| Autor: |
Hughes, Kimberly D., Weseloh, D. Vaughn, Braune, Brigit M. |
| Zdroj: |
Journal of Great Lakes Research; 1998, Vol. 24 Issue 1, p12, 20p |
| Abstrakt: |
Reports that the ratio of DDE to PCB (DDE:PCB) concentrations was examined in herring gull eggs collected from thirteen sites on the Great Lakes from 1979 to 1996. How this ratio has been shown to have had a number of biological interpretations in the past and the data in this study have been used to test the validity of these interpretations; What the findings suggest in terms of the consistency of DDE:PCB over many years reflects the relative availability of DDT and PCB in different geographical areas and provides an indication of a bird?s general foraging ecology. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
