yet, Hg and OCs have known physiological and fitness effects in animals, with consequences on their populations. Here we measured total Hg (a proxy of methyl-Hg) in blood cells and feathers, and 12 OCs (seven polychlorinated biphenyls, PCBs, ...

    • Using near-infrared reflectance spectroscopy (NIRS) to estimate carbon and nitrogen stable isotope composition in animal tissues 

      Tarroux, Arnaud; Bråthen, Kari Anne; Bustamante, Paco; Descamps, Sebastien (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-05)
      <ol> <li>Stable isotopes analysis (SIA) of carbon and nitrogen provides valuable information about trophic interactions and animal feeding habits.</li> <li>We used near-infrared reflectance spectroscopy (NIRS) and support vector machines (SVM) to develop a model for screening isotopic ratios of carbon and nitrogen (δ<sup>13</sup>C and δ<sup>15</sup>N) in samples from living animals. We applied ...