Further investigations on the burden of environmental contaminants in birds of prey and owls from Brandenburg and Berlin, Population ecology of raptors and owls Volume 5
Kenntner, N; Langgemach, T; Litzbarski, H; Wittstatt, U
| HERO ID | 543093 |
|---|---|
| Year | 2006 |
| Title | Further investigations on the burden of environmental contaminants in birds of prey and owls from Brandenburg and Berlin, Population ecology of raptors and owls Volume 5 |
| Authors | Kenntner, N; Langgemach, T; Litzbarski, H; Wittstatt, U |
| Editor | Michael Stubbe; Annegret Stubbe |
| Page Numbers | 403-426 |
| Abstract | Levels of potentially toxic heavy metals and organochlorine contaminants in organs and egg contents of birds of prey and owls from the Brandenburg region in north- eastern Germany are presented. Levels of egg contents were analysed in the period from 1981 to 1988 and concentrations of heavy metals and organochlorines in organs from 1991 to 1994, respectively. The results indicate lead poisoning in two out of three White-tailed Sea [DELTA]agles. Mercury intoxication was detected in one Northern Goshawk with high mercury levels in liver and kidney tissue, and suggested in three further Northern Goshawks by extraordinary high residues in their livers. Levels for cadmium and zinc in body tissue were in range of background levels known in raptors. All measurements for arsenic residues were below the detection limit at 0.01 ppm. Levels for organochlorine contaminants indicate higher exposure of White-tailed Sea [DELTA]agles, Northern Goshawks, Sparrow Hawks, Peregrine Falcons and [DELTA]agle Owls than the other species. However, all residues of organochlorine contaminants were below levels known for detrimental physiological effects in raptors. Analysis of egg contents, including the period 1983/84 when DDT was applied in forestry in Brandenburg in high amounts, indicated high exposure of [DELTA] DDT in some samples. Especially Northern Goshawks and Sparrow Hawks had higher median values for [DELTA]DDT and [DELTA];PCB than the other raptor species. High residues of [DELTA] DDT were also detected in two eggs of Black Kites. High residues of [DELTA]DDT in eggs of the sensitive Sparrow Hawks may have impaired reproduction due to eggs were considered to be harmless in birds of prey and owls. |
| Is Certified Translation | No |
| Translated Title | Weitere Untersuchungen zur Schadstoffbelastung von Greifvoegeln und Eulen in Brandenburg und Berlin. |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Michael Stubbe; Annegret Stubbe |
| Is Qa | No |