Marine Biology: An Ecological Approach
Appropriate for undergraduate majors and graduate students in marine biology and marine ecology, Marine Biology: An Ecological Approach emphasizes the ecological principles that govern marine life throughout all environments within the world's oceans. Its unique ecological approach adds real-world relevance by exploring how organisms interact within their individual ecosystems. The text is organized by habitat and each habitat receives detailed, in-depth coverage, giving instructors flexibility to focus on their particular areas of interest. The Fifth Edition is fully updated with the latest research data and topics, including expanded coverage of the human impact on oceans, oceanic dead zones, and coral reefs. In addition to Nybakken's engaging writing style, the text now offers enhanced pedagogy with new end-of-chapter summaries, a new four-color design to complement the art program, an art CD-ROM for instructors, and a text specific Companion Web site.
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They are usually found in association with organic particles in the water column,
collectively called particulate organic carbon (POC), or on various gelatinous
zooplankton pieces known as marine snow (see p. 87). They are usually motile
This study also suggests that diel vertical migration is not a fixed trait in
zooplankton species but a dynamic behavioral trait that may be modified by
prevailing conditions. A second hypothesis, somewhat related to the first, is light-
This bloom is ended in late spring, often not by zooplankton grazing, but probably
by depletion of nitrogen sources, leading to the accumulation of diatoms on the
mud surface. Populations remain low in the summer due to low nutrient levels ...
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H A P T E R
SOME ECOLOGICAL PRINCIPLES
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