Zobrazeno 1 - 4
of 4
pro vyhledávání: '"R. C. Stendell"'
Publikováno v:
Isotopes in environmental and health studies. 39(2)
White-tailed kite (Elanus leucurus) populations in the 1930s were close to extirpation in the United States. But by the 1940s, an upward trend towards recovery was apparent and continued to their current stable population levels. These dramatic fluct
Publikováno v:
Journal of Mammalogy. 57:677-686
Population declines of house-mice in South Australia in summer have been attributed to aridity. A free-watering experiment to test the generality of the hypothesis was conducted in California where breeding populations of Mus sometimes decline abrupt
Publikováno v:
Pesticides monitoring journal. 13(3)
Chicks of great blue herons (Ardea herodias) from four heronaries located near South St. Paul, Royalton, and Wabasha, Minnesota, and La Crosse, Wisconsin, were analyzed for organochlorines, Highest mean wet-weight concentrations, 6.43 ppm PCBs. 1.31
Publikováno v:
Pesticides monitoring journal. 10(1)
Eggs from four species of aquatic birds inhabiting waterways of the Lake St. Clair region were collected in 1973 and analyzed for mercury. Species analyzed were mallard ducks (Anas platyrhynchos), common terns (Sterna hirundo), black-crowned night he