خيارات البحث
النتائج 1 - 10 من 82
Organochlorine and heavy metal contamination in non-viable eggs and its relation to breeding success in a Spanish population of lesser kestrels (Falco naumanni).
1993
Negro J.J. | Donazar J.A. | Hiraldo F. | Hernandez L.M. | Fernandez M.A.
Chronic toxicity of an environmental contaminant mixture to young (or larval) striped bass.
1987
Mehrle P.M. | Cleveland L. | Buckler D.R.
Zirconium toxicity assessment using bacteria, algae and fish assays.
1989
Couture P. | Blaise C. | Cluis D. | Bastien C.
The regulation of toxic air pollutants. A critical review.
1986
Cannon J.A.
Metal pollution index precision assessed from toxicity tests
2001
Teodorovic, I. (Univerzitet u Novom Sadu, Novi Sad (Yugoslavia). Prirodno-matematicki fakultet, Institut za biologiju) | Djukic, N. | Dalmacija, B. | Maletin, S. | Miljanovic, B. | Bokorov, M.
To evaluate precision and reliability of recently introduced Metal Pollution Index as a method for metal pollution monitoring of surface waters, a series of toxicity tests with Daphnia magna have been undertaken. The sampling sites (the River Danube wetlands and Hydrosystem DTD (Danube - Tisza - Danube), Serbia, Yugoslavia) for this study have been chosen according to previously recorded high MPI values. Chemical characterization and WET (whole effluent toxicity) testing of selected waste waters at the chosen sampling sites, and the recipient water toxicity testing upstream and downstream the discharger evaluated the validity of MPI, and, on the other hand, discriminated the effects of background pollution. The results of acute and chronic toxicity tests of water and sediment corresponded well with MPI values, which leads to a conclusion that MPI could be regarded as a reliable and precise method for metal pollution monitoring of surface waters.
اظهر المزيد [+] اقل [-]Some aspects of the effects of lindane to the nutrition of Serranus scriba in the sea water
1999
Kovacevic, A. (Institut za biologiju mora, Kotor (Yugoslavia))
The experiment was performed on marine Teleost Serranus scriba with lower concentrations of lindane then MPC (due to our valid law). The aim of this study was to find the effects of lindane to fish activities connected with nutrition. This motive is among the strongest. It includes parameters as: number of fish movements in the presence of prey or without it and the number of onslaughts to the prey during one hour. The results have shown that the increasing of lindane concentration caused considerable decreasing and even complete cessation of activity. Interest for prey and decreasing activity of predators in the presence of prey (typical for Serranus - as a fish of prey and the hunter) endures till the moment of convulsion.
اظهر المزيد [+] اقل [-]Life-cycle phases of a zinc- and cadmium-resistant ecotype of Silene vulgaris in risk assessment of polymetallic mine soils
2000
Ernst, W.H.O. | Nelissen, H.J.M.
Energy production from biomass and wastes: present limitations and potential improvements
1992
Jewell, W.J. | Cummings, R.J. | Richards, B.K. (Cornell Univ., Ithaca, NY (USA). Dept. of Agricultural and Biological Engineering)
[Residues of pesticides and their impacts on general health]
2002
Tawil,M.Z.
Interactive effects of aluminum, phosphorus and mycorrhizae on growth and nutrient uptake of Panicum virgatum L. (Poaceae)
1989
Koslowsky, S.D. | Boerner, R.E.J. (Department of Botany, Ohio State University, Columbus, OH 43210 (USA))
