. Elements of ecology. Ecology. 40 The Medium the vertical distribution of plankton. Differences in the density of fresh water and sea water at three temperatures within the biological range are shown in Table 2. As a result of these density differences, TABLE 2 Sample Values for the Density of Water at Different Temperatures Fresh Water Sea Water (salinity 35%c) Temperature °C (g/cc) (g/cc) 0 4 30 relatively sharp stratification of water masses may come into being in lakes and in oceanic areas. If other influences do not interfere, warmer water tends to
. Elements of ecology. Ecology. 40 The Medium the vertical distribution of plankton. Differences in the density of fresh water and sea water at three temperatures within the biological range are shown in Table 2. As a result of these density differences, TABLE 2 Sample Values for the Density of Water at Different Temperatures Fresh Water Sea Water (salinity 35%c) Temperature °C (g/cc) (g/cc) 0 4 30 relatively sharp stratification of water masses may come into being in lakes and in oceanic areas. If other influences do not interfere, warmer water tends to remain over colder water, and fresher water tends to float on top of the more Murray and Hjort, 1911, copyright Macmillan & Co. Fig. Calocalanus pavo, a tropical planktonic copepod. The length of the crustacean's body is about mm. Although the differences in density shown in Table 2 may seem very small, they are sufficient to influence profoundly the circulation of water in lakes and in the ocean, and to make the difference be- tween floating and sinking for planktonic organisms. Plankton some- times tends to sink through the upper stratum of less dense water, but to stop sinking when it reaches a stratum of higher density 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 Clarke, George L. (George Leonard), 1905-. New York, Wiley
Size: 2046px × 1221px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookpublishernewyorkwiley, booksubjectecology
