Data/hora: 02/06/2024 16:02:36

Provedor de dados: 	97	
País: 	Chile	
Título: 	Testing the role of contaminants in depressing avian numbers	
Autores: 	KARASOV,WILLIAM H.; MEYER,MICHAEL W.	
Data: 	2000-09-01	
Ano: 	2000	
Palavras-chave: 	Applied physiological ecology; Ecotoxicology; Birds; Chemical contaminants.	
Resumo: 	Environmental contaminants are ubiquitous and so are often key suspects in cases of lagging wildlife populations. How do we test hypotheses about cause-effect linkages between contaminants and wildlife health? We present three case studies in which different approaches were used to test hypotheses about effects of contaminants on wildlife. The cases involve the possible impacts of (1) polychlorinated biphenyl on Lake Superior bald eagles (Haliaeetus leucocephalus); (2) dioxin on osprey (Pandion halieatus); and (3) methyl mercury on common loons (Gavia immer). The different approaches were dictated by legal, logistic, and financial limitations, but the relative strengths of experimental and mechanistic approaches over correlative approaches is underscored. For all three species, the simple correlation between a single contaminant and performance was confounded by covariation with other types of contaminants and/or natural ecological factors such as food availability and predation	
Tipo: 	Journal article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300009	
Editor: 	Sociedad de Biología de Chile	
Formato: 	text/html	
Fonte: 	Revista chilena de historia natural  v.73 n.3 2000