Persistent pollutants exceed toxic thresholds in a freshwater top predator decades after legislative control

Persistent organic pollution in a high-Arctic top predator: sex-dependent thresholds in adult survival.

In long-lived species, any negative effect of pollution on adult survival may pose serious hazards to breeding populations. In this study, we measured concentrations of various organochlorines (OCs) (polychlorinated biphenyl and OC pesticides) in the blood of a large number of adult glaucous gulls (Larus hyperboreus) breeding on Bjørnøya (Bear Island) in the Norwegian Arctic, and modelled their...

Persistent toxic chemicals: more than Stockholm persistent organic pollutants.

Schafer and Kegley bring up the important issue of excessive chemicals exposure of children. However, they do not consider in depth the "cumulative and simultaneous exposures faced by children, (.) moving beyond the chemical-by-chemical approach of the past", as quoted from the US Environmental Protection Agency national agenda to protect children from environmental health threats. Existing evi...

Control Strategy For Toxic Pollutants

Effects of climate change on trait-based dynamics of a top predator in freshwater ecosystems.

Predicted universal responses of ectotherms to climate warming include increased maximum population growth rate and changes in body size through the temperature-size rule. However, the mechanisms that would underlie these predicted responses are not clear. Many studies have focused on proximate mechanisms of physiological processes affecting individual growth. One can also consider ultimate mec...

Criteria air pollutants and toxic air pollutants.

This review presents a brief overview of the health effects and exposures of two criteria pollutants--ozone and particulate matter--and two toxic air pollutants--benzene and formaldehyde. These pollutants were selected from the six criteria pollutants and from the 189 toxic air pollutants on the basis of their prevalence in the United States, their physicochemical behavior, and the magnitude of...