Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Robert H. Lander"'
Autor:
Robert H. Lander
Publikováno v:
Journal of the Fisheries Research Board of Canada. 32:2447-2452
From known values of the number of northern fur seals, Callorhinus ursinus, born in a given year and the commercial kill of older animals of this species, by age and sex, a method is given for approximating natural mortality or survival 1) between ti
Autor:
Robert H. Lander
Publikováno v:
Fisheries Research. 1:55-70
A new life table is compiled for the northern fur seal, Callorhinus ursinus, of the Pribilof Islands, Alaska. The population is assumed to be reasonably stable on the basis of (1) similar estimates for pup production in the late nineteen-seventies, a
Autor:
Robert H. Lander
Publikováno v:
Journal of the Fisheries Research Board of Canada. 19:159-168
This paper examines the problem of estimating mortality rates from knowledge of catch and of the change in composition caused by selective fishing on one of two classes of a closed population.Estimators of fishing mortality in the presence and in the
Autor:
Robert H. Lander
Publikováno v:
Transactions of the American Fisheries Society. 92:305-307
Autor:
Robert H. Lander
Publikováno v:
Copeia. 1956:151
blunt-nosed minnow, Pimephales notatus. Ohio Jour. Sci., 28 (2): 86-98. LAGLER, K. F. 1944. Problems of competition and predation. Trans. Ninth North Amer. Wildlife Conf.: 212-19. LAGLER, K. F., OBRECHT, C. B., AND G. V. HARRY. 1943. The food and hab