Read e-book online Marine Biology PDF

By John H. Steele & Steve A. Thorpe & Karl Karekin Turekian

ISBN-10: 008096480X

ISBN-13: 9780080964805

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Journal of Eukaryotic Microbiology 43: 261--274. Cachon J, Cachon M, and Estep KW (1990) Phylum Anctinopoda Classes Polycystina ( ¼ Radiolaria) and Phaeodaria. ) Handbook of Protoctista, pp. 334--379. Boston: Jones and Barlett. Casey RE (1971) Radiolarians as indicators of past and present water masses. ) The Micropaleontology of Oceans, pp. 331--349. Cambridge: Cambridge University Press. Steineck PL and Casey RE (1990) Ecology and paleobiology of foraminifera and radiolaria. ) Ecology of Marine Protozoa, pp.

In 1867 Owen described the planktonic life habit of these organisms. Following the Challenger Expedition (1872–1876) the surface-dwelling habitat of planktonic foraminifers was recognized. Rhumbler first described the biology of foraminifers in 1911. In the first half of the twentieth century, foraminifers were widely used for stratigraphic purposes, and many descriptions were published, mainly by Josef A. Cushman and co-workers.

These estimates illustrate the biogeochemical importance of bacterioplankton in the ocean carbon cycle: although their growth efficiency is low, bacteria process large amounts of DOM. DOM produced by a myriad of ecological and physiological processes must escape bacterial metabolism to enter long-term storage in the oceanic reservoir. Role in Food Webs and Biogeochemical Cycles The process of bacterivory (consumption of bacteria by bacteriovores) completes the microbial loop. Bacterioplankton cells are ingested by a great diversity of predators, but, because of the small size of the prey, most bacteriovores are small protozoans, typically o5 mm nanoflagellates and small ciliates.

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Marine Biology by John H. Steele & Steve A. Thorpe & Karl Karekin Turekian

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