D W Sparling
Affiliation: U.S. Geological Survey
- Relationships between ambient geochemistry, watershed land-use and trace metal concentrations in aquatic invertebrates living in stormwater treatment pondsN K Karouna-Renier
USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708, USA
Environ Pollut 112:183-92. 2001..The levels of Cu, Zn, and Pb in invertebrates from all ponds were less than dietary concentrations considered toxic to fish...
- Pesticides and amphibian population declines in California, USAD W Sparling
U S Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive Laurel, Maryland 20708 4017, USA
Environ Toxicol Chem 20:1591-5. 2001..In addition, up to 86% of some populations had measurable endosulfan concentrations and 40% had detectable 4,4'-dichlorodiphenyldichloroethylene, 4,4'-DDT, and 2,4'-DDT residues...
- Pesticides are involved with population declines of amphibians in the California Sierra NevadasD W Sparling
USGS Patuxent Wildlife Research Center, Laurel, MD 20708 4017, USA
ScientificWorldJournal 1:200-1. 2001..cdpr.ca.gov/dprdatabase.htm). Prevailing westerly winds from the Pacific Coast transport these pesticides into the into the Sierras...
- Contaminant exposure and effects in red-winged blackbirds inhabiting stormwater retention pondsDonald W Sparling
USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, Maryland 20708, USA
Environ Manage 33:719-29. 2004..This stress may have been direct on the nestlings or indirect through effects on the availability of food organisms...
- Effects of lead-contaminated sediment on Rana sphenocephala tadpolesDonald W Sparling
US Geological Survey, Patuxent Wildlife Research Center, Laurel, Maryland, USA
Arch Environ Contam Toxicol 51:458-66. 2006..Lead concentrations in tissues correlated positively with sediment and pore water concentrations...