|
|
Akamine, T. (1993). A new standard formula for seasonal growth of fish in population dynamics (Vol. 59).
Zusammenfassung: This formula is based on the Richards formula, which includes well-known growth formulae, and is invariant for allometry. It is expanded by exchanging the independent variable from time to its function, in other words the cumulative water temperature. This standard formula includes the method of substituting values for the cumulative water temperature into the time term, the mathematical model of adding sine functions to the time term, and switched growth rate models. This standard model is given by general theory, which makes the character of parameters clear and helps to analyze the growth formula statistically.
Schlüsselwörter: Fisch, wachstum, statistik, modell, population, theorie
|
|
|
|
Anwand, K. (1993). Über den Amerikanischen Flußkrebs (Orconectes limosus (Rafinesque) (Vol. 1993).
Schlüsselwörter: Krebs, Orconectes immunis, Beschreibung, Vorkommen, Wachstum, Kamberkrebs
|
|
|
|
Bangel, T. (1993). Untersuchungen zur Reproduktion von Flußneunaugen Lampetra fluviatilis im Oder-Meiße-Stromsystem (Vol. 2).
Schlüsselwörter: Neunauge, Lampetra fluviatilis, Flussneunauge
|
|
|
|
Bartels, H. (1993). Alters- und Wachstumsuntersuchungen an Fischen aus dem Schapenbruchteich, Naturschutzgebiet Riddagshausen. Braunschweig: Carolo-Wilhelmina-Universität.
Schlüsselwörter: Fisch, Altersbestimmung, Wachstum, Alter
|
|
|
|
Bethke, E. (1993). Probleme bei hydroakustischen Untersuchungen von pelagischen Fischarten in den Flachwassergebieten der westlichen Ostsee durch das Tag-Nacht-Verhalten der Fische (Vol. 40).
Schlüsselwörter: Fisch, Hydroakustik, Verhalten, Tag-Nacht, Ostsee
|
|
|
|
Bohl, E., Hennel, R., Heise, J., & Bohl, E. (1993). Rundmäuler und Fische im Sediment. Ber. Bayer. Landesanst. Wasserforsch., 22. München: Bayerische Landesanstalt für Wasserforschung.
|
|
|
|
Brockhaus, T., & Mackenthun, G. (1993). Ökologische Beurteilung von Fließgewässern im Regierungsbezirk Chemnitz. Chemnitz: Staatliches Umweltfachamt.
Schlüsselwörter: Fisch, Vorkommen, Verbreitung, Kartierung
|
|
|
|
Brown, R. W., & Taylor, W. W. (1993). Factors Affecting the Recruitment of Lake Whitefish in Two Areas of Northern Lake Michigan (Vol. 19).
Schlüsselwörter: population, rekrutierung, methode, regression, fische
|
|
|
|
Busch, W., & Kreymann, H. (1993). Die Issel und ihre Fischfauna: Erkundungen an einem Fliessgewässer in Nordrhein-Westfalen. Kleve: Boss-Verlag.
Schlüsselwörter: Renaturierung, Fisch, Vorkommen, Arteninventar
|
|
|
|
Cadigan, N. G., & Shelton, P. A. (1993). SAS programs for fitting a seal population dynamics model.37.
Zusammenfassung: This technical report presents a description of two SAS programs (MAKED.SAS and SEAL.SAS) that fit a population dynamics model to seal (Phocidae) data. The programs have been constructed in such a manner that special knowledge of SAS is not required to run them. The population dynamics model is transformed to a standard nonlinear regression model and parameters are estimated using SAS's PROC NLIN. Output from the programs includes estimates of intrinsic mortality, pup numbers over time and total population numbers over time. The code for the programs is presented along with two examples.
Schlüsselwörter: SAS, population, saison, mortalität, modell
|
|
