@article{919babbd4cc64271967dbe2971bd1dd5,
title = "Selenium, selected inorganic elements, and organochlorine pesticides in bottom material and biota from the Colorado River delta",
abstract = "Concentrations of selenium (Se) in bottom material ranged from 0.6 to 5.0 μg g-1, and from 0.5 to 18.3 μg g-1 in biota; 23% of samples exceeded the 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 water 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.",
keywords = "Colorado River delta, DDE, DDT, Dynamics of selenium, Metals, Redox potential, Selenium, Wetland management",
author = "Jaqueline Garc{\'i}a-Hern{\'a}ndez and King, {Kirke A.} and Velasco, {Anthony L.} and Evgueni Shumilin and Mora, {Miguel A.} and Glenn, {Edward P.}",
note = "Funding Information: This research was funded in part by the North American Wetland Conservation Council (NAWCC), the Wallace Foundation for Latin American Students, The University of Arizona Graduate Student Final Project Fund, and by a fellowship from CONACYT (Consejo Nacional de Ciencia y TecnologmH a). We thank the Instituto Nacional de EcologmH a, for issuing the collecting permits. Many thanks to our friend and host JoseH Campoy, director of the Upper Gulf of California and Colorado River delta Biosphere Reserve. We are also very grateful to the following volunteers: Jorge Torre-CosmH o, Jeff Conn, Osvel Hinojosa, Charles Bergman, Butron family, Mosqueda family and Onesimo and family. Special appreciation is expressed for the support, encouragement, and mentoring of Dr O. Eugene Maughan throughout this project.",
year = "2001",
doi = "10.1006/jare.2001.0836",
language = "Ingl{\'e}s",
volume = "49",
pages = "65--89",
journal = "Journal of Arid Environments",
issn = "0140-1963",
number = "1",
}