| 1. |
- Erlinge, S, et al.
(författare)
-
Predation on brown hare and ring-necked pheasant populations on southern Sweden
- 1984
-
Ingår i: Holarctic Ecology. ; 7:3, s. 300-304
-
Tidskriftsartikel (refereegranskat)abstract
- in an open field area in southern Sweden. Biomass and numbers of hares and pheasants eaten by the predators were calculated from data on food habits, food requirements, and numbers of the mammalian and avian predators present (11 species). At the same time estimates of numbers and production of hares and pheasants were obtained. At least 40% of the estimated annual production of hares and almost 60% of subadult-adultp heasants in autumn were consumed by the predators. Estimated numbers of hares and pheasants taken by the predators greatly exceeded shootinga nd road mortality.F oxes and cats were the predominantp reda-tors on hares( about9 0%o f total harec onsumption). Foxesa ccountedf or aboutt wo-thirds of predation on pheasants; cats and goshawks were of secondary importance. Pheasant nests were preyed upon by hooded crows and also by badgers. Hares and pheasantsc ontributedo nly about 3 and 1%, respectively,o f the food of the predators.
|
|
| 2. |
|
|
| 3. |
|
|
| 4. |
- Ortendahl, T W, et al.
(författare)
-
Effects of magnetic fields from underwater electrical cutting on in vitro corrosion of dental amalgam.
- 1988
-
Ingår i: Undersea biomedical research. - 0093-5387. ; 15:6, s. 443-55
-
Tidskriftsartikel (refereegranskat)abstract
- Metallic taste has been reported from divers working with underwater electric welding and cutting. An in vitro model was designed to simulate the intraoral situation of the divers with respect to the magnetic field. Potentiostatic analyses were performed on amalgam samples exposed to AC and DC magnetic fields. Morphologic changes were analyzed using differential interference light microscopy and scanning electron microscopy. Chemical changes on the surface of the amalgam samples were analyzed with secondary ion mass spectrometry. Results demonstrated that dental amalgams exposed to a specific AC magnetic field underwent morphologic and chemical changes in the superficial amalgam layers.
|
|
