Pondweed is an important dietary item for many bird species that feed on aquatic plants. ... In the pondweed samples from these sites, concentrations ranging from 216 to 567 ug/g (dry weight) were elevated compared with ... Cadmium concentrations did not appear to be accumulating in the pondweed and birds on the basis of analyses of samples collected. ... (from 50 to 100 ug/g dry weight) found to cause mortality to Physa integra in an exposure study by Spehar and others (1978).
|Title||:||Reconnaissance investigation of water quality, bottom sediment, and biota associated with irrigation drainage in the Columbia Basin Project, Washington, 1991-92|
|Author||:||S. S. Embrey, E. K. Block, Geological Survey (U.S.), U.S. Fish and Wildlife Service, United States. Bureau of Reclamation, United States. Bureau of Indian Affairs|