Is the LCP Superfund Site an Ecological Trap for Clapper Rails?

Abstract

Abstract Rallus longirostris (Clapper Rail) is considered a good indicator species for toxicants because of its strong site fidelity and predictable diet of benthic organisms. High levels of the rare PCB Aroclor 1268 have been found in Clapper Rail adults, chicks, and eggs from the marshes associated with the Linden Chemical Plant (LCP) in Brunswick, GA. Recently, sampling and testing feathers has successfully been used as a non-lethal tool to trace exposure and assimilation of Aroclor 1268 in rails from the LCP site. This approach allows us to infer how and when these birds are exposed to contaminants in the marsh due to predictable molting patterns coupled with the fact that a feather will accumulate the toxicant only at the time it is grown. This study is the start of a process to investigate the possibility that this ecosystem contamination is the foundation of an ecological trap for Clapper Rails at the LCP site. Aroclor 1268 was isolated in Clapper Rail feathers from all birds collected from the con...