WebJul 2, 2016 · We sampled clapper rail (Rallus crepitans) feathers from museum specimens collected between 1965 and 2010 to investigate changes in mercury (Hg) availability in coastal marshes of New Hanover County, North Carolina. Stable isotope analysis (δ13C and δ15N) was conducted to control for dietary shifts that may have influenced Hg exposure. … WebFeather Hg concentrations represents dietary MeHg in the blood at the time of feather growth (Furness et al. 1986; Lodenius and Solonen 2013). Blood Hg concentrations during feather growth are influenced by both the recent dietary intake of MeHg and the redistribution of MeHg among tissues (Furness et al. 1986). While feathers provide
Feather mercury increases with feeding at higher trophic levels in …
Web(Hg) concentration in blood and body feathers reflecting short and long-term Hg exposure, respectively. In this work, we investigated how Hg isotopic composition (e.g., δ202Hg and Δ199Hg) of blood and feathers from either seabird chicks (skuas, n = 40) or adults (penguins, n = 62) can accurately provide WebMay 27, 2024 · Moreover, several studies have shown that relatively high proportions of some nonessential heavy metals are stored in body feathers (a major method of detoxification in seabirds), such as Hg ... choralebahar.com
Parameters for comparisons of feather Hg concentrations and …
WebThe common loon (Gavia immer) is a high‐trophic‐level, long‐lived, obligate piscivore at risk from elevated levels of Hg through biomagnification and bioaccumulation. From 1991 to 1996 feather (n = 455) and blood (n = 381) samples from adult loons were collected between June and September in five regions of North America: Alaska, northwestern … WebApr 2, 2024 · Thermal power plants (TPPs) have emerged as a major source of air, water, and soil pollution because of the presence of many toxic metals. The presence of mercury (Hg) in fly ash has proven to be toxic in nature because of its tendency to get bioaccumulated and biomagnified in the food chain. The aim of the present study was to … WebJun 1, 2013 · The species was a major determinant of Hg contamination, with feather Hg concentrations being lower in the oceanic species (king and crested penguins) than in the coastal one (gentoo penguin). In all species however, feather Hg concentrations were higher in adults than in chicks, reflecting the different periods of Hg bioaccumulation in the … chorale arras