| biomagnification factors (fish to osprey eggs from willamette river, oregon, u.s.a.) for pcdds, pcdfs, pcbs and oc pesticides. | a migratory population of 78 pairs of osprey (pandion haliaetus) nesting along the willamette river in western oregon was studied in 1993. the study was designed to determine contaminant concentrations in eggs, contaminant concentrations in fish species predominant in the ospreys diet, and biomagnification factors (bmfs) of contaminants from fish species eaten to osprey eggs. ten osprey eggs and 25 composite samples of fish (3 species) were used to evaluate organochlorine (oc) pesticides, polych ... | 2003 | 12807265 |
| environmental contaminants and biomarker responses in fish from the columbia river and its tributaries: spatial and temporal trends. | fish were collected from 16 sites on rivers in the columbia river basin (crb) from september 1997 to april 1998 to document temporal and spatial trends in the concentrations of accumulative contaminants and to assess contaminant effects on the fish. sites were located on the mainstem of the columbia river and on the snake, willamette, yakima, salmon, and flathead rivers. common carp (cyprinus carpio), black bass (micropterus sp.), and largescale sucker (catostomus macrocheilus) were the targeted ... | 2006 | 16406490 |
| contaminants of legacy and emerging concern in largescale suckers (catostomus macrocheilus) and the foodweb in the lower columbia river, oregon and washington, usa. | we investigated occurrence, transport pathways, and effects of polybrominated diphenyl ether (pbde) flame retardants and other endocrine disrupting chemicals (edcs) in aquatic media and the foodweb in the lower columbia river. in 2009 and 2010, foodweb sampling at three sites along a gradient of contaminant exposure near skamania (washington), columbia city (oregon) and longview (washington) included water (via passive samplers), bed sediment, invertebrate biomass residing in sediment, a residen ... | 2014 | 24462179 |
| pcdds, pcdfs, pcbs, oc pesticides and mercury in fish and osprey eggs from willamette river, oregon (1993, 2001 and 2006) with calculated biomagnification factors. | the osprey (pandion haliaetus) population nesting along the main stem willamette river and lower santiam river was first studied to evaluate contaminants and reproductive rates in 1993 when 78 occupied nests were present. by 2001, the population increased to 234 occupied nests, a 13.7% annual rate of population increase. a sample egg was collected from each of a series of nests along the upper river (river mile 55-187) in 1993, 2001 and 2006 to evaluate trends of persistent contaminants (organoc ... | 2009 | 18830817 |
| health status of largescale sucker (catostomus macrocheilus) collected along an organic contaminant gradient in the lower columbia river, oregon and washington, usa. | the health of largescale sucker (catostomus macrocheilus) in the lower columbia river (usa) was evaluated using morphometric and histopathological approaches, and its association with organic contaminants accumulated in liver was evaluated in males. fish were sampled from three sites along a contaminant gradient. in 2009, body length and mass, condition factor, gonadosomatic index, and hematocrit were measured in males and females; liver and gonad tissue were collected from males for histologica ... | 2014 | 24041613 |