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Titolo:
Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta
Autore:
Garcia-Hernandez, J; King, KA; Velasco, AL; Shumilin, E; Mora, MA; Glenn, EP;
Indirizzi:
Univ Arizona, Environm Res Lab, Tucson, AZ 85706 USA Univ Arizona Tucson AZ USA 85706 , Environm Res Lab, Tucson, AZ 85706 USA US Fish & Wildlife Serv, Arizona Ecol Serv Field Off, Phoenix, AZ 85021 USA US Fish & Wildlife Serv Phoenix AZ USA 85021 d Off, Phoenix, AZ 85021 USA Ctr Interdisciplinario Ciencias Marinas, La Paz 23096, BCS, Mexico Ctr Interdisciplinario Ciencias Marinas La Paz BCS Mexico 23096 S, Mexico Texas A&M Univ, US Geol Survey, Dept Wildlife & Fisheries Sci, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 es Sci, College Stn, TX 77843 USA
Titolo Testata:
JOURNAL OF ARID ENVIRONMENTS
fascicolo: 1, volume: 49, anno: 2001,
pagine: 65 - 89
SICI:
0140-1963(200109)49:1<65:SSIEAO>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
KESTERSON RESERVOIR; MEXICALI VALLEY; BAJA-CALIFORNIA; AQUATIC BIRDS; WATER; BIOACCUMULATION; WETLANDS; SUCCESS; STATES; USA;
Keywords:
Colorado River delta; DDE; DDT; dynamics of selenium; metals; redox potential; selenium; wetland management;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Garcia-Hernandez, J Univ Arizona, Environm Res Lab, 2601 E Airport Dr, Tucson, AZ 85706 USA Univ Arizona 2601 E Airport Dr Tucson AZ USA 85706 USA
Citazione:
J. Garcia-Hernandez et al., "Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta", J ARID ENV, 49(1), 2001, pp. 65-89

Abstract

Concentrations of selenium (Se) in bottom material ranged from 0.6 to 5.0 mug g(-1), and from 0.5 to 18.3 mug g(-1) in biota; 23% of samples exceededthe toxic threshold. Concentrations of DDE in biota exceeded the toxic threshold in 30% of the samples. Greater concentrations of selenium in biota were found at sites with strongly reducing conditions, no output, alternating periods of drying and flooding or dredging activities, and at sites that received,,vater directly from the Colorado River. The smallest Se concentrations in biota were found at sites where an outflow and exposure or physical disturbance of the bottom material were uncommon. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 08:42:22