. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LOCAL APPARENT TIME SUNRISE MOONSET 04 * 08 * 12 SUNSET 16 * 20 eft o I Q. LU O 100-. 20O FIGURE 11. Diurnal movement of scattering layer and of iso-illumination curves, a. Atlantis cruise 151, 18 May, 1948; 38°5l'N., 03°27'E. h. Atlantis cruise 144, 8 Feb., 1947; 25°07'N., 92°35'W. lei his own hypothetical figures. The figure of Clarke's (1933) for the same species, which Russell gives, has iso-illumination curves superimposed, and it is clear that the migrations tend to follow the iso-illumination curves. In Clarke's obser
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LOCAL APPARENT TIME SUNRISE MOONSET 04 * 08 * 12 SUNSET 16 * 20 eft o I Q. LU O 100-. 20O FIGURE 11. Diurnal movement of scattering layer and of iso-illumination curves, a. Atlantis cruise 151, 18 May, 1948; 38°5l'N., 03°27'E. h. Atlantis cruise 144, 8 Feb., 1947; 25°07'N., 92°35'W. lei his own hypothetical figures. The figure of Clarke's (1933) for the same species, which Russell gives, has iso-illumination curves superimposed, and it is clear that the migrations tend to follow the iso-illumination curves. In Clarke's observations, however, the warm water at the thermocline appears to form a barrier which limits upward migration. A figure showing the diurnal migration of euphausids is given in Hersey and Moore (1948). Illumination is the chief factor motivating the upward and downward migrations, but. as shown later, limiting temperatures may form barriers at the two ends of the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
