There is growing concern about the effects global change, natural and anthropic, on the environment and organisms. Migratory shorebirds are very sensitive to these changes being reflected at both individual and population ...

We report observations of migrant shorebirds on the beaches of Península Valdés, Chubut, Argentina (42°30'S, 64°00'W), during their northward stopover in the year 2000. This follows a report for the 1999 season, which ...

The coast of the Buenos Aires province, Argentina, includes a remarkable diversity of habitats and is used by more than fifteen nearctic shorebird species during the austral summer months. We evaluated non-breeding shorebird ...

Small shorebird-like footprints have been discovered in Cenicero (La Rioja, Spain). They are preserved in a sandstone block of the transition unit between the Nájera and Haro Formations from the Ebro Basin. This level is ...

Information on Nearctic shorebirds is scarce for inland South America. This work presents information on abundance and habitat use of the species that inhabit water bodies in the highlands of western Santa Cruz province, ...

The burrowing crab Chasmagnathus granulatus is an important bioturbator that generates dense burrow assemblages (crab beds) characteristic of intertidal habitats of SW Atlantic estuaries. Crab bioturbation affects the ...

Aquatic birds are considered the natural reservoir of all influenza viruses (Webster et al. 1992). Low-pathogenic avian influenza (AI) viruses have been isolated from Anseriformes (at least 36 species of ducks and 8 species ...

Information about shorebirds is essential for predicting the impact of natural and human-mediated changes on their populations. Aerial and terrestrial surveys were performed to characterize shorebird abundance, spatial ...

Fat tails in contingent valuation (CV) refers to the phenomenon of a yesresponse function having a high and slowly declining yes-response rate at high bid levels offered in a CV survey. So, for example, a yes-response ...